TW387990B - An optical apparatus - Google Patents

Description

A7 B7 五、發明說明（1 ) 本發明所屬之技術領域： 本發明係有關於一種欲使像差有經過良好修正後之光 學裝置的理論解像界限附近之解像度更予提升之超解像光 學技術。甚至’本發明係有關於一種欲予去除超解像特有 之膏瓣輪之技術。特別是，本發明係有關於一種欲予提升 光碟之光拾音器的解像度之技術。 n 習知技藝： 針對光學裝置之課論解像界限作簡翠說明。在.幾何光 學上’在約以無像差所設計之光學裝置，其點像乃以無限 小之光點成像。但是，光點在實際上，因光之波動性的繞 射之影響而具有有限之擴展《此時，依存成像或著聚光之 光學裝置的開口數設為NA時，光點之擴展的物理性定義 ’乃以式KX又+NA所表示。於此，又為光之波長。K為 因光學裝置而定之常數，通常乃取1〜2之值。而開口數ΝΑ ，一般而言，係比例於光學裝置之有效入射曈直徑D(平 常為有效光束直徑）與光學裝置之焦點距離f的比值D/f。 由於此，欲予提升光學裝置之理論解像度時，即，欲 使光點為實小之時，即’要使用更短波長之光，或著，使 開口數NA增大就可以。 一般常使用之雷射光源之波長為780nm或650nm。而 近年來’已開發410nm波長之雷射光源β但是，具有380nm 以下之波長的雷射光源’即，難予實現或著其成本較高。 又’愈增大光學裝置之開口數NA，即，在幾何光學 上就愈難予設計為無像差之光學裝置。並且，光學裝置之 本紙張尺度適用中國國家標準（CNS>A4規格（210 X 297公釐） -----I----裝--- (請先閱讀背面之注意事項再填寫本頁) -& · 經濟部智慧財產局貝工消費合作社印製 A7 B7 '經濟部智慧財產局貝工消费合作社印製A7 B7 V. Description of the invention (1) The technical field to which the present invention belongs: The present invention relates to a super-resolution optics for improving the resolution near the theoretical resolution limit of an optical device with a well-corrected aberration. technology. Even the present invention relates to a technique for removing a plaster wheel peculiar to super resolution. In particular, the present invention relates to a technique for improving the resolution of an optical pickup of an optical disc. n Know-how: Briefly explain the boundary of the image interpretation of the optical device. In the case of geometrical optics, the point image of an optical device designed with approximately no aberration is imaged with infinitely small light points. However, in fact, the light spot has a limited expansion due to the influence of the diffractive diffraction of light. "At this time, when the number of openings of an optical device that depends on imaging or focusing is set to NA, the physical The definition of sex is expressed by the formula KX + NA. Here again, it is the wavelength of light. K is a constant determined by the optical device, and usually takes a value of 1 to 2. The number of openings NA, in general, is proportional to the ratio D / f of the effective incident diameter D (usually the effective beam diameter) of the optical device to the focal distance f of the optical device. Because of this, when the theoretical resolution of the optical device is to be improved, that is, when the light point is to be really small, that is, to use light of a shorter wavelength, or to increase the number of openings NA. Generally, the wavelength of the laser light source commonly used is 780nm or 650nm. In recent years, "a laser light source β having a wavelength of 410 nm has been developed. However, a laser light source having a wavelength of 380 nm or less", that is, it is difficult to realize or its cost is high. Also, the larger the number NA of the opening of the optical device, that is, the more difficult it is to design an aberration-free optical device in geometrical optics. In addition, the paper size of the optical device conforms to the Chinese national standard (CNS > A4 specification (210 X 297 mm) ----- I ---- installation --- (Please read the precautions on the back before filling in this page )-& · Printed by Shelley Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 'Printed by Shelley Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs

五、發明說明（2 ) m . 焦點深度乃比例於開口數ΝΑ之2次方而變小，而光學裝置 之慧星像差，即比例於開口數ΝΑ之3次方而變大。由於此 ’於現況而言，約具有開口數ΝΑ=0·7以上之光學裝置的 設計，就難予實現或其成本增高。 又’形成光學裝置之光學材料，對於波長為38〇nm以 下的波長之光為不透明。因此，於使用如是之光學材料的 0 光學裝置’就有不能有效活用光之缺點。 考慮如是之限制之後，若以現狀為最小之光點，讀取 光碟之％合的3己錄密度’於直徑約3.5英叶之光碟，約為 12GB(109位組）。由於此’雖在光碟上予以形成超過該記 錄密度之凹坑，亦不能依前述之光點的確予以讀取。 因此，欲使上述之光學裝置的理論解像界限更予提升 ，乃以實現，如在「0 plus E」（第154號，從66頁至72頁 ，1992年）所可獲知之超解像光學裝置之技術，為眾所知 。該技術係將聚光光學裝置有效光束的一部份，以遮蔽板 Φ 予以遮蔽，就能使光點比光學裝置之理論界限較細小為約 10%至20%。該技術係與以等效性而使光學裝置之開口數 NA增大，或使光源波長變成較短，所匹移。 但是，依超解像光學裝置而予形成光點之時，即，在 其兩侧會產生超解像特有之旁瓣輪，換言之，產生較大之 山峯，即其如同產生3個山峯之光束的課題存在。 此問題現參考第6圖及第7圖作解說。首先，如在第6 圖所示之光軸601作為中心，以半徑r之遮蔽屏罩602予以 遮蔽聚光透鏡603之開口。此時，半徑r乃比有效光束604 (請先閲讀背面之注意事項再填寫本頁) .r裝V. Description of the invention (2) m. The focal depth becomes smaller in proportion to the 2nd power of the number of openings NA, while the comet aberration of the optical device becomes larger in proportion to the 3rd power of the openings NA. Because of this, in the current situation, the design of an optical device with a number of openings NA = 0.7 or more is difficult to achieve or the cost is increased. The optical material forming the optical device is opaque to light having a wavelength of less than 38 nm. Therefore, a zero optical device 'using such an optical material has a disadvantage that light cannot be effectively used. After considering such a limitation, if the current situation is the smallest light spot, the 3% recorded density of the read optical disc is about 12 GB (109 bits) for a disc with a diameter of about 3.5 inches. Since this pit is formed on the optical disc in excess of the recording density, it cannot be read in accordance with the aforementioned light spot. Therefore, the theoretical resolution limit of the above optical device is to be raised to achieve the super resolution as can be found in "0 plus E" (No. 154, pages 66 to 72, 1992). The technology of optical devices is well known. This technology is to shield a part of the effective light beam of the concentrating optical device with a shielding plate Φ, which can make the light spot smaller than the theoretical limit of the optical device by about 10% to 20%. This technique is equivalent to increasing the NA of an optical device with an equivalence, or making the wavelength of a light source shorter. However, when the light spot is formed according to the super-resolution optical device, that is, a side lobe wheel unique to the super-resolution is generated on both sides, in other words, a larger mountain peak is generated, that is, it is like generating a beam of 3 peaks. The problem exists. This problem is explained with reference to Figures 6 and 7. First, as shown in FIG. 6, the opening of the condenser lens 603 is shielded by a shielding screen 602 with a radius r as the center. At this time, the radius r is greater than the effective beam 604 (please read the precautions on the back before filling this page).

本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 五、發明說明（3 A7 B7 經濟部智慧財產局貝Η消费合作社印製 之半徑為小。又，在第6圖乃是描繪光學裝置之截面囷， 惟’實際之光學裝置係以光柏601作為旋轉袖_之旋轉對稱 形。 此時’在聚光透鏡603之焦點的ρ點上的光點701，就 能視為如第7圖。即，其係成為從依有效光束6〇4而生之光 點702減去因遮蔽屏罩602所生之假想光點703者。此時， 於Ρ點之光點701乃比因有效光束604而生之光點702為細小 ’並且，獲知有產生旁瓣輪704(即，於第7圖中的負之部 份）。 在第7圖上，旁瓣輪704為負值，惟，若以光學性而言 ’即，其與正之部份相比較，其光波之相位偏移18〇度， 換言之，即，表示相位反轉之意義《但是，如以光之強度 而言，於該旁瓣輪704之部份亦有光之強度〇由於此，在ρ 點乃產生具有3個山峯之光點。第7關係將縱軸表示複素數 振幅顯示而將橫軸表示位置》 將具有如是之3個山峯的光點，特別要應用於光碟之 拾音器時就有問題。因此，於「光學」（第18卷、第12號 、從691頁至692頁，1989年），就提案在光路中，使用微 細之縫隙僅予去除旁瓣輪的技術。但是，若缝隙偏離時， 即’旁瓣輪以外之光點亦會被遮蔽。因此，缝隙之位置對 準務必微妙進行，並且，亦會發生灰塵等附著於縫隙之空 隙的問題。又，雖將缝隙設置為定位，但，只要以缝陈而 將光予以遮光，就會產生重新之光的繞射，因之而會產生 多少之旁瓣輪的更嚴重之問題》 本紙張尺度適用申國國家標準（CNSM4規格（210 * 297公釐） 6 (請先閱讀背面之注意事項再填寫本頁) 裝 >-6·- A7 B7 經濟部智慧財產局員工消費合作社印製 弄、發明說明（4) ^ 本發明之目的： 本發明係欲解決上述課題，而以提供能從超解像聚光 點僅予去除旁瓣輪或著旁瓣輪之成份的光學裝置為目的。 又，本發明係欲提供能以簡單之方法容易切換為超解 像與正常解像之光學裝置為目的。 解決課題之本發明的裝置： ^ 為達成上述目的’在本發明乃以如下之構成。 光學裝置係具有入射光產生機構及欲聚光入射光之透 鏡系統，並予調變該入射光之一部份而予產生含有主瓣輪 與旁辯輪之超解像者，並以具有將旁瓣輪之偏光向量與主 瓣輪之偏光向量作成相異之偏光選擇可能的偏光向量調變 機構’以及由於選擇主瓣輪之偏光向量就能予去除旁瓣輪 之偏光選擇機構，為其特徵。 又’光學裝置係具有直線偏光產生機構，將直線偏光 變換為產生主瓣輪及具有與主瓣輪為相異之方位的旁瓣輪 0 之光束的方位偏光光學元件，以及從光束僅將旁瓣輪予以 去除之用的偏光選擇機構》 於此，旋光（方位偏光）光學元件係由具有與直線偏光 之偏光轴大約為一致或直交之液晶分子的配向軸之90度旋 轉向列型液晶元件，不同質型液晶元件所構成。 且於此，偏光選擇機構係以入射於方位偏光光學元件 之直線偏光的方位作為基準，而配置成為使方位偏光光學 元件向著將直線偏光作90度方位偏光之方向’具有〇度以 上90度以下之範圍的方位。 (請先閱讀背面之注意事項再填寫本頁) 裝 >i·This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). 5. Description of the invention (3 A7 B7 The radius printed by the Behr Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is small. Also, in Figure 6 it is It is a section drawing depicting an optical device, but 'the actual optical device is a rotationally symmetric shape with the optical cymbal 601 as the rotation sleeve. At this time, the light point 701 at the ρ point of the focal point of the condenser lens 603 can be viewed. It is as shown in Fig. 7. That is, it is obtained by subtracting the imaginary light point 703 generated by the shielding mask 602 from the light point 702 generated by the effective light beam 604. At this time, the light point 701 at the point P Nabibi is small due to the effective light beam 604, and it is known that a side lobe 704 (ie, the negative part in FIG. 7) is generated. In FIG. 7, the side lobe 704 is Negative value, but if it is optically speaking, that is, compared with the positive part, the phase of its light wave is shifted by 180 degrees, in other words, it means the meaning of phase reversal In other words, there is also the intensity of light in the part of the side lobe 704. Because of this, there are 3 peaks at the point ρ. Light spot. The seventh relationship is to display the complex prime amplitude display on the vertical axis and the position on the horizontal axis. There will be light spots with three peaks as described above. This is particularly a problem when applied to optical disc pickups. Therefore, in "optical" (Vol. 18, No. 12, from 691 to 692, 1989), it is proposed to use a fine gap in the optical path to remove only the sidelobe wheel. However, if the gap deviates, it is called 'sidelobe' Light spots outside the wheel will also be shielded. Therefore, the alignment of the gap must be performed delicately, and problems such as dust and other adherence to the gap of the gap may occur. Also, although the gap is set for positioning, as long as the gap is set Chen Er shading the light will cause the re-diffraction of light, which will cause a more serious problem of how many side lobe wheels. ”This paper standard applies to the national standard of China (CNSM4 specification (210 * 297 mm) ) 6 (Please read the precautions on the back before filling out this page) Equipment > -6 ·-A7 B7 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed and invented (4) ^ Purpose of the invention: This invention is To solve the above lesson In order to provide an optical device capable of removing only the components of the side lobe or the side lobe from the super-resolution focusing point, the present invention also aims to provide a simple method for easily switching to super-resolution. The purpose of the present invention is to solve the problem of an optical device. The device of the present invention that solves the problem: ^ In order to achieve the above object, the present invention is configured as follows. The optical device is a lens system having an incident light generating mechanism and an incident light to be focused. , And modulate a part of the incident light to generate a super-resolution imager including the main lobe wheel and the side deflection wheel, and make the polarization vector of the side lobe wheel and the polarization vector of the main lobe wheel different The polarizing light selection possible polarization vector modulation mechanism 'and the polarization selection mechanism of the side lobe wheel can be removed by selecting the polarization vector of the main lobe wheel, which are its characteristics. The optical device has a linearly polarized light generating mechanism that converts linearly polarized light into an azimuthally polarized optical element that generates a main lobe wheel and a side lobe wheel 0 having an azimuth different from the main lobe wheel. Polarization selection mechanism for removing the petal wheel》 Here, the optical rotation (azimuth polarization) optical element is a 90-degree rotating nematic liquid crystal element having an alignment axis of liquid crystal molecules that is approximately the same as or orthogonal to the polarization axis of linear polarization , Composed of different quality liquid crystal elements. And here, the polarization selecting mechanism is based on the orientation of the linearly polarized light incident on the azimuthally polarized optical element as a reference, and is arranged so that the azimuthally polarized optical element has a direction of linearly polarized light of 90 degrees and has a degree of azimuth of 90 degrees or more and 90 degrees or less Range of bearings. (Please read the notes on the back before filling out this page) 装 > i ·

本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 經濟部智慧財產局貝工消费合作社印製 A7 B7_;__ 五、發明說明（5) 又，光學裝置係具有直線偏光產生機構。使直線偏光 變換為產生主瓣輪及具有與主瓣輪為相異方位之旁瓣輪之 光束的方位偏光光學元件，欲將光束聚光於光碟上之用的 第1聚光透鏡，檢出光碟之資訊之用的光檢出元件，將從 光碟來之反射光束予以聚光在光檢出元件之用的第2聚光 透鏡，以及由光束僅予去除旁瓣輪之用的偏光選擇機構。 p 於此，方位偏光光學元件，能以電氣性產生或停止旋 光（方位偏光）機能，並於產生方位偏光光學元件之方位偏 光機能的場合，及於停止方位偏光光學元件之方位偏光機 能之場合，乃分別將光束予以聚光在相異種類之光碟。 其場合，相異種類之光碟乃為DVD與CD，或著DVD 與 CD-R(W)等》 又，光學裝置係具有直線偏光產生機構，依電氣信號 能使繞射機能產生或停止之繞射型透鏡元件，將直線偏光 變換為產生主瓣輪及具有與主瓣輪為相異方位之旁瓣輪的 P 光束之用的方位偏光光學元件，將光束聚光於光碟上之用 的聚光透鏡，以及從光束僅予去除前述旁瓣輪之用的偏光 選擇機構。 於此，繞射型透鏡元件使繞射機能成為有效之場合的 光學裝置之焦點距離，乃成為繞射型透鏡元件及聚光透鏡 之合成焦點距離，而繞射型透鏡元件使繞射機能為停止之 場合的光學裝置之焦點距離，乃成為僅為前述聚光透鏡之 焦點距離。 並且，於使繞射型透鏡元件之繞射機能予以產生的場 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公笼） -----------1裝--------訂_丨 (請先閱讀背面之注意事項再填寫本頁> 珐濟部智慧財產局貝工消费合作社印製 A7 ________B7_____乒、發明說明（6 ) . 合’與使繞射型透鏡元件之繞射機能予以停止之場合，乃 分別將光束予以聚光於相異種類之光碟。 其場合，相異種類之光碟乃為DVD與CD，或著，DVD 與 CD-R(W)等。 本發明之實施態稱： <第1實施例> : Φ 現以第1圖說明依據本發明之第1實施例。在第1圖係 描繪光學裝置之截面圖，惟，實際之光學裝置係以光轴101 作為旋轉之旋轉對稱形。直線偏光102係將從未圖示之半 導體雷射等的電射光源所出射之光，以準直透鏡等變成大 約為平行光束者。具有與Y轴方向一致之偏光方向的直線 偏光102就通過方位偏光（旋光）光學元件1〇3。此時，方位 偏光光學元件103之中央部份1〇4(於囷中之斜線部份），乃 使該部份之直線偏光102之偏光方向予以旋轉9〇度，而大 約與X軸方向一致。又，方位偏光光學元件1〇3乃對直線 偏光1〇2不具有相位分佈。即，通過方位偏光光學元件1〇3 之中央部份104之光束，與通過其他部份之光束的光路長 為相同。 通過方位偏光光學元件103之有效光束1〇5,乃由聚光 透鏡106聚光於P點。此時’如在國際公報w〇 98/15952號 公報，示，於P點會產生超解像現象.即，通過中央部份 104之光，與通過其餘部份之光相比，其偏光軸旋轉9〇度 。由於此，相直交之直線偏光係互相不干涉之故，中央部 份104對於其餘部份正如同被作遮蔽屏罩之動作。偏光選 (請先閲讀背面之注意事項再填寫本頁) b 裝 -δ · 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 X 297公爱） 9 i A7 ______B7 ____ 五、發明說明（7 ) 擇機構107乃依方位偏光光學元件1〇3予以去除在p點所成 之超解像光點的旁瓣輪。 於此’當無偏光選擇機構107之場合，參照第8圈予以 探討形成在第1圖之P點的超解像光點801之形狀。第8圓 係以縱轴作複素數振幅顯示而以橫軸作位置之表示。由前 述之第7圊的說明可知，從依有效光束1〇5之整體的光點8〇2This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). Printed by the Shelley Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. A7 B7 _; __ V. Description of the invention (5) In addition, the optical device has linearly polarized light generation mechanism. The linearly polarized light is converted into an azimuth-polarizing optical element that generates a main lobe wheel and a side lobe beam having a different orientation from the main lobe wheel. The first condenser lens for condensing the light beam onto the disc is detected. A light detecting element for information of the optical disc, a second condenser lens for condensing the reflected light beam from the optical disc on the light detecting element, and a polarization selecting mechanism for removing only the side lobe wheel by the light beam . p Here, the azimuth polarizing optical element can electrically generate or stop the optical rotation (azimuth polarizing) function, and when the azimuth polarizing function of the azimuth polarizing optical element is generated, and when the azimuth polarizing function of the azimuth polarizing optical element is stopped. Is to focus the light beams on discs of different kinds. In this case, the different types of optical discs are DVDs and CDs, or DVDs and CD-R (W), etc. Also, the optical device has a linearly polarized light generating mechanism, which can generate or stop the diffraction function according to the electrical signal. A radiation-type lens element that transforms linearly polarized light into an azimuthal polarization optical element for generating a main beam and a P-beam having a side lobe of a different orientation from the main lobe, which focuses the beam onto a disc. A light lens and a polarization selecting mechanism for removing only the aforementioned side lobe wheel from the light beam. Here, the focal distance of the optical device where the diffractive lens element makes the diffractive machine effective is the combined focal distance of the diffractive lens element and the condenser lens, and the diffractive lens element enables the diffractive machine to be The focal distance of the optical device when stopped is the focal distance of the aforementioned condenser lens. In addition, the size of the paper used to generate the diffraction function of the diffractive lens element applies the Chinese National Standard (CNS) A4 specification (210 X 297 male cage) ----------- 1 pack- ------- Order_ 丨 (Please read the precautions on the back before filling in this page >> Printed by A7 ________B7_____ Ping-pong, Invention Description (6). Combination of the and When the diffractive function of the diffractive lens element is stopped, the light beams are respectively focused on different types of optical discs. In this case, the different types of optical discs are DVD and CD, or DVD and CD- R (W), etc. The embodiment of the present invention is called: < First Embodiment >: Φ The first embodiment according to the present invention will now be described with reference to Fig. 1. In Fig. 1, a cross-sectional view of an optical device is depicted. However, the actual optical device is a rotationally symmetric shape with the optical axis 101 as the rotation. The linearly polarized light 102 is obtained by collimating a lens or the like to make the light emitted from a radio source such as a semiconductor laser, not shown, approximately parallel. Beamer. Linearly polarized light 102 with a polarization direction consistent with the Y-axis direction passes azimuth polarization (rotational light) ) Optical element 103. At this time, the central portion 10 of the azimuthally polarized optical element 103 (the oblique line portion in the center) rotates the polarization direction of the linearly polarized light 102 in that portion by 90 degrees. It is approximately the same as the X-axis direction. Moreover, the azimuth-polarized optical element 103 does not have a phase distribution with respect to the linearly polarized light 102. That is, the light beam that passes through the central portion 104 of the azimuth-polarized optical element 103 and passes through the other 104 The optical path length of some of the beams is the same. The effective beam 105 passing through the azimuth polarizing optical element 103 is condensed by the condenser lens 106 at point P. At this time, 'as in International Gazette No. w98 / 15952, It is shown that a super-resolution phenomenon occurs at point P. That is, the light passing through the central portion 104 has a polarization axis rotated by 90 degrees compared to the light passing through the remaining portion. Because of this, the orthogonal polarized light lines orthogonal to each other are mutually For the sake of non-interference, the central part 104 acts as a shielding screen for the rest. Polarization selection (please read the precautions on the back before filling this page) b Pack -δ · This paper size applies Chinese national standards (CNS) A4 specifications (21〇X 297 public love) 9 i A7 ______B7 ____ 5. Description of the invention (7) The selection mechanism 107 is a side lobe wheel that removes the super-resolution light spot formed at the p point according to the azimuth polarizing optical element 103. Here, when there is no polarization selection mechanism 107, The shape of the super-resolution light spot 801 formed at point P in Fig. 1 will be discussed with reference to the eighth circle. The eighth circle is indicated by the vertical prime as the complex prime amplitude and the horizontal axis as the position. From the description, it can be seen that the light point 802 as a whole according to the effective light beam 105

V 、減去依中央部份104之光點803者為超解像光點801。 但是’即直交之直線偏光雖不干涉，惟，在強度上為* 相加。因此’與第7圖之場合相異，在p點所形成之實際 的光點之強度乃成為超解像光點8〇1之強度（即，絕對值之 二次方）’再加依中央部份104之光點803的強度。 第9圖係表示形成在p點之光點的強度。在第9圖其縱 轴為光之強度而橫轴乃表示位置。901係表示依有效光束 105整體之光點的強度◊而902為實際形成在p點之光點的 強度’該光點之強度為超解像光點801之強度（即，絕對值 \ γ之二次方）與依中央部份1〇4之光點8〇3的強度（即，絕對值 之一次方）相加者β 其次’比較第8圖與第9圖，並對於光點各部之偏光狀 態及相對相位作研討。首先，依中央部份1〇4之光點8〇3乃 於X抽方向作直線偏光。又，超解像光點8〇1乃直線偏光 於ΥΙ*方向。但是，超解像光點801之旁瓣輪8〇4.，若與旁 瓣輪以外之部份相比較，即其相位為反轉，而能視為Υ轴 之負方向作直線偏光。 於此’再研討對於第9圈上之強度的場合之光點902的 (锖先閲婧背面之注意事項再填寫本頁) Γ -裝 經濟部智慧財產局興工消费合作社印製 本紙張尺.度適用中國國家標準（CNS)A4規格（21ι3 χ 297公爱〉 10 A7 B7 11齊辩皆螓时i苟興31消费合作；ϋ印製 $、發明說明（8) - 旁瓣輪905。該部份乃成為將依中央部份104之光點803與 超解像光點801之旁瓣輪804相加的偏光向量。即，其偏光 向量乃如在第l〇a圖所示，係具有將依中央部份1〇4之偏光 向量1001，與超解像光點801之旁瓣輪804的偏光向量1002 ;相加之合力向量1003 a的直線偏光。如前述，方位偏光 光學元件103對於入射光乃不具有相位分佈。因此，直線 0 偏光相互間雖以同相位或以偏差180度（或為該等之整數倍) 相位重疊，惟其合力仍然為直線偏光》 其次，以第9圖上之強度作考慮之場合的光點902之主 瓣輪904作研討。該部份係成為將依中央部份1〇4的光點803 與超解像光點801之旁瓣輪804以外相加之偏光向量。即， 其偏光向量乃如在第10b圖所示，係具有將依中央部份1〇4 之偏光向量1001與超解像光點8qi之旁瓣輪以外的偏光向 量1004予以相加之合力向量1003b的直線偏光。 更應予注目的是，在第l〇a圖所示之光點902的旁瓣輪 ^ 9〇5上的直線偏光之合力向量1003a為，與在第l〇b囷所示 之光點902的主瓣輪904上之直線偏光的合力向量i〇〇3b， 其方向經常為相異》 由於此，由第10a圖及第10b圓可了解，於第1圖上以 具有與合力向量1003 a之方位相直交之檢波軸的方位的直 在線偏光檢波元件107作為偏光選擇機構，並予以設置在方 位偏光光學元件103之正後面，就能予消滅於旁瓣輪之直 線偏光的合力向量l〇〇3a。其結果為可去除在第1圖之p點 所成之超解像光點902的旁瓣輪905，而此時，亦可獲知合 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 裝---- ϋ n ί n 訂 ---------φτ. 11 A7 Β7 五、發明說明（9 ) h 經濟部智慧財產局貝工消费合作社印製 力向量1003b不會被消滅。 從光點902而依偏光選擇機構予以去除旁瓣輪905之波 形，以903表示於第9圖。在中心位置上，903之強度比902 之強度為低的理由，乃由於偏光選擇機構之透明度非為 100%等之故。 從第10a圚及第10b圖，欲予消滅超解像光點之旁瓣輪 的直線偏光檢波元件107之方位0為，以Y軸方向作為〇度而 向著X抽方向作量測，而獲知存在於〇度以上，90度以下之 範圍。更詳細為，依中央部份104之偏光向量1〇〇1的大小愈 小，即，中央部份1〇4之面積愈小，0愈接近於9〇度。 直線偏光檢波元件107並不一定要放置於方位偏光光 學元件103之正後面。但是，若從弗利紫成像論來考量， 即，集中於透鏡之聚光點的光點之成份，在透鏡之正後面 乃對有效光束整體以均一擴展，但，愈靠近聚光點，其均 一性就愈消失。即，於第10a圖及第10b圓上的合力向量 1003a及1003b之方向，在聚光透鏡106之正後面，取χγ平 面上之任何部份均為同樣。換言之，即，超解像光點之旁 瓣輪的成份，於聚光透銳106之正後面乃以均一擴展在有 效光束105中。但是’愈靠近聚光點p，即，使光點徐徐 成像之故’乃無法去除旁瓣輪之成份，是故，較為不便β <第2實施例> 其次，使用第2圖予以說明依據本發明之第2實施例。 在第2圖係描繪光學裝置之截面圖，惟，實際之光學裝置 為以光軸201作為旋轉軸之旋轉軸之旋轉對稱形、直線偏 本紙張尺度適用中國國家標準（CNS〉A4規格（210 X 297公釐） (請先閲讀背面之涑意事項存填寫本 -*^9| -装 if: 12 A7 B7 0 絰濟部智慧財產局貝工消费合作社印製 五、發明說明（10) 光202係將從未圖示之半導體雷射等之雷射光源所出射之 光’ _以準直透鏡等變成大約為平行光束。具有與γ軸方向 相一致之偏光方向的直線偏光202乃通過方位偏光光學元 件203。此時，方位偏光光學元件203之中央部份204(為圖 中之斜線部份），係將該部份之直線偏光2〇2的偏光方向予 以旋轉90度’而使其大約一致於X軸方向。又，方位偏光 光學元件203乃對於直線偏光202不具有相位分佈《即，通 過方位偏光光學元件203之中央部份204的光束，與通過其 以外之部份的光束之光路長為同樣。 通過方位偏光光學元件203之有效光束206，乃由聚光 透鏡207而聚光於P點。此時’如在國際公開w〇 98/15952 號公報所示，在P點會產生超解像現象《即，通過中央部 份204之光比通過其餘部份之光，其偏光軸旋轉9〇度。因 此，由於直交之直線偏光相互不干涉為眾所知，是故，中 央部份204對於其餘部份正如同為被作遮蔽屏罩之功效。 偏光選擇機構208乃依方位偏光光學元件203予以去除在P 點所成之超解像光點之旁瓣輪。 與在第1圖所示之本發明第1實施例的差異為使用液晶 元件作為不具備相位調變之方位偏光光學元件。 首先，為使對本發明容易理解，乃使用第11a圊及第lib 圖說明依液晶元件之光的方位偏光機能及相位調變機能。 第11a圖及第lib圖係以模式性表示以電氣性為控制可 能之一般性的同質性型液晶元件及旋轉向列型液晶元件之 方位偏光機能。在透明電極之經予鍍膜的玻璃基板1101有 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閲讀背面之注意事項再填寫本頁)V, minus the light spot 803 according to the central portion 104 is the super-resolution light spot 801. However, 'that is, orthogonal linear polarized light does not interfere, but the intensity is * added. Therefore, “different from the situation in FIG. 7, the intensity of the actual light spot formed at the p point becomes the intensity of the super-resolution light point 801 (ie, the square of the absolute value)” plus the central part. The intensity of the light spot 803 of 104. Fig. 9 shows the intensity of a light spot formed at the p point. In Fig. 9, the vertical axis is the intensity of light and the horizontal axis is the position. 901 indicates the intensity of the light spot of the entire effective light beam 105, and 902 is the intensity of the light spot actually formed at point p. The intensity of the light spot is the intensity of the super-resolution light spot 801 (that is, the absolute value of \ Square) and the intensity of the light spot 803 according to the central part 104 (ie, the absolute power of the first power) is added β. Next, compare FIG. 8 and FIG. 9 and the polarization state of each part of the light spot. And relative phase. First, according to the light spot 80 of the central part 104, linearly polarized light is generated in the X direction. The super-resolution light spot 801 is linearly polarized in the direction of ΥΙ *. However, if the sidelobe wheel 804 of the super-resolution light spot 801 is compared with the part other than the sidelobe wheel, the phase is reversed, and it can be regarded as linearly polarized in the negative direction of the y axis. Here, we will discuss the light spot 902 for the occasion of the intensity on the ninth circle (锖 Please read the precautions on the back of Jing before filling this page) Γ-Install this paper ruler printed by the Industrial and Commercial Consumers Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Applicable to China National Standard (CNS) A4 specification (21ι3 x 297 public love) 10 A7 B7 11 All disputes are in agreement with each other and consumer cooperation; print $, invention description (8)-side lobe wheel 905. The The part is a polarization vector that adds the light spot 803 according to the central part 104 and the side lobe wheel 804 of the super-resolution light spot 801. That is, the polarization vector is as shown in FIG. The polarized light vector 1001 of the central part 104 and the polarized light vector 1002 of the side lobe 804 of the super-resolution light spot 801 are added together; the combined polarized light vector 1003 a is a linearly polarized light. As mentioned above, the azimuth polarizing optical element 103 is not sensitive to incident light. It has a phase distribution. Therefore, although the linear 0 polarized lights overlap with each other at the same phase or with a deviation of 180 degrees (or an integer multiple of these), their combined forces are still linear polarized lights. Second, consider the intensity on Figure 9 On the occasion, the main lobe wheel 904 of the light spot 902 is discussed. The component system is a polarized light vector that is obtained by adding the light spot 803 of the central part 104 and the super-resolution light spot 801 outside the side lobe wheel 804. That is, the polarized light vector is as shown in FIG. 10b. The polarized light vector 1001 in the central part 104 and the polarized light vector 1004 other than the side lobe wheel of the super-resolution light spot 8qi are added together and the resultant force vector 1003b is linearly polarized. It should be noted that it is shown in Fig. 10a. The combined force vector 1003a of the linearly polarized light on the side lobe wheel 905 of the light spot 902 is a combined force vector i0 of the linearly polarized light on the main lobe wheel 904 of the light spot 902 shown at 10b 囷. 3b, the directions are often different. ”As a result, it can be understood from Figures 10a and 10b that on line 1, a straight line polarized light detection element with an orientation of a detection axis orthogonal to the orientation of the resultant force vector 1003 a is shown. 107 is used as a polarization selecting mechanism and is disposed directly behind the azimuth polarizing optical element 103, so that the resultant force vector 1003a of the linearly polarized light in the side lobe wheel can be eliminated. As a result, it can be removed at the p point in Fig. 1 The side lobe 905 of the super-resolution light spot 902 is formed, and at this time, the The paper size of this paper is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page). ---- n ί n Order ------- --φτ. 11 A7 Β7 V. Description of the invention (9) h The printed force vector 1003b of the Shellfish Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economy will not be eliminated. From the light spot 902, the side lobe wheel 905 is removed by the polarization selection mechanism. The waveform is represented by 903 in Fig. 9. At the center, the reason why the intensity of 903 is lower than the intensity of 902 is because the transparency of the polarization selecting mechanism is not 100%. From Figs. 10a 圚 and 10b, the orientation 0 of the linearly polarized light detection element 107 to eliminate the side lobe wheel of the super-resolution light spot is 0, and the Y-axis direction is taken as 0 degrees, and the measurement is made in the X-extraction direction. A range from 0 ° to 90 °. In more detail, the smaller the magnitude of the polarization vector 1001 according to the central portion 104, that is, the smaller the area of the central portion 104, the closer 0 is to 90 degrees. The linearly polarized light detecting element 107 does not necessarily need to be placed directly behind the azimuthally polarized optical element 103. However, if we consider from the Frey's imaging theory, that is, the component of the light spot focused on the light-condensing point of the lens, the effective beam as a whole expands uniformly behind the lens, but the closer to the light-condensing point, the The uniformity disappears. That is, the directions of the resultant force vectors 1003a and 1003b on the circles of Figs. 10a and 10b are the same as any part of the χγ plane behind the condenser lens 106. In other words, the components of the side lobe wheel of the super-resolution light spot are spread uniformly in the effective light beam 105 directly behind the condensing lens 106. However, 'closer to the light-condensing point p, that is, the point where the light spot is slowly imaged', cannot remove the components of the side lobe wheel, so it is more inconvenient β < Second Embodiment > Next, it will be described using FIG. 2 According to a second embodiment of the present invention. Figure 2 depicts a cross-sectional view of the optical device. However, the actual optical device is a rotationally symmetric shape with the optical axis 201 as the rotation axis, and the line is offset from the paper. The Chinese paper standard (CNS> A4 specification (210 X 297 mm) (Please read the notes on the back and fill in this form-* ^ 9 | -install if: 12 A7 B7 0 Printed by the Shellfish Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (10) Light 202 is a light beam emitted from a laser light source such as a semiconductor laser, which is not shown in the figure. _A collimated lens or the like is used to convert the light into a substantially parallel light beam. Polarized optical element 203. At this time, the central portion 204 of the azimuth polarized optical element 203 (the oblique line portion in the figure) is rotated by 90 degrees in the polarization direction of the linearly polarized light 202 of this portion to make it It is approximately the same as the X-axis direction. Moreover, the azimuth polarizing optical element 203 has no phase distribution for the linearly polarized light 202, that is, the beam passing through the central portion 204 of the azimuth polarizing optical element 203 and the beam passing through other portions thereof. Light path The same is true. The effective light beam 206 passing through the azimuth-polarizing optical element 203 is condensed at the point P by the condenser lens 207. At this time, as shown in International Publication No. W98 / 15952, an ultra-thin beam is generated at the point P. Resolution phenomenon "that is, the light passing through the central portion 204 is rotated by 90 degrees than the light passing through the other portions. Therefore, it is known that the orthogonal polarized lights do not interfere with each other. Therefore, the central portion For the rest, 204 is as if it were used as a shielding mask. The polarization selecting mechanism 208 removes the side lobe wheel of the super-resolution light spot formed at point P according to the azimuth polarizing optical element 203. As shown in FIG. The difference between the first embodiment of the present invention is the use of a liquid crystal element as an azimuth-polarizing optical element without phase modulation. First, in order to make the present invention easier to understand, the orientation of light according to the light of the liquid crystal element will be described using the 11th and 11th drawings. Polarization function and phase modulation function. Figures 11a and 11b show the azimuth polarizers of the general homogeneous type liquid crystal element and the rotational nematic liquid crystal element that can be controlled by the electric pattern in a pattern. The glass substrate to film in 1101 by the transparent electrode of this paper have scales applicable Chinese National Standard (CNS) A4 size (210 X 297 mm) (Please read the back of the precautions to fill out this page)

I ----- —訂 ---I I I I I 13 A7I ----- --Order --- I I I I I 13 A7

經濟部智慧財產局貝工消费合作社印製 五、發明說明（il ) 夾住液晶分子1102/在入射側之玻璃基板上 ，所有之液晶 的配向軸1103之方向乃與γ轴方向相一致。但是，在出射 側之玻璃基板上，液晶之配向軸11〇3之方向，其上半部乃 與Y軸方向一致，惟’下半部就與X軸方向相一致。 液晶分子1102具有將其長轴方向對準於配向軸方向之 性質以及作為連嬪體之功用的性質。其結果，如在第11a ΓΝ 囷所示’液晶元件之上半部的液晶分子1102平行於Υ軸方 向並稱之為同質性型液晶。又，液晶元件之下半部的液晶 分子1102以平滑徐徐旋轉9〇度，而稱之為9〇度旋轉向列型 液晶* 對該液晶元件，若於γ轴方向有經予直線偏光之入射 直線偏光1104入射之時’即，由於液晶分子之介電異方性 之故’使入射直線偏光1104之偏光轴，於結果上就沿著液 晶分子1102之長轴方向予以傳送。即出射直線偏光11〇5之 偏光軸，其上半部成為Υ轴方向而下半部就成為X軸方向 且相互直交》換言之，傳送90度旋轉向列型液晶元件之直 線偏光，乃會受到90度方位偏光作用。 若設液晶分子之長軸方向的折射率為nl，短軸方向之 折射率為n2以及液晶層厚為d之時，前進於液晶層内之入 射直線偏光1104的光路長，其上下雙方均得以η1><ά所表 示。因此，於兩者間不會因光路長而產生相位差。即，該 液晶元件對於入射直線偏光1104不具有相位分佈。 以嚴格而言’欲使入射直線偏光1104作為直線偏光予 以出射’即，入射直線偏光Π04之偏光轴的方向應與入射 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公芨） — II — — — — — — I - — I - I 訂-! — - . (請先閲讀背面之注意事項再填窝本頁) -14 - 五、發明說明（12 ) 0 A7 B7 痤齊Sr皆瘘时轰苟貝Μ消费合作：印製Printed by Shelley Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the Invention (il) The liquid crystal molecules 1102 / are held on the glass substrate on the incident side, and the orientation axis of all liquid crystals 1103 is consistent with the γ-axis direction. However, on the glass substrate on the emission side, the upper half of the alignment axis of the liquid crystal is aligned with the Y-axis direction, but the lower half is aligned with the X-axis direction. The liquid crystal molecules 1102 have the property of aligning the major axis direction with the alignment axis direction and the property of functioning as a flail. As a result, the liquid crystal molecules 1102 in the upper half of the liquid crystal element as shown in 11a ΓN 平行 are parallel to the z axis direction and are referred to as a homogeneous type liquid crystal. In addition, the liquid crystal molecules 1102 in the lower half of the liquid crystal element are rotated 90 degrees smoothly and smoothly, and are referred to as 90-degree rotated nematic liquid crystals. * If the liquid crystal element has a linearly polarized light incident in the γ-axis direction, When the linearly polarized light 1104 is incident, that is, due to the dielectric anisotropy of the liquid crystal molecules, the polarization axis of the incident linearly polarized light 1104 is transmitted along the long axis direction of the liquid crystal molecules 1102 as a result. That is, the polarizing axis of the emitted linearly polarized light 1105, the upper half of which becomes the Υ-axis direction and the lower half becomes the X-axis direction and are orthogonal to each other. 90 degree azimuth polarization. If the refractive index of the long-axis direction of the liquid crystal molecules is nl, the refractive index of the short-axis direction is n2, and the thickness of the liquid crystal layer is d, the optical path length of the incident linearly polarized light 1104 advancing in the liquid crystal layer is long. η1 > < ά. Therefore, there is no phase difference between the two due to the optical path length. That is, this liquid crystal element has no phase distribution with respect to the incident linearly polarized light 1104. Strictly speaking, 'the incident linearly polarized light 1104 is to be emitted as linearly polarized light', that is, the direction of the polarization axis of the incident linearly polarized light 04 should be the same as the incident Chinese paper standard (CNS) A4 specification (210 X 297 cm) — II — — — — — — I-— I-I Order-! —-. (Please read the notes on the back before filling in this page) -14-V. Description of the invention (12) 0 A7 B7 Acne Sr Consumption Cooperation: Printing

Ji 側之配向軸1103的方向，即，液晶分子長轴，相一致且必 需[2X(nl-n2)Xd+ Λ]為3、15、35等之任一的平方根， 為眾所知。於此，nl為液晶分子之長轴的折射率，n2為液 晶分子之短轴的折射率，λ [nm]為入射光之波長，以及 d[nm]為液晶層厚或單元間隙。而於此，+ 3]專於3之％合，稱為第一最小值，等於15之場合為第二 最小值，而等於35為第三最小值。該數值乃由式[(1+χ)=(2 Χη)(η為整數）]所導出，而於η= ι(對應於第一最小值）時， x=3、於η=2(對應於第二最小值）時，χ=ΐ5、於η=3(對應於 第三最小值）時，χ=35。一般而言，η愈高，即，對於溫度 之變動或波長變動更可予保證有穩定之直線偏光的光之出 射。但是，相反之，其對時間之響應性或視野角變差為其 缺點。在本實施例，係不將時間之饗應性或視野角作為重 點之故，η值以愈高愈佳。不過，η若為過高之時，會產生 液晶配向狀態不穩定之缺點。因此，η以採用3至10之範圍 為宜，且採用3至6之範圍的η值為更佳。惟，所使用之光 的波長’液晶分子之折射率及液晶層之厚度雖未嚴格滿足 前式之條件，亦不會產生甚大之不方便。 為嚴格予以滿足前式而予設計理想之液晶的場合，而 於熱性上有搖晃之時，其元件就有不以理想性動作之場合 。由於此，就予外加在第13圓所示之液晶的T-V曲線上的 臨界電壓（Vth)使其動作就可以。而在第13圖所示之T-V曲 線係將於本實施例所使用之以平行配置的偏光板夹住90度 旋轉向列型液晶（以不外加電壓就無光出射之狀態）並予外 <請先閱讀背面之注意事項再填寫本頁) rl 裝 Ή ---------fl- 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 x 297公釐） 15 C _ C __ 經濟部智慧財產局貝工消費合作社印製 A7 B7 五、發明說明（13 ) 加在液晶之電壓V，與透過率T之關係作成圖表者。於此 ，對元件外加Vth之電壓（通常為以有效電壓係1〜1.5 V)的 v 場合，最不會產生漏光且方位偏光性亦動作為最理想，而 熱之晃動的影響亦少。 介著鍍膜在玻璃基板之透明電極而依電源1106加Z軸 方向之電場於液晶元件，即，如在第lib圖所示，使所有 V之液晶分子1102的長轴均排列為電場之方向的Z轴方向而 靜止’而將該狀態構為同種型類。此時，出射直線偏光1〇〇5 於液晶元件的上下側均與入射直線偏光1004為同樣之Y轴 方向’即’於下側之方位偏光機能新消失。又此時，前進 於液晶層内之入射直線偏光1004之光路長為2Xcl。又，以 控制所外加之電壓的大小亦能予形成為旋轉向列或著同質 性與同種型之中間狀態β又，使用為方位偏光光學元件之 時，經常加予臨界值電壓Vth或其近傍之電壓，即，可使 方位偏光機能更為理想之動作，亦為眾所知。 其次，對在第2圖上使用前述液晶元件之方位偏光光 學元件203的構造，利用第12圖作說明。於第12a圖，以中 央之圖形所表示之斜線部份為90度旋轉向列型液晶元件 1201 ’而其餘之部份為同質性型液晶元件12〇2。 第12b圖為另一構造，以中央之長方形所表示之斜線 部份為90度旋轉向列型液晶元件1201，而其餘之部份為同 質性型液晶元件1202。如第12b圈之構造，90度旋轉向列 型液晶元件1201之Y轴方向跨越所有之有效光束，並且， 90度旋轉向列型液晶元件1201之X轴方向跨越於有效光束 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） — — — — — — — — — — - I I I — I I I '— — —— — I — I (請先閱讀背面之注意事項再填寫本頁) 16 A7 B7 絰濟邨智慧財產局員工消费合作社印製 .五、發明說明（14) - 之一部份的場合，就僅在X轴方向產生超解像》 又，通過電極1203而加適當之電壓於液晶時，即，所 有之液晶均成為同種型狀態而失去方位偏光性。 而在第12a圖及第12b圖，將作為90度旋轉向列型液晶 元件所表示之部份，與作為同質性型液晶元件所表示之部 份’互相對換之場合，即’將作為偏光選擇機構之直線偏 ^ 光檢波元件107的方位0，作適當之考量亦可獲得同樣之 效果* 作為偏光選擇機構之直線偏光檢波元件208方面，即 ’可使用直線偏光遽光、偏光板、偏光性繞射元件、偏 光光束分束器。或配置在布魯斯特角度之反射鏡等。其在 本發明之所有的實施例均為同樣。 其次’說明在第2囷所示之本實施例的動作。於第2圖 係描繪光學裝置之截面圖，惟，實際之光學裝置乃以光軸 201作為旋轉轴之旋轉對稱形，面γ轴方向之直線偏光2〇2 ^ 乃通過方位偏光光學元件203。此時，方位偏光光學元件2〇3 之中央部（斜線部）(從γ抽方向向著X轴方向作旋轉），乃由 90度旋轉向列型液晶元件204所構成，其係使直線偏光2〇2 之偏光方向作90度旋轉而作為X轴方向。又，使方位偏光 光學元件203設為如在第12a圖所示者’即，其中央部以外 乃由同質性型液晶元件205所構成，而無方位偏光機能。 並且此時’對於直線偏光202之有效光束206，方位偏光光 學元件203不具有相位分佈’乃由前述說明已_明確。而且 ，各液晶元件之直線偏光202的入射侧之液晶分子的配向 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） (請先閱讀背面之注意事項再填寫本頁) rl i I I--- 訂 — — — — — 111 —The direction of the alignment axis 1103 on the Ji side, that is, the long axis of the liquid crystal molecules, is consistent and requires [2X (nl-n2) Xd + Λ] to be a square root of any of 3, 15, 35, and the like, which is known. Here, nl is the refractive index of the long axis of the liquid crystal molecules, n2 is the refractive index of the short axis of the liquid crystal molecules, λ [nm] is the wavelength of the incident light, and d [nm] is the thickness of the liquid crystal layer or the cell gap. And here, + 3] specializes in 3%, which is called the first minimum value. When it is equal to 15, it is the second minimum value, and when it is equal to 35, it is the third minimum value. This value is derived from the formula [(1 + χ) = (2 χη) (η is an integer)], and when η = ι (corresponding to the first minimum value), x = 3 and η = 2 (corresponding to At the second minimum value), χ = ΐ5, and at η = 3 (corresponding to the third minimum value), χ = 35. In general, the higher η, that is, the more stable the linearly polarized light can be emitted with respect to temperature changes or wavelength changes. However, on the contrary, its responsiveness to time or deterioration of the viewing angle are its disadvantages. In this embodiment, it is not the focus of time or field of view that is important, and the higher the value of η, the better. However, if η is too high, there is a disadvantage that the alignment state of the liquid crystal is unstable. Therefore, η is preferably in the range of 3 to 10, and η is more preferably in the range of 3 to 6. However, although the wavelength of the light used, the refractive index of the liquid crystal molecules, and the thickness of the liquid crystal layer do not strictly satisfy the conditions of the foregoing formula, it does not cause much inconvenience. Where an ideal liquid crystal is designed to strictly satisfy the previous formula, and when there is a shake in thermal properties, there is a case where its element does not operate with ideality. For this reason, it is sufficient to apply a threshold voltage (Vth) on the T-V curve of the liquid crystal shown in the 13th circle to make it operate. The TV curve shown in FIG. 13 is to hold a 90-degree rotating nematic liquid crystal (a state where no light is emitted without applying a voltage) by sandwiching a 90-degree rotating nematic liquid crystal with a polarizer arranged in parallel in this embodiment. ; Please read the precautions on the back before filling this page) rl decoration --------- fl- This paper size is applicable to China National Standard (CNS) A4 (21〇x 297mm) 15 C _ C __ Printed by the Shelley Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (13) The graph of the relationship between the voltage V applied to the liquid crystal and the transmittance T. Here, when v is applied to the element with a voltage of Vth (usually in the effective voltage range of 1 to 1.5 V), it is most ideal that light leakage does not occur, and azimuth polarization is also optimal, and the influence of thermal vibration is also small. Via the transparent electrode coated on the glass substrate, the electric field in the Z-axis direction is applied to the liquid crystal element according to the power source 1106, that is, as shown in FIG. 11i, the long axes of all V liquid crystal molecules 1102 are aligned in the direction of the electric field. The Z-axis is stationary, and this state is constituted as an isotype. At this time, both the outgoing linearly polarized light 1005 on the upper and lower sides of the liquid crystal element are in the same Y-axis direction as the incident linearly polarized light 1004, that is, the azimuth polarizing function on the lower side is newly disappeared. At this time, the optical path length of the incident linearly polarized light 1004 traveling in the liquid crystal layer is 2Xcl. In addition, by controlling the magnitude of the applied voltage, it can be formed into a rotating nematic or an intermediate state β of homogeneity and isotype. When used as an azimuth polarizing optical element, a threshold voltage Vth or its vicinity is often applied. It is also known that the voltage can make the azimuth polarizer function more ideally. Next, the structure of the azimuth polarizing optical element 203 using the aforementioned liquid crystal element in Fig. 2 will be described using Fig. 12. In Fig. 12a, the oblique line portion indicated by the central figure is a 90-degree rotating nematic liquid crystal element 1201 ', and the remaining portion is a homogeneous liquid crystal element 1202. Fig. 12b shows another structure. The oblique portion indicated by the rectangle in the center is a 90-degree rotating nematic liquid crystal element 1201, and the remaining portion is a homogeneous liquid crystal element 1202. As in the structure of circle 12b, the Y-axis direction of the 90-degree rotating nematic liquid crystal element 1201 spans all the effective light beams, and the X-axis direction of the 90-degree rotating nematic liquid crystal element 1201 spans the effective light beams. This paper scale applies to China. National Standard (CNS) A4 Specification (210 X 297 mm) — — — — — — — — — — — — — — — — — — — — — — I — I (Please read the precautions on the back before filling this page) 16 A7 B7 Printed by the Consumer Cooperative of the Jiji Village Intellectual Property Bureau. V. Invention Description (14)-Part of the occasion, the super resolution is generated only in the X-axis direction. Also, the electrode 1203 is used to add appropriate When the voltage is applied to the liquid crystal, that is, all the liquid crystals become the same type state and lose azimuth polarization. In Figs. 12a and 12b, when the part indicated as a 90-degree rotating nematic liquid crystal element is interchanged with the part indicated as a homogeneous liquid crystal element, that is, it will be used as polarized light. The linear polarization of the selection mechanism ^ Orientation 0 of the light detection element 107, and the same effect can be obtained by appropriate considerations * As for the linear polarization detection element 208 of the polarization selection mechanism, that is, 'linear polarization chirping, polarizing plates, and polarized light can be used Diffractive element, polarizing beam splitter. Or mirrors configured at Brewster angle. It is the same in all embodiments of the present invention. Next, the operation of this embodiment shown in the second step will be described. Figure 2 is a sectional view of the optical device. However, the actual optical device is a rotationally symmetric shape with the optical axis 201 as the rotation axis, and the linearly polarized light 202 in the plane γ-axis direction passes through the azimuth-polarized optical element 203. At this time, the central portion (slanted portion) of the azimuthally polarized optical element 203 (rotated from the γ pumping direction toward the X-axis direction) is composed of a 90-degree rotation nematic liquid crystal element 204, which is linearly polarized 2 The polarized light direction of 〇2 is rotated by 90 degrees as the X-axis direction. The azimuth-polarizing optical element 203 is made as shown in Fig. 12a, that is, the center portion is made of a homogeneous liquid crystal element 205 except for the central portion, and has no azimuth-polarizing function. And at this time, 'for the effective beam 206 of the linear polarized light 202, the azimuth polarized optical element 203 does not have a phase distribution' has been clarified by the foregoing description. Moreover, the alignment of the liquid crystal molecules on the incident side of the linearly polarized light 202 of each liquid crystal element is in accordance with the Chinese National Standard (CNS) A4 specification (210 X 297). (Please read the precautions on the back before filling this page) rl i I I --- subscription — — — — — 111 —

17 經濟部智慧財產局員工消费合作社印製 A7 _____ B7___ 五、發明說明（15 ) 軸方向、大約為γ軸方向。 通過方位偏光光學元件203之有效光東2〇6，乃由聚光 透鏡207而聚光於P點。此時，於p點就會產生超解像現象 。即’通過90度旋轉向列型液晶元件2〇4之直線偏光，比 通過同質锉型液晶元件205之直線偏光，將偏光轴乃作9〇 度旋轉。 此時’將γ轴方向作為〇度而向著X轴方向予以量測， 而約於60度之方位，將直線偏光檢波元件208設置於方位 偏光光學元件203之正後面’其結果，乃如前述，能從超 解像光點予以去除旁辮輪。而在本發明之其他實施例，作 為偏光選擇機構之直線偏光檢波元件的方位亦與上述同樣 ，並由其同樣能予去除旁瓣輪。 <第3實施例> 其次，利用第3圖說明依據本發明之第3實施例。本實 施例係將本發明應用於光碟之拾音器者。在第3圖乃描繪 ^ 光學裝置之截面圖。惟，實際之光學裝置乃以光軸301作 為旋轉軸之旋轉對稱形。Y軸方向之直線偏光302會通過 以電氣信號可控制方位偏光機能之方位偏光光學元件303 。此時，方位偏光光學元件303之中央部份304(於圖中為 斜線部份）乃使直線偏光302之偏光方向90度旋轉並作為X 軸方向，而中央部份304以外之部份就不具有方位偏光機 能。又，方位偏光光學元件303對於直線偏光302不具有相 位分佈。即，於方位偏光光學元件303之中央部份304及其 以外之部份，對於直線偏光302即其光路長為相同。通過17 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _____ B7___ V. Description of the invention (15) The axis direction is about the γ axis direction. The effective light 206 passing through the azimuth-polarizing optical element 203 is condensed by the condenser lens 207 at point P. At this point, a super-resolution phenomenon occurs at the p point. That is, the linear polarization of the nematic liquid crystal element 204 by 90 ° rotation is 90 ° than that of the linear polarization of the homo file type liquid crystal element 205. At this time, 'the γ-axis direction is measured as 0 degrees toward the X-axis direction, and the azimuth polarization detection element 208 is placed directly behind the azimuth polarization optical element 203 at an azimuth of about 60 degrees', as described above. , Can remove the side braid wheel from the super-resolution light spot. In other embodiments of the present invention, the orientation of the linearly polarized light detection element as the polarization selection mechanism is the same as that described above, and the side lobe wheel can also be removed by it. < Third embodiment > Next, a third embodiment according to the present invention will be described using FIG. This embodiment is a person who applies the present invention to a pickup of an optical disc. Figure 3 is a cross-sectional view of the optical device. However, the actual optical device is a rotationally symmetric shape with the optical axis 301 as a rotation axis. The linearly polarized light 302 in the Y-axis direction is controlled by an azimuth polarizing optical element 303 that can control the azimuth polarizing function by an electric signal. At this time, the central portion 304 (the oblique line portion in the figure) of the azimuth polarizing optical element 303 rotates the polarization direction of the linearly polarized light 302 by 90 degrees and serves as the X-axis direction, while the portion other than the central portion 304 With azimuth polarization function. The azimuth-polarized optical element 303 does not have a phase distribution with respect to the linearly polarized light 302. That is, the optical path length is the same for the linearly polarized light 302 at the central portion 304 and other portions of the azimuthally polarized optical element 303. by

本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ~~Z -----— — — — — .丨 — S 訂— 1 — ！ . <請先閱讀背面之注意事項再填寫本頁) A7 B7 五、發明說明（16) • 方位偏光光學元件303之有效光束305將通過光分離元件 308，並依第1聚光透鏡306而聚光於光碟3〇7上之？點。此 時，如在國際公開WO 98/15925號公報所示，在p點會產 生超解像現象《即，通過中央部份304之光比通過其餘部 份之光’其偏光抽乃作90度旋轉。因此，由於所直交之直 線偏光相互不干涉乙事為眾所知之故，中央部份304對於 m 其餘部份而言，正如同被作遮蔽屏罩般之作用。 在光碟307上所聚光之超解像光點，就讀取光碟3〇7之 凹坑的信號並予反射。其反射光再度通過第1聚光透鏡3〇6 並由光分離元件308所分離，且依第2集光透鏡309聚光於 光信號檢出元件310上。但是’聚光在光信號檢出元件31〇 上之光點仍然為具有旁瓣論之光點。於光碟307上，超解 像光點之主瓣輪就讀取目的之凹坑。但是，兩脇之旁瓣輪 有讀取所m接之凹坑的場合。該場合之反射光就成為雜音 成份。 Φ 於此，將直線偏光檢波元件311設置在第2集光透鏡309 之近傍而作為偏光選擇機構，並且，將其方位如前述設置 為與具有旁瓣輪之直線偏光之方位相直交，即，在光信號 檢出元件310乃不聚光旁瓣輪，即，從檢出光能予去除雜 音成份。 又，在本實施例上，乃將直線偏光檢波元件311配置 在光分離元件308與第2集光聚光309之間，但，直線偏光 檢波元件311之位置並不限於此。因此，將直線偏光檢波 元件311設置於第1聚光透鏡306之近傍，從開端聚光在光 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閲讀背面之注意事項再填寫本頁) 裝 ^1 ^1 «1— ^1 1_ ^1 ^1 ϋ _ itfit Sr皆择讨i笱貝!.消費合阼ii印製 經濟部智慧財產局具工消费合作社印製 A7 B7 五、發明說明（17 ) 碟307之解像光點’配置為去除旁瓣輪就可以。其場合， 一般而言，直線偏光檢波元件由於不完全為透明之故，聚 光於光碟307之光利用率就會下降。因此，通常就在光信 號檢出το件310之瞬前，予以去除旁瓣輪之成份就足夠。 而且，直線偏光檢波元件311不一定要設置在第2聚光 透鏡309之近傍》但是，如從弗利葉成像論來考量，即， 〇 集中於透鏡之聚光點的光點之成份，於透鏡之正後面乃對 有效光采整體為作用稱之擴展，但，愈靠近聚光點，即其 均一性（同樣性）就愈消失。即，於第10a圊吸第10b圖，合 力向量1003a及1003b之方向，於第2聚光透鏡309之近傍， 取XY平面上之任一部份均為同樣。但是，愈靠近光信號 檢出元件310，光點就徐徐成像之故，其同樣性就消失。 換言之’將直線偏光檢波元件311靠近於光信號檢出元件 310之時’在χγ平面上僅有部份性能予去除旁瓣輪之成份 ，因此，不十分方便。 〇 於此，依電氣信號而將方位偏光光學元件3〇3之方位偏光 機能予以停止’即，超解像就被消滅而成為通常解像。其 乃依電氣信號切換為超解像與通常解像。例如，能將通常 解像時作為CD之光碟凹坑的讀取，而將超解像時使用為 比CD凹坑為更細微之DVD的光碟之讀取。 <第4實施例> : 其次，利用第4圖說明依據本發明之第4實施例β在本 實施例，係將本發明應用於光碟之拾音器者》在第4圖係 描燴光學裝置之截面圖，惟，實際之光學裝置乃以光轴4〇1 本紙張尺度通用中國國家標準（CNS)A4規格（210 X 297公釐） - I I I I I II--. I I I — — I I ^ « — — — — — I — I . (請先閲讀背面之注意事項再填寫本頁) 20 經濟部智慧財產局員工消費合作社印製 A7 B7_ 弄、發明說明（18 ) , 作為旋轉軸之旋轉對稱形。Y轴方向之直線偏光402會通 ^其方位偏光機能由電源413所供給之電氣信號為控制可 能之方位偏光光學元件403。此時，方位偏光光學元件403 之中央部份404(於圖中為斜線部份）乃將直線偏光402之偏 光方向作90度旋轉且作為X轴方向，而中央部份404以外 之部份就不具有方位偏光機能。又，方位偏光光學元件403 _ 對於直線偏光402不具有相位分佈。即，於方位偏光光學 元件403之中央部份404及其以外之部份，對於直線偏光402 而言，其光路長為同樣。通過方位偏光光學元件403之有 效光束406會通過光分離元件407並依第1聚光透鏡408而聚 光在光碟409上之P點。此時，如在國際公開WO 98/15952 號公報所示，在P點會產生超解像現象。即，通過中央部 份404之光比通過其餘部份之光，其偏光軸乃作90度旋轉 。由於此，所直交之直線偏光相互不干涉為眾·所知之故， 中央部份404對於其餘部份正如同被作遮蔽屏罩之功用（動 φ作）。 聚光在光碟409上之超解像光點，將讀取光碟409之凹 坑的信號而反射。其反射光將再度通過第1聚光透鏡408並 依光分離元件407所分離，再由第2聚光透鏡410而聚光於 光信號檢出元件411。但是，於光信號檢出元件411上所聚 光之光點，仍然為具有旁瓣輪之光點。在光碟409上，超 解像光點之主瓣輪就讀取其目的之凹坑。不過，兩脇之旁 瓣輪有時會讀取其所鄰接之凹坑的場合。該場合之反射光 就成為雜音。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 21 (請先閱讀背面之注意事項再填寫本頁) 訂-This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) ~~ Z -----— — — — — 丨 — S Order — 1 —! < Please read the notes on the back before filling this page) A7 B7 V. Description of the invention (16) • The effective beam 305 of the azimuth polarizing optical element 303 will pass through the light separation element 308 and follow the first condenser lens 306. Concentrating on disc 307? point. At this time, as shown in International Publication No. WO 98/15925, a super-resolution phenomenon occurs at the p point, that is, the light passing through the central portion 304 is more polarized than the light passing through the remaining portion. Spin. Therefore, since it is known that the linearly polarized lights that are orthogonal to each other do not interfere with each other, the central part 304 acts as a shielding screen for the rest of m. The super-resolution light spot collected on the optical disc 307 reads the signal of the pits of the optical disc 307 and reflects it. The reflected light passes through the first condenser lens 306 again and is separated by the light separation element 308, and is condensed on the optical signal detection element 310 by the second condenser lens 309. However, the light spot condensed on the optical signal detection element 31o is still a light spot with side lobe theory. On the optical disc 307, the main lobe wheel of the super-resolution light spot reads the target pit. However, there are occasions when the side lobe of the two flank is read by the pit next to the m. The reflected light in this case becomes a noise component. Φ Here, the linearly polarized light detection element 311 is set close to the second collection lens 309 as a polarization selecting mechanism, and its orientation is set to intersect the orientation of linearly polarized light having a side lobe as described above, that is, The optical signal detecting element 310 does not condense the sidelobe wheels, that is, noise components are removed from the detected light energy. In this embodiment, the linearly polarized light detection element 311 is disposed between the light separation element 308 and the second collected light 309, but the position of the linearly polarized light detection element 311 is not limited to this. Therefore, the linearly polarized light detection element 311 is set near the first condenser lens 306, and the light is collected from the beginning. The paper standard is China National Standards (CNS) A4 (210 X 297 mm). (Please read the Please fill in this page again) Note ^ 1 ^ 1 «1— ^ 1 1_ ^ 1 ^ 1 ϋ _ itfit Sr all choose to discuss i 笱 贝!. Consumption Cooperation ii Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs System A7 B7 V. Description of the invention (17) The resolution light spot of the disc 307 can be configured to remove the side lobe wheel. In this case, in general, since the linearly polarized light detection element is not completely transparent, the utilization rate of light condensed on the optical disc 307 will decrease. Therefore, it is usually sufficient to remove the components of the side lobe wheel just before the optical signal detects the το member 310. Moreover, the linearly polarized light detection element 311 does not necessarily need to be disposed near the second condenser lens 309. However, if considered from the Fourier imaging theory, that is, the component of the light spot concentrated on the light-condensing point of the lens is Behind the lens is an extension of the effective light as a whole, but the closer it is to the spot, the more uniformity (identity) will disappear. That is, the directions of the resultant force vectors 1003a and 1003b in the direction of the combined force vectors 1003a and 1003b at the 10a and the 10b are the same in any part of the XY plane near the second condenser lens 309. However, the closer it is to the optical signal detection element 310, the more the light spot is imaged, and the similarity disappears. In other words, 'when the linearly polarized light detection element 311 is close to the optical signal detection element 310', only a part of the performance on the χγ plane is used to remove the components of the side lobe, so it is not very convenient. 〇 Here, the azimuth polarizing function of the azimuth polarizing optical element 303 is stopped according to the electric signal ', that is, the super-resolution is eliminated and becomes the normal resolution. It switches between super-resolution and normal resolution based on electrical signals. For example, it is possible to read the pits of a CD which is a CD during normal resolution, and to read DVDs which are finer than the CD pits during super-resolution. < Fourth embodiment >: Next, the fourth embodiment according to the present invention will be described with reference to FIG. 4. In this embodiment, the optical pickup is applied to the present invention. The optical device is depicted in FIG. Sectional view, however, the actual optical device is based on the optical axis of 401. This paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210 X 297 mm)-IIIII II--. III — — II ^ «— — — — — I — I. (Please read the precautions on the back before filling out this page.) 20 Printed by A7 B7_, Invention Description (18) of the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives, as a rotationally symmetric shape of the rotation axis. The linearly polarized light 402 in the Y-axis direction passes through. The azimuth polarizing function is controlled by the electric signal supplied from the power source 413 to control the possible azimuth polarizing optical element 403. At this time, the central portion 404 (the oblique line portion in the figure) of the azimuthally polarized optical element 403 rotates the polarization direction of the linearly polarized light 402 by 90 degrees and serves as the X-axis direction, and the portion other than the central portion 404 is Does not have azimuth polarization function. The azimuth polarized optical element 403 _ does not have a phase distribution with respect to the linearly polarized light 402. That is, the optical path length of the linearly polarized light 402 in the central portion 404 and other portions of the azimuthally polarized optical element 403 is the same. The effective light beam 406 passing through the azimuth-polarizing optical element 403 passes through the light separating element 407 and is condensed on the P point on the optical disc 409 by the first condenser lens 408. At this time, as shown in International Publication No. WO 98/15952, a super-resolution phenomenon occurs at the point P. That is, the light passing through the central portion 404 is rotated by 90 degrees than the light passing through the other portions. Because of this, it is known that the linearly polarized lights that are orthogonal to each other do not interfere with each other. The central portion 404 acts as a mask for the rest (moving φ). The super-resolution light spot condensed on the optical disc 409 reflects the signal of reading the pits of the optical disc 409. The reflected light passes through the first condenser lens 408 again and is separated by the light separating element 407, and is then collected by the second condenser lens 410 to the optical signal detection element 411. However, the light spot condensed on the optical signal detection element 411 is still a light spot with a side lobe wheel. On the optical disc 409, the main lobe wheel of the super-resolution light spot reads the pit of its purpose. However, the side lobe wheels of the two flank sometimes read the pits adjacent to it. The reflected light in this case becomes noise. This paper size applies to Chinese National Standard (CNS) A4 (210 X 297 mm) 21 (Please read the precautions on the back before filling this page) Order-

五、發明說明（19 ) Γ_Γ 經濟部智慧財產局員工消费合作社印製 Α7 Β7 於此，乃將直線偏光檢波元件412設置在第2聚光透鏡 410之近傍作為偏光選擇機構，並且，如前述將其方位設 置為與具有旁瓣論之直線偏光的方位相直交之時，即，在 光信號檢出元件411就不聚光旁瓣輪。即，能從檢出光去 除雜音成份。 本實施例在基本上乃與第3實施例相同，但，以電氣 信號為控制可能之方位偏光光學元件403方面，乃使用與 第2實施例為同樣之液晶元件。 利用圖面簡單作說明。Y軸方向之直線偏光402入射 於在第12圖（a)所示之方位偏光光學元件403。此時，方位 偏光光學元件403之中央部（斜線部）乃由90度旋轉向列型 液晶元件404所構成，且將直線偏光402之偏光方向作90度 旋轉並作為X軸方向。而方位偏光光學元件403之中央部 以外就由同質性型液晶元件405所構成而無方位偏光機能 。此時，對於直線偏光402之有效光束406，方位偏光光學 元件403不具有相位分佈，己由前述說明即可明瞭β並且 ，各液晶元件之直線偏光402之入射侧的液晶分子之配向 軸方向大約為Υ軸方向。 透過方位偏光光學元件403之有效光束406將透過光分 離元件407，並以第1聚光透鏡408而聚光於光碟409 »於光 碟409所超解像之光點就讀取凹坑之信號並予反射。然後 ’再透過第1聚光透鏡408，且以棱鏡或半反射鏡等所構成 之光分離元件407所分離，而以第2聚光透鏡410聚光於光 信號檢出元件411上。此時，由設置在第2聚光透鏡410近 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公；S ) 22 A7 -五、發明說明（2〇 傍而作為偏光選擇機構之直線偏光檢波元件412,如前述 ’使在光檢出元件411上之旁瓣輪可予去除。 又’光碟基板等具有較大之複素數折射的場合，即， 反射或透過光碟之超解像光點的旁瓣輪所作成之合力向量 有可能成為橢圓偏光。其場合，超解像光點之旁瓣輪以直 線偏光檢波元件412不能完全予以去除。但是，故意使方 位偏光光學元件403具有複素數拆射性，而與光碟基板等 之複素數折射相互抵消，就能予去除超解像光點之旁瓣輪 抵消光碟基板等之複素數折射的方法方面，係考量對 通過方位偏光光學元件之光束，故意供與適當之橢圓偏光 的方法。直線偏光因光碟基板之複素數折射而成為橢圓偏 光’是故’事先供與將該橢圓偏光予以相抵之橢園偏光就 可以。在具體上，有如下之5種方法。 第1為，將入射直線偏光之偏光轴從液晶之配向轴方 向（液晶分子之長軸方向）稍作偏離而予入射之方法β於此 場合之偏離角度’以-5度至+5度之範圍為佳。如是，將入 射角予以偏離，即，入射直線偏光不僅對液晶分子之長軸 且亦對液晶分子之短軸的成份有所影響且作傳播之故，乃 會產生複素數折射。其結果’自方位偏光光學元件所出射 之光束就成為橢圓偏光。 第2為，偏光轴雖不偏離，惟，對液晶元件整體外加 比臨界電壓（Vth ’參照第13圊）稍高之電壓（以約從臨界電 壓之1_〇至1.3倍之電壓為宜）的方法。若外加比臨界電壓Vth 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 裝--------訂 ---------奢· 經濟部智慧財產局貝工消f合作社印製 23 A7 B7 五、發明說明（21 稍高之電壓時，由於液晶會升起於電場方向之故，對於入 射直線偏光之液晶的實質性之折射率會改變。其結果，液 晶元件就從理想性之動作狀態所偏離，因此，從方位偏光 光學元件所出射之光束就成為橢圓偏光》 第3係’事先將液晶設計為從理想之動作狀態偏離之 狀態下動作的方法。 第4係，在光信號檢出元件411與光碟409之間的光路 ，***與成為發生複素數折射之原因的光碟之基盤為發生 同樣之複素數折射的文件之方法。 第5係將上述4種方法作適當之組合的方法。 又’為修正液晶元件之製造時的偏差或因溫度變化而 起之液晶元件的特性之變化，因溫度變化而生之半導體雷 射光源的光源波長之變化，加予比該電壓Vth為稍高之偏 壓亦可以。 本實施例之方位偏光光學元件403，如在第2實施例所 說明，以電氣性可將方位偏光機能予以停止。因此，使方 位偏光機能予以停止，作為通常解像而進行CD之讀取， 而再使其產生方位偏光機能，作成超解像並予進行讀取比 CD為更小凹坑之DVD ’均為可行。為使CD與DVD雙方之 讀取均為良好，乃將本實施例如下述作變更使用為宣。 使方位偏光光學元件403之方位偏光機能予以停止， 且使用780nm之半導髏雷射作為直線偏光雷射光源，並以 眾所知之CD拾音器用透鏡使用為第1聚光透鏡，而進行CD 或CD-R(寫入可能之CD)之讀取或寫入。然後，予以產生 私紙張尺度適用中國國家標準（CNS〉A4規格（210 X 297公$ ) 請 先 閱 讀 背 面 之 注 意 h\ 填1 寫裝 本？ 頁 訂 經濟部智慧財產局貴工消費合作社印製 24 S 一 ί 絰齊邨智慧財產局貝工消費合作社印製 A7 __B7_ 五、發明說明（22 ) . 方位偏光光學元件403之方位偏光機能，使其產生比超解 像為更細小之光點，並使用眾所知之DVD用拾音器用透 鏡替代上述之CD拾音器用透鏡，以進行DVD之讀取。 素來，於CD或CD-R用上需要780nm之雷射光源，而 DVD用上要650nm之雷射光源，但，如上述之構成，僅以 780 nm之雷射1種，而使CD、CD-R及DVD之讀取等之進 _ 行成為可行。特別是，CD-R因對650nm之光不具有感度 ，而僅依780nm之波長的雷射光源，可進行到DVD之讀取 ，乃非常有效果。 而於此，眾所知之CD拾音器用透鏡與DVD拾音器用 透鏡之更換，以機械性等之眾所知的變更機構就有可能達 成。又，以解像力較高之DVD用之透鏡，通常不以其直 接作CD之讀取等的原因為，DVD與CD之光碟基盤的厚度 ，乃為0_6mm (DVD)與1.2mm (CD)之相異，因此，因光碟 基盤之厚度所產生之球面像差量相異之故。但是，使用以 C 眾所知之1個透鏡而對應於DVD及CD雙方之拾音器透鏡， 即，就讀取DVD之場合與讀取CD之場合，乃不必要進行 透鏡之切換。 並且，方位偏光光學元件403之中心部份404的比率約 為20%之場合，即，光碟上之光點約變小15%，換言之， 其與雷射波長變短15%之實質性為同樣效果。因此，於本 實施例之場合，由於使方位偏光光學元件403之中心部份 404的比率作為20%，即，780nm之雷射波長就變短15%， 乃相當於約663nm，就能形成充分得予讀取DVD之光點。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 25 (請先閲讀背面之注意事項再填寫本頁) 裝 A7 B7 缦濟部智慧財產局貝工消費合作社印製 五、發明說明（23) 而方位偏光光學元件403之中心部份404之比率與光點變為 細小之比率的關係，即因光學裝置之種類多少有變化。 <第5實施例> : 其次’利用第5圖說明依據本發明之第5實施例的光學 裝置》於第5實施例之光學裝置係以可對應於DVD、CD、 CD-R及CD-RW等所有之光拾音器用的光學裝置作為前提 f) 者。為簡化第5圖乃投影於YZ平面之2次元而描繪。實際 之光學裝置係以光轴509作為旋轉轴之旋轉對稱形。而與 本發明無直接關係之檢出光學裝置的部份就予省略。 於第5實施例上之光學裝置係從波長約為780nrn之直 線偏光雷射光源501所出射，而以準直透鏡502作成平行平 面波之直線偏光雷射光503就入射於液晶空間光調變元件 504。液晶空間光調變元件504之液晶分子配向轴乃大約與 直線偏光雷射光源501之偏光轴方向為一致，並且為γ軸 方向。又，液晶空間光調變元件504最少亦由同質性型液 Ο 晶元件所構成而作為繞射型透鏡元件5 0 5之機能的部位（以 左斜線表示之）’以及由90度旋轉向列型液晶所構成而作 為方位偏光元件506之機能的部位（以有斜線表示之），所 構成。而且，其各自之機能乃依從電源511所供給之電氣 信號予以控制。又，作為繞射型透鏡元#505之機能的部 位，乃作為焦點距離Π之透鏡之機能，而作為方位偏光光 學元件506之機能的部位，乃比其他部位具有將入射直線 偏光之偏光軸作90度旋轉之機能。又’作為方位偏光光學 元件506之機能的部位，係以聚光透鏡507之光輛作為中心 (請先閱讀背面之注意事項再填寫本頁) Γ -裝 訂·- f 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 盎犛妒皆赛讨查笱員1-濟費合泎法印製 A7 B7 五、發明說明（24) . 而大約作用於圓形領域508 » 於此，使用第Η圊針對繞射型透鏡元件作說明。第14 圖為表示由一般性之2元型的大約為透明之相位型繞射格 子的光之繞射現象。為簡單化乃以投影在平面之截面圖所 描繪。在以節距ρ反覆具有nl與η2之相異的折射率的厚度d 之相位型繞射格子1401，有雷射光1402入射之時，出射雷 0 射光乃因繞射效應而發生繞射。於此，為簡單化，雷射光 1402乃對相位型繞射格子1401以垂直入射》此時，通常會 發生以其原狀直通之0次光1403，以及分別對0方向及一 0方向繞射之1次光1404及一 1次光1405(繞射角更大之高 次的繞射光亦會發生’但其比率較小乃予忽視），而此時 ，繞射角乃以sin( 0 )= λ /P予以決定。於此，又為雷射光 1402之波長。 此時，對於雷射光1402之nl與η2的領域之面積，大約 為相等’而光路長差（n l-n2) Xd為又/2之時，乃稱之為隆 0 寺格子（光栅）而〇次光1403會消滅，為眾所知。又，光路 長差（nl-n2)xd為久且以節距ρ反覆而將折射率從“至!^ 以連續性予以平滑作變化之時，將其稱為閃耀格子（光栅) 而僅有1次光1404發生，為眾所知。而實際上，從ni至n2 ’以16步階以上作階段性予以變化，即，大約可成為理想 之閃耀格子，亦為眾所知，並將其稱為多準位2元格子（光 栅而於一般，相位型繞射格子比具有不透明之部份的 振幅型繞射格子，其光利用效率較高，乃較有利。如一般 所知’以連續性予以改變該繞射格子之節距，即，有可能 本紙張尺度適用中國國豕標準（CNS)A4規格（210 X 297公爱〉 (請先閱讀背面之注意事項再填寫本頁)V. Description of the invention (19) Γ_Γ Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 Here, the linearly polarized light detection element 412 is set near the second condenser lens 410 as a polarization selection mechanism, and as described above, When the azimuth is set to be orthogonal to the azimuth of linearly polarized light having side lobe theory, that is, the side lobe wheel is not focused by the optical signal detection element 411. That is, noise components can be removed from the detected light. This embodiment is basically the same as the third embodiment, but uses the same liquid crystal element as that of the second embodiment in terms of the directional polarization optical element 403 that can be controlled by an electric signal. Simple explanation using drawings. The linearly polarized light 402 in the Y-axis direction is incident on the azimuth-polarized optical element 403 shown in Fig. 12 (a). At this time, the central portion (slanted portion) of the azimuth-polarizing optical element 403 is composed of a 90-degree rotating nematic liquid crystal element 404, and the polarization direction of the linearly polarized light 402 is rotated by 90 degrees as the X-axis direction. The azimuth polarizing optical element 403 is composed of a homogeneous type liquid crystal element 405 and has no azimuth polarizing function. At this time, for the effective light beam 406 of the linearly polarized light 402, the azimuthally polarized optical element 403 does not have a phase distribution. Β can be understood from the foregoing description, and the alignment axis direction of the liquid crystal molecules on the incident side of the linearly polarized light 402 of each liquid crystal element is approximately It is the axis direction. The effective light beam 406 transmitted through the azimuthally polarized optical element 403 will pass through the light separating element 407 and be focused on the optical disc 409 by the first condenser lens 408. The signal of the pit is read at the light spot super-resolution of the optical disc 409 and I reflect. Then, it passes through the first condenser lens 408 and is separated by a light separation element 407 composed of a prism or a half mirror, etc., and is condensed on the optical signal detection element 411 by the second condenser lens 410. At this time, the second condensing lens 410 is installed near the paper standard to apply the Chinese National Standard (CNS) A4 specification (210 X 297 male; S) 22 A7-V. Description of the invention (20 ° as the polarization selection mechanism) The linearly polarized light detection element 412 can remove the side lobe wheel on the light detection element 411 as described above. Also, in the case of a large complex prime refraction such as a disc substrate, that is, a super-resolution light spot reflecting or transmitting through the disc The resultant force vector created by the side lobe wheel of the lens may become elliptical polarized light. In this case, the side lobe wheel of the super-resolution light spot cannot be completely removed by the linearly polarized detection element 412. However, the azimuth polarization optical element 403 is intentionally provided with a complex prime number splitting It can cancel the complex prime refraction of the optical disc substrate and so on, so that the side lobe wheel of the super-resolution light spot can be eliminated to cancel the complex prime refraction of the optical disc substrate and so on. And appropriate elliptically polarized light. Linearly polarized light becomes elliptically polarized due to the complex prime refraction of the disc substrate. The elliptical polarized light is sufficient. Specifically, there are five methods as follows. The first is to deviate the polarization axis of the incident linearly polarized light from the alignment axis direction of the liquid crystal (the long axis direction of the liquid crystal molecules) and make it incident. The deviation angle of the method β in this case is preferably in the range of -5 degrees to +5 degrees. If it is, the incident angle is deviated, that is, the incident linearly polarized light is not only to the long axis of the liquid crystal molecules but also to the liquid crystal molecules. The composition of the axis is affected and propagated, it will produce complex prime refraction. As a result, the beam emitted from the azimuth polarizing optical element becomes elliptical polarization. The second is that although the polarization axis does not deviate, the A method of applying a voltage slightly higher than the threshold voltage (Vth 'refer to Section 13) (approximately 1 ~ 0 to 1.3 times the threshold voltage). If the threshold voltage Vth is applied, the paper size applies to China. National Standard (CNS) A4 Specification (210 X 297 mm) (Please read the precautions on the back before filling out this page) Installation -------- Order -------- Ministry of Economics and Economy Printed by the Intellectual Property Bureau Shellfish Consumer Cooperative F 23 A7 B7 Five 2. Description of the invention (21 When the voltage is slightly higher, the liquid crystal will rise in the direction of the electric field, and the substantial refractive index of the liquid crystal incident on linearly polarized light will change. As a result, the liquid crystal element will change from the ideal operating state. Deviation, therefore, the beam emitted from the azimuthally polarized optical element becomes elliptically polarized light. "The 3rd series" A method of designing the liquid crystal in advance to deviate from the ideal operating state. The 4th series, the optical signal detection element The method of inserting the optical path between 411 and the optical disc 409 into the base disc of the optical disc that is the cause of complex prime refraction is a method of generating the same complex prime refraction. The fifth is a method of appropriately combining the above four methods. 'In order to correct deviations in the manufacture of liquid crystal elements or changes in the characteristics of liquid crystal elements due to temperature changes, changes in the light source wavelength of semiconductor laser light sources due to temperature changes are added slightly higher than the voltage Vth Biasing is also possible. As described in the second embodiment, the azimuth polarizing optical element 403 of this embodiment can electrically stop the azimuth polarizing function. Therefore, the azimuth polarizing function is stopped, and the CD is read as a normal resolution, and then the azimuth polarizing function is generated to create a super-resolution and read the DVD with smaller pits than the CD. feasible. In order to make both the CD and the DVD read well, the present embodiment is modified as described below. The azimuth polarizing function of the azimuth polarizing optical element 403 was stopped, and a 780 nm semiconducting laser was used as the linearly polarized laser light source, and a known CD pickup lens was used as the first condenser lens to perform CD. Or CD-R (write-able CD) read or write. Then, generate the private paper size to apply the Chinese national standard (CNS> A4 specification (210 X 297 $)) Please read the note on the back h \ Fill in 1 hardcover? Page printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, printed by your co-operative consumer cooperative 24 S 一 ί Printed by Aiqi Village Intellectual Property Bureau Shellfish Consumer Cooperative A7 __B7_ V. Description of the invention (22). The azimuth polarization function of the azimuth polarizing optical element 403 makes it produce smaller light spots than super resolution, And use the well-known lens for DVD pickup instead of the lens for CD pickup to read the DVD. Conventionally, a laser light source of 780nm is required for CD or CD-R, and a DVD of 650nm is used. Laser light source, but with the above-mentioned structure, only one type of laser with 780 nm is used to make CD, CD-R, and DVD readout possible. In particular, CD-R is 650nm. The light has no sensitivity, and only a laser light source with a wavelength of 780 nm can read DVDs, which is very effective. Here, the lens of the CD pickup and the lens of the DVD pickup are known to be replaced. Mechanically known change machines It is possible to achieve this. In addition, the lens for DVDs with higher resolution is usually not used for CD reading. The thickness of the DVD and CD disc substrates is 0-6mm (DVD) and 1.2mm. (CD) is different, therefore, the amount of spherical aberration caused by the thickness of the disc substrate is different. However, using a lens known to C corresponds to the pickup lens of both DVD and CD, that is, In the case of reading a DVD and the case of reading a CD, it is not necessary to switch lenses. In addition, when the ratio of the central portion 404 of the azimuth polarizing optical element 403 is about 20%, that is, the light spot on the optical disc It is about 15% smaller, in other words, it has the same effect as the 15% shorter laser wavelength. Therefore, in the case of this embodiment, the ratio of the central portion 404 of the azimuth-polarizing optical element 403 is set to 20%. That is, the laser wavelength of 780nm is shortened by 15%, which is equivalent to about 663nm, which can form a sufficient light spot to read DVD. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 male) %) 25 (Please read the notes on the back before filling out this ) Installed A7 B7 Printed by Shelley Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (23) The relationship between the ratio of the central portion 404 of the azimuthally polarized optical element 403 and the light spot becomes a small ratio, which is due to the optical The type of the device varies to some extent. ≪ Fifth Embodiment >: Next, the optical device according to the fifth embodiment of the present invention will be described using FIG. 5. The optical device according to the fifth embodiment is compatible with DVD, CD, CD-R, CD-RW, and other optical pickup optical devices are prerequisites f). In order to simplify the fifth figure, it is drawn on the second dimension projected on the YZ plane. Actual optical devices are rotationally symmetric with the optical axis 509 as the rotation axis. The part of the detection optical device which is not directly related to the present invention is omitted. The optical device in the fifth embodiment is emitted from a linearly polarized laser light source 501 with a wavelength of about 780 nrn, and a linearly polarized laser light 503 formed by a collimating lens 502 as a parallel plane wave is incident on the liquid crystal space light modulation element 504 . The alignment axis of the liquid crystal molecules of the liquid crystal spatial light modulation element 504 is approximately the same as the direction of the polarization axis of the linearly polarized laser light source 501, and is the γ-axis direction. In addition, the liquid crystal spatial light modulation element 504 is at least also composed of a homogeneous liquid crystal element and functions as a function of the diffraction lens element 5 0 5 (indicated by the left oblique line). The liquid crystal is composed of a portion (shown by a diagonal line) as a function of the azimuth polarizing element 506. Moreover, their respective functions are controlled in accordance with electrical signals supplied from the power source 511. In addition, the part serving as the function of the diffractive lens element # 505 is the function serving as the lens of the focal distance Π, and the part serving as the function of the azimuth polarizing optical element 506 has a polarization axis that polarizes incident linear polarization as compared to other parts. 90 degree rotation function. Also, as the function part of the azimuth polarizing optical element 506, the light unit of the condenser lens 507 is used as the center (please read the precautions on the back before filling this page) Γ-binding ·-f This paper size applies to Chinese national standards (CNS) A4 size (210 X 297 mm) Angry and jealousy contestants 1-Affordable printing A7 B7 5. Invention description (24). And it works in the circle 508 » Here, the description of the diffractive lens element will be made using the first one. Fig. 14 shows the diffraction of light by a general two-element, approximately transparent phase-type diffraction grid. For simplification, it is depicted as a sectional view projected on a plane. When the phase diffraction grating 1401 having a thickness d having a different refractive index between nl and η2 is repeated at a pitch ρ, when the laser light 1402 is incident, the emitted laser light 0 is diffracted due to the diffraction effect. Here, for simplification, the laser light 1402 is perpendicularly incident on the phase diffraction grating 1401. At this time, the 0th order light 1403, which is straight through in its original state, and diffracted in the 0 direction and the 0 direction, respectively, usually occur. 1st order light 1404 and 1st order light 1405 (higher-order diffracted light with larger diffraction angle will also occur, but its ratio is small and ignored), and at this time, the diffraction angle is given by sin (0) = λ / P is determined. Here, it is the wavelength of the laser light 1402 again. At this time, the area of the areas n1 and η2 of the laser light 1402 is approximately equal, and when the optical path length difference (n l-n2) Xd is again / 2, it is referred to as a Long 0 temple grid (grating). 〇 次 光 1403 will disappear and is known. In addition, when the optical path length difference (nl-n2) xd is long and the refractive index is changed from "to! ^ With continuity by repeating with the pitch ρ, it is called a blaze lattice (grating) and only It is known that the first light 1404 occurs. In fact, from ni to n2 ', it is changed in steps of 16 steps or more, that is, it can become an ideal shining grid, and it is also known and It is called a multi-level two-dimensional lattice (grating, and in general, a phase diffraction grating has a higher light utilization efficiency than an amplitude diffraction grating with opaque parts, which is more advantageous. As generally known, 'continuous To change the pitch of the diffraction grid, that is, it is possible that this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) (Please read the precautions on the back before filling this page)

r.裝 1 It i_i I— 1 a n n _· I 27 A7 B7 五、發明說明（25) 使其具有種種之透鏡效果，而其代表性者為菲涅爾透鏡（ 鏡頭）。 因此，依據第15圖說明使用液晶菲涅爾透鏡之繞射型 透鏡元件的動作原理。為簡單化，乃以截面圓描繪，惟， 實際上係以光轴1503作為旋轉軸之旋轉對稱形。在液晶菲 淫爾鏡頭1501有形成具有作為焦點距離fi之透鏡的機能之 ) 菲涅爾透鏡的圖案之透明電極，而對透明電極供與適當之 電壓就可使液晶菲涅爾透鏡1501有作為透鏡之機能。此時 ，該光學裝置之焦點距離就成為液晶菲涅爾透鏡15〇 1與聚 光透鏡1502之合成焦點距離，而雷射光1504就聚光在P2 點。又’不供與電壓之時，液晶菲涅爾透鏡15〇1不具有透 鏡之機能之故，該光學裝置的焦點距離就成為聚光透鏡 1502之焦點距離，而雷射光1504就聚光在P1點。因此， 於供與電壓於液晶菲涅爾透鏡1501之前後，就予改變該光 學裝置之焦點距離，即，開口數。 > 其次，對於在本發明第5實施例所採用之液晶空間光 調變元件504，使用第16圖（a)及（b)作說明。第16圖（a)及（b) 係描繪以電氣性作控制可能之液晶空間光調變元件504之 截面構造者》光軸近傍乃由90度旋轉向列型液晶元件1603 所構成，而光軸近傍以外即由同質性型液晶元件1602所構 成。對於其各自元素的機能乃與在本第2實施例上所說明 者為同樣。 ' 又，在單側之玻璃基板有輪帶狀之透明電極1610以相 異之節距予以形成。而在另一方之玻璃基板上，即，有透 本纸張尺度適用中國國家標準（CNS)A4規格（21〇 x 297公爱） -----------裝--- (請先閲讀背面之注意事f再填寫本頁) 訂·- f 經濟部智慧財產局員工消費合作社印製 28 Α7 Β7 絰濟部智慧財產局貝工消費合作社印製 五、發明說明（26) • 明電極蒸鍍在幾乎其整面。此時，於該液晶空間光調變元 件504有Y軸方向之直線偏光雷射光16〇4入射。 此時’如在第16圖（a)所示，對液晶空間光變調元件5〇4 未加電麼之時，對於直線偏光雷射光1604，其折射率同樣 為nl °因此’繞射不會產生乃使直線偏光16〇4以其原狀直 通而成為出射光1611 »但是，在光軸近傍，90度配向軸就 φ 被旋轉，由此乃如前述而產生超解像。但是，嚴格而言， 由透明電極1610會產生微小之超解像，但是，若使透明電 極1610之折射率與液晶元件之長轴方向的折射率為同樣， 即’因透明電極1610而生之繞射就不會產生。 其次，如在第16圖（b)所示，從電源1609對透明電極 1610加予充分之電壓，即，加電壓之部份的液晶元件乃依 Z轴方向之電場而成為同種型狀態。其結果，對於直線偏 光1604就成為以相異節距反覆折射率“與以之構造。因此 ，就與第14圖同樣，作為2元型相位型繞射格子之機能， ❿而發生0次光1605、1次光1606及-1次光l6〇h此時，若滿 足前述之隆寺光栅之條件，即，〇次光丨6〇5就不會產生。 又，若滿足前述之多準位2次光柵之條件，就僅不會產生1 -人光1606。但是，為多準位化’即’有必要將透明電極以 更細小之節距予以刻劃’並且，將電！以階段性予變化並 予加與。 其次’使用第17圖說明前述液晶空間光調變元件5〇4 之電極形狀。前述液晶空間光調變元件之電極具有以於中 央為圓心領域1701以及於其外周部將其中心有與圓心領域 (請先閱讀背面之注意事項再填寫本頁) 裝 1 n ----訂·1 ------i 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 29 A7r. Install 1 It i_i I— 1 a n n _ · I 27 A7 B7 V. Description of the invention (25) It has various lens effects, and its representative is Fresnel lens (lens). Therefore, the operation principle of a diffractive lens element using a liquid crystal Fresnel lens will be described with reference to Fig. 15. For the sake of simplicity, the cross-section is drawn, but in fact, it is a rotationally symmetric shape with the optical axis 1503 as the rotation axis. The liquid crystal Fresnel lens 1501 has the function of forming a lens having a focal distance fi.) The Fresnel lens has a patterned transparent electrode, and the liquid crystal Fresnel lens 1501 can be used as a transparent electrode by applying an appropriate voltage. Lens function. At this time, the focal distance of the optical device becomes the combined focal distance of the liquid crystal Fresnel lens 1501 and the condenser lens 1502, and the laser light 1504 is condensed at the point P2. When the voltage is not applied, because the liquid crystal Fresnel lens 1501 does not have the function of a lens, the focal distance of the optical device becomes the focal distance of the condenser lens 1502, and the laser light 1504 is condensed at P1. point. Therefore, after the voltage is applied before the liquid crystal Fresnel lens 1501, the focal distance of the optical device, that is, the number of openings, is changed. > Next, the liquid crystal spatial light modulation element 504 used in the fifth embodiment of the present invention will be described with reference to Figs. 16 (a) and (b). Figures 16 (a) and (b) depict the cross-section structure of the liquid crystal spatial light modulation element 504 which is electrically controllable. The optical axis is composed of a nematic liquid crystal element 1603 rotated by 90 degrees. The vicinity of the axis is composed of a homogeneous liquid crystal element 1602. The functions of the respective elements are the same as those described in the second embodiment. In addition, a transparent electrode 1610 having a belt shape is formed on a glass substrate on one side at different pitches. On the other side of the glass substrate, that is, the paper size is applicable to the Chinese National Standard (CNS) A4 specification (21〇x 297 public love) ----------- install --- ( Please read the note on the back f before filling out this page) Order ·-f Printed by the Consumers 'Cooperatives of the Intellectual Property Bureau of the Ministry of Economy 28 Α7 Β7 Printed by the Shellfish Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (26) • The bright electrode is evaporated on almost the entire surface. At this time, linearly polarized laser light 604 in the Y-axis direction is incident on the liquid crystal spatial light modulating element 504. At this time, "as shown in Fig. 16 (a), when the liquid crystal spatial light transducing element 504 is not powered up, the linearly polarized laser light 1604 has the same refractive index as nl °. The linearly polarized light 160 is generated as it is, and the light 1611 is emitted as it is. However, near the optical axis, the 90-degree alignment axis is rotated by φ, thereby generating a super-resolution as described above. However, strictly speaking, the transparent electrode 1610 produces a minute super-resolution, but if the refractive index of the transparent electrode 1610 is the same as the refractive index of the long axis direction of the liquid crystal element, that is, 'the transparent electrode 1610 was born Diffraction will not occur. Next, as shown in FIG. 16 (b), a sufficient voltage is applied to the transparent electrode 1610 from the power source 1609, that is, the liquid crystal element of the applied voltage portion becomes the same type state according to the electric field in the Z-axis direction. As a result, the linearly polarized light 1604 has a structure in which the refractive index is repeated at different pitches. Therefore, as in FIG. 14, as the function of the binary phase diffraction grating, 0 times of light is generated. 1605, 1st order light 1606, and -1st order light 160h. At this time, if the aforementioned conditions of the Longsi grating are satisfied, that is, 0th order light 605 will not be generated. Also, if the aforementioned multiple levels are met The condition of the second-order grating will only produce 1-human light 1606. However, for multi-levelization, that is, it is necessary to mark the transparent electrode with a finer pitch, and the electricity will be phased! Change and add. Secondly, the shape of the electrode of the aforementioned liquid crystal spatial light modulation element 504 will be described with reference to FIG. 17. The electrode of the aforementioned liquid crystal spatial light modulation element has a region 1701 centered on the center and a peripheral portion thereof. Place the center and the center of the circle (please read the precautions on the back before filling this page). 1 n ---- Order · 1 ------ i This paper size applies the Chinese National Standard (CNS) A4 specification ( 210 X 297 mm) 29 A7

五、發明說明（27 ) 1701為同樣之同心圓狀的多數之輪帶，所配置之輪帶領域 1702 ’而其分別連接於端子電極1703。但是，以模式性作 表示之故’輪帶之數僅予描繪4條，惟，實際上有數十至 數百條之輪帶。若介著端子電極1703而加與電氣信號之時 ’輪帶領域1702就作為繞射型透鏡之機能，同時，圓形領 域1701就消失方位偏光性。 再回歸第5圖，針對本發明第5實施例之動作作說明。 最初，繞射型透鏡元件505之機能停止，而方位偏光光學 元件506之機能為有效。此時，通過方位偏光光學元件5〇6 之直線偏光與通過繞射型元件505之直線偏光由於會相互 直交之故，乃會產生超解像。而此時，該光學裝置之開口 數乃由聚光透鏡507所決定。於實驗上，若進行約15%之 超解像’對於直線偏光雷射光503之光束的方位偏光光學 元件506之載面比率就成為約20%，而以該狀態使用於DVD 之讀寫。 該場合，依作為偏光選擇機構之直線偏光檢波元件510 ，且如在本發明之第2實施例所作之說明，超解像光點之 旁瓣輪就會被去除。又，在第5圈上，由於省略光檢出部 份，因此，乃將直線偏光檢波元件510配置在聚光透銳507 與液晶空間光調變元件504之間，惟，與本發明之第4實施 例之場合同樣，亦可配置在其他位置。 其次，使方位偏光光學元件506之機能為停止，而繞 射型透鏡元件505之機能為有效，且於此狀態下就不產生 超解像。又，此時，該光學裝置之焦點距離就成為繞射型 ^紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (靖先閲讀背面之注意事項再填寫本頁) 0_ 經濟部智慧財產局員工消費合作社印製V. Description of the Invention (27) 1701 is a wheel belt with the same concentric circle. The wheel belt is configured in the field 1702 'and is connected to the terminal electrodes 1703, respectively. However, the number of 'belts' expressed as a model is only four, but there are actually dozens to hundreds of rounds. When an electrical signal is applied through the terminal electrode 1703, the 'belt region 1702 functions as a diffractive lens, and at the same time, the circular region 1701 loses azimuth polarization. Returning to Fig. 5, the operation of the fifth embodiment of the present invention will be described. Initially, the function of the diffractive lens element 505 is stopped, and the function of the azimuth polarizing optical element 506 is effective. At this time, the linearly polarized light passing through the azimuth-polarized optical element 506 and the linearly polarized light passing through the diffractive element 505 are orthogonal to each other, and therefore, a super resolution is generated. At this time, the number of openings of the optical device is determined by the condenser lens 507. In the experiment, if about 15% of super resolution is performed, the loading ratio of the azimuth-polarized optical element 506 of the linearly polarized laser light 503 is about 20%, and this state is used for DVD read-write. In this case, the linearly polarized light detection element 510 serving as the polarization selecting mechanism is used, and as described in the second embodiment of the present invention, the side lobe wheel of the super-resolution light spot is removed. Also, on the fifth circle, the light detection portion is omitted. Therefore, the linearly polarized light detection element 510 is arranged between the light-concentrating sharp 507 and the liquid crystal spatial light modulation element 504. However, it is the same as the first aspect of the present invention. In the case of the fourth embodiment, it can also be arranged at other positions. Next, the function of the azimuth polarizing optical element 506 is stopped, and the function of the diffractive lens element 505 is effective, and in this state, no super resolution is generated. At this time, the focal distance of the optical device becomes diffractive. ^ The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Jing first read the precautions on the back before filling out this page) 0_ Economy Printed by the Ministry of Intellectual Property Bureau's Consumer Cooperative

--裝 • ·1« n n n a 1« n ϋ n n I 30 -=y...... 經濟邨智慧財產局員工消费合作社印製 A7 ______ B7_____ 五、發明說明（28 ) • 光學元件506與聚光透鏡507之合成焦點距離，而其與僅為 聚光透鏡507之場合相比較，乃成為改變開口數^此事以 另一解釋，即，將以聚光透鏡507予以讀取CD之時所發生 之球面像差，能視為以繞射型透鏡元件得予修正，並將此 狀態使用於CD之讀取。 以嚴格而言，由於繞射型透鏡元件505之中心部份為 φ 方位偏光光學元件506之故，其作為透鏡之作用幾乎為無 。但是’於DVD與CD之開口數切換上所必要之繞射型透 鏡元件的焦點距離由於從數十mm至數百mm，是故，於原 來，中心附近就不甚有必要其作為透鏡之作用。其若依先 前之別一解釋’即，於CD之讀取時所生之球面像差係比 例於透鏡口徑之3次方，惟，中心附近就無多大之影響。 更如前述’欲予進行約15%之超解像之場合，方位偏光光 學元件506於中心附近所佔之截面比率約為2〇〇/0之故，乃 無多大之影響》 Φ 於前述之說明可明瞭，由於控制繞射型透鏡元件505 之機能與方位偏光光學元件506之機能，就可切換光學裝 置之實效性的開口數，而雷射之有效波長之切換乃成為可 行。又’將繞射型透鏡元件505予以動作之狀態下可設定 為DVD之讀寫用的開口數，惟，此場合，若不提高繞射 型透鏡元件之效率，即，需要對DVD作寫入之場合，光 能就不足。 又’在本發明之第5實施例上，係將繞射型透鏡元件505 之機能與方位偏光光學元件506之機能同時予以產生，但 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) 裝 ^1 n 11 ϋ B^i 訂-----------Equipment • · 1 «nnna 1« n ϋ nn I 30-= y ...... Printed by A7 ______ B7_____ of the Consumer Cooperatives of the Intellectual Property Bureau of the Economic Village V. Description of the invention (28) • Optical element 506 and poly The combined focal distance of the optical lens 507 is compared with the case where the condenser lens 507 is only used to change the number of openings ^ This matter is explained in another way, that is, when the CD is read by the condenser lens 507 The generated spherical aberration can be regarded as being corrected by a diffractive lens element, and this state is used for reading a CD. Strictly speaking, since the center portion of the diffractive lens element 505 is a φ-azimuth polarized optical element 506, its role as a lens is almost non-existent. However, the focal distance of the diffractive lens element necessary for switching between the number of openings of a DVD and a CD is from several tens mm to several hundred mm. Therefore, it is not necessary to use it as a lens in the vicinity of the center. . According to the previous interpretation, that is, the spherical aberration generated when the CD is read is proportional to the third power of the lens aperture, but there is not much influence near the center. As in the case of the above-mentioned '15% super-resolution, the cross-section ratio of the azimuthally polarized optical element 506 near the center is about 200/0, which has little effect. 'Φ In the foregoing The explanation is clear, since the function of the diffractive lens element 505 and the function of the azimuth polarizing optical element 506 can be controlled, the number of effective openings of the optical device can be switched, and the switching of the effective wavelength of the laser becomes feasible. It is also possible to set the number of openings for DVD reading and writing when the diffraction lens element 505 is operated. However, in this case, if the efficiency of the diffraction lens element is not improved, that is, writing to the DVD is required. In this case, light energy is insufficient. Also, in the fifth embodiment of the present invention, the function of the diffractive lens element 505 and the function of the azimuth polarized optical element 506 are generated at the same time, but this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the notes on the back before filling out this page) Pack ^ 1 n 11 ϋ B ^ i Order ---------

31 i、發明說明（29 )31 i. Description of the invention (29)

CC

C A7 B7 經濟部智慧財產局具工消費合作社印製 ，以電氣性作控制而使其各別產生亦有可行。 例如’使用780nm波長之半導體雷射光源，並使用眾 所知之DVD用拾音器透鏡，而僅使方位偏光光學元件506 之機能予以產生且依超解像光點進行DVD之讀取。又， 使用同一光源及同一拾音器用透鏡，而僅使繞射型透鏡元 件505之機能產生，以修正DVD用之拾音器透銳的球面像 差’就有可能進行CD或CD-R之讀取或寫入。 特別是，於本發明之第3〜第5實施例上，針對本發明 應用在光碟之拾音器用的場合作記述，但，本發明對其他 之，例如，能應用在測定機器、記錄用機器、功率雷射應 用之機器等各種機器，乃不必多言。 而在上述之第1〜第5實施例上，乃依偏光選擇機構予 以去除旁瓣輪之方法或裝置作敘述β但是，依同樣之方法 及裝置能予去除旁瓣輪之成份。旁瓣輪之成份係指光點之 旁瓣輪反射於光碟之凹坑或傷滾等（因散亂或繞射等）而使 旁瓣輪之山峯崩溃且使其一部份含有在主瓣輪中之意。如 前述，旁辦輪之成份亦與旁瓣輪同樣，由於具有與主瓣輪 之方位為相異之方位，因此，依同樣之偏光選擇機構亦能 予去除。 從前述之說明可明瞭，在使用依據本發明之偏光選擇 機構的方位偏光光學元件之光學裝置上，以簡單之構成就 能予去除超解像特有之旁瓣輪或其成份。即，不只是針對 旁瓣輪或其成份為重點之光點，而能予實現可完全去除的 無旁瓣輪之超解像。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） (請先閲讀背面之注意事項再填寫本頁) 裝 幻· 32 A7C A7 B7 Printed by the Industrial and Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. It is also feasible to use electrical control to make them individually. For example, a semiconductor laser light source with a wavelength of 780 nm is used, and a well-known pickup lens for a DVD is used, and only the function of the azimuth polarizing optical element 506 is generated and the DVD is read based on the super-resolution light spot. In addition, using the same light source and the same lens for the pickup, only the function of the diffractive lens element 505 can be generated to correct the sharp spherical aberration of the DVD pickup. It is possible to read or read CD or CD-R. Write. In particular, in the third to fifth embodiments of the present invention, the field cooperation for the pickup of the optical disc is described, but the present invention can be applied to, for example, measurement equipment, recording equipment, Needless to say, various machines such as power laser applications. In the first to fifth embodiments described above, the method or device for removing the sidelobe wheel according to the polarization selecting mechanism is described. However, the component and the sidelobe wheel can be removed by the same method and device. The component of the sidelobe wheel means that the sidelobe wheel of the light spot is reflected by the pits or rolls of the disc (due to scattering or diffraction, etc.), causing the peaks of the sidelobe wheel to collapse and containing a part of it in the main lobe Meaning in the round. As mentioned above, the components of the side lobe wheel are also the same as the side lobe wheel, because they have a different orientation from the main lobe wheel. Therefore, the same polarization selection mechanism can be removed. As is clear from the foregoing description, the optical device using the azimuth-polarizing optical element of the polarization selecting mechanism according to the present invention can remove the side lobe wheel or its components peculiar to super resolution with a simple structure. In other words, it is possible not only to focus on the side lobe or its components, but also to achieve a super-resolution without side lobe that can be completely removed. This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 public love) (Please read the precautions on the back before filling this page) Installation Magic 32 A7

五、發明說明（30) 又，在本發明之液晶元件比現在之具有複雜構造的個 人電腦用等之液晶顯示盤，其尺寸亦小且為非常簡單之構 造之故，乃不會成為有特別大之成本増加◎又，偏光選擇 機構亦可將在市面上所販售之液晶裝置所使用㈣價之產 品直接使用為可行。而與如在習知技藝上，於聚光光點位 置***僅予遮光聚光光點之旁瓣輪之縫隙的方法相比較， φ 其位置對準亦非常簡單。 將本發明應用於光碟之拾音器光學裝置的場合，乃不 一定應將直線偏光檢波元件設置在方位偏光光學元件之正 後方。此場合，將其設置在光信號檢出器之正前面就可以 。其結果，由於在光碟上之光點所聚光的途中無必要予以 設置直線偏光檢波元件，因此，有光利用效率較高之優點 0 又，在本發明上，以電氣信號就可簡單切換為超解像 與正常解像，因此，其比習知之必要有78011111與65011111之2 0只雷射的DVD-CD兼用之光拾音器而言，乃以78〇nm之雷 射1只就能作DVD-CD兼用之讀取等的處理。 又，依據本發明進行超解像，其比以單純性提高開口 率而獲得同樣光點之場合，由於從其焦點深度能提升1〇〜 20%之事實，其亦有光拾音器之自動對焦的伺服界限可提 高之優點。而其比以單純性提高開口率，亦能予抑制彗星 像差之發生的優點。 又，雷射光源變成如何之短波長，或透鏡（鏡頭）之開 口率（NA)變成如何之大，若使用依據本發明之超解像， 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） (請先閲讀背面之注意事項再填寫本頁) _r+. 裝 ----訂i -------^τ. 33 A7 B7 五、發明說明（31) 即’在如是之光學裝置上就不必在意於旁瓣輪，且能將光 點徑再予細小約20%，並且，因應必要可將超解像與正常 解像，無可動部而以電氣性簡單予以切換之優點。 又’依據本發明之旁瓣輪的去除方法及裝置，該因散 亂或繞射等之原因而使旁瓣輪之山峯崩潰，且其一部份雖 進入主辦輪，亦有能予去除如是之旁瓣輪的優點。 f^) 圖面之簡單說明： 第1圖為本發明之第1實施例上的光學裝置之構成例。 第2圖為本發明之第2實施例上的光學裝置之構成例。 第3圖為本發明之第3實施例上的光學裝置之構成例。 第4圖為本發明之第4實施例上的光學裝置之構成例。 第5圖為本發明之第5實施例上的光學裝置之構成例》 第6圖為超解像光裝置之原理說明圖》 第7圖為說明依超解像光裝置所作成之光點。 第8圖為說明依本發明之光學裝置所作成之光點。 ν ^ 第9圖為說明依本發明之光學裝置所作成之光點的強 度。 第10圖係表示本發明所超解像之光點的偏光狀態。 第11圖係表示於本發明所採用之液晶的作用。 第12圊係表示使用液晶元件之方位偏光光學元件的構 成。 第13圖係表示一般性之液晶的特性之圊表。 第14圖係說明依2元型相位型繞射型繞射格子（光柵） 之光的繞射現象》 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公笼） (請先閱讀背面之注意事項再填寫本頁) 裝 f. 經濟部1r慧財產局貝工消费合作社印製 34 經濟部智慧財產局員工消費合作社印製 • A7 _B75五、發明說明（32 ) 第15圖係說明使用液晶菲湟爾透鏡（鏡頭）之可變焦點 * . 光學裝置的原理。 ^ 第16圖係表示在本發明所採用之液晶空間光調變元件 的基本性截面構成。 第17圖係表示在本發明所採用之液晶空間光調變元件 ‘ 的透明電極形狀。V. Description of the invention (30) In addition, the liquid crystal element of the present invention has a smaller size and a very simple structure than a conventional liquid crystal display panel for personal computers and the like having a complicated structure. Large cost increase ◎ Moreover, the polarizing selection mechanism can also directly use the expensive products used in liquid crystal devices sold on the market as feasible. Compared with the method of inserting the gap of the side lobe wheel of the light-shielding light spot only at the spot of the light spot, as in the conventional technique, the position alignment of φ is also very simple. When the present invention is applied to a pickup optical device of an optical disc, the linearly polarized detection element should not necessarily be disposed directly behind the azimuthally polarized optical element. In this case, it can be set in front of the optical signal detector. As a result, it is not necessary to provide a linearly polarized light detection element in the middle of the light spot condensed on the optical disc. Therefore, there is an advantage of high light utilization efficiency. In the present invention, the electrical signal can be simply switched to Super resolution and normal resolution. Therefore, it is necessary to have 20 laser DVD-CD dual-use optical pickups, 78011111 and 65011111, which can be used as a DVD with 78nm laser. -CD is used for processing such as reading. In addition, when performing super-resolution according to the present invention, compared with the case where the same light spot is obtained by simply increasing the aperture ratio, due to the fact that the depth of focus can be increased by 10-20%, it also has the autofocus of an optical pickup. The advantage of increased servo limit. And its ratio simply increases the aperture ratio, and can also suppress the occurrence of comet aberrations. In addition, how short the laser light source becomes, or how large the aperture ratio (NA) of the lens (lens) becomes, if the super-resolution according to the present invention is used, this paper size applies the Chinese National Standard (CNS) A4 specification ( 210 X 297 public love) (Please read the precautions on the back before filling this page) _r +. Binding ---- Order i ------- ^ τ. 33 A7 B7 V. Description of the invention (31) That is' In such an optical device, there is no need to pay attention to the side lobe wheel, and the light spot diameter can be further reduced by about 20%, and, if necessary, the super resolution and the normal resolution can be used, and the moving part is simply and electrically provided. Advantages of switching. According to the method and device for removing the side lobe wheel according to the present invention, the peak of the side lobe wheel collapses due to scattering or diffraction, etc., and although a part of it enters the host round, it can be removed. Advantages of the side lobe wheel. f ^) Brief description of drawings: FIG. 1 is a configuration example of an optical device according to the first embodiment of the present invention. Fig. 2 is a configuration example of an optical device according to a second embodiment of the present invention. Fig. 3 is a configuration example of an optical device according to a third embodiment of the present invention. Fig. 4 is a configuration example of an optical device according to a fourth embodiment of the present invention. Fig. 5 is a configuration example of an optical device according to a fifth embodiment of the present invention. "Fig. 6 is a diagram for explaining the principle of a super-resolution optical device." Fig. 7 is a diagram illustrating light points made by the super-resolution optical device. FIG. 8 is a diagram illustrating a light spot made by the optical device of the present invention. ν ^ Figure 9 illustrates the intensity of a light spot made by the optical device of the present invention. Fig. 10 shows the polarization state of the light spot of the super resolution of the present invention. Fig. 11 shows the effect of the liquid crystal used in the present invention. The twelfth series is a configuration of an azimuthally polarized optical element using a liquid crystal element. FIG. 13 is a table showing characteristics of a general liquid crystal. Figure 14 illustrates the diffraction of light by a two-element phase diffraction diffraction grating (grating) "This paper size is applicable to China National Standard (CNS) A4 (210 X 297 male cage) (Please read first Note on the back, please fill in this page again) Installation f. Printed by 1r Hui Property Bureau, Ministry of Economic Affairs, Printed by Shellfish Consumer Cooperatives 34 Printed by Employees' Cooperatives of Intellectual Property Bureau, Ministry of Economic Affairs • A7 _B75 V. Description of Inventions (32) Figure 15 illustrates Variable focus using LCD Phillips lens (lens) *. Principles of optical devices. ^ Figure 16 shows the basic cross-sectional structure of a liquid crystal spatial light modulation element used in the present invention. FIG. 17 shows the shape of a transparent electrode of a liquid crystal spatial light modulation element ′ used in the present invention.

本紙張尺度適用+國國家標準（CNS)A4規格（2〗0 X 297公釐） 35 (請先閱讀背面之注意事項再填寫本頁) ΓΙ > n It ·*--口，I n t— Bn i I I · A7 B7 五、發明說明（33 元件標號對照 經濟部智慧財產局貝工消费合作社印製 101，201，301，401...光軸 504,601，1503 …光轴 102.202.302.402.. .直線偏光 103.203.303.403.506.. .方 位偏光光學元件 104,204,304,404·.·方位偏 光光學元件之中央部 105.206.305.406.604.. .有 效光束 106.207.507.603.1502.. . 聚光透鏡(銳頭） 107,208,311,412,510·..偏 光選擇機構（直線偏光檢 波元件） 204，1201，1603...90度旋轉 向列型液晶元件 205，1202，1602…同質性型 液晶元件 306,408…第1聚光透鏡 307,409·..光碟 308,407…光分離元件 309,410…第2聚光透鏡 310,411…光信號檢出元件 501…直線偏光雷射光源 502…準直光(平行光)透鏡 503,1604…直線偏光雷射光 5 04…液晶空間光調變元件 505…繞射型透鏡元件 508,1701…圓形領域 511，413，1106，1609...電源 602…遮蔽屏罩 701，702,703,802...光點 803,901，902…超解像光點 903…去除旁瓣輪905之波形 901…光點強度(有效光束整體) 902…光點強度（p點） 904.. .主瓣輪 1001.1002.. .偏光向量 1003a，1003b".合力向量 1004.. .偏光向量 1101…玻璃基板 1102…液晶分子 1103···液晶之配向轴 1104…入射直線偏光 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公麓） 36 A7 B7 五、發明說明（34 r 1105.. .出射直線偏光 1203.. .電極 1401…相位型繞射格子(光栅） 1402.1504.. .雷射光 1403.1605.. .0.次光 1404.1606.. .1.光 1405.1607.. .-1 次光 1501.. .液晶菲捏‘爾透鏡 1610.. .透明電極 1611.. .出射光 1702.. .輪帶領域 1703…端子電極 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 χ 297公釐） · 37The size of this paper is applicable to the national standard (CNS) A4 specification (2〗 0 X 297 mm) 35 (Please read the precautions on the back before filling in this page) ΓΙ > n It ** 口, I nt— Bn i II · A7 B7 V. Description of the invention (33 The component numbers are printed with reference to 101, 201, 301, 401, and the optical axis 504, 601, 1503… optical axis 102.202.302.402 ... Linear polarized light 103.203.303.403.506 ... Azimuth polarized optical element 104,204,304,404 ... Central part of azimuth polarized optical element 105.206.305.406.604 .. Effective beam 106.207.507.603.1502 .. Condensing lens (sharp head) 107,208,311,412,510 ... Polarization selection mechanism (linear polarized light detection element) 204, 1201, 1603 ... 90-degree rotating nematic liquid crystal element 205, 1202, 1602 ... homogeneous liquid crystal element 306, 408 ... first condenser lens 307, 409 ... Optical discs 308,407 ... light separating elements 309,410 ... second condenser lenses 310,411 ... optical signal detection elements 501 ... linearly polarized laser light source 502 ... collimated (parallel) lens 503,1604 ... linearly polarized laser light 5 04 ... LCD Spatial light modulation element 505 ... Diffraction lens element 508,1701 ... Circular area 511,413,1106,1609 ... Power source 602 ... Shielding mask 701,702,703,802 ... Light spot 803,901,902 ... Super-resolution light spot 903 ... Side lobe wheel 905 Waveform 901… point intensity (whole beam) 902… point intensity (point p) 904 .. main lobe wheel 1001.1002 .. polarizing vector 1003a, 1003b ". resultant force vector 1001 ... glass Substrate 1102 ... Liquid crystal molecules 1103 ... Alignment axis 1104 of liquid crystal ... Incident linear polarized light This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 feet) 36 A7 B7 V. Description of the invention (34 r 1105 .. .Exit linearly polarized light 1203 .. Electrode 1401 ... Phase diffraction grating (grating) 1402.1504 .. .Laser light 1403.1605 ... 0. Secondary light 1404.1606 .. .1. Light 1405.1607 ...- 1 Secondary light 1501. .. LCD Phillips lens 1610 .. .Transparent electrode 1611.. .Exit light 1702... Belt area 1703 .. Terminal electrode (please read the precautions on the back before filling this page). The paper size printed by the consumer cooperative is applicable to China National Standard (CNS) A4 (210 χ 297 mm) · 37

Claims (1)

058899 ABCD 經濟部智慧財產局員工消费合作社印製058899 Printed by ABCD Employee Consumer Cooperatives, Ministry of Economic Affairs 申請專利範圍 1· 一種光學裝置，其係具有入射光產生機構及聚光入射 光之用的透鏡系統，並將該入射光之一部份作調變予 以產生含有主瓣輪及旁瓣輪之超解像的裝置，其構成 特徵’在於包含有： 偏光向量調變機構’係將前述旁瓣輪之偏光向量 以及前述年瓣輪之偏光向量，可使其為相異之偏光選 擇；及 偏光選擇機構，係由於選擇前述主瓣輪之偏光向 量而予去除前述旁瓣輪。 2.如申請專利範圍第1項所記載之光學裝置，其中： 前述偏光向量調變機構，係可使前述主瓣輪之偏 光面與旁瓣輪之偏光面具有相異之機能。 3_如申請專利範圍第2項所記載之光學裝置，其中： 前述變更向量調變機構，係具有使前述旁瓣輪作 為直線變更為機能。 4. 如申請專利範面第3項所記載之光學裝置，其中： 前述變更向量調變機構，係具有使前述主瓣輪作 為直線偏光之機能。 5. 如申請專利範圍第1項所記載之光學裝置，其中： 前述入射光產生機構係直線偏光產生機構；及 前述偏光向量調變機構’係產生將前述直線偏光 變換為主瓣輪及與該主瓣輪具有相異之偏光向量的旁 辦輪之光束之用的方位偏光光學元件。 6·如申請專利範圍第5項所記載之光學裝置，其令： 頁 訂 (CNS)A娜⑵Q χ 挪公爱） 38 六、申請專利範圍 * 、别述方位偏光光學元件，係將前述直線偏光變換 為相直交之2種直線偏光之元件。 7. 如申請專利範圍第5項所記載之光學裝置，其中： 欲予產生前述直線偏光之機構，係半導體雷射元 件。 8. 如申請專利範圍第5項所記載之光學裝置，其中： f! 前述直線偏光，係干涉光。 9. 如申请專利範圍第5項所記載之光學裝置，其中： 則述方位偏光光學元件，係於所入射之前述直線 偏光之有效光束内，對於前述直線偏光大致不具有相 位分佈。 10·如申請專利範圍第5項所記載之光學裝置，其中，前述 方位偏光光學元件，再具有： 第1機能部份；及 第2機能部份； " 而該第1機能部份與第2機能部份，係具有相異之 方位偏光特性。 11.如申請專利範圍第5項所記載之光學裝置，其中： 係’使前述第1機能部份及第2機能部份之方位偏光 特性大約予以相異90度β I2·如申請專利範圍第5項所記載之光學裝置，其中： 前述第1機能部份，係含有光轴近傍；及 份。前述第2機能部份，係含有能部份之部 本紙張尺度剌中國國家鮮（(^JS)A4規格（i 297公釐） A8 B8 C8 D8 六、申請專利範圍 13. 如申請專利範圍第1〇項所記載之光學裝置，其中： 前述第1機能部份，係具有同質性配巧之辱域；及 前述第2機能部份，係具有90度旋轉向列配向之領 域。 意 14. 如申請專利範圍第5項所記載之光學裝置，其中，前述 方位偏光光學元件之構成尚含有： 卜 90度旋轉向列型液晶元件，係具有與前述直線偏 光之偏光軸大約為一致或相直交之液晶分子之配向軸 :及 同質性型液晶元件。 15_如申請專利範圍第14項所記載之光學裝置，其中： 訂 前述90度旋轉向列型液晶元件，係配置在前述直 線偏光之光軸近傍部份》 16.如申請專利範圍第15項所記載之光學裝置，其中·· h 前述光軸近傍部份乃大約為圓形或大約為長方形 17·如申請專利範圍第14項所記載之光學裝置，其十： 前述同質性型液晶元件，係配置在前述直線偏光 之光軸近傍部份》 18·如申請專利範圍第17項所記載之光學裝置，其中： 前述光軸近傍部份，係大約為圓形或大約為長方 形。 19.如申請專利範圍第5項所記載之光學裝置，其中： 前述偏光選擇機構’係以入射於前述方位偏光光 I紙張尺度適財_家標準（CNS)A4規格⑵〇 X 297公爱)" 40 A8 § N i\ 經濟部智慧財產局員工消費合作社印製 ---------08 _______ 申請專利範圍 (請先閱讀背面之注意事項再填寫本頁) 學元件之前述直線偏光之方位作為基準，並使前述方 位偏光光學元件配置為將前述直線偏光向著作9〇度方 位偏光之方向，具有〇度以上90度以下之範圍的方位。 20. 如申請專利範圍第5項所記載之光學裝置，其中： 係其再具有聚光前束光束之用的聚光透鏡（鏡頭） 〇 21. 如申請專利範圍第5項所記載之光學裝置，其中： 則述主瓣輪為直線偏光而且前述旁瓣輪乃與前述 主為方位相異之直線偏光。 22. 如申請專利範圍第5項所記載之光學裝置，其中： 前述偏光選擇機構，係直線偏光濾光器。 23·—種光學裝置，其構成特徵在於包含有： 直線偏光產生機構； 方位偏光光學元件，係將前述直偏光予以變換為 主瓣輪以及產生該主瓣輪具有相異方位之旁瓣輪之光 束之用； 第1聚光透鏡（鏡頭），係將前述光束予以聚光在光 碟上之用； 光檢出元件’係欲檢出前述光碟之資訊之用； 第2聚光透鏡（鏡頭），係將從前述光碟之反射光束 予以聚光在前述光檢出元件之用；及 偏光選擇機構，係從前述光束僅予去除前述旁瓣 輪之用。 24.如申請專利範圍第23項所記載之光學裝置，其中： 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 41 0ΛΟ088 ARCD 六、申請專利範圍 前述直線偏光產生機構，係半導體雷射元件。 25·如申請專利範圍第23項所記載之光學裝置，其十： 前述直線偏光為干涉光》 26.如申請專利範圍第23項所記載之光學裝置，其中： 前述方位偏光光學元件，於所入射之前述直線偏 光的有效光東内’對梦前述直線偏光大約不具有相位 分佈。 r- 經濟部智慧財產局具Η消費合作社印製 27. 如申請專利範圍第23項所記載之光學裝置，其中： 前述方位偏光光學元件，對於所入射之前述直線 偏光的光轴近傍或僅對於光轴近傍以外有其機能。 28. 如申請專利範圍第27項所記載之光學裝置，其中，前 述方位偏光光學元件’其在構成上再具有： 90度旋轉向列型液晶元件，係具有與前述直線偏 光之偏光軸大約為一致或為相直交之液晶分子之配向 軸；及 同質性型液晶元件。 29. 如申請專利範圍第28項所記載之光學裝置，其中： 前述90度旋轉向列型液晶元件，係配置在前述直 線偏光之光軸近傍部份》 30. 如申請專利範圍第27項所記載之光學裝置，其中： 前述光軸近傍部份，係大約為圓形或大約為長方 形。 31. 如申請專利範圍第28項所記載之光學裝置，其中.· 前述同質性型液晶元件，係配置在前述直線偏光 晴鮮（CN$M 規格（21〇 x 297公釐〉 (請先閲讀背面之注意事 <填寫本頁) 裝 42 六 、申請專利範圍 之光軸近傍部份。 .如申請專利範圍第31項所記載之光學裝置，其中： 前述光軸近傍部份’係大約為圓形或大約為長方 形。 33·如申請專利範圍第23項所記載之光學裝置，其中： m 前述偏光選擇裝置，係將入射於前述方位偏光光 學元件之前述直線偏光的方位作為基準，並使前述方 位偏光光學元件配置為將前述直線偏光向著作9〇度方 位偏光之方位，具有〇度以上而9〇度以下之範圍的方位 34·如申請專利範圍第23項所記載之光學裝置，其中： 前述偏光選擇裝置，係再具有將前述光束予以聚 光之用的聚光邊鏡（鏡頭）。 35·如申請專利範圍第23項所記載之光學裝置，其中： 月’J述主瓣輪為直線偏光，而且，前述旁瓣輪乃與 前述主瓣輪為方位相異之直線偏光。 36·如申請專利範圍第23項所記載之光學裝置，其中： 前述偏光選擇機構，係直線偏光濾光器。 37. 如申請專利範圍第23項所記載之光學裝置，其中·‘ 前述方位偏光光學元件，係能以電氣性使方位偏 光機能予以產生或予停止。 38, 如申請專利範圍第37項所記載之光學裝置，其中· 欲使前述方位偏光光學元件之方位偏光機能予以 產生之％合’及欲使前述方位偏光光學元件之方位偏 43 A8 B8 C8 D8 六、申請專利範圍 光機能予以停止之場合，其係將前述光束分别予以聚 光在相異種類之光碟上。 39·如申請專利範圍第38項所記載之光學裝置，其中： 前述相異種類之光碟為DVD與CD。 40.如申請專利範圍第38項所記載之光學裝置，其中： 前述相異種類之光碟為DVD舆CD-R。 C： " 41·一種光學裝置，其構成特徵在於包含有： 直線偏光產生機構； 繞射型透鏡元件，係依電氣信號而能使繞射機能 予以產生或予停止。 方位偏光光學元件，係將前述直線偏光予以變換 為主瓣輪及具有與前述主瓣輪為相異方位之旁辦輪的 光束； 聚光透鏡（鏡頭），係將前述光束予以聚光在光碟 上之用；及 ' 偏光選擇機構’係從前述光束僅為去除前述旁瓣 輪之用β 42.如申請專利範圍第41項所記載之光學裝置，其中： 當前述繞射型透鏡元件以繞射機能為有效之場合 的光學裝置之焦點距離，乃成為前述繞射型透鏡元件 及前述聚光透銳之合成焦點距離； 當前述繞射透鏡元件以繞射機能為停止之場合的 光學裝置之焦點距離，就成為僅為前述聚光透鏡之焦 點距離。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐) ' (請先閲讀背面之注意事^<填寫本頁) •裝 - 經濟部智慧財產局貝工消費合作社印製 -44 -Patent application scope 1. An optical device having an incident light generating mechanism and a lens system for condensing incident light, and modulating a part of the incident light to produce a main lobe wheel and a side lobe wheel The super-resolution device is characterized in that it includes: a polarization vector modulation mechanism that converts the polarization vector of the aforementioned side lobe wheel and the polarization vector of the aforementioned annual lobe wheel into different polarized light options; and polarized light The selection mechanism is to remove the side lobe because the polarization vector of the main lobe is selected. 2. The optical device according to item 1 in the scope of the patent application, wherein: the polarization vector modulation mechanism is capable of making the polarizing surface of the main lobe wheel and the polarizing surface of the side lobe wheel have different functions. 3_ The optical device according to item 2 of the scope of patent application, wherein: the change vector modulation mechanism is provided with a function of changing the side lobe wheel as a straight line. 4. The optical device described in item 3 of the patent application, wherein: the change vector modulation mechanism has a function of causing the main lobe wheel to be linearly polarized. 5. The optical device as described in item 1 of the scope of patent application, wherein: the aforementioned incident light generating mechanism is a linearly polarized light generating mechanism; and the aforementioned polarized light vector modulation mechanism is configured to convert the linearly polarized light into a main lobe wheel and the same The main lobe wheel has an azimuth polarizing optical element for the side beam of the side wheel with a different polarization vector. 6. The optical device as described in item 5 of the scope of patent application, the order is: Page order (CNS) A Na⑵Q χ 公 Norwegian love) 38 6. Scope of patent application *, other azimuth polarizing optical elements, the straight line Polarized light is converted into two types of linearly polarized light that intersect at right angles. 7. The optical device according to item 5 of the scope of the patent application, wherein: the mechanism to generate the aforementioned linearly polarized light is a semiconductor laser element. 8. The optical device as described in item 5 of the scope of patent application, wherein: f! The aforementioned linearly polarized light is interference light. 9. The optical device according to item 5 of the scope of the patent application, wherein: the azimuth-polarized optical element is within an effective beam of the aforementioned linearly polarized light and has substantially no phase distribution for the aforementioned linearly polarized light. 10. The optical device described in item 5 of the scope of the patent application, wherein the azimuth-polarizing optical element further has: a first functional portion; and a second functional portion; " and the first functional portion and the first functional portion 2 The function part has different azimuth polarization characteristics. 11. The optical device as described in item 5 of the scope of patent application, wherein: The azimuth polarization characteristics of the aforementioned first and second functional portions are approximately different by 90 degrees β I2. The optical device according to item 5, wherein: the aforementioned first functional part includes a near optical axis; and The aforementioned second functional part refers to the paper size of the part containing the functional part 剌 Chinese national fresh ((^ JS) A4 size (i 297 mm) A8 B8 C8 D8 6. Application scope 13. The optical device according to item 10, wherein: the first functional part is a field of disgrace with homogeneous matching; and the second functional part is a field having a 90-degree rotating nematic alignment. Italian 14. The optical device described in item 5 of the scope of the patent application, wherein the composition of the aforementioned azimuthally polarized optical element further includes: 90 ° rotated nematic liquid crystal element, which has approximately the same or orthogonal intersection with the polarization axis of the aforementioned linearly polarized light The alignment axis of the liquid crystal molecules: and the homogeneous liquid crystal element. 15_ The optical device described in item 14 of the scope of patent application, wherein: the aforementioned 90-degree rotating nematic liquid crystal element is arranged in the aforementioned linearly polarized light The near-axis part "16. The optical device described in item 15 of the scope of the patent application, in which the near-axis part of the aforementioned optical axis is approximately circular or approximately rectangular. 17 The optical device according to item 14 of the scope of benefit, ten: The aforementioned homogeneous liquid crystal element is arranged near the optical axis of the aforementioned linearly polarized light. 18. The optical device according to item 17 of the scope of patent application, wherein The near part of the aforementioned optical axis is approximately circular or approximately rectangular. 19. The optical device described in item 5 of the scope of the patent application, wherein: the aforementioned polarization selecting mechanism 'is incident on the aforementioned azimuth polarized light I paper Standards for Finance _Home Standard (CNS) A4 Specification (⑵〇 297 公 爱) " 40 A8 § N i \ Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs --------- 08 _______ Scope of Patent Application (Please read the precautions on the back before filling this page) The orientation of the aforementioned linearly polarized light of the learning element is used as a reference, and the aforementioned azimuthally polarized optical element is configured to direct the aforementioned linearly polarized light to the direction of the 90-degree azimuthal polarization of the work, with 0 Above the range of 90 degrees or less. 20. The optical device described in item 5 of the scope of patent application, wherein: it is further provided with a condenser lens (lens) for condensing the front beam. 21. The optical device described in item 5 of the scope of patent application. Among them, the main lobe wheel is linearly polarized, and the side lobe wheel is linearly polarized light having a different orientation from the main lobe. 22. The optical device according to item 5 of the scope of patent application, wherein: the aforementioned polarization selecting mechanism is a linear polarizing filter. 23 · An optical device, which is characterized by comprising: a linearly polarized light generating mechanism; an azimuthally polarized optical element that converts the aforementioned straightly polarized light into a main lobe wheel and generates a side lobe wheel with a different orientation of the main lobe wheel For light beam; The first condenser lens (lens) is used for condensing the aforementioned light beam on the optical disc; the light detecting element is used for detecting the information of the aforementioned optical disc; the second condenser lens (lens) Is used for condensing the reflected light beam from the aforementioned optical disc on the aforementioned light detection element; and a polarization selecting mechanism is used for removing only the aforementioned side lobe wheel from the aforementioned beam. 24. The optical device as described in item 23 of the scope of patent application, wherein: This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 41 0ΛΟ088 ARCD 6. The aforementioned linear polarized light generating mechanism of the scope of patent application, Department of semiconductor laser components. 25. The optical device described in item 23 of the scope of patent application, which is ten: The aforementioned linearly polarized light is interference light. 26. The optical device described in item 23 of the scope of patent application, wherein: The incident effective light of the aforementioned linearly polarized light is not substantially phase-distributed to the aforementioned linearly polarized light. r- Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and printed by a consumer cooperative. 27. The optical device described in item 23 of the scope of patent application, wherein: the aforementioned azimuth polarized optical element is near or near the optical axis of the incident linear polarized light Beyond the optical axis, it has its function. 28. The optical device according to item 27 in the scope of the patent application, wherein the azimuth-polarizing optical element 'is further composed of: a 90-degree rotating nematic liquid crystal element having a polarization axis approximately equal to that of the linearly polarized light. Alignment axes of liquid crystal molecules that are consistent or orthogonal; and homogeneous liquid crystal elements. 29. The optical device described in item 28 of the scope of patent application, wherein: the aforementioned 90-degree rotating nematic liquid crystal element is arranged near the optical axis of the aforementioned linearly polarized light. 30. The recorded optical device, wherein: the near part of the optical axis is approximately circular or approximately rectangular. 31. The optical device described in item 28 of the scope of patent application, in which the aforementioned homogeneous liquid crystal element is arranged in the aforementioned linearly polarized clear (CN $ M specification (21〇x 297 mm) (Please read first Note on the back < fill in this page) Pack 42 6. The near part of the optical axis in the scope of the patent application. For the optical device described in item 31 of the patent application scope, where: The near part of the optical axis is about Circular or approximately rectangular. 33. The optical device as described in item 23 of the scope of patent application, wherein: m The aforementioned polarization selecting means uses the orientation of the linearly polarized light incident on the aforementioned azimuth polarizing optical element as a reference, and makes The azimuth-polarized optical element is configured to direct the linearly polarized light toward the azimuth of the 90-degree azimuth polarized light, having an azimuth ranging from 0 degrees to 90 degrees 34. The optical device according to item 23 of the scope of patent application, wherein : The aforementioned polarization selecting device is further provided with a condenser edge lens (lens) for condensing the aforementioned light beam. 35. If the scope of patent application is 23 The described optical device, wherein: the main lobe of the month 'J is linearly polarized, and the side lobe is linearly polarized with a different orientation from the main lobe. 36. As described in item 23 of the scope of patent application An optical device, wherein: the aforementioned polarization selecting mechanism is a linear polarizing filter. 37. The optical device described in item 23 of the scope of application for a patent, wherein the above-mentioned azimuth polarizing optical element is capable of electrically polarizing azimuth The function can be generated or stopped. 38. The optical device described in item 37 of the scope of the application for a patent, in which: %% of the azimuth polarization function to generate the azimuth polarization optical element and the azimuth polarization optical element to be made Azimuth deviation 43 A8 B8 C8 D8 6. Where the optical function of the patent application is stopped, the aforementioned light beams are respectively focused on different types of optical discs. 39. The optical device described in item 38 of the patent application scope Among them: The aforementioned different kinds of optical discs are DVDs and CDs. 40. The optical device described in item 38 of the scope of patent application, wherein: Different types of optical discs are DVD and CD-R. C: " 41 · An optical device, which is characterized by including: a linearly polarized light generating mechanism; a diffractive lens element that enables the diffractive function according to an electrical signal It is generated or stopped. The azimuth-polarized optical element converts the aforementioned linearly polarized light into a main lobe wheel and a beam having a side wheel with a different orientation from the main lobe wheel; a condenser lens (lens) The light beam is used for condensing the light on the optical disc; and the 'polarizing selection mechanism' is used to remove the aforementioned side lobe wheel from the aforementioned light beam. 42. An optical device as described in item 41 of the scope of patent application, wherein: The focal distance of the optical device where the diffractive lens element is effective for the diffraction lens element becomes the combined focal distance of the aforementioned diffractive lens element and the aforementioned condensing and clearing; when the diffractive lens element is stopped by the diffraction function In this case, the focal distance of the optical device becomes only the focal distance of the aforementioned condenser lens. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) '(Please read the notes on the back ^ < fill out this page) 44- 、申請專利範圍 如申請專利範圍第41項所記載之光學裝置，复中. 前述繞射型透鏡元件為液晶菲涅爾透；. 4(如申請專利範圍第41項所記載之光學裝置鏡其中 係構件及前迷方位偏一， 45. 如申請專利範圍第41項所記載之光學裝置，其中. 前述直線偏光產生機構，係半導體雷射元件·。 46. 如申請專利範圍第41項所記載之光學裝置，其中： 前述直線偏光為干涉光。 47. 如申請專利範圍第41項所記載之光學裝置，其中： 前述方位偏光光學元件，於所入射之前述直線偏 光的有效光束内，對於前述直線偏光大約不具有相位 分佈。 48. 如申請專利範圍第41項所記載之光學裝置，其中： 前述方位偏光光學元件，對於所入射之前述直線 偏光之光轴近傍或僅對於先軸近傍以外有其機能。 49. 如申請專利範圍第48項所記載之光學裝置，其中，前 述方位偏光光學元件之構成尚具有： 90度旋轉向列型液晶元件，係具有與前述直線偏 光之偏光軸大約為一致，或相直交之液晶分子的配向 軸；及 同質性型液晶元件》 50. 如申請專利範圍第49項所記載之光學裝置，其中： 前述90度旋轉向列型液晶元件，係配置在前述直 本紙張&度適用中國國家標準（CNS)A4規格（210 X 297公楚） (請先閱讀背面之注意事項再填寫本頁) 裝--------訂--------- 經濟部智慧財產局貝工消費合作社印製 45 A8 B8 C8 D8 六、 經濟部智慧財產局興工消費合作社印製 申請專利範圍 線偏光之光轴近傍部份。 51.如申請專利範圍第5〇項所記載之光學裝置，其中： 前述光轴近傍部份，係大約為圓形或大約為長方 閲 讀 背 之 注 意 事 項 形0 · 52·如申請專利範圍第49項所記載之光學裝置，其中： 前述同質性型液晶元件，係配置在前述直線偏光 之光軸近傍部份* 53. 如申請專利範圍第52項所記載之光學裝置，其中： 前述光軸近傍部份，係大約為圓形或大約為長方 形》 54. 如申請專利範圍第41項所記載之光學裝置，其中： 訂 前述偏光選擇機構，係將入射在前述方位偏光光 學元件之前述直線偏光的方位作為基準，並使前述方 位偏光光學元件配置為將前述直線偏光向著作9〇度方 位偏光之方向具有0度以上而9〇度以下之範圍的方位。 55. 如申請專利範圍第41項所記載之光學裝置，其中： 前述偏光選擇機構再具有欲將前述光束予以聚光 之用的聚光透鏡。 56. 如申請專利範圍第41項所記載之光學裝置，其中 前述主辦輪為直線偏光而且前述旁瓣輪乃與前述 主辦輪為方位相異之直線偏光》 57. 如申請專利範圍第41項所記載之光學裝置，其中 前述偏光選擇機構為直線偏光遽光器。 58. 如申請專利範圍第41項所記載之光學裝置，其中 (CNS)A4 ^ (210 462. The scope of the patent application is the optical device described in item 41 of the scope of the patent application, which is repeated. The aforementioned diffractive lens element is a liquid crystal Fresnel lens; 4 (such as the lens of the optical device described in item 41 of the scope of patent application The orientation of the components and the front fan are one and the same. 45. The optical device described in item 41 of the scope of patent application, in which the aforementioned linear polarization generating mechanism is a semiconductor laser element. 46. As described in item 41 of the scope of patent application An optical device, wherein: the aforementioned linearly polarized light is interference light. 47. The optical device according to item 41 of the scope of application for a patent, wherein: the aforementioned azimuthally polarized optical element is within an incident effective beam of the aforementioned linearly polarized light. Linearly polarized light has approximately no phase distribution. 48. The optical device described in item 41 of the scope of patent application, wherein: the azimuth-polarized optical element is near the optical axis of the incident linearly polarized light or only near the anterior axis 49. The optical device as described in item 48 of the scope of patent application, wherein the aforementioned azimuth polarizing optical element The composition still has: a 90-degree rotating nematic liquid crystal element, which has an alignment axis of liquid crystal molecules that are approximately the same as the polarization axis of the linearly polarized light, or are orthogonal to each other; and a homogeneous liquid crystal element "50. Such as the scope of patent application The optical device according to item 49, wherein: The aforementioned 90-degree rotating nematic liquid crystal element is arranged on the aforementioned straight paper & degree Applies to Chinese National Standard (CNS) A4 specification (210 X 297 cm) (please first (Please read the notes on the back and fill in this page.) Packing -------- Order --------- Printed by Shelley Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 45 A8 B8 C8 D8 The property bureau Xinggong Consumer Cooperative Co., Ltd. prints the optical axis near the line of polarized light in the scope of patent application. 51. The optical device described in Item 50 of the scope of patent application, wherein: The near part of the optical axis is approximately circular or Cautions for reading on the side of a rectangular shape 0 · 52 · The optical device described in item 49 of the scope of patent application, wherein: The aforementioned homogeneous liquid crystal element is arranged in the aforementioned linearly polarized light Proximity part * 53. The optical device described in item 52 of the scope of patent application, wherein: the near part of the optical axis is approximately circular or approximately rectangular "54. As described in item 41 of the scope of patent application An optical device, wherein: the aforementioned polarization selection mechanism is ordered based on the orientation of the linearly polarized light incident on the azimuth polarized optical element as a reference, and the azimuth polarized optical element is configured to direct the linearly polarized light toward the 90-degree azimuth polarized light The direction has an orientation in a range of 0 degrees to 90 degrees. 55. The optical device described in item 41 of the scope of patent application, wherein: the aforementioned polarization selecting mechanism further has a light condensing device for condensing the light beam lens. 56. The optical device described in item 41 of the scope of patent application, wherein the sponsor wheel is linearly polarized and the side lobe wheel is linearly polarized light with a different orientation from the sponsor wheel. 57. The described optical device, wherein the aforementioned polarization selecting mechanism is a linearly polarized calender. 58. The optical device described in item 41 of the scope of patent application, wherein (CNS) A4 ^ (210 46 >. 經濟部智慧財產局員Η消费合作社印製 A8 B8 C8 D8 、申請專利範圍 前述方位偏光光學元件，係以電氣性能予產生或 予停止方位偏光機能。 59·如申請專利範圍第41項所記載之光學裝置，其中： 將前述繞射型透鏡元件的繞射機能予以產生之場 合，及使前述繞射型透鏡元件之繞射機能予以停止的 場合，係將前述光束分別予以聚光在相異種類之光碟 上。 6〇.如申請專利範圍第59項所記載之光學裝置，其中： 前述相異種類之光碟係DVD與CD ^ 61·如申請專利範圍第59項所記載之光學裝置，其中： 前述相異種類之光碟為DVD與CD-R。 勒 私紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公f (請先閱讀背面之注意事項再填寫本頁) ·丨I丨丨丨丨—訂·丨—丨丨—丨丨人 47 ->. A8, B8, C8, D8, printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperative, and the scope of patent application The aforementioned azimuth polarizing optical element is based on electrical performance to generate or stop the azimuth polarizing function. 59. The optical device according to item 41 of the scope of application for a patent, wherein: when the diffraction function of the aforementioned diffractive lens element is generated, and when the diffraction function of the aforementioned diffractive lens element is stopped, The aforementioned light beams are respectively focused on different kinds of optical discs. 60. The optical device described in item 59 of the scope of the patent application, wherein: the discs of the above-mentioned different types are DVDs and CDs ^ 61. The optical device described in item 59 of the scope of the patent application, wherein: the aforementioned different types The discs are DVD and CD-R. The paper size of Lexu paper is applicable to China National Standard (CNS) A4 specification (210 X 297 male f (please read the precautions on the back before filling in this page) · 丨 I 丨 丨 丨 丨 — 丨 丨 丨 丨 丨 people 47-