TWM511049U - Structure of contact lens - Google Patents
Structure of contact lens Download PDFInfo
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- TWM511049U TWM511049U TW104210775U TW104210775U TWM511049U TW M511049 U TWM511049 U TW M511049U TW 104210775 U TW104210775 U TW 104210775U TW 104210775 U TW104210775 U TW 104210775U TW M511049 U TWM511049 U TW M511049U
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Description
本創作是有關於一種鏡片加工方法及其構造，尤指一種符合使用者視網膜成像之鏡片構造，用以達到延緩或是阻止視力偏差程度加深之目的。The present invention relates to a lens processing method and a structure thereof, and more particularly to a lens structure conforming to a user's retinal imaging, for the purpose of delaying or preventing the degree of deviation of vision from being deepened.
按，隨著各種電子、電氣產品的研發、創新，帶給人們在日常生活及工作上許多便捷，尤其是3C電子產品的大量問世，更造成在通訊及網際網路的應用的普及化，以致許多人沉浸在3C電子產品的使用領域中，長時間大量應用3C電子產品，不論是上班族、學生族群或是中老年人等，涵蓋的範圍也相當廣泛，進而衍生出低頭族的現象，也因此造就許多人的眼睛視力減損、傷害等情況日趨嚴重，近視人口也就相對提高，為了矯正近視的情況，便必須配戴眼鏡或隱形眼鏡來進行視力矯正，而鏡框式眼鏡與隱形眼鏡是透過鏡片的中央光學區、周邊光學區之內、外層不同曲率的設置模式，以供外部光線清晰地投影成像於眼球的視網膜上，再透過周邊光學區使光線成像於視網膜前的預定視點，即可達到於眼球視野中央提供清晰的影像，而由於周邊視野的度數略有不足，進而延緩或阻止近視加深的視力矯正，而一般周邊光學區則是採用較中央光學區的度數減少一預設度數的單一曲率，但是人的眼球及視網膜並不是絕對規律的形 體，因此鏡框式眼鏡與隱形眼鏡與視網膜在周邊光學區位置深度的距離實際上並不會相同。因此，如何對周邊光學區的成像的位置進行設計而能適用於大多數人們的眼球、達到預期的延緩或是阻止近視加深的目的，遂成為一值得研究的主題。According to the development and innovation of various electronic and electrical products, it brings many conveniences in daily life and work, especially the large number of 3C electronic products, which has caused the popularization of communication and Internet applications. Many people are immersed in the use of 3C electronic products, and a large number of 3C electronic products have been used for a long time, whether it is office workers, student groups or middle-aged people, and the scope of coverage is quite extensive, which leads to the phenomenon of low-headed people. As a result, many people's eye vision loss, injury and other conditions are becoming more and more serious, and the myopia population is relatively increased. In order to correct myopia, glasses or contact lenses must be worn for vision correction, while framed glasses and contact lenses are used. The central optical zone of the lens, the inner and outer optical zones of the lens are arranged with different curvatures for the external light to be clearly projected onto the retina of the eyeball, and then the peripheral optical zone is used to image the light to a predetermined viewpoint in front of the retina. Achieve clear images in the center of the field of view of the eye, and slightly less than the degree of peripheral vision , In turn delay or prevent the progression of myopia vision correction, while the peripheral optical zone is generally employed more degrees central optical zone is reduced to a predetermined single degree of curvature of the human eye and retina but not absolutely regular shape Body, so the distance between the frame glasses and the contact lens and the depth of the retina in the peripheral optical zone is not actually the same. Therefore, how to design the position of the peripheral optical zone to be applied to most people's eyeballs, to achieve the desired delay or to prevent the deepening of myopia, has become a subject worthy of study.
是以，如何解決目前隱形眼鏡之鏡片於周邊光學區製作時無法符合視網膜位置與形狀，以致於無法達到預期的延緩或是阻止近視加深的目的，即為從事此行業之相關廠商所亟欲研究改善之方向所在者。Therefore, how to solve the problem that the lens of the current contact lens cannot conform to the position and shape of the retina when it is made in the peripheral optical zone, so that the intended delay or the prevention of myopia can not be achieved, that is, the research of the relevant manufacturers engaged in this industry is desired. The direction of improvement.
本創作之主要目的乃在於隱形眼鏡之鏡片包含有中央光學區、一圍繞該中央光學區的周邊光學區，該中央光學區能將外界光線清晰成像於使用者眼球中視網膜上，而該周邊光學區為與使用者眼睛中視網膜呈相反方向且立體狀態相符的非規則形狀之周邊光學區，並使圍繞該中央光學區的周邊光學區彎曲面用以使通過的光線可成像於該眼球的視網膜的前方位置，或均位於該視網膜的後方位置，以達到符合於使用者眼球中視網膜形狀，而有效延緩或是阻止視力偏差程度加深之目的。The main purpose of the present invention is that the lens of the contact lens comprises a central optical zone, a peripheral optical zone surrounding the central optical zone, and the central optical zone can clearly image external light on the retina of the user's eyeball, and the peripheral optical The region is an irregularly shaped peripheral optical zone that conforms to the opposite direction of the retina in the user's eye and conforms to the stereoscopic state, and the curved surface of the peripheral optical zone surrounding the central optical zone is used to enable the passing light to be imaged on the retina of the eyeball The front position, or both are located at the rear of the retina, in order to achieve the shape of the retina in the user's eye, and effectively delay or prevent the degree of visual deviation from deepening.
本創作之次要目的乃在於本創作隱形眼鏡之鏡片於加工時，其檢測步驟為利用像差儀檢測使用者眼球中視網膜處之中央清晰影像區及周邊失焦影像區，藉由非旋轉對稱之超精密車床對隱形眼鏡彎曲面外側加工出使用者清晰影像之中央光學區及與使用者眼睛中視網膜呈相反方向且立體狀態相符的非規則形狀之周邊光學區，而圍繞該中央光學區的周邊光學區彎曲面可使通過的光線可成像於該眼球的視網膜前方之周邊失焦影像區位置，或均位於該視網膜後方之周邊失焦影像區位置。The secondary purpose of this creation is that when the lens of the present contact lens is processed, the detection step is to use the aberrometer to detect the central clear image area and the surrounding defocus image area of the retina in the user's eyeball, by non-rotational symmetry. The ultra-precision lathe is formed on the outer side of the curved surface of the contact lens to form a central optical zone of the user's clear image and an irregularly shaped peripheral optical zone that conforms to the opposite direction of the retina in the user's eye and conforms to the stereoscopic state, and surrounds the central optical zone. The curved surface of the peripheral optical zone allows the passing light to be imaged at the position of the surrounding defocused image area in front of the retina of the eyeball, or at the position of the surrounding defocus image area behind the retina.
1‧‧‧鏡片1‧‧‧ lenses
10‧‧‧標記10‧‧‧ mark
11‧‧‧中央光學區11‧‧‧Central Optical Zone
12‧‧‧周邊光學區12‧‧‧ peripheral optical zone
121‧‧‧彎曲面121‧‧‧ curved surface
2‧‧‧眼球2‧‧‧ eyeball
21‧‧‧視網膜21‧‧‧ retina
211‧‧‧中央清晰影像區211‧‧‧Central clear image area
212‧‧‧周邊失焦影像區212‧‧‧After the out-of-focus image area
第一圖 係為本創作第一較佳實施例之光路示意圖。The first figure is a schematic diagram of the optical path of the first preferred embodiment of the creation.
第二圖 係為本創作第一較佳實施例之平面示意圖。The second drawing is a schematic plan view of the first preferred embodiment of the creation.
第三圖 係為本創作第二較佳實施例之光路示意圖。The third figure is a schematic diagram of the optical path of the second preferred embodiment of the present invention.
第四圖 係為本創作隱形眼鏡鏡片之加工流程圖。The fourth figure is the processing flow chart of the creative contact lens.
第五圖 係為本創作隱形眼鏡鏡片較佳實施例之加工流程圖。The fifth drawing is a processing flow chart of a preferred embodiment of the present invention.
為達成上述目的與功效，本創作所採用之技術手段及其構造、實施之方法等，茲繪圖就本創作之較佳實施例詳加說明其特徵與功能如下，俾利完全瞭解。In order to achieve the above objectives and effects, the technical means used in the creation, its construction, the method of implementation, etc., are described in detail in the preferred embodiment of the present invention, and the features and functions are as follows.
請參閱第一、二、三圖所示，係分別為本創作第一較佳實施例之光路示意圖、平面示意圖及第二較佳實施例之光路示意圖，由圖中所示可以清楚看出，本創作鏡片1為包含有中央光學區11、一圍繞該中央光學區11的周邊光學區12，其中：該中央光學區11，用以使通過該中央光學區11的光線清晰成像於使用者眼球2之視網膜21中央清晰影像區211上。Please refer to the first, second and third figures, which are respectively a schematic diagram of the optical path, a schematic plan view and a schematic diagram of the optical path of the second preferred embodiment of the first preferred embodiment, which can be clearly seen from the figure. The lens 1 includes a central optical zone 11 and a peripheral optical zone 12 surrounding the central optical zone 11, wherein the central optical zone 11 is used to clearly image the light passing through the central optical zone 11 to the user's eye. 2 of the retina 21 is in the central clear image area 211.
該周邊光學區12，該周邊光學區12外側表面之彎曲面121設有與使用者眼球2中視網膜21呈相反方向且立體狀態相符的非規則形狀之周邊光學區12，而該中央光學區11外側的周邊光學區12彎曲面121用以使通過的光線可成像於該眼球2的視網膜21前方之周邊失焦影像區212位置，或均位於該視網膜21後方之周邊失焦影像區 212位置。The peripheral optical zone 12, the curved surface 121 of the outer surface of the peripheral optical zone 12 is provided with an irregularly shaped peripheral optical zone 12 which is opposite to the retina 21 in the user's eye 2 and conforms to the solid state, and the central optical zone 11 The outer peripheral optical zone 12 has a curved surface 121 for allowing the passing light to be imaged at a position of the peripheral out-of-focus image area 212 in front of the retina 21 of the eyeball 2, or a peripheral out-of-focus image area located behind the retina 21 212 location.
也可進一步於隱形眼鏡之鏡片1外表面上設有標記10，該標記10為提供使用者配戴時識別方向使用。Further, a mark 10 may be further provided on the outer surface of the lens 1 of the contact lens, which is used to provide a direction of recognition when the user wears.
請參閱第一、二、三、四圖所示，係分別為本創作第一較佳實施例之光路示意圖、平面示意圖、第二較佳實施例之光路示意圖及隱形眼鏡鏡片之加工流程圖，需要注意的是，一般使用者的眼球2的視網膜21呈不規律形體的情況下，也就是說鏡片1周邊光學區12外側表面之彎曲面121與視網膜21距離會更難預測，但是可以利用像差儀檢測使用者眼球2中視網膜21之像差並產生立體形狀之影像圖，並將視網膜21立體形狀圖區分為中央清晰影像區211及圍繞該中央清晰影像區211的周邊失焦影像區212，依據測出來的像差，透過消像差的程式計算出隱形眼鏡鏡片上的度數後，再將視網膜21立體形狀之影像圖輸入非旋轉對稱之超精密車床的控制單元中，再依照視網膜21立體形狀之影像圖由非旋轉對稱之超精密車床對隱形眼鏡外側彎曲面121加工出使用者清晰影像之中央光學區11及與使用者眼睛中視網膜21呈相反方向且立體狀態相符的非規則形狀之周邊光學區12，而周邊光學區12彎曲面121可以使通過的光線可成像於該眼球2之視網膜21前方之周邊失焦影像區212位置，或均位於該視網膜21後方之周邊失焦影像區212位置，而於周邊視野提供相同程度的失焦影像，增加成像的位置是位在與視網膜21最佳距離的位置，以達到符合於使用者眼球2中視網膜21形狀，而有效延緩或是阻止視力偏差程度加深之目的，亦可於非旋轉對稱之超精密車床的控制單元中，再依照視網膜21立體形狀之影像圖由非旋轉對稱 之超精密車床對隱形眼鏡外側彎曲面121加工出使用者配戴標記10。Please refer to the first, second, third and fourth figures, which are respectively a schematic diagram of the optical path, a schematic plan view, a schematic diagram of the optical path of the second preferred embodiment and a processing flow chart of the contact lens of the first preferred embodiment. It should be noted that, in the case where the retina 21 of the eyeball 2 of the general user has an irregular shape, that is, the distance between the curved surface 121 of the outer surface of the peripheral optical zone 12 of the lens 1 and the retina 21 is more difficult to predict, but an image can be utilized. The difference meter detects the aberration of the retina 21 in the eye 2 of the user and generates a stereoscopic image image, and divides the stereoscopic view of the retina 21 into a central clear image area 211 and a peripheral out-of-focus image area 212 surrounding the central clear image area 211. According to the measured aberration, after calculating the degree on the contact lens by the aberration program, the image of the three-dimensional shape of the retina 21 is input into the control unit of the non-rotationally symmetric ultra-precision lathe, and then according to the retina 21 The stereoscopic image image is processed by a non-rotationally symmetrical ultra-precision lathe to the outer curved surface 121 of the contact lens to form a central optical zone 11 of the user's clear image. And an irregularly shaped peripheral optical zone 12 that conforms to the opposite direction of the retina 21 in the user's eye and conforms to the three-dimensional state, and the curved surface 121 of the peripheral optical zone 12 allows the passing light to be imaged around the front of the retina 21 of the eyeball 2 The position of the out-of-focus image area 212 is located at the position of the surrounding defocus image area 212 behind the retina 21, and provides the same degree of out-of-focus image in the peripheral field of view, and the position of the increased image is located at the optimal distance from the retina 21. In order to achieve the shape of the retina 21 in the user's eye 2, and effectively delay or prevent the degree of visual deviation from deepening, or in the control unit of the non-rotationally symmetric ultra-precision lathe, and then according to the image of the retina 21 three-dimensional shape Non-rotational symmetry The ultra-precision lathe is machined with the user's wearing mark 10 on the outer curved surface 121 of the contact lens.
本創作鏡片1在製造上是可行的，如歐洲專利號EP0872307所述，主要是使用車削法加上刀具的震動，其原理在於使刀具的震動精確地配合車床的轉軸的轉動，因此在轉軸旋轉一圈的過程中，刀具切割的深度能夠根據旋轉的角度來改變，而能製造出非對稱的鏡片1。The inventive lens 1 is feasible in manufacturing, as described in European Patent No. EP0872307, mainly using a turning method plus a vibration of a tool, the principle of which is to make the vibration of the tool accurately match the rotation of the rotating shaft of the lathe, and thus rotate on the rotating shaft. In the course of one revolution, the depth of the cutter cutting can be changed according to the angle of rotation, and an asymmetrical lens 1 can be manufactured.
需要說明的是，像差即是物體的光線成像於視網膜上需經過眼內不同組織的折射，所造成不同程度的影像差異度或清晰度。像差儀藉由將光線射入視網膜，測出從視網膜反射的光程，就可以畫出視網膜的形狀，同時也能證明視網膜的不對稱，並能測出角膜的低階像差，如：近視、散光，及高階像差，例如：慧星像差、三葉草像差及球面像差。It should be noted that the aberration is that the light of the object is imaged on the retina and needs to be refracted by different tissues in the eye, resulting in different degrees of image difference or sharpness. By inserting light into the retina and measuring the path of light reflected from the retina, the aberrometer can draw the shape of the retina, and at the same time prove the asymmetry of the retina and measure the low-order aberration of the cornea, such as: Myopia, astigmatism, and high-order aberrations such as comet aberration, clover aberration, and spherical aberration.
且該每個使用者的眼球之眼角膜弧度並不相同，眼角膜弧度會因人而異，二眼之聚焦點並非都是位於二眼正中央位置，所以隱形眼鏡鏡片1之中央光學區11位置並非都是需要設置在隱形眼鏡鏡片1正中央位置處，於實際使用時，先以試戴用之隱形眼鏡表面設有記號，並透過眨眼以旋轉試戴用隱形眼鏡內表面調整符合眼睛眼角膜弧度表面上，驗配者可由記號位置得知不同使用者之眼角膜弧度及正確之中央光學區11位置，當使用者於不同角度配戴隱形眼鏡鏡片1，都可透過眨眼將鏡片1旋轉調整至與眼角膜弧度對應之位置，讓中央光學區11能正確對應使用者的瞳孔位置。And the curvature of the cornea of each user's eyeball is not the same, the curvature of the cornea of the eye will vary from person to person, and the focus points of the two eyes are not all located in the center of the two eyes, so the central optical zone 11 of the contact lens 1 The positions are not all required to be disposed at the center of the contact lens 1. In actual use, the surface of the contact lens for trial wear is marked with a mark, and the inner surface of the contact lens for rotation is adjusted to meet the eye through the blink of an eye. On the surface of the corneal curvature, the fitter can know the corneal curvature of the eye of the different users and the correct position of the central optical zone 11 by the position of the mark. When the user wears the contact lens 1 at different angles, the lens 1 can be rotated through the blink. Adjust to the position corresponding to the curvature of the cornea, so that the central optical zone 11 can correctly correspond to the user's pupil position.
請參閱第一、二圖所示，係分別為本創作第一較佳實施例之光路示意圖及平面示意圖，其中該周邊光學區12的矯正度數是較該中央光學區11為低，也就是說，欲矯正近視時，使用者眼球2在被矯正前 成像距離過短，而在戴上該鏡片1後，經該中央光學區11矯正後光線會成像在視網膜21上，而經該周邊光學區12矯正後光線會成像於該視網膜21前方之周邊失焦影像區212位置。Please refer to FIG. 1 and FIG. 2 respectively, which are schematic diagrams and plan views of the optical path of the first preferred embodiment of the present invention, wherein the correction degree of the peripheral optical zone 12 is lower than that of the central optical zone 11, that is, To correct myopia, the user's eye 2 is corrected before being corrected. The imaging distance is too short, and after the lens 1 is worn, the light corrected by the central optical zone 11 is imaged on the retina 21, and the light corrected by the peripheral optical zone 12 is imaged in the vicinity of the front of the retina 21. The focal image area 212 position.
請參閱第三圖所示，係為本創作第二較佳實施例之光路示意圖，欲矯正遠視時，使用者眼球2在被矯正前成像距離過長，而在戴上該鏡片1後，經中央光學區11矯正後光線同樣會成像在視網膜21上，而經該周邊光學區12矯正後光線會成像於該視網膜21後方之周邊失焦影像區212位置。Please refer to the third figure, which is a schematic diagram of the optical path of the second preferred embodiment of the present invention. When the distance vision is corrected, the image distance of the user's eyeball 2 is too long before being corrected, and after the lens 1 is worn, The light corrected by the central optical zone 11 is also imaged on the retina 21, and the light corrected by the peripheral optical zone 12 is imaged at the peripheral out-of-focus image area 212 behind the retina 21.
請參閱第一、二、三、四、五圖所示，係分別為本創作第一較佳實施例之光路示意圖、平面示意圖、第二較佳實施例之光路示意圖、隱形眼鏡鏡片之加工流程圖及隱形眼鏡鏡片較佳實施例之加工流程圖，由圖中所示可以清楚看出，本創作隱形眼鏡鏡片1於加工時，其檢測步驟為：Please refer to the first, second, third, fourth and fifth figures, which are respectively a schematic diagram of the optical path, a schematic plan view, a schematic diagram of the optical path of the second preferred embodiment, and a processing flow of the contact lens of the first preferred embodiment. The processing flow chart of the preferred embodiment of the contact lens and the contact lens is clearly shown in the figure. When the lens contact lens 1 of the present invention is processed, the detection steps are as follows:
(100)利用像差儀檢測使用者眼球2中視網膜21之像差並產生立體形狀之影像圖。(100) An aberrometer is used to detect an aberration of the retina 21 in the user's eye 2 and to generate a stereoscopic image.
(101)並將視網膜21立體形狀圖區分為中央清晰影像區211及圍繞該中央清晰影像區211的周邊失焦影像區212。(101) The stereoscopic view of the retina 21 is divided into a central clear image area 211 and a peripheral out-of-focus image area 212 surrounding the central clear image area 211.
(102)依據測出來的像差，透過消像差的程式計算出隱形眼鏡鏡片上的度數後，再將視網膜21立體形狀之影像圖輸入非旋轉對稱之超精密車床的控制單元中，再依照視網膜21立體形狀之影像圖由非旋轉對稱之超精密車床對隱形眼鏡鏡片1外側彎曲面121加工出使用者清晰影像之中央光學區11之位置及與使用者眼睛中視網膜21呈相反 方向且立體狀態相符的非規則形狀之周邊光學區12之位置隱形眼鏡，而周邊光學區12彎曲面121可以使通過的光線可成像於該眼球2的視網膜21前方之周邊失焦影像區212位置，或均位於該視網膜21後方之周邊失焦影像區212位置。(102) According to the measured aberration, after calculating the degree on the contact lens by the aberration program, the image of the three-dimensional shape of the retina 21 is input into the control unit of the non-rotationally symmetric ultra-precision lathe, and then The image of the three-dimensional shape of the retina 21 is formed by a non-rotationally symmetrical ultra-precision lathe on the outer curved surface 121 of the contact lens 1 to form a position of the central optical zone 11 of the user's clear image and opposite to the retina 21 in the user's eye. The peripheral optical zone 12 of the irregular shape conforming to the direction and the stereoscopic state is in contact with the contact lens, and the curved surface 121 of the peripheral optical zone 12 allows the passing light to be imaged at the position of the peripheral out-of-focus image area 212 in front of the retina 21 of the eyeball 2. Or both are located at the position of the surrounding defocus image area 212 behind the retina 21.
且該其中該步驟(102)中之隱形眼鏡為依照視網膜立體形狀之影像圖中預定位置，由非旋轉對稱之超精密車床對隱形眼鏡外側彎曲面可先加工出可供使用者配戴對位之標記，再加工出使用者清晰影像之中央光學區及周邊光學區。And wherein the contact lens in the step (102) is a predetermined position in the image map according to the three-dimensional shape of the retina, and the outer curved surface of the contact lens can be processed by the non-rotationally symmetric ultra-precision lathe to be worn by the user. The mark is used to process the central optical zone and the peripheral optical zone of the user's clear image.
惟以上所述者，僅為本創作之較佳實施例而已，當不能以此限定本創作實施之範圍，即凡依本創作申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本創作專利涵蓋之範圍內。However, the above descriptions are only preferred embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the scope of the patent application and the contents of the patent specification. All are still covered by this creation patent.
綜上所述，本創作隱形眼鏡之構造於實際應用、實施時，為確實能達到其功效及目的，故本創作誠為一實用性優異之研發，為符合新型專利之申請要件，爰依法提出申請，盼 審委早日賜准本案，以保障創作人之辛苦研發、創設，倘若 鈞局審委有任何稽疑，請不吝來函指示，創作人定當竭力配合，實感德便。In summary, the construction of the contact lens of the present invention can achieve its efficacy and purpose in practical application and implementation. Therefore, the creation is a practical and excellent research and development, and is in accordance with the application requirements of the new patent. To apply, I hope that the trial committee will grant this case as soon as possible to protect the creators' hard work in research and development, and if there is any doubt in the audit committee, please do not hesitate to give instructions, the creators will try their best to cooperate, and feel really good.
1‧‧‧鏡片1‧‧‧ lenses
10‧‧‧標記10‧‧‧ mark
11‧‧‧中央光學區11‧‧‧Central Optical Zone
12‧‧‧周邊光學區12‧‧‧ peripheral optical zone
121‧‧‧彎曲面121‧‧‧ curved surface
2‧‧‧眼球2‧‧‧ eyeball
21‧‧‧視網膜21‧‧‧ retina
211‧‧‧中央清晰影像區211‧‧‧Central clear image area
212‧‧‧周邊失焦影像區212‧‧‧After the out-of-focus image area
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104210775U TWM511049U (en) | 2015-07-03 | 2015-07-03 | Structure of contact lens |
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| TW104210775U TWM511049U (en) | 2015-07-03 | 2015-07-03 | Structure of contact lens |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI578058B (en) * | 2015-07-03 | 2017-04-11 | Method and Construction of Contact Lens | |
| CN112230433A (en) * | 2016-10-31 | 2021-01-15 | 德遁公司 | Optical system for femto projector |
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2015
- 2015-07-03 TW TW104210775U patent/TWM511049U/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI578058B (en) * | 2015-07-03 | 2017-04-11 | Method and Construction of Contact Lens | |
| CN112230433A (en) * | 2016-10-31 | 2021-01-15 | 德遁公司 | Optical system for femto projector |
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