TWI682218B

TWI682218B - Method for detecting focal point of contact lens

Info

Publication number: TWI682218B
Application number: TW107119365A
Authority: TW
Inventors: 吳怡璁
Original assignee: 亨泰光學股份有限公司
Priority date: 2018-06-05
Filing date: 2018-06-05
Publication date: 2020-01-11
Also published as: TW202004269A

Abstract

本發明為有關一種隱形眼鏡之聚焦點檢測方法，係可先將具複數檢測基點之試戴用隱形眼鏡配戴於眼睛之眼角膜表面上，並利用攝像裝置來拍攝配戴有試戴用隱形眼鏡之眼睛，以取得拍攝畫面，再藉由電子裝置來從拍攝畫面中計算複數檢測基點與眼睛之角鞏膜緣間的距離，以得到該眼睛於試戴用隱形眼鏡上的聚焦點位置，便可再依據試戴用隱形眼鏡上的聚焦點位置來製作隱形眼鏡，以使隱形眼鏡表面之光心符合眼睛的視軸中心，藉此使製作出的隱形眼鏡可符合眼睛正確聚焦位置，且眼睛於檢測過程中，不會有任何的物體來遮蔽、影響視線，進而達到提升檢測聚焦點準確性之目的。 The invention relates to a method for detecting the focal point of a contact lens, which can first be used to test contact lenses with a plurality of detection base points on the surface of the cornea of the eye, and use a camera device to photograph the contact lenses worn on test lenses The eye of the glasses to obtain the shooting picture, and then the electronic device is used to calculate the distance between the complex detection base point and the corner of the eye sclera from the shooting picture to obtain the focus point position of the eye on the contact lens The contact lens can be made according to the position of the focus point on the try-on contact lens, so that the optical center of the contact lens surface conforms to the center of the eye's visual axis, thereby making the produced contact lens conform to the correct focus position of the eye, and the eye During the detection process, there will be no objects to cover and affect the line of sight, thereby achieving the purpose of improving the accuracy of the detection focus point.

Description

隱形眼鏡之聚焦點檢測方法 Method for detecting focal point of contact lens

本發明是有關於一種隱形眼鏡之聚焦點檢測方法，尤指利用攝像裝置來拍攝配戴有試戴用隱形眼鏡之眼睛，並藉由電子裝置來從拍攝畫面中計算複數檢測基點與眼睛之角鞏膜緣間的距離，以得到聚焦點位置，藉此使製作出的隱形眼鏡之光心可符合眼睛正確聚焦位置。 The invention relates to a method for detecting the focal point of a contact lens, in particular to use an imaging device to photograph an eye wearing a contact lens for trial use, and to calculate the angle between the complex detection base point and the eye from the captured image by an electronic device The distance between the sclera rim to get the position of the focus point, so that the optical center of the contact lens can meet the correct focus position of the eye.

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，也因此造成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，必須配戴眼鏡來進行視力矯正，而除了一般的鏡框式眼鏡，隱形眼鏡也是許多人用以配戴的產品，然而，眼鏡除了用以矯正近視的視力，亦可用作矯正散光或者老花等眼睛屈光不正的情況，在隱形眼鏡的鏡片上，透過鏡片的中央光學區、周邊光學區等，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，進而達到延緩或阻止近視加深的視力矯正效果。 With the development and innovation of various electronic and electrical products, people have brought many conveniences in daily life and work, especially the advent of a large number of 3C electronic products, which has caused the popularization of applications in communications and the Internet. Many people are immersed in the field of use of 3C electronic products, and a large number of applications of 3C electronic products for a long time, whether they are office workers, student groups, middle-aged and elderly people, etc., also cover a wide range, which leads to the phenomenon of low-headed people, As a result, the visual impairment and injury of many people's eyes are becoming more and more serious, and the myopia population is relatively improved. In order to correct the situation of myopia, it is necessary to wear glasses for vision correction. In addition to the general frame glasses, contact lenses are also many people. Products for wearing, however, glasses can be used to correct myopia, as well as correct astigmatism or presbyopia and other refractive errors in the eyes. On the lenses of contact lenses, they pass through the central optical zone and the periphery of the lens Optical zone, etc., with different curvature setting modes for the inner and outer layers, so that external light can be projected and imaged on the retina of the eyeball clearly, and then through the peripheral optical zone, the light can be imaged at a predetermined viewpoint in front of the retina, which can be achieved in the eyeball field of view The center provides clear images, but the peripheral vision is slightly inadequate, thereby achieving the vision correction effect of delaying or preventing the deepening of myopia.

然而，再請參閱如第七、八圖所示，目前隱形眼鏡配戴者在配製隱形眼鏡前，必須透過選擇符合使用者矯正視力度數之試戴型鏡框眼鏡，待確認使用者矯正視力的度數後，再進行製作隱形眼鏡a，以供配戴在使用者的眼睛的眼角膜表面，且使用者在眨眼以供隱形眼鏡a罩覆、服貼在眼角膜表面，但是，目前隱形眼鏡a在製作時，都是將隱形眼鏡a的光學中心位置b製作在隱形眼鏡a的正中心點(即縱向軸線與橫向軸線交叉點之中心)位置，以供隱形眼鏡a的弧度由中心點向外側延伸，製成固定弧度的隱形眼鏡a，但因為每個使用者眼睛的瞳孔軸與視軸之間的夾角(Kappa角，約介於2°~11°之間)不同，且眼睛之眼球、眼白及周圍的眼角膜，會有不同弧度的弧曲面呈現，並非每個使用者的眼角膜弧度均相同，因此，不同使用者的眼睛聚焦點位置也會有不同，並非位於二眼的正中央c處，況且，眼睛因肌肉的關係，靠近於耳朵一側的眼白高度較低，而靠近於鼻子一側則較高，所以當隱形眼鏡a配戴後會朝耳朵方向產生偏移、歪斜現象，所以若是將隱形眼鏡a的光學中心位置b皆固定製作在正中心點位置處，而非眼睛實際聚焦點位置，將會造成配戴者在配戴隱形眼鏡a時，眼睛眨眼適應隱形眼鏡a的時間將會加長，且隱形眼鏡a的光學中心位置b並非符合視線而有誤差，也將造成使用者配戴隱形眼鏡a及觀看時的不適。 However, please refer to the seventh and eighth figures. At present, the contact lens wearer must select the trial frame glasses that match the user's corrected visual strength before formulating the contact lens. To confirm the degree of corrective vision of the user After that, contact lens a is made to be worn on the surface of the cornea of the user's eye, and the user blinks to cover the contact lens a, and adhere to the surface of the cornea. However, the current contact lens a is During production, the optical center position b of the contact lens a is made at the position of the positive center point of the contact lens a (that is, the center of the intersection point of the longitudinal axis and the transverse axis), so that the curvature of the contact lens a extends from the center point to the outside , A contact lens a with a fixed curvature is made, but because the angle between the pupil axis and the visual axis of each user's eye (Kappa angle, about 2°~11°) is different, and the eyeballs and whites of the eyes And the surrounding cornea, there will be curved surfaces with different curvatures. Not every user has the same curvature of the cornea. Therefore, the position of the focal point of the eyes of different users will be different, not at the center of the two eyes c At the same time, due to the relationship between muscles, the whiteness of the eyes close to the ear is lower, and the height near the nose is higher. Therefore, when contact lens a is worn, it will shift and skew towards the ear. Therefore, if the optical center position b of the contact lens a is fixed at the position of the center point instead of the actual focus point of the eye, it will cause the wearer to blink to adapt to the contact lens a when wearing the contact lens a The time will be longer, and the optical center position b of the contact lens a is not in line with the line of sight and has an error, and it will also cause discomfort when the user wears the contact lens a and viewing.

雖有部分廠商會提供試戴用隱形眼鏡給使用者試戴，以供使用者體驗試戴用隱形眼鏡的弧度是否符合配戴者角膜的弧度，但不論是試戴用隱形眼鏡或是實際使用的隱形眼鏡，其光學中心位置均是設置在隱形眼鏡的正中央位置，對於不同使用者因Kappa角不同，即會有不同聚焦點的情況，仍無法透過試戴用隱形眼鏡予以改善，存在諸多應用上的缺失與困擾，況且在試戴隱形眼鏡時，都是由視光師透過裂隙燈觀察試戴用隱形眼鏡戴在使用者眼睛上之滑動量，而視光師僅只能以肉眼大略評估隱形眼鏡的滑動，並透過試戴用隱形眼鏡找出最符合患者角膜形狀的隱形眼鏡參數，再製成隱形眼鏡供使用者配戴，但聚焦點取得的準確性所存在誤差值也增加。 Although some manufacturers will provide try-on contact lenses for users to try on, so that users can experience whether the curvature of the contact lenses fits the curvature of the wearer’s cornea, but whether The optical center position of the contact lens or the actual contact lens is set at the center of the contact lens. For different users, due to the different Kappa angle, there will be different focus points, and it still cannot be tried. The improvement of wearing contact lenses has many deficiencies and problems in application. Moreover, when trying on contact lenses, the optometrist observes the sliding amount of the contact lenses on the user's eyes through the slit lamp. The optometrist can only roughly assess the sliding of the contact lens with the naked eye, and find out the contact lens parameters that best fit the patient's cornea shape by trying on the contact lens, and then make the contact lens for the user to wear, but the focus point is obtained accurately The error value of sex also increases.

是以，要如何設法解決上述習用之缺失與不便，即為從事此行業之相關業者所亟欲研究改善之方向所在。 Therefore, how to solve the above-mentioned lack of inconvenience and inconvenience is the direction of improvement for those engaged in this industry.

故，發明人有鑑於上述缺失，乃搜集相關資料，經由多方評估及考量，並以從事於此行業累積之多年經驗，經由不斷試作及修改，始設計出此種隱形眼鏡之聚焦點檢測方法的發明專利者。 Therefore, in view of the above-mentioned deficiencies, the inventors collected relevant data, evaluated and considered through multiple parties, and based on years of experience in this industry, through continuous trial and modification, they designed the focus point detection method of this contact lens. Invention patent holder.

本發明之主要目的乃在於該具複數檢測基點之試戴用隱形眼鏡為可先配戴於眼睛之眼角膜表面上，並利用攝像裝置來拍攝配戴有試戴用隱形眼鏡之眼睛，以取得拍攝畫面，再藉由電子裝置來從拍攝畫面中計算複數檢測基點與眼睛之角鞏膜緣間的距離，以得到該眼睛於試戴用隱形眼鏡上的聚焦點位置，便可再依據試戴用隱形眼鏡上的聚焦點位置來製作隱形眼鏡，以使隱形眼鏡表面之光心符合眼睛的視軸中心，藉此達到製作出的隱形眼鏡可符合眼睛聚焦位置之目的。 The main purpose of the present invention is that the trial contact lens with a plurality of detection base points can be first worn on the surface of the cornea of the eye, and the camera device is used to photograph the eye wearing the trial contact lens to obtain Take the picture, and then use the electronic device to calculate the distance between the complex detection base point and the limbal sclera of the eye from the shot to obtain the focus point position of the eye on the contact lens for try-on. The contact lens is made at the focus point position to make the contact lens so that the optical center of the surface of the contact lens conforms to the center of the eye's visual axis, thereby achieving the purpose that the produced contact lens can meet the focus position of the eye.

本發明之次要目的乃在於該試戴用隱形眼鏡之複數檢測基點為設置於試戴用隱形眼鏡邊緣處而不影響眼睛觀看視線，所以試戴用隱形眼鏡中心處即不會發生物體來遮蔽、影響視線之情形，進而可供使用者確實觀看到外部環境，藉此達到提升檢測到聚焦點的準確性之目的。 The secondary object of the present invention is the complex detection base of the contact lens The point is that it is set at the edge of the contact lens for try-on without affecting the eye's line of sight. Therefore, the center of the contact lens for try-on will not block or affect the line of sight, so that the user can actually see the external environment. In this way, the accuracy of detecting the focus point is improved.

本發明之再一目的乃在於該試戴用隱形眼鏡表面為可利用投影裝置來成像出十字座標標記，以使攝像裝置所拍攝出的拍攝畫面會顯示有十字座標標記，便可輔助電子裝置計算出距離量，且檢測人員亦可透過觀看拍攝畫面中的十字座標標記來驗算電子裝置所計算出的距離量是否正確，進而達到提升計算出聚焦點位置的準確度之目的。 Another object of the present invention is that the surface of the contact lens for trial use can be imaged with a cross-coordinate mark by a projection device, so that the shooting screen shot by the camera device will display a cross-coordinate mark, which can assist the electronic device in calculating The distance is measured, and the inspector can also check whether the distance calculated by the electronic device is correct by looking at the cross coordinate marks in the shooting screen, so as to improve the accuracy of calculating the position of the focus point.

本發明之又一目的乃在於該試戴用隱形眼鏡表面為可利用投影裝置來成像出十字座標標記，所以該試戴用隱形眼鏡表面上即不須直接設置十字座標軸線，便可適用各種型式的隱形眼鏡，且用於檢測完聚焦點後，可再次提供給其它用途使用，以達到可重覆使用及環保之目的。 Another object of the present invention is that the surface of the contact lens for trial use can be imaged with a cross coordinate mark by a projection device, so the surface of the contact lens for trial use can be applied to various types without directly setting the axis of the cross coordinate The contact lens is used to detect the focus point, and can be used again for other purposes, so as to achieve the purpose of repeated use and environmental protection.

1‧‧‧試戴用隱形眼鏡 1‧‧‧Try on contact lenses

11‧‧‧檢測基點 11‧‧‧ detection base point

12‧‧‧聚焦點 12‧‧‧ Focus

2‧‧‧眼睛 2‧‧‧Eye

21‧‧‧眼角膜 21‧‧‧Cornea

22‧‧‧角鞏膜緣 22‧‧‧Cornea sclera

23‧‧‧視軸中心 23‧‧‧ sight axis center

24‧‧‧視網膜 24‧‧‧Retina

3‧‧‧攝像裝置 3‧‧‧Camera device

31‧‧‧拍攝畫面 31‧‧‧ shooting screen

4‧‧‧電子裝置 4‧‧‧Electronic device

5‧‧‧隱形眼鏡 5‧‧‧Contact lens

51‧‧‧光心 51‧‧‧Lightheart

6‧‧‧投影裝置 6‧‧‧Projection device

61‧‧‧十字座標標記 61‧‧‧ Cross coordinate mark

7‧‧‧發光源 7‧‧‧Light source

a‧‧‧隱形眼鏡 a‧‧‧Contact lens

b‧‧‧光學中心位置 b‧‧‧Optical center position

c‧‧‧二眼的正中央 c‧‧‧The center of the two eyes

第一圖係為本發明之流程圖。 The first figure is a flowchart of the present invention.

第二圖係為本發明之正視平面圖。 The second figure is a front plan view of the present invention.

第三圖係為本發明試戴用隱形眼鏡配戴後之側視圖。 The third figure is a side view of the contact lens of the present invention after wearing.

第四圖係為本發明攝像裝置及電子裝置之使用狀態圖。 The fourth figure is a diagram of the use state of the imaging device and the electronic device of the present invention.

第五圖係為本發明攝像裝置拍攝試戴用隱形眼鏡之拍攝畫面示意圖。 The fifth figure is a schematic diagram of a shooting screen of a contact lens for trial wearing by the imaging device of the present invention.

第六圖係為本發明製作出隱形眼鏡配戴後之側視圖。 The sixth figure is a side view of the contact lens after being made by the present invention.

第七圖係為習知試戴用隱形眼鏡之正視平面圖。 The seventh figure is a plan view of the front view of conventional contact lenses.

第八圖係為習知試戴隱形眼鏡檢測之示意圖。 The eighth figure is a schematic diagram of conventional contact lens test.

為達成上述目的及功效，本發明所採用之技術手段及其構造，茲繪圖就本發明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-mentioned objectives and effects, the technical means and structure adopted by the present invention, the drawings and details of the preferred embodiments of the present invention are described in detail below. Their features and functions are as follows, so that they can fully understand.

請參閱第一、二、三、四、五、六圖所示，係為本發明之流程圖、正視平面圖、試戴用隱形眼鏡配戴後之側視圖、攝像裝置及電子裝置之使用狀態圖、攝像裝置拍攝試戴用隱形眼鏡之拍攝畫面示意圖及製作出隱形眼鏡配戴後之側視圖，由圖中可清楚看出，本發明之試戴用隱形眼鏡1於進行檢測時，係可依據下列之檢測步驟執行： Please refer to the first, second, third, fourth, fifth and sixth figures, which are the flow chart of the present invention, the front plan view, the side view after the trial contact lens is worn, the use state diagram of the camera device and the electronic device 1. The schematic diagram of the shooting screen of the contact lens for trial use by the camera device and the side view after the contact lens is made. It can be clearly seen from the figure that the contact lens 1 for trial use of the present invention can be based on The following detection steps are performed:

(A01)係可先將具複數檢測基點11之試戴用隱形眼鏡1配戴於眼睛2之眼角膜21表面。 (A01) First, the contact lens 1 for trial use with a plurality of detection base points 11 can be worn on the surface of the cornea 21 of the eye 2.

(A02)並利用攝像裝置3來拍攝配戴有試戴用隱形眼鏡1之眼睛2，以取得拍攝畫面31。 (A02) The camera device 3 is used to photograph the eye 2 wearing the contact lens 1 for trial use to obtain a photographing screen 31.

(A03)再藉由電子裝置4來從拍攝畫面31中計算複數檢測基點11與眼睛2之角鞏膜緣22間的距離，以計算出該眼睛2於試戴用隱形眼鏡1上的聚焦點12位置。 (A03) The electronic device 4 is used to calculate the distance between the complex detection base point 11 and the corneal sclera 22 of the eye 2 from the shooting screen 31 to calculate the focus point 12 of the eye 2 on the contact lens 1 for trial use position.

(A04)便可依據試戴用隱形眼鏡1上的聚焦點12位置來製作隱形眼鏡5，以使隱形眼鏡5表面之光心51符合眼睛2的視軸中心23。 (A04) The contact lens 5 can be made according to the position of the focus point 12 on the contact lens 1 for trial use, so that the optical center 51 on the surface of the contact lens 5 conforms to the center 23 of the visual axis of the eye 2.

上述步驟(A01)中之試戴用隱形眼鏡1的複數檢測基點11為可設置相鄰於試戴用隱形眼鏡1邊緣處，且設置位置以不影響眼睛2觀看的視線為基準，而該複數檢測基點11較佳為四點，即可設置於試戴用隱形眼鏡1表面上X、Y軸方向的四軸向(即分別為0°、90°、180°及270°角度方向)位置處，但於實際應用時，其複數檢測基點11亦可設置於X、Y軸的其中至少三點位置處，或者是可於試戴用隱形眼鏡1邊緣處任意位置處設置二、三、四、五、六個或多個等至少二個以上之複數檢測基點11，其試戴用隱形眼鏡1邊緣處至少需設置二個檢測基點11，才能透過二個檢測基點11與眼睛2之角鞏膜緣22間的相對距離，來計算出眼睛2於試戴用隱形眼鏡1上的聚焦點12位置。 The complex detection base point 11 of the contact lens 1 for trial use in the above step (A01) can be set adjacent to the edge of the contact lens 1 for trial use, and the setting position is based on the line of sight that does not affect the viewing of the eye 2 and the complex number The detection base point 11 is preferably four points, which can be set at The position of the four axes of the X and Y axis directions on the surface of the contact lens 1 for trial use (that is, the angle directions of 0°, 90°, 180°, and 270°, respectively), but in practical applications, the complex detection base point 11 is also It can be set at at least three points on the X and Y axes, or at least two or more of two, three, four, five, six or more at any position on the edge of the contact lens 1 for try-on For multiple detection base points 11, at least two detection base points 11 need to be set at the edge of the contact lens 1 for trial use, in order to calculate the eye 2 through the relative distance between the two detection base points 11 and the corneal sclera 22 of the eye 2 The position of the focus point 12 on the contact lens 1 to be worn.

且上述步驟(A01)後為可進一步配合下列之步驟執行： And after the above step (A01), it can be further executed in accordance with the following steps:

利用投影裝置6來於試戴用隱形眼鏡1表面上投影成像出十字座標標記61，其十字座標標記61的四端為通過試戴用隱形眼鏡1上的複數檢測基點11。 The projection device 6 is used to project and image a cross coordinate mark 61 on the surface of the contact lens 1 for trial use. The four ends of the cross coordinate mark 61 are the base points 11 for detecting the complex number on the contact lens 1 for trial use.

由於，上述試戴用隱形眼鏡1表面上成像有十字座標標記61，當步驟(A02)中的攝像裝置3進行拍攝後，其所拍攝出的拍攝畫面31即會將十字座標標記61一併拍入顯示，以供步驟(A03)中的電子裝置4可利用十字座標標記61來輔助計算出距離量，且檢測人員亦可透過觀看拍攝畫面31中的十字座標標記61來驗算電子裝置4所計算出的距離量是否正確，進而可提升計算出聚焦點12位置的準確度；而且，該十字座標標記61是透過投影的方式成像於試戴用隱形眼鏡1表面上，所以該試戴用隱形眼鏡1表面上則不須直接設置十字座標軸線，從而可適用各種型式的隱形眼鏡，且因沒有直接設置十字座標軸線，所以試戴用隱形眼鏡1用於檢測完聚焦點12後，便可再次提供給其它用途使用，以達到可重覆使用及環保之效果。 Since the cross-contact mark 61 is imaged on the surface of the contact lens 1 for trial use, when the camera device 3 in step (A02) takes a picture, the captured frame 31 will take the cross-coordinate mark 61 together. Into the display, for the electronic device 4 in step (A03) can use the cross coordinate mark 61 to assist in calculating the distance, and the inspector can also verify the calculation of the electronic device 4 by looking at the cross coordinate mark 61 in the shooting screen 31 Whether the distance is correct, which can improve the accuracy of calculating the position of the focus point 12; moreover, the cross coordinate mark 61 is projected onto the surface of the contact lens 1 for trial use, so the contact lens for trial use 1 On the surface, it is not necessary to directly set the cross coordinate axis, so it can be applied to various types of contact lenses, and because the cross coordinate axis is not directly set, the contact lens 1 for trial use is used to detect the focus point 12 and can be provided again. For other uses, In order to achieve the effect of repeated use and environmental protection.

況且，上述步驟(A01)後為可進一步配合下列之步驟執行： Moreover, the above steps (A01) can be further executed in accordance with the following steps:

(A011)利用發光源7(如：裂隙燈)來照射眼睛2，該試戴用隱形眼鏡1表面上會反射出發光源的聚焦投影成像，而該聚焦投影成像即為試戴用隱形眼鏡1之聚焦點12位置。 (A011) illuminate the eye 2 with a luminous source 7 (such as a slit lamp), the surface of the contact lens 1 for trial use reflects the focused projection image of the starting light source, and the focused projection image is the contact lens 1 for trial use 12 points of focus.

其因試戴用隱形眼鏡1為可利用發光源7來使表面顯現出聚焦投影成像，其檢測人員即可透過此聚焦投影成像來輔助判斷聚焦點12的位置，並可再配合步驟(A01)的十字座標標記61來進一步計算出距離量，以可提升聚焦點12取得的速度及準確度。 Because the contact lens 1 for trial use can use the light emitting source 7 to make the surface appear focused projection imaging, the inspector can use this focused projection imaging to assist in determining the position of the focus point 12, and can cooperate with the step (A01) The cross coordinate mark 61 is used to further calculate the distance to improve the speed and accuracy of the focus point 12.

再者，上述步驟(A02)中之攝像裝置3可為數位相機或攝影機等具拍攝功能之儀器，且透過攝像裝置3所拍攝之拍攝畫面31可為照片或影片等，而拍攝畫面31較佳可為影片，即可藉由影片式的拍攝畫面31來得知試戴用隱形眼鏡1於眼睛2上的滑動方向、滑動速度、滑動距離或轉動量等資訊，便可利用前述的資訊來使製作出的隱形眼鏡5之光心51可更符合眼睛2的視軸中心23位置。 Furthermore, the camera device 3 in the above step (A02) may be a digital camera or a camera, etc. with a shooting function, and the shooting screen 31 shot through the camera device 3 may be a photo or a video, etc., and the shooting screen 31 is preferred It can be a video, that is, the film-like shooting screen 31 can be used to know the sliding direction, sliding speed, sliding distance or amount of rotation of the contact lens 1 on the eye 2, and the above information can be used to make the production The optical center 51 of the contact lens 5 can be more in line with the position of the center 23 of the visual axis of the eye 2.

且上述步驟(A02)中之攝像裝置3拍攝取得拍攝畫面31後，其因試戴用隱形眼鏡1表面上設有複數檢測基點11，所以即可從拍攝畫面31中顯示的複數檢測基點11來得知聚焦前、後的轉動量，進而可利用此轉動量來得知試戴用隱形眼鏡1於聚焦的過程中是否有產生旋轉之現象。 Moreover, after the imaging device 3 in the above step (A02) photographs and obtains the shooting screen 31, since the contact lens 1 for trial use is provided with a complex detection base point 11, it can be obtained from the complex detection base point 11 displayed on the shooting screen 31 Knowing the amount of rotation before and after focusing, and then using this amount of rotation to know whether there is a phenomenon that rotation occurs during the focusing of the contact lens 1 for trying on.

況且，上述步驟(A03)中之電子裝置4可為桌上性電腦、筆記型電腦、工業電腦或其它具運算功能之電子裝置4，且該電子裝置4為與攝像裝置3形成電性連接，其攝像裝置3即可將拍攝畫面31傳輸至電子裝置4，並利用電子裝置4內部的預設運算系統來計算試戴用隱形眼鏡1之複數檢測基點11與眼睛2之角鞏膜緣22間的距離〔如：

、

；其中該A、B、C、D點座標分別為(x₁、0)、(x₂、0)、(0、y₁)、(0、y₂)〕，以藉由複數檢測基點11與眼睛2之角鞏膜緣22間的相對距離差來得知試戴用隱形眼鏡1於眼睛2之眼角膜21上的偏移距離，例如；位於X軸二端的二檢測基點11與角鞏膜緣22的距離差

，即是試戴用隱形眼鏡1於X軸方向上的偏移量，而位於Y軸二端的二檢測基點11與角鞏膜緣22的距離差

，則是試戴用隱形眼鏡1於Y軸方向上的偏移量；至於試戴用隱形眼鏡1之複數檢測基點11與眼睛2之角鞏膜緣22間的距離為可透過二點間距離公式〔即

、

〕來計算得到，且計算出的聚焦點12與X、Y軸的距離即為

、

。 Moreover, the electronic device 4 in the above step (A03) may be a desktop computer, a notebook computer, an industrial computer, or other electronic device 4 with a computing function, and the electronic device 4 is electrically connected to the camera device 3, The imaging device 3 can transmit the captured image 31 to the electronic device 4 and use the preset computing system inside the electronic device 4 to calculate the complex detection base point 11 of the contact lens 1 and the corneal sclera 22 of the eye 2 Distance [eg:

,

; Where the coordinates of points A, B, C, and D are (x ₁ , 0), (x ₂ , 0), (0, y ₁ ), (0, y ₂ )] to detect the base point 11 by a complex number The relative distance difference from the corneal scleral rim 22 of the eye 2 to know the offset distance of the contact lens 1 on the cornea 21 of the eye 2, for example; the two detection base points 11 at the two ends of the X axis and the corneal sclera rim 22 Distance difference

, That is, the offset of the contact lens 1 in the X-axis direction, and the difference between the distance between the two detection base points 11 at the two ends of the Y-axis and the corneal sclera 22

Is the offset of the contact lens 1 in the Y-axis direction for the try-on contact; the distance between the complex detection base point 11 of the contact lens 1 for try-on and the corneal sclera 22 of the eye 2 is the distance formula between two points 〔which is

,

〕 To calculate, and the distance between the calculated focus point 12 and the X, Y axis is

,

.

而待上述步驟(A03)之試戴用隱形眼鏡1上計算出聚焦點12後，為可進一步依據下列之步驟執行： After the focus point 12 is calculated on the contact lens 1 in the above step (A03), it can be further executed according to the following steps:

(A031)位於試戴用隱形眼鏡1之聚焦點12位置處製作可供辨識之標記。 (A031) Make a recognizable mark at the position of the focus point 12 of the contact lens 1 for try-on.

而上述試戴用隱形眼鏡1之聚焦點12位置處製作可供辨識之標記後，其步驟(A04)中便可利用此標記來輕易辨識出聚焦點12的位置，以方便後續製作隱形眼鏡5。 After the above-mentioned try-on contact lens 1 is made with a recognizable mark at the position of the focus point 12, the mark can be used to easily identify the position of the focus point 12 in step (A04), so as to facilitate the subsequent production of the contact lens 5 .

另外，上述步驟(A04)中試戴用隱形眼鏡1的預設光學中心將從試戴用隱形眼鏡1原先的幾何中心(即試戴用隱形眼鏡1曲面中心處)移到聚焦點12位置處，以使後續製作出隱形眼鏡5的光心51在配戴時可確實符合眼睛2的視軸中心23。 In addition, the preset light of the contact lens 1 for trial wearing in the above step (A04) The learning center will move from the original geometric center of the contact lens 1 for trial use (that is, the center of the curved surface of the contact lens 1 for trial use) to the position of the focus point 12, so that the optical center 51 of the contact lens 5 that is subsequently produced when worn It can indeed conform to the visual axis center 23 of the eye 2.

本發明實際供使用者於配製隱形眼鏡5前作檢測作業時，係可先選擇適合度數之試戴用隱形眼鏡1，並將此試戴用隱形眼鏡1配戴於眼睛2之眼角膜21表面上，而使用者可透過眨眼來調整試戴用隱形眼鏡1，以使試戴用隱形眼鏡1罩覆符合於眼角膜21表面上，且試戴用隱形眼鏡1配戴於眼睛2上後，即可利用攝像裝置3來拍攝配戴有試戴用隱形眼鏡1之眼睛2，以取得拍攝畫面31，此時，該攝像裝置3會將拍攝畫面31傳輸至電子裝置4，且該電子裝置4便可藉由二點間距離公式來從拍攝畫面31中計算複數檢測基點11與眼睛2之角鞏膜緣22間的距離〔如圖五中A點(x₁、0)至B點(x₂、0)的距離，即為

，而C點(0、y₁)至D點(0、y₂)的距離，則為

〕，以得知與試戴用隱形眼鏡1配戴後的偏移量，即可利用偏移量來得知出該眼睛2實際於試戴用隱形眼鏡1上的聚焦點12位置(其聚焦點12即會符合眼睛2的視軸中心23)，便可再依據試戴用隱形眼鏡1上的聚焦點12位置來製作隱形眼鏡5，以使隱形眼鏡5表面之光心51符合眼睛2的視軸中心23，而製作出的隱形眼鏡5即可縮短配戴隱形眼鏡5時之視覺暫時模糊時間，且眼睛2可以快速適應隱形眼鏡5，而能使視覺影像正確聚焦於眼睛2之視網膜24上不易發生失焦之情形，藉此可提供使用者配戴隱形眼鏡5後，確實得到清晰的視覺影像且避免觀看上的不適之效果，從而達到提升隱形眼鏡5驗配準確度之效用。 The present invention is actually for the user to select the contact lens 1 of the appropriate degree before fitting the contact lens 5 for testing, and then fit the contact lens 1 for trial on the surface of the cornea 21 of the eye 2 , And the user can adjust the try-on contact lens 1 by blinking, so that the try-on contact lens 1 covers the surface of the cornea 21, and after the try-on contact lens 1 is worn on the eye 2, ie The camera device 3 can be used to photograph the eyes 2 wearing the contact lens 1 for trial use to obtain the shooting screen 31. At this time, the camera device 3 will transmit the shooting screen 31 to the electronic device 4, and the electronic device 4 will The distance between the complex detection base point 11 and the corneal sclera 22 of the eye 2 can be calculated from the shooting screen 31 by the formula between the two points (as shown in Figure 5 from point A (x ₁ , 0) to point B (x ₂ , 0) The distance is

, And the distance from point C (0, y ₁ ) to point D (0, y ₂ ) is

〕, by knowing the offset after wearing the contact lens 1 for trial use, the offset can be used to know the position of the focus point 12 (the focus point of the eye 2 actually on the contact lens 1 for trial use) 12 will match the center of the visual axis of the eye 2 23), and then the contact lens 5 can be made according to the position of the focus point 12 on the contact lens 1 for trial use, so that the optical center 51 of the surface of the contact lens 5 matches the vision of the eye 2 Axis center 23, and the produced contact lens 5 can shorten the temporary blurring time of the vision when wearing the contact lens 5, and the eye 2 can quickly adapt to the contact lens 5, and the visual image can be correctly focused on the retina 24 of the eye 2 The out-of-focus situation is not prone to occur, thereby providing the user with the effect of clearly obtaining clear visual images and avoiding viewing discomfort after wearing the contact lens 5, thereby achieving the effect of improving the accuracy of contact lens 5 fitting.

然而，該眼睛2配戴有試戴用隱形眼鏡1後，其因複數檢測基點11為設置於試戴用隱形眼鏡1邊緣處而不影響觀看視線，所以試戴用隱形眼鏡1中心處即不會有物體來遮蔽、影響視線，進而可供使用者確實觀看到外部環境，藉此可提升檢測到聚焦點12的準確性。 However, since the eye 2 is fitted with the contact lens 1 for trial use, the complex detection base point 11 is set at the edge of the contact lens 1 for trial use without affecting the viewing line of sight, so the center of the contact lens 1 for trial use is not There will be objects to cover and affect the line of sight, so that the user can actually see the external environment, thereby improving the accuracy of detecting the focus point 12.

本發明為具有下列之優點： The present invention has the following advantages:

(一)該試戴用隱形眼鏡1配戴於眼睛2的眼角膜21表面上後，可利用攝像裝置3來取得拍攝畫面31，再藉由電子裝置4來從拍攝畫面31中計算複數檢測基點11與眼睛2之角鞏膜緣22間的距離，以得到出該眼睛2於試戴用隱形眼鏡1上的聚焦點12位置，進而依據聚焦點12位置來製作隱形眼鏡5，以使隱形眼鏡5表面之光心51符合眼睛2的視軸中心23，藉此可透過測量眼睛2的視軸中心23(第五圖中的聚焦點12)、眼角膜21的中心點及試戴用隱形眼鏡1的光心三點間距離關係的方式來使視覺影像正確聚焦於眼睛2之視網膜24上不易發生失焦之情形，以達到避免觀看上的不適之效用。 (1) After the try-on contact lens 1 is worn on the surface of the cornea 21 of the eye 2, the imaging device 31 can be used to obtain the imaging screen 31, and then the electronic device 4 can calculate the complex detection base point from the imaging screen 31 11 and the distance between the angle and scleral rim 22 of the eye 2 to obtain the position of the focus point 12 of the eye 2 on the contact lens 1 for trial use, and then to make the contact lens 5 according to the position of the focus point 12 to make the contact lens 5 The optical center 51 of the surface conforms to the center of the visual axis 23 of the eye 2, whereby the center of the visual axis 23 of the eye 2 (focus point 12 in the fifth figure), the center point of the cornea 21 and the contact lens 1 for try-on can be measured The distance relationship between the three points of the optical center allows the visual image to be correctly focused on the retina 24 of the eye 2 so that defocusing is unlikely to occur, so as to achieve the effect of avoiding discomfort in viewing.

(二)該試戴用隱形眼鏡1之複數檢測基點11為設置於試戴用隱形眼鏡1邊緣處，而不會影響眼睛2觀看視線，所以試戴用隱形眼鏡1中心處即不會產生物體來遮蔽、影響視線之情形，進而可供使用者確實觀看到外部環境，藉此可提升檢測到聚焦點12的準確性。 (2) The complex detection base point 11 of the contact lens 1 for trial use is set at the edge of the contact lens 1 for trial use, without affecting the line of sight of the eyes 2, so no object will be generated at the center of the contact lens 1 for trial use To shield and affect the line of sight, so that the user can actually see the external environment, thereby improving the accuracy of detecting the focus point 12.

(三)該試戴用隱形眼鏡1表面為可利用投影裝置6來成像出十字座標標記61，以使攝像裝置3所拍攝出的拍攝畫面31會顯示有十字座標標記61，便可輔助電子裝置4計算出距離量，且檢測人員亦可透過觀看拍攝畫面31中的十字座標標記61來驗算電子裝置4所計算出的距離量是否正確，進而達到提升計算出聚焦點12位置的準確度之功效。 (3) The surface of the contact lens 1 for trial use is capable of imaging the cross coordinate mark 61 by the projection device 6 so that the shooting screen 31 captured by the camera 3 will display the cross coordinate mark 61 to assist the electronic device 4 Calculate the distance, and the inspector can also check the calculation of the electronic device 4 by looking at the cross coordinate mark 61 in the shooting screen 31 Whether the distance is correct or not, so as to improve the accuracy of calculating the position of the focus point 12.

(四)該試戴用隱形眼鏡1表面為可利用投影裝置6來成像出十字座標標記61，所以該試戴用隱形眼鏡1表面上即不須直接設置十字座標軸線，便可適用各種型式的隱形眼鏡，且用於檢測完聚焦點12後，可再次提供給其它用途使用，以達到可重覆使用及環保之效果。 (4) The surface of the contact lens 1 for trial use can be imaged with the cross coordinate mark 61 by the projection device 6, so the surface of the contact lens 1 for trial use can be applied to various types without directly setting the axis of the cross coordinate Contact lenses, and used to detect the focus point 12, can be used again for other purposes to achieve repeatable use and environmental protection.

上述詳細說明為針對本發明一種較佳之可行實施例說明而已，惟該實施例並非用以限定本發明之申請專利範圍，凡其它未脫離本發明所揭示之技藝精神下所完成之均等變化與修飾變更，均應包含於本發明所涵蓋之專利範圍中。 The above detailed description is for the description of a preferred feasible embodiment of the present invention, but this embodiment is not intended to limit the scope of the patent application of the present invention. Any other changes and modifications made without departing from the spirit of the art disclosed by the present invention Changes should be included in the scope of patents covered by the present invention.

綜上所述，本發明上述隱形眼鏡之聚焦點檢測方法於實際應用、實施時，為確實能達到其功效及目的，故本發明誠為一實用性優異之研發，為符合發明專利之申請要件，爰依法提出申請，盼審委早日賜准本案，以保障發明人之辛苦研發、創設，倘若鈞局審委有任何稽疑，請不吝來函指示，發明人定當竭力配合，實感德便。 In summary, when the focus point detection method of the above-mentioned contact lens of the present invention is actually applied and implemented, in order to indeed achieve its efficacy and purpose, the present invention is a research and development with excellent practicability, which is in accordance with the application requirements of the invention patent I have filed an application in accordance with the law, and I hope the review committee will grant the case as soon as possible to protect the inventor's hard research and development and creation. If the review committee of the Jun Bureau has any doubts, please send me a letter and give instructions. The inventor will try his best to cooperate.

Claims

一種隱形眼鏡之聚焦點檢測方法，係依據下列之檢測步驟執行：(A01)係先將具複數檢測基點之試戴用隱形眼鏡配戴於眼睛之眼角膜表面，利用投影裝置來於試戴用隱形眼鏡表面上投影成像出十字座標標記，其十字座標標記的四端為通過試戴用隱形眼鏡上的複數檢測基點；(A02)並利用攝像裝置來拍攝配戴有試戴用隱形眼鏡之眼睛，以取得拍攝畫面，攝像裝置之拍攝畫面為影片，藉由影片式的拍攝畫面來得知試戴用隱形眼鏡於眼睛上的滑動方向、滑動速度、滑動距離或轉動量；(A03)再藉由電子裝置來從拍攝畫面中計算複數檢測基點與眼睛之角鞏膜緣間的距離，以計算出該眼睛於試戴用隱形眼鏡上的聚焦點位置；(A04)便可依據試戴用隱形眼鏡上的聚焦點位置來製作隱形眼鏡，以使隱形眼鏡表面之光心符合眼睛的視軸中心。 A method for detecting the focal point of a contact lens is performed according to the following detection steps: (A01) is to first try on contact lenses with a plurality of detection base points on the corneal surface of the eye, and use a projection device for trial use A cross-coordinate mark is projected and imaged on the surface of the contact lens, and the four ends of the cross-coordinate mark are the plural detection base points on the contact lens for try-on; (A02) and the camera device is used to photograph the eye wearing the contact lens for try-on , In order to obtain the shooting screen, the shooting screen of the camera device is a video, and the sliding direction, the sliding speed, the sliding distance or the amount of rotation of the contact lens on the eye by the video-style shooting screen; (A03) and then The electronic device calculates the distance between the complex detection base point and the edge of the sclera of the eye from the captured image to calculate the focus point position of the eye on the contact lens for try-on; (A04) can be based on the contact lens for try-on The focal point position is used to make the contact lens, so that the optical center of the contact lens surface meets the center of the eye's visual axis.

如申請專利範圍第1項所述隱形眼鏡之聚焦點檢測方法，其中該步驟(A01)中之試戴用隱形眼鏡的複數檢測基點為設置相鄰於試戴用隱形眼鏡邊緣處，且設置位置以不影響眼睛觀看的視線為基準，而試戴用隱形眼鏡為位於邊緣處任意位置處設置至少二個以上之複數檢測基點。 The method for detecting the focal point of a contact lens as described in item 1 of the patent application scope, wherein the complex detection base point of the contact lens for try-on in this step (A01) is set adjacent to the edge of the contact lens for try-on and the location Based on the line of sight that does not affect the viewing of the eye, the contact lens for try-on is to set at least two or more complex detection base points at any position on the edge.

如申請專利範圍第1項所述隱形眼鏡之聚焦點檢測方法，其中該步驟(A01)中之試戴用隱形眼鏡為具有四個點檢測基點，且設置於試戴用隱形眼鏡X、Y軸方向的四軸向(即分別為0°、90°、180°及270°角度方向)位置處。 The focus point detection method of contact lens as described in item 1 of the patent application scope, wherein the contact lens for try-on in this step (A01) has four point detection base points and is set in the trial The position of the four axes of the X and Y axis directions of the contact lens (ie, the angle directions of 0°, 90°, 180°, and 270°, respectively).

如申請專利範圍第1項所述隱形眼鏡之聚焦點檢測方法，其中該步驟(A01)後為執行下列之步驟：(A011)利用發光源來照射眼睛，該試戴用隱形眼鏡表面上會反射出發光源的聚焦投影成像，而該聚焦投影成像即為試戴用隱形眼鏡之聚焦點位置。 The focus point detection method of contact lens as described in item 1 of the patent application scope, wherein after this step (A01), the following steps are performed: (A011) illuminate the eye with a light source, and the surface of the contact lens for trial use will be reflected Focus projection imaging of the starting light source, and the focus projection imaging is the focus point position of the contact lens for try-on.

如申請專利範圍第1項所述隱形眼鏡之聚焦點檢測方法，其中該步驟(A02)中之攝像裝置為數位相機或攝影機，且該攝像裝置所拍攝之拍攝畫面為影片。 The method for detecting the focal point of a contact lens as described in item 1 of the scope of the patent application, wherein the camera device in this step (A02) is a digital camera or a video camera, and the shooting picture taken by the camera device is a movie.

如申請專利範圍第1項所述隱形眼鏡之聚焦點檢測方法，其中該步驟(A03)中之電子裝置為與攝像裝置形成電性連接，其攝像裝置為可將拍攝畫面傳輸至電子裝置，並利用電子裝置來計算試戴用隱形眼鏡之複數檢測基點與眼睛之角鞏膜緣間的距離，以藉由複數檢測基點與眼睛之角鞏膜緣間的相對距離差來得知試戴用隱形眼鏡於眼睛之眼角膜上的偏移距離。 The method for detecting the focal point of a contact lens as described in item 1 of the patent application scope, wherein the electronic device in this step (A03) is electrically connected to the camera device, and the camera device is capable of transmitting the captured image to the electronic device, and The electronic device is used to calculate the distance between the complex detection base point of the try-on contact lens and the limbus of the cornea, so as to know the relative distance difference between the base point and the corneal sclera of the eye The offset distance on the cornea of the eye.

如申請專利範圍第1項所述隱形眼鏡之聚焦點檢測方法，其中該步驟(A03)中試戴用隱形眼鏡之複數檢測基點與眼睛之角鞏膜緣間的距離為透過二點間距離公式計算得到。 The focus point detection method for contact lenses as described in item 1 of the patent application scope, in which the distance between the base point of the complex detection of the contact lens used in the step (A03) and the corneal sclera of the eye is calculated by the formula between the two points get.

如申請專利範圍第1項所述隱形眼鏡之聚焦點檢測方法，其中該步驟(A03)之試戴用隱形眼鏡上計算出聚焦點後，為依據下列之步驟執行： (A031)位於試戴用隱形眼鏡之聚焦點位置處製作供辨識之標記。 The focus point detection method of the contact lens as described in item 1 of the patent application scope, wherein after the focus point is calculated on the try-on contact lens of this step (A03), it is executed according to the following steps: (A031) Make a mark for identification at the focus point of the contact lens for try-on.