TW201827882A - Small-size low-cost 4MP athermalized prime lens - Google Patents

Small-size low-cost 4MP athermalized prime lens Download PDF

Info

Publication number
TW201827882A
TW201827882A TW107102182A TW107102182A TW201827882A TW 201827882 A TW201827882 A TW 201827882A TW 107102182 A TW107102182 A TW 107102182A TW 107102182 A TW107102182 A TW 107102182A TW 201827882 A TW201827882 A TW 201827882A
Authority
TW
Taiwan
Prior art keywords
lens
cost
small
aspheric
low
Prior art date
Application number
TW107102182A
Other languages
Chinese (zh)
Other versions
TWI672521B (en
Inventor
張品光
柳振全
何劍煒
Original Assignee
大陸商東莞市宇瞳光學科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大陸商東莞市宇瞳光學科技股份有限公司 filed Critical 大陸商東莞市宇瞳光學科技股份有限公司
Publication of TW201827882A publication Critical patent/TW201827882A/en
Application granted granted Critical
Publication of TWI672521B publication Critical patent/TWI672521B/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/60—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The invention belongs to the technical field of optical devices and especially relates to a small-size low-cost 4MP athermalized prime lens. The small-size low-cost 4MP athermalized prime lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are successively arrayed from an object side to an image side, wherein the first lens is arranged as a biconcave negative power plastic aspherical lens; the second lens is arranged as a concave-convex positive power plastic aspherical lens; the third lens is arranged as a biconvex positive power glass spherical lens; the fourth lens is arranged as a biconcave negative power plastic aspherical lens; the fifth lens is arranged as a biconvex positive power plastic aspherical lens. Compared with the prior art, the invention has the advantages that a glass plastic combined optical structure with one glass spherical lens and four plastic aspherical lenses is adopted, the advantages that a glass lens is easily processed and the plastic lens is low in cost can be fully utilized, a 4MP and 1/2.7 inch chip is collocated so that the 4MP resolution ratio can be achieved under both visible and invisible light, the cost is lowered and the property is guaranteed.

Description

小型低成本4MP無熱化定焦鏡頭Small low cost 4MP non-heating fixed focus lens

本發明是有關於一種光學器件技術領域，且特別是有關於一種小型低成本4MP無熱化定焦鏡頭。The invention relates to the technical field of optical devices, and in particular to a small and low-cost 4MP non-heating fixed focus lens.

隨著資料傳輸和儲存技術的發展，在監控領域，擁有高清或全高清像素的監控攝影機逐漸佔據市場，高清攝影機晶片有1280*720的像素即720p，全高清攝影機晶片有1920*1080的像素即1080p，還存在一些4MP像素要求；同時，晶片的尺寸大小不一，主流大小為1/3英寸或1/2.7英寸。晶片的規格決定了鏡頭的設計要求， 4MP、1/2.7英寸的晶片足夠能實現更理想的像質，但目前此類鏡頭還存在像質不良的問題，解析度有待提高，提高解析度的方法包括增加鏡片數量，或者使用較少的鏡片縮小通光孔徑，但會造成成本的增加或者通光量的不足，故存在性能與成本難以平衡的問題。With the development of data transmission and storage technology, in the surveillance field, surveillance cameras with HD or Full HD pixels gradually occupy the market. HD camera chips have 1280 * 720 pixels or 720p, and Full HD camera chips have 1920 * 1080 pixels. At 1080p, there are still some 4MP pixel requirements; meanwhile, the size of the chip varies, and the mainstream size is 1/3 inch or 1 / 2.7 inch. The specifications of the chip determine the design requirements of the lens. A 4MP, 1 / 2.7-inch chip is sufficient to achieve a better image quality. However, such lenses still have the problem of poor image quality. The resolution needs to be improved. Methods to improve the resolution This includes increasing the number of lenses, or using fewer lenses to reduce the clear aperture, but it will cause an increase in cost or an insufficient amount of clear light, so there is a problem that it is difficult to balance performance and cost.

有鑑於此，確有必要提供一種小型低成本4MP無熱化定焦鏡頭，其採用1G+4P（一片玻璃鏡片+4片塑膠鏡片）玻塑結合的光學結構，搭配4MP、1/2.7英寸的晶片，能使可見光與紅外光下均達到4MP的解析度，既降低了成本又保證了性能。In view of this, it is indeed necessary to provide a small and low cost 4MP non-heating fixed focus lens, which uses 1G + 4P (one glass lens + 4 plastic lenses) glass-plastic combined optical structure, and is equipped with 4MP, 1 / 2.7 inch The chip can achieve a resolution of 4MP in both visible and infrared light, which not only reduces costs but also guarantees performance.

本發明的目的在於：針對現有技術的不足，而提供一種小型低成本4MP無熱化定焦鏡頭，其採用1G+4P（一片玻璃鏡片+4片塑膠鏡片）玻塑結合的光學結構，搭配4MP、1/2.7英寸的晶片，能使可見光與紅外光下均達到4MP的解析度，既降低了成本又保證了性能。The purpose of the present invention is to provide a small and low-cost 4MP non-thermal fixed focus lens based on the shortcomings of the existing technology. It uses 1G + 4P (one glass lens + 4 plastic lenses) glass-plastic combined optical structure, and 4MP The 1 / 2.7-inch chip can achieve a resolution of 4MP in both visible and infrared light, which reduces costs and ensures performance.

為了達到上述目的，本發明採用如下技術方案：In order to achieve the above object, the present invention adopts the following technical solutions:

本發明提供一種小型低成本4MP無熱化定焦鏡頭，包括從物方到像方依次排列的第一透鏡、第二透鏡、第三透鏡、第四透鏡和第五透鏡，所述第一透鏡為雙凹負光焦度塑膠非球面透鏡，所述第二透鏡為凹凸正光焦度塑膠非球面透鏡，所述第三透鏡為雙凸正光焦度玻璃球面透鏡，所述第四透鏡為雙凹負光焦度塑膠非球面透鏡，所述第五透鏡為雙凸正光焦度塑膠非球面透鏡； 所述第三透鏡和所述第五透鏡的焦距與整個鏡頭的焦距的比值滿足以下條件： 1.94＜|f3/f|＜2.35； 0.97＜|f5/f|＜1.53； 其中，f是整個鏡頭的焦距；f3是所述第三透鏡的焦距；f5是所述第五透鏡的焦距。The invention provides a small and low-cost 4MP non-thermal fixed-focus lens, which includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged in order from the object side to the image side. The first lens Is a double-concave negative-power plastic aspheric lens, the second lens is a concave-convex positive-power plastic aspheric lens, the third lens is a double-convex positive-power glass spherical lens, and the fourth lens is a double-concave The negative power plastic aspheric lens, the fifth lens is a biconvex positive power plastic aspheric lens; the ratio of the focal lengths of the third lens and the fifth lens to the focal length of the entire lens satisfies the following conditions: 1.94 <| F3 / f | <2.35; 0.97 <| f5 / f | <1.53; where f is the focal length of the entire lens; f3 is the focal length of the third lens; f5 is the focal length of the fifth lens.

作為本發明小型低成本4MP無熱化定焦鏡頭的一種改進，所述第一透鏡至所述第五透鏡的焦距、折射率和曲率半徑滿足以下條件： 上表中，“f”為焦距，“n”為折射率，“R”為曲率半徑，“-”號表示方向為負； 其中，f1至f5分別對應於所述第一透鏡至所述第五透鏡的焦距；n1至n5分別對應於所述第一透鏡至所述第五透鏡的折射率；R1、R3、R5、R7和R9分別對應於所述第一透鏡至所述第五透鏡的靠近物方的一面的曲率半徑，R2、R4、R6、R8和R10分別對應於所述第一透鏡至所述第五透鏡的遠離物方的一面的曲率半徑。As an improvement of the small and low-cost 4MP non-thermal fixed-focus lens of the present invention, the focal length, refractive index, and curvature radius of the first lens to the fifth lens satisfy the following conditions: In the table above, "f" is the focal length, "n" is the refractive index, "R" is the radius of curvature, and "-" sign indicates that the direction is negative; where f1 to f5 respectively correspond to the first lens to the first lens. The focal lengths of the five lenses; n1 to n5 respectively correspond to the refractive indices of the first lens to the fifth lens; R1, R3, R5, R7, and R9 correspond to the first lens to the fifth lens, respectively. The radius of curvature of the side close to the object side, R2, R4, R6, R8, and R10 respectively correspond to the radius of curvature of the side away from the object side of the first lens to the fifth lens.

作為本發明小型低成本4MP無熱化定焦鏡頭的一種改進，所述第一透鏡、所述第二透鏡、所述第四透鏡和所述第五透鏡滿足如下公式：其中：為所述非球面透鏡沿光軸方向在高度為的位置時，距所述非球面透鏡頂點的距離矢高，c=1/R，R表示所述非球面透鏡面型中心的曲率半徑，表示圓錐係數， 參數、、、、、為高次非球面係數。As an improvement of the small and low-cost 4MP non-thermal fixed-focus lens of the present invention, the first lens, the second lens, the fourth lens, and the fifth lens satisfy the following formula: among them: The height of the aspheric lens along the direction of the optical axis is At the position of the aspheric lens, the distance from the vertex of the aspheric lens is high, c = 1 / R, R represents the radius of curvature of the center of the aspheric lens surface, Represents the cone coefficient, parameter , , , , , Is the high-order aspheric coefficient.

作為本發明小型低成本4MP無熱化定焦鏡頭的一種改進，所述第一透鏡與所述第二透鏡通過soma緊配，soma為遮光片。As an improvement of the small and low-cost 4MP non-thermal fixed-focus lens of the present invention, the first lens and the second lens are closely matched through Soma, and Soma is a light shielding film.

作為本發明小型低成本4MP無熱化定焦鏡頭的一種改進，所述第二透鏡與所述第三透鏡通過隔圈緊配。As an improvement of the small and low cost 4MP non-heating fixed focus lens of the present invention, the second lens and the third lens are closely matched through a spacer.

作為本發明小型低成本4MP無熱化定焦鏡頭的一種改進，所述第三透鏡與所述第四透鏡通過隔圈緊配。As an improvement of the small and low cost 4MP non-heating fixed focus lens of the present invention, the third lens and the fourth lens are closely matched through a spacer.

作為本發明小型低成本4MP無熱化定焦鏡頭的一種改進，所述第四透鏡與所述第五透鏡通過soma緊配。As an improvement of the small and low-cost 4MP non-thermal fixed-focus lens of the present invention, the fourth lens and the fifth lens are closely matched through Soma.

相對於現有技術，本發明具有如下的優點：Compared with the prior art, the present invention has the following advantages:

第一，本發明的第一透鏡、第二透鏡、第四透鏡和第五透鏡採用了塑膠鏡片，做到了低成本和高性能，塑膠鏡片的成本遠低於玻璃球面鏡片，故而降低了成本；又由於本發明的第一透鏡、第二透鏡、第四透鏡和第五透鏡均採用了非球面鏡片，相比傳統的球面鏡片提高了性能。First, the first lens, the second lens, the fourth lens, and the fifth lens of the present invention use plastic lenses to achieve low cost and high performance. The cost of plastic lenses is much lower than that of glass spherical lenses, thereby reducing costs; In addition, since the first lens, the second lens, the fourth lens, and the fifth lens of the present invention all use aspherical lenses, the performance is improved compared with the conventional spherical lenses.

第二，本發明採用1個玻璃球面鏡片加4個塑膠非球面鏡片的玻塑結合的光學結構，充分發揮玻璃鏡片易於加工、塑膠鏡片成本低的優勢，搭配4MP、1/2.7英寸的晶片，能使可見光與紅外光下均達到4MP的解析度，既降低了成本又保證了性能。Second, the present invention adopts a glass-plastic combined optical structure of one glass spherical lens and four plastic aspheric lenses, which fully utilizes the advantages of easy processing of glass lenses and low cost of plastic lenses, and is equipped with 4MP, 1 / 2.7 inch wafers. It can achieve a resolution of 4MP in both visible and infrared light, which not only reduces costs but also guarantees performance.

第三，本發明的可見光可達到百萬級像素，通過合理使用玻璃及光學塑膠組合，成像品質良好，並使得在可見光成像清晰的情況下無需調焦即可對紅外光也清晰成像，而且使得紅外成像亦能達到百萬像素，即使在夜晚低照度下也能實現清晰明亮的監控畫面，實現日夜共焦功能。同時具備溫度補償功能和被動無熱化功能，能夠達到在-30~+80℃環境下使用不失焦。Third, the visible light of the present invention can reach millions of pixels. Through the reasonable use of glass and optical plastics, the imaging quality is good, and the infrared light can be clearly imaged without focusing when the visible light imaging is clear. Infrared imaging can also reach megapixels. Even in low light at night, it can achieve clear and bright monitoring images, and achieve day and night confocal function. Equipped with temperature compensation function and passive non-heating function, it can achieve no defocusing under -30 ~ + 80 ℃ environment.

以下將結合具體實施例對本發明及其有益效果作進一步詳細的說明，但是，本發明的具體實施方式並不局限於此。The present invention and its beneficial effects will be further described in detail in conjunction with specific embodiments, but the specific implementation manners of the present invention are not limited thereto.

如圖1和圖2所示，本發明提供的一種小型低成本4MP無熱化定焦鏡頭，包括從物方到像方依次排列的第一透鏡1、第二透鏡2、第三透鏡3、第四透鏡4和第五透鏡5，第一透鏡1為雙凹負光焦度塑膠非球面透鏡，第二透鏡2為凹凸正光焦度塑膠非球面透鏡，第三透鏡3為雙凸正光焦度玻璃球面透鏡，第四透鏡4為雙凹負光焦度塑膠非球面透鏡，第五透鏡5為雙凸正光焦度塑膠非球面透鏡； 第三透鏡3和第五透鏡5的焦距與整個鏡頭的焦距的比值滿足以下條件： 1.94＜|f3/f|＜2.35； 0.97＜|f5/f|＜1.53； 其中，f是整個鏡頭的焦距；f3是第三透鏡3的焦距；f5是第五透鏡5的焦距，以達到小型化、高性能的目的。As shown in FIG. 1 and FIG. 2, the present invention provides a small and low-cost 4MP non-thermal fixed-focus lens, which includes a first lens 1, a second lens 2, a third lens 3, and the like arranged in order from the object side to the image side. The fourth lens 4 and the fifth lens 5, the first lens 1 is a biconcave negative power plastic aspheric lens, the second lens 2 is a convex positive power plastic aspheric lens, and the third lens 3 is a biconvex positive power Glass spherical lens, the fourth lens 4 is a double concave negative power plastic aspheric lens, the fifth lens 5 is a double convex positive power plastic aspheric lens; the focal lengths of the third lens 3 and the fifth lens 5 are the same as those of the entire lens The ratio of the focal lengths meets the following conditions: 1.94 <| f3 / f | <2.35; 0.97 <| f5 / f | <1.53; where f is the focal length of the entire lens; f3 is the focal length of the third lens 3; f5 is the fifth lens 5 focal length to achieve the purpose of miniaturization and high performance.

第一透鏡1至第五透鏡5的焦距、折射率和曲率半徑滿足以下條件： 上表中，“f”為焦距，“n”為折射率，“R”為曲率半徑，“-”號表示方向為負； 其中，f1至f5分別對應於第一透鏡1至第五透鏡5的焦距；n1至n5分別對應於第一透鏡1至第五透鏡5的折射率；R1、R3、R5、R7和R9分別對應於第一透鏡1至第五透鏡5的靠近物方的一面的曲率半徑，R2、R4、R6、R8和R10分別對應於第一透鏡1至第五透鏡5的遠離物方的一面的曲率半徑。The focal length, refractive index, and radius of curvature of the first lens 1 to the fifth lens 5 satisfy the following conditions: In the above table, "f" is the focal length, "n" is the refractive index, "R" is the radius of curvature, and "-" sign indicates that the direction is negative; where f1 to f5 correspond to the first lens 1 to the fifth lens 5 respectively. N1 to n5 correspond to the refractive indices of the first lens 1 to the fifth lens 5; R1, R3, R5, R7, and R9 correspond to the object-side faces of the first lens 1 to the fifth lens 5, respectively. The curvature radii, R2, R4, R6, R8, and R10 respectively correspond to the curvature radii of the first lens 1 to the fifth lens 5 on the side far from the object side.

第一透鏡1、第二透鏡2、第四透鏡4和第五透鏡5滿足如下公式：其中：為非球面透鏡沿光軸方向在高度為的位置時，距非球面透鏡頂點的距離矢高，c=1/R，R表示非球面透鏡面型中心的曲率半徑，表示圓錐係數， 參數、、、、、為高次非球面係數。The first lens 1, the second lens 2, the fourth lens 4, and the fifth lens 5 satisfy the following formula: among them: Is an aspheric lens along the optical axis at a height of At the position of the lens, the distance from the vertex of the aspheric lens is high, c = 1 / R, R is the radius of curvature of the center of the aspheric lens surface, Represents the cone coefficient, parameter , , , , , Is the high-order aspheric coefficient.

第一透鏡1與第二透鏡2通過soma緊配。The first lens 1 and the second lens 2 are closely matched by soma.

第二透鏡2與第三透鏡3通過隔圈緊配。The second lens 2 and the third lens 3 are closely matched through a spacer.

第三透鏡3與第四透鏡4通過隔圈緊配。The third lens 3 and the fourth lens 4 are closely matched through a spacer.

第四透鏡4與第五透鏡5通過soma緊配。The fourth lens 4 and the fifth lens 5 are closely matched by soma.

實施例1Example 1

如圖1和2所示，本實施例提供了一種小型低成本4MP無熱化定焦鏡頭，包括從物方到像方依次排列的第一透鏡1、第二透鏡2、第三透鏡3、第四透鏡4和第五透鏡5，第一透鏡1為雙凹負光焦度塑膠非球面透鏡，第二透鏡2為凹凸正光焦度塑膠非球面透鏡，第三透鏡3為雙凸正光焦度玻璃球面透鏡，第四透鏡4為雙凹負光焦度塑膠非球面透鏡，第五透鏡5為雙凸正光焦度塑膠非球面透鏡；第一透鏡1與第二透鏡2通過soma緊配。第二透鏡2與第三透鏡3通過隔圈緊配。第三透鏡3與第四透鏡4通過隔圈緊配。第四透鏡4與第五透鏡5通過soma緊配。As shown in FIGS. 1 and 2, this embodiment provides a small and low-cost 4MP non-thermal fixed-focus lens, which includes a first lens 1, a second lens 2, a third lens 3, and the like arranged in order from the object side to the image side. The fourth lens 4 and the fifth lens 5, the first lens 1 is a biconcave negative power plastic aspheric lens, the second lens 2 is a convex positive power plastic aspheric lens, and the third lens 3 is a biconvex positive power A glass spherical lens, the fourth lens 4 is a double concave negative power plastic aspheric lens, and the fifth lens 5 is a double convex positive power plastic aspheric lens; the first lens 1 and the second lens 2 are closely matched through soma. The second lens 2 and the third lens 3 are closely matched through a spacer. The third lens 3 and the fourth lens 4 are closely matched through a spacer. The fourth lens 4 and the fifth lens 5 are closely matched by soma.

本實施例中，各透鏡的面型、曲率半徑R、鏡片厚度、鏡片間距、鏡片折射率nd和K值分別滿足以下條件（表1）： 表1中，“R”為曲率半徑，“-”號表示方向為負，“PL”表示平面，上表同一面序號既有折射率資料nd，又有資料D。資料D表示該透鏡軸心線處的厚度，同一面序號只有資料D而沒有折射率資料nd的資料D表示該透鏡到下一透鏡面的間距。面序號1和2分別對應第一透鏡1的朝向物方的面和朝向像方的面；面序號3和4分別對應第二透鏡2的朝向物方的面和朝向像方的面；面序號5和6分別對應第三透鏡3的朝向物方的面和朝向像方的面；面序號7和8分別對應第四透鏡4的朝向物方的面和朝向像方的面；面序號9和10分別對應第五透鏡5的朝向物方的面和朝向像方的面。In this embodiment, the surface shape, radius of curvature R, lens thickness, lens pitch, lens refractive index nd and K of each lens satisfy the following conditions (Table 1): In Table 1, "R" is the radius of curvature, "-" indicates the direction is negative, and "PL" indicates a plane. The serial number on the same surface in the table above includes both refractive index data nd and data D. The data D indicates the thickness at the center line of the lens, and the data D on the same surface with only data D and no refractive index data nd indicates the distance from the lens to the next lens surface. The surface numbers 1 and 2 correspond to the object-facing and image-facing surfaces of the first lens 1 respectively; the surface numbers 3 and 4 correspond to the object-facing and image-facing surfaces of the second lens 2 respectively; the surface numbers 5 and 6 correspond to the object-facing surface and the image-facing surface of the third lens 3 respectively; the surface numbers 7 and 8 correspond to the object-facing surface and the image-facing surface of the fourth lens 4 respectively; the surface numbers 9 and 10 corresponds to the object-facing surface and the image-facing surface of the fifth lens 5, respectively.

表1中面序號為1、2、3、4、7、8、9和10的面為非球面，非球面鏡片滿足如下公式：其中：為非球面透鏡沿光軸方向在高度為的位置時，距非球面透鏡頂點的距離矢高，c=1/R，R表示非球面透鏡面型中心的曲率半徑，表示圓錐係數， 參數、、、、、為高次非球面係數。The surfaces with surface numbers 1, 2, 3, 4, 7, 8, 9, and 10 in Table 1 are aspheric. Aspheric lenses satisfy the following formula: among them: Is an aspheric lens along the optical axis at a height of At the position of the lens, the distance from the vertex of the aspheric lens is high, c = 1 / R, R is the radius of curvature of the center of the aspheric lens surface, Represents the cone coefficient, parameter , , , , , Is the high-order aspheric coefficient.

本實施例中非球面面型參數見表2： 表2：第1、2、3、4、7、8、9和10表面的非球面參數。 The aspheric surface type parameters in this embodiment are shown in Table 2: Table 2: Aspheric surface parameters of the first, second, third, fourth, seventh, eighth, nineth and tenth surfaces.

總之，本發明具有如下的優點：In summary, the present invention has the following advantages:

第一，本發明的第一透鏡1、第二透鏡2、第四透鏡4和第五透鏡5採用了塑膠鏡片，做到了低成本和高性能，塑膠鏡片的成本遠低於玻璃球面鏡片，故而降低了成本；又由於本發明的第一透鏡1、第二透鏡2、第四透鏡4和第五透鏡5均採用了非球面鏡片，相比傳統的球面鏡片提高了性能。First, the first lens 1, the second lens 2, the fourth lens 4, and the fifth lens 5 of the present invention use plastic lenses, which achieve low cost and high performance. The cost of plastic lenses is much lower than that of glass spherical lenses. The cost is reduced; and because the first lens 1, the second lens 2, the fourth lens 4, and the fifth lens 5 of the present invention all use aspherical lenses, the performance is improved compared with the conventional spherical lenses.

第二，本發明採用1個玻璃球面鏡片加4個塑膠非球面鏡片的玻塑結合的光學結構，充分發揮玻璃鏡片易於加工、塑膠鏡片成本低的優勢，搭配4MP、1/2.7英寸的晶片，能使可見光與紅外光下均達到4MP的解析度，既降低了成本又保證了性能。Second, the present invention adopts a glass-plastic combined optical structure of one glass spherical lens and four plastic aspheric lenses, which fully utilizes the advantages of easy processing of glass lenses and low cost of plastic lenses, and is equipped with 4MP, 1 / 2.7 inch wafers. It can achieve a resolution of 4MP in both visible and infrared light, which not only reduces costs but also guarantees performance.

第三，本發明的可見光可達到百萬級像素，通過合理使用玻璃及光學塑膠組合，成像品質良好，並使得在可見光成像清晰的情況下無需調焦即可對紅外光也清晰成像，而且使得紅外成像亦能達到百萬像素，即使在夜晚低照度下也能實現清晰明亮的監控畫面，實現日夜共焦功能。同時具備溫度補償功能和被動無熱化功能，能夠達到在-30~+80℃環境下使用不失焦。Third, the visible light of the present invention can reach millions of pixels. Through the reasonable use of glass and optical plastics, the imaging quality is good, and the infrared light can be clearly imaged without focusing when the visible light imaging is clear. Infrared imaging can also reach megapixels. Even in low light at night, it can achieve clear and bright monitoring images, and achieve day and night confocal function. Equipped with temperature compensation function and passive non-heating function, it can achieve no defocusing under -30 ~ + 80 ℃ environment.

根據上述說明書的揭示和教導，本發明所屬領域的技術人員還可以對上述實施方式進行適當的變更和修改。因此，本發明並不局限於上面揭示和描述的具體實施方式，對本發明的一些修改和變更也應當落入本發明的權利要求的保護範圍內。此外，儘管本說明書中使用了一些特定的術語，但這些術語只是為了方便說明，並不對本發明構成任何限制。Based on the disclosure and teachings of the foregoing specification, those skilled in the art to which the present invention pertains may also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation to the present invention.

1‧‧‧第一透鏡1‧‧‧first lens

2‧‧‧第二透鏡2‧‧‧Second lens

3‧‧‧第三透鏡3‧‧‧ third lens

4‧‧‧第四透鏡4‧‧‧ fourth lens

5‧‧‧第五透鏡5‧‧‧ fifth lens

圖1為本發明的光學結構示意圖。 圖2為本發明的組裝結構圖。FIG. 1 is a schematic diagram of an optical structure of the present invention. FIG. 2 is an assembly structure diagram of the present invention.

Claims (7)

一種小型低成本4MP無熱化定焦鏡頭，包括： 從物方到像方依次排列的第一透鏡、第二透鏡、第三透鏡、第四透鏡和第五透鏡，所述第一透鏡為雙凹負光焦度塑膠非球面透鏡，所述第二透鏡為凹凸正光焦度塑膠非球面透鏡，所述第三透鏡為雙凸正光焦度玻璃球面透鏡，所述第四透鏡為雙凹負光焦度塑膠非球面透鏡，所述第五透鏡為雙凸正光焦度塑膠非球面透鏡； 所述第三透鏡和所述第五透鏡的焦距與整個鏡頭的焦距的比值滿足以下條件： 1.94＜|f3/f|＜2.35； 0.97＜|f5/f|＜1.53； 其中，f是整個鏡頭的焦距；f3是所述第三透鏡的焦距；f5是所述第五透鏡的焦距。A small and low-cost 4MP non-thermal fixed-focus lens includes: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged in order from the object side to the image side, and the first lens is a double lens. Concave negative power plastic aspheric lens, the second lens is a convex positive power plastic aspheric lens, the third lens is a double convex positive power glass spherical lens, and the fourth lens is a double concave negative light A plastic aspheric lens with a refractive power, and the fifth lens is a biconvex positive-power plastic aspheric lens; a ratio of a focal length of the third lens and the fifth lens to a focal length of the entire lens satisfies the following conditions: 1.94 <| f3 / f | <2.35; 0.97 <| f5 / f | <1.53; where f is the focal length of the entire lens; f3 is the focal length of the third lens; f5 is the focal length of the fifth lens. 如申請專利範圍第1項所述的小型低成本4MP無熱化定焦鏡頭，其中所述第一透鏡至所述第五透鏡的焦距、折射率和曲率半徑滿足以下條件： 上表中，“f”為焦距，“n”為折射率，“R”為曲率半徑，“-”號表示方向為負； 其中，f1至f5分別對應於所述第一透鏡至所述第五透鏡的焦距；n1至n5分別對應於所述第一透鏡至所述第五透鏡的折射率；R1、R3、R5、R7和R9分別對應於所述第一透鏡至所述第五透鏡的靠近物方的一面的曲率半徑，R2、R4、R6、R8和R10分別對應於所述第一透鏡至所述第五透鏡的遠離物方的一面的曲率半徑。The small and low-cost 4MP non-thermal fixed-focus lens according to item 1 of the scope of patent application, wherein the focal length, refractive index, and radius of curvature of the first lens to the fifth lens satisfy the following conditions: In the table above, "f" is the focal length, "n" is the refractive index, "R" is the radius of curvature, and "-" sign indicates that the direction is negative; where f1 to f5 respectively correspond to the first lens to the first lens. The focal lengths of the five lenses; n1 to n5 respectively correspond to the refractive indices of the first lens to the fifth lens; R1, R3, R5, R7, and R9 correspond to the first lens to the fifth lens, respectively. The radius of curvature of the side close to the object side, R2, R4, R6, R8, and R10 respectively correspond to the radius of curvature of the side away from the object side of the first lens to the fifth lens. 如申請專利範圍第1項所述的小型低成本4MP無熱化定焦鏡頭，所述第一透鏡、所述第二透鏡、所述第四透鏡和所述第五透鏡滿足如下公式：其中：為所述非球面透鏡沿光軸方向在高度為的位置時，距所述非球面透鏡頂點的距離矢高，c=1/R，R表示所述非球面透鏡面型中心的曲率半徑，表示圓錐係數， 參數、、、、、為高次非球面係數。According to the small and low-cost 4MP non-heating fixed focus lens described in the first patent application scope, the first lens, the second lens, the fourth lens, and the fifth lens satisfy the following formula: among them: The height of the aspheric lens along the direction of the optical axis is At the position of the aspheric lens, the distance from the vertex of the aspheric lens is high, c = 1 / R, R represents the radius of curvature of the center of the aspheric lens surface, Represents the cone coefficient, parameter , , , , , Is the high-order aspheric coefficient. 如申請專利範圍第1項所述的小型低成本4MP無熱化定焦鏡頭，所述第一透鏡與所述第二透鏡通過soma緊配。For example, the small and low-cost 4MP non-thermal fixed-focus lens described in item 1 of the scope of patent application, the first lens and the second lens are closely matched through soma. 如申請專利範圍第1項所述的小型低成本4MP無熱化定焦鏡頭，所述第二透鏡與所述第三透鏡通過隔圈緊配。For example, the small and low-cost 4MP non-heating fixed focus lens described in item 1 of the scope of patent application, the second lens and the third lens are closely matched through a spacer. 如申請專利範圍第1項所述的小型低成本4MP無熱化定焦鏡頭，所述第三透鏡與所述第四透鏡通過隔圈緊配。According to the small and low-cost 4MP non-heating fixed focus lens described in the first patent application scope, the third lens and the fourth lens are closely matched through a spacer. 如申請專利範圍第1項所述的小型低成本4MP無熱化定焦鏡頭，所述第四透鏡與所述第五透鏡通過soma緊配。For example, the small and low cost 4MP non-heating fixed focus lens described in the first patent application scope, the fourth lens and the fifth lens are closely matched through soma.
TW107102182A 2017-01-22 2018-01-22 Small, low-cost, 4 megapixel, non-heating fixed-focus lens TWI672521B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
??201710054379.8 2017-01-22
CN201710054379.8A CN106597641B (en) 2017-01-22 2017-01-22 Small-sized low-cost 4MP athermal prime lens

Publications (2)

Publication Number Publication Date
TW201827882A true TW201827882A (en) 2018-08-01
TWI672521B TWI672521B (en) 2019-09-21

Family

ID=58586262

Family Applications (1)

Application Number Title Priority Date Filing Date
TW107102182A TWI672521B (en) 2017-01-22 2018-01-22 Small, low-cost, 4 megapixel, non-heating fixed-focus lens

Country Status (3)

Country Link
KR (1) KR101958899B1 (en)
CN (1) CN106597641B (en)
TW (1) TWI672521B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107037570B (en) * 2017-05-26 2023-06-16 东莞市宇瞳光学科技股份有限公司 Athermalization high-definition prime lens
TWI667492B (en) 2018-08-31 2019-08-01 聲遠精密光學股份有限公司 Wide angle imaging lens
CN109270661B (en) * 2018-11-21 2024-07-09 浙江舜宇光学有限公司 Image pickup lens group
CN109541785A (en) * 2019-01-22 2019-03-29 浙江舜宇光学有限公司 Optical lens group
CN110187476A (en) * 2019-07-08 2019-08-30 东莞市宇瞳光学科技股份有限公司 A kind of tight shot that glass modeling is mixed
CN110658610A (en) * 2019-09-30 2020-01-07 江西特莱斯光学有限公司 4K vehicle event data recorder camera lens
CN111929867A (en) * 2020-08-03 2020-11-13 凤凰光学股份有限公司 Day and night high-low temperature confocal optical lens
CN113376811A (en) * 2021-06-30 2021-09-10 福建福光股份有限公司 2.8mm large-aperture day and night dual-purpose glass-plastic fixed-focus optical system
CN113448061B (en) * 2021-08-15 2024-05-17 博圳道(深圳)科技有限公司 Full-picture double-aspheric lens
CN114280759A (en) * 2021-12-10 2022-04-05 东莞市长益光电有限公司 Day and night dual-purpose high-definition glass-plastic mixed prime lens
CN114895432B (en) * 2022-04-13 2024-05-28 舜宇光学(中山)有限公司 Glass-plastic mixed fixed-focus optical system
CN114839743B (en) * 2022-04-19 2023-10-10 拾斛科技(南京)有限公司 Endoscope with a lens
CN115480378A (en) * 2022-09-26 2022-12-16 舜宇光学(中山)有限公司 Fixed focus lens
CN117806009B (en) * 2024-02-29 2024-06-11 江西联益光学有限公司 Day and night confocal lens

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI351530B (en) * 2007-07-05 2011-11-01 Largan Precision Co Ltd Inverse telephoto with correction lenses
JP2010107532A (en) 2008-10-28 2010-05-13 Fujinon Corp Imaging lens and imaging apparatus using the imaging lens
CN101587232B (en) * 2009-06-09 2012-01-11 宁波舜宇车载光学技术有限公司 New megapixels wide-angle lens
CN102213816B (en) * 2010-04-02 2012-12-19 大立光电股份有限公司 Optical photographic lens
JP5584938B2 (en) * 2011-02-28 2014-09-10 株式会社オプトロジック Imaging lens
WO2013027370A1 (en) 2011-08-25 2013-02-28 富士フイルム株式会社 Image pickup lens and image pickup apparatus using same
JP6005941B2 (en) * 2012-01-16 2016-10-12 カンタツ株式会社 Imaging lens
JP6048882B2 (en) * 2013-02-28 2016-12-21 株式会社オプトロジック Imaging lens
CN104076491B (en) 2014-04-10 2016-04-13 东莞市宇瞳光学科技股份有限公司 6mm day and night tight shot
KR102400015B1 (en) * 2015-02-24 2022-05-19 삼성전자주식회사 Imaging lens and imaging apparatus including the same
JP6578785B2 (en) 2015-07-24 2019-09-25 株式会社リコー Imaging optical system, camera device, and portable information terminal device
CN205176364U (en) * 2015-11-06 2016-04-20 舜宇光学(中山)有限公司 Dual -purpose control tight shot of day night
CN105301739B (en) * 2015-11-06 2017-12-22 舜宇光学(中山)有限公司 A kind of day and night monitors tight shot
CN105403984B (en) * 2015-11-23 2018-06-22 舜宇光学(中山)有限公司 A kind of day and night monitoring camera
CN206532026U (en) * 2017-01-22 2017-09-29 东莞市宇瞳光学科技股份有限公司 Small low-cost 4MP is without thermalization tight shot

Also Published As

Publication number Publication date
KR20180087133A (en) 2018-08-01
CN106597641A (en) 2017-04-26
TWI672521B (en) 2019-09-21
CN106597641B (en) 2022-10-18
KR101958899B1 (en) 2019-07-02

Similar Documents

Publication Publication Date Title
TWI672521B (en) Small, low-cost, 4 megapixel, non-heating fixed-focus lens
CN105974561B (en) Wide-angle camera
TWI528049B (en) Fixed-focus lens
TWI660193B (en) Optical lens
TW201901228A (en) Large aperture super wide-angle ultra-high definition zoom lens
TWI480577B (en) Wide-angle lens
TWI796312B (en) Lens and fabrication method thereof
TW201326884A (en) Image capturing system
WO2016176911A1 (en) Small-size wide-angle camera lens
CN204536643U (en) A kind of zoom lens
CN104199176A (en) Oversized field-of-view lens for monitoring system
TW201839453A (en) Fixed focus lens
TWI631366B (en) Optical lens
CN107037570B (en) Athermalization high-definition prime lens
TWM565800U (en) Small-size low-cost 4MP athermalized prime lens
CN106680973B (en) Miniaturized large-view-field high-definition athermal prime lens
CN107436479A (en) Inexpensive large aperture 4MP is without thermalization tight shot
WO2022056934A1 (en) Optical imaging system, image capturing module, and electronic device
TWI408407B (en) Ultra wide angle lens
CN104849840B (en) Miniaturized high-pixel shooting optical system and lens applying same
TWI793570B (en) Optical imaging system,acquisition module and electronic equipment
TW201706657A (en) Wide-angle lens
CN106680978A (en) Wide-field-of-view low-cost high definition athermalization prime lens
CN207516626U (en) A kind of ultra-wide angle tight shot
CN106526811A (en) High-resolution super-wide-angle fixed-focus lens