CN106405867A - Contact lens and processing method thereof - Google Patents
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Abstract
Description
技术领域technical field
本发明涉及一种镜片及其加工方法，尤指一种符合使用者视网膜成像的镜片加工方法及其构造，用以达到延缓或是阻止视力偏差程度加深的目的。The invention relates to a lens and its processing method, especially to a lens processing method and its structure conforming to the user's retinal imaging, so as to delay or prevent the deepening of vision deviation.
背景技术Background technique
随着各种电子、电气产品的研发、创新，带给人们在日常生活及工作上许多便捷，尤其是3C电子产品的大量问世，更造成在通讯及因特网的应用的普及化，以致许多人沉浸在3C电子产品的使用领域中，长时间大量应用3C电子产品，不论是上班族、学生族群或是中老年人等，涵盖的范围也相当广泛，进而衍生出低头族的现象，也因此造就许多人的眼睛视力减损、伤害等情况日趋严重，近视人口也相对增加，为了矫正近视，必须佩戴眼镜或隐形眼镜来进行视力矫正，而镜框式眼镜与隐形眼镜是通过镜片的中央光学区、周边光学区的内、外层不同曲率的设置模式，以供外部光线清晰地投影成像于眼球的视网膜上，再通过周边光学区使光线成像于视网膜前的预定视点，即可达到于眼球视野中央提供清晰的影像，而由于周边视野的度数略有不足，进而延缓或阻止近视加深的视力矫正，而一般周边光学区则是采用较中央光学区的度数减少一预设度数的单一曲率，但是人的眼球及视网膜并不是绝对规律的形体，因此镜框式眼镜与隐形眼镜与视网膜在周边光学区位置深度的距离实际上并不会相同。因此，如何对周边光学区的成像的位置进行设计而能适用于大多数人们的眼球、达到预期的延缓或是阻止近视加深的目的，遂成为一值得研究的主题。With the research and development and innovation of various electronic and electrical products, it has brought people a lot of convenience in daily life and work, especially the advent of a large number of 3C electronic products, which has also led to the popularization of communication and Internet applications, so that many people are immersed in In the field of use of 3C electronic products, a large number of 3C electronic products have been used for a long time, whether it is office workers, students or middle-aged and elderly people, covering a wide range, which in turn leads to the phenomenon of bowing heads, and thus creates many People's eyesight loss and injury are becoming more and more serious, and the population of myopia is relatively increasing. In order to correct myopia, it is necessary to wear glasses or contact lenses for vision correction. The setting mode of different curvatures of the inner and outer layers of the area allows the external light to be clearly projected and imaged on the retina of the eye, and then the light is imaged on the predetermined viewpoint in front of the retina through the peripheral optical area, so as to provide clear vision in the center of the eyeball. The vision correction of myopia deepening is delayed or prevented due to the slightly insufficient power of the peripheral visual field, and the general peripheral optical zone adopts a single curvature that is reduced by a preset degree compared with the power of the central optical zone, but the human eyeball And the retina is not an absolutely regular shape, so the distance between frame-type glasses and contact lenses and the depth of the retina in the peripheral optical zone will actually not be the same. Therefore, how to design the imaging position of the peripheral optical zone so as to be suitable for most people's eyeballs and achieve the expected purpose of delaying or preventing the progression of myopia has become a subject worth studying.
发明内容Contents of the invention
本发明公开了一种隐形眼镜，包括一中央光学区和一围绕该中央光学区的周边光学区，其中：The present invention discloses a contact lens comprising a central optic zone and a peripheral optic zone surrounding the central optic zone, wherein:
该中央光学区用以使通过该中央光学区的光线清晰成像于使用者眼球中视网膜的中央清晰影像区上；The central optical zone is used to clearly image the light rays passing through the central optical zone on the central clear image zone of the retina in the user's eyeball;
该周边光学区与用户眼睛中视网膜呈相反方向且立体状态相符的非规则形状，围绕该中央光学区的周边光学区中的弯曲面用以使通过的光线成像于该使用者眼球的视网膜前方周边失焦影像区的位置。The peripheral optical zone and the retina in the user's eye have an irregular shape in the opposite direction and conform to the three-dimensional state, and the curved surface in the peripheral optical zone surrounding the central optical zone is used to image the passing light on the front periphery of the retina of the user's eyeball The location of the out-of-focus image area.
在本发明的一实施例中，该隐形眼镜外表面上进一步设有便于使用者识别佩戴方向的标记。In an embodiment of the present invention, the outer surface of the contact lens is further provided with a mark to facilitate the user to identify the wearing direction.
本发明还公开了另一种隐形眼镜，包括一中央光学区和一围绕该中央光学区的周边光学区，其中：The present invention also discloses another contact lens comprising a central optic zone and a peripheral optic zone surrounding the central optic zone, wherein:
该中央光学区用以使通过该中央光学区的光线清晰成像于使用者眼球中视网膜的中央清晰影像区上；The central optical zone is used to clearly image the light rays passing through the central optical zone on the central clear image zone of the retina in the user's eyeball;
该周边光学区与用户眼睛中视网膜呈相反方向且立体状态相符的非规则形状，围绕该中央光学区的周边光学区中的弯曲面用以使通过的光线成像于该使用者眼球的视网膜后方周边失焦影像区的位置。The peripheral optical zone and the retina in the user's eye have an irregular shape in the opposite direction and conform to the three-dimensional state, and the curved surface in the peripheral optical zone surrounding the central optical zone is used to image the passing light on the rear periphery of the retina of the user's eyeball The location of the out-of-focus image area.
在本发明的一实施例中，该隐形眼镜外表面上进一步设有便于使用者识别佩戴方向的标记。In an embodiment of the present invention, the outer surface of the contact lens is further provided with a mark to facilitate the user to identify the wearing direction.
本发明还公开了一种隐形眼镜加工方法，包含以下步骤：The invention also discloses a contact lens processing method, comprising the following steps:
(100)利用像差仪检测使用者眼球中视网膜的像差并产生立体形状的影像图；(100) Use an aberrometer to detect the aberration of the retina in the user's eyeball and generate a three-dimensional image;
(101)将视网膜立体形状图区分为中央清晰影像区及围绕该中央清晰影像区的周边失焦影像区；(101) dividing the retinal stereoscopic shape map into a central clear image area and a peripheral out-of-focus image area surrounding the central clear image area;
(102)根据测出来的像差，通过消像差程序计算出隐形眼镜镜片上的度数后，再将视网膜立体形状的影像图输入非旋转对称的超精密车床的控制单元中，再依照视网膜立体形状的影像图由非旋转对称的超精密车床对隐形眼镜镜片外侧弯曲面加工出使通过的光线清晰成像于使用者眼球中视网膜的中央光学区及与用户眼睛中视网膜呈相反方向且立体状态相符的非规则形状的周边光学区，周边光学区中的弯曲面能够使通过的光线成像于该眼球的视网膜前方的周边失焦影像区位置或该眼球的视网膜后方的周边失焦影像区位置。(102) According to the measured aberration, after calculating the power on the lens of the contact lens through the program of aberration elimination, the image map of the three-dimensional shape of the retina is input into the control unit of the non-rotationally symmetrical ultra-precision lathe, and then according to the three-dimensional shape of the retina The shape of the image map is processed by the non-rotational symmetric ultra-precision lathe on the outer curved surface of the contact lens lens so that the passing light is clearly imaged in the central optical zone of the retina in the user's eye and is in the opposite direction and consistent with the three-dimensional state of the retina in the user's eye The irregular shape of the peripheral optical zone, the curved surface in the peripheral optical zone can make the passing light be imaged at the position of the peripheral out-of-focus image area in front of the retina of the eyeball or the position of the peripheral out-of-focus image area behind the retina of the eyeball.
在本发明的一实施例中，在该步骤(102)中，先依照视网膜立体形状的影像图中预定位置由非旋转对称的超精密车床对隐形眼镜外侧弯曲面先加工出可供使用者佩戴对位的标记，再加工出中央光学区及周边光学区。In one embodiment of the present invention, in this step (102), the outer curved surface of the contact lens is first processed by a non-rotationally symmetrical ultra-precision lathe according to the predetermined position in the image map of the three-dimensional shape of the retina, which can be worn by the user. Alignment marks, and then process the central optical zone and peripheral optical zone.
附图说明Description of drawings
图1为本发明第一较佳实施例的光路示意图；Fig. 1 is the optical path schematic diagram of the first preferred embodiment of the present invention;
图2为本发明第一较佳实施例的平面示意图；Fig. 2 is the schematic plan view of the first preferred embodiment of the present invention;
图3为本发明第二较佳实施例的光路示意图；Fig. 3 is the optical path schematic diagram of the second preferred embodiment of the present invention;
图4为本发明提供的隐形眼镜镜片的加工流程图；Fig. 4 is the processing flowchart of the contact lens lens provided by the present invention;
图5为本发明提供的隐形眼镜镜片较佳实施例的加工流程图。Fig. 5 is a processing flowchart of a preferred embodiment of a contact lens provided by the present invention.
附图标记说明：1-镜片；10-标记；11-中央光学区；12-周边光学区；121-弯曲面；2-眼球；21-视网膜；211-中央清晰影像区；212-周边失焦影像区。Description of reference numerals: 1-lens; 10-mark; 11-central optical zone; 12-peripheral optical zone; 121-curved surface; 2-eyeball; 21-retina; 211-central clear image zone; 212-peripheral defocus Image area.
具体实施方式detailed description
为达成上述目的与功效，本发明所采用的技术手段及其构造、实施的方法等，兹绘图就本发明的较佳实施例详加说明其特征与功能如下。In order to achieve the above-mentioned purpose and effect, the technical means adopted in the present invention, its structure, and the method of implementation, etc., are hereby described in detail with respect to the preferred embodiments of the present invention. Its features and functions are as follows.
如图1、图2、图3所示，分别为本发明第一较佳实施例的光路示意图、平面示意图及第二较佳实施例的光路示意图，由图中所示可以清楚看出，本发明提供的镜片1包括中央光学区11和围绕该中央光学区11的周边光学区12，其中：As shown in Fig. 1, Fig. 2 and Fig. 3, they are respectively a schematic view of the light path of the first preferred embodiment of the present invention, a schematic plan view and a schematic view of the light path of the second preferred embodiment, as can be clearly seen from the figure, the present invention The lens 1 provided by the invention comprises a central optical zone 11 and a peripheral optical zone 12 surrounding the central optical zone 11, wherein:
该中央光学区11用以使通过该中央光学区11的光线清晰成像于使用者眼球2的视网膜21中央清晰影像区211上。The central optical zone 11 is used to make the light passing through the central optical zone 11 clearly image on the central clear image zone 211 of the retina 21 of the user's eyeball 2 .
该周边光学区12外侧表面的弯曲面121设有与使用者眼球2中视网膜21呈相反方向且立体状态相符的非规则形状的周边光学区12，该弯曲面121用以使通过的光线成像于该眼球2的视网膜21前方的周边失焦影像区212位置，或成像于该视网膜21后方的周边失焦影像区212位置。The curved surface 121 on the outer surface of the peripheral optical zone 12 is provided with an irregular peripheral optical zone 12 that is in the opposite direction and conforms to the three-dimensional state of the retina 21 in the user's eyeball 2. The curved surface 121 is used to image the passing light on the The position of the peripheral out-of-focus image area 212 in front of the retina 21 of the eyeball 2 , or the position of the peripheral out-of-focus image area 212 formed in the rear of the retina 21 .
也可进一步于隐形眼镜的镜片1外表面上设有标记10，该标记10便于用户佩戴时识别方向。It is also possible to further set a mark 10 on the outer surface of the lens 1 of the contact lens, and the mark 10 is convenient for the user to identify the direction when wearing it.
如图1、图2、图3、图4所示，分别为本发明第一较佳实施例的光路示意图、平面示意图、第二较佳实施例的光路示意图及隐形眼镜镜片的加工流程图，需要注意的是，一般使用者的眼球2的视网膜21呈不规律形体的情况下，也就是说镜片1的周边光学区12外侧表面的弯曲面121与视网膜21距离会更难预测，但是可以利用像差仪检测使用者眼球2中视网膜21的像差并产生立体形状的影像图，并将视网膜21立体形状图区分为中央清晰影像区211及围绕该中央清晰影像区211的周边失焦影像区212，依据测出来的像差，通过消像差程序计算出隐形眼镜镜片上的度数后，再将视网膜21立体形状的影像图输入非旋转对称的超精密车床的控制单元中，再依照视网膜21立体形状的影像图由非旋转对称的超精密车床对隐形眼镜外侧弯曲面121加工出使通过的光线清晰成像于使用者眼球中视网膜的中央光学区11及与用户眼睛中视网膜21呈相反方向且立体状态相符的非规则形状的周边光学区12，弯曲面121可以使通过的光线成像于该眼球2的视网膜21前方的周边失焦影像区212位置，或成像于该视网膜21后方的周边失焦影像区212位置，从而于周边视野提供相同程度的失焦影像，使成像的位置位于与视网膜21最佳距离的位置，以符合使用者眼球2中视网膜21形状，从而有效延缓或是阻止视力偏差程度加深的目的，亦可于非旋转对称的超精密车床的控制单元中，再依照视网膜21立体形状的影像图由非旋转对称的超精密车床对隐形眼镜外侧弯曲面121加工出用户佩戴标记10。As shown in Fig. 1, Fig. 2, Fig. 3, and Fig. 4, they are respectively a schematic view of the optical path of the first preferred embodiment of the present invention, a schematic plan view, a schematic view of the optical path of the second preferred embodiment and a processing flow chart of the contact lens lens, It should be noted that when the retina 21 of the eyeball 2 of a general user is in an irregular shape, that is to say, the distance between the curved surface 121 on the outer surface of the peripheral optical zone 12 of the lens 1 and the retina 21 will be more difficult to predict, but it can be used The aberrometer detects the aberration of the retina 21 in the user's eye 2 and generates a three-dimensional image map, and divides the three-dimensional shape map of the retina 21 into a central clear image area 211 and a peripheral out-of-focus image area surrounding the central clear image area 211 212. According to the measured aberration, after calculating the power on the lens of the contact lens through an aberration-elimination program, input the image map of the three-dimensional shape of the retina 21 into the control unit of the non-rotationally symmetrical ultra-precision lathe, and then according to the retina 21 The three-dimensional image image is processed by the non-rotationally symmetrical ultra-precision lathe on the outer curved surface 121 of the contact lens, so that the passing light is clearly imaged on the central optical zone 11 of the retina in the user's eye and is in the opposite direction to the retina 21 in the user's eye. The irregular shape of the peripheral optical zone 12 that conforms to the three-dimensional state, the curved surface 121 can make the passing light be imaged at the peripheral out-of-focus image area 212 in front of the retina 21 of the eyeball 2, or be imaged at the peripheral out-of-focus image area behind the retina 21 The position of the image area 212, so as to provide the same degree of out-of-focus images in the peripheral vision, so that the imaging position is located at an optimal distance from the retina 21, so as to conform to the shape of the retina 21 in the user's eyeball 2, thereby effectively delaying or preventing vision deviation For the purpose of deepening, in the control unit of the non-rotationally symmetric ultra-precision lathe, the user-wearing mark 10 can be processed on the outer curved surface 121 of the contact lens by the non-rotationally symmetric ultra-precision lathe according to the image map of the three-dimensional shape of the retina 21 .
本发明提供的镜片1在制造上是可行的，如欧洲专利号EP0872307所述，主要是使用车削法加上刀具的震动，其原理在于使刀具的震动精确地佩合车床的转轴的转动，因此在转轴旋转一圈的过程中，刀具切割的深度能够根据旋转的角度来改变，从而能制造出非对称的镜片1。The lens 1 provided by the present invention is feasible in manufacture. As described in European Patent No. EP0872307, the turning method is mainly used to add the vibration of the cutting tool. During the rotation of the rotating shaft, the cutting depth of the cutter can be changed according to the rotation angle, so that an asymmetric lens 1 can be manufactured.
需要说明的是，像差即是物体的光线成像于视网膜上需经过眼内不同组织的折射，所造成不同程度的影像差异度或清晰度。像差仪通过将光线射入视网膜，测出从视网膜反射的光程，就可以画出视网膜的形状，同时也能证明视网膜的不对称，并能测出角膜的低阶像差，如：近视、散光，及高阶像差，例如：慧星像差、三叶草像差及球面像差。It should be noted that aberration is the refraction of different tissues in the eye when the light of an object is imaged on the retina, resulting in different degrees of image difference or clarity. The aberrometer can draw the shape of the retina by shooting light into the retina and measuring the optical path reflected from the retina. It can also prove the asymmetry of the retina and measure the low-order aberrations of the cornea, such as: myopia , astigmatism, and higher-order aberrations, such as: coma aberration, trefoil aberration and spherical aberration.
每个使用者的眼球的眼角膜弧度并不相同，眼角膜弧度会因人而异，两眼的聚焦点并非都位于两眼的正中央位置，所以隐形眼镜镜片1的中央光学区11位置并非都是需要设置在隐形眼镜镜片1正中央位置处，于实际使用时，先以试戴用的隐形眼镜表面设有记号，并通过眨眼以旋转试戴用隐形眼镜内表面调整符合眼睛眼角膜弧度表面上，验配者可由记号位置得知不同用户的眼角膜弧度及正确的中央光学区11位置，当用户于不同角度佩戴隐形眼镜镜片1，都可通过眨眼将镜片1旋转调整至与眼角膜弧度对应的位置，使中央光学区11能正确对应用户的瞳孔位置。The curvature of the cornea of each user's eyeball is not the same, and the curvature of the cornea varies from person to person. The focal points of the two eyes are not all located in the exact center of the two eyes, so the position of the central optical zone 11 of the contact lens lens 1 is not the same. Both need to be set at the center of the contact lens lens 1. In actual use, first mark the surface of the contact lens for try-in, and rotate the inner surface of the contact lens for try-in to adjust to the curvature of the eye cornea by blinking. On the surface, the fitter can know the curvature of the cornea of different users and the correct position of the central optical zone 11 from the position of the mark. When the user wears the contact lens 1 at different angles, the lens 1 can be rotated and adjusted to match the cornea by blinking. The position corresponding to the arc enables the central optical zone 11 to correctly correspond to the user's pupil position.
如图1、图2所示，分别为本发明第一较佳实施例的光路示意图及平面示意图，其中该周边光学区12的矫正度数比该中央光学区11低，也就是说，欲矫正近视时，使用者眼球2在被矫正前成像距离过短，而在戴上该镜片1后，经该中央光学区11矫正后光线会成像在视网膜21上，而经该周边光学区12矫正后光线会成像于该视网膜21前方的周边失焦影像区212位置。As shown in Fig. 1 and Fig. 2, they are respectively a schematic view of the optical path and a schematic plan view 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 say, it is intended to correct myopia At this time, the imaging distance of the user's eyeball 2 is too short before being corrected, and after wearing the lens 1, the light after being corrected by the central optical zone 11 will be imaged on the retina 21, and the light after being corrected by the peripheral optical zone 12 It will be imaged at the peripheral out-of-focus image area 212 in front of the retina 21 .
如图3所示为本发明第二较佳实施例的光路示意图，欲矫正远视时，使用者眼球2在被矫正前成像距离过长，而在戴上该镜片1后，经中央光学区11矫正后光线同样会成像在视网膜21上，而经该周边光学区12矫正后光线会成像于该视网膜21后方的周边失焦影像区212位置。Figure 3 is a schematic diagram of the optical path of the second preferred embodiment of the present invention. When hyperopia is to be corrected, the imaging distance of the user's eyeball 2 is too long before being corrected. The corrected light will also be imaged on the retina 21 , and the corrected light will be imaged at the peripheral out-of-focus image area 212 behind the retina 21 .
如图1、图2、图3、图4、图5所示，分别为本发明第一较佳实施例的光路示意图、平面示意图、第二较佳实施例的光路示意图、隐形眼镜镜片的加工流程图及隐形眼镜镜片较佳实施例的加工流程图，由图中所示可以清楚看出，本发明提供的隐形眼镜镜片1于加工时，其检测步骤为：As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, and Fig. 5, they are respectively a schematic view of the optical path of the first preferred embodiment of the present invention, a schematic plan view, a schematic view of the optical path of the second preferred embodiment, and the processing of the contact lens lens The flow chart and the processing flow chart of the preferred embodiment of the contact lens lens can be clearly seen from the figure, when the contact lens lens 1 provided by the present invention is processed, its detection steps are:
(100)利用像差仪检测使用者眼球2中视网膜21的像差并产生立体形状的影像图。(100) Use an aberrometer to detect the aberration of the retina 21 in the user's eyeball 2 and generate a stereoscopic image.
(101)将视网膜21立体形状图区分为中央清晰影像区211及围绕该中央清晰影像区211的周边失焦影像区212。(101) Divide the three-dimensional shape map 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 .
(102)根据测出来的像差，通过消像差程序计算出隐形眼镜镜片上的度数后，再将视网膜21立体形状的影像图输入非旋转对称的超精密车床的控制单元中，再依照视网膜21立体形状的影像图由非旋转对称的超精密车床对隐形眼镜镜片1外侧弯曲面121加工出使通过的光线清晰成像于使用者眼球中视网膜的中央光学区11及与用户眼睛中视网膜21呈相反方向且立体状态相符的非规则形状的周边光学区12，而周边光学区12中的弯曲面121可以使通过的光线可成像于该眼球2的视网膜21前方的周边失焦影像区212位置，或成像于该视网膜21后方的周边失焦影像区212位置。(102) According to the measured aberration, after calculating the power on the lens of the contact lens through an aberration-elimination program, input the image map of the three-dimensional shape of the retina 21 into the control unit of the non-rotationally symmetrical ultra-precision lathe, and then follow the 21 The three-dimensional image image is processed by the non-rotationally symmetrical ultra-precision lathe on the outer curved surface 121 of the contact lens lens 1, so that the passing light is clearly imaged on the central optical zone 11 of the retina in the user's eye and is in the same shape as the retina 21 in the user's eye. The irregularly shaped peripheral optical zone 12 in the opposite direction and consistent with the three-dimensional state, and the curved surface 121 in the peripheral optical zone 12 can make the passing light be imaged at the peripheral out-of-focus image zone 212 in front of the retina 21 of the eyeball 2, Or imaged at the peripheral out-of-focus image area 212 behind the retina 21 .
且在该其中该步骤(102)中，先依照视网膜立体形状的影像图中预定位置，由非旋转对称的超精密车床对隐形眼镜外侧弯曲面可先加工出可供使用者佩戴对位的标记，再加工出中央光学区及周边光学区。And in this step (102), according to the predetermined position in the image map of the three-dimensional shape of the retina, the non-rotational symmetric ultra-precision lathe can first process the outer curved surface of the contact lens with a mark that can be worn by the user. , and then process the central optical zone and peripheral optical zone.
以上所述仅为本发明的较佳实施例而已，当不能以此限定本发明实施的范围，即凡依本发明权利要求范围及专利说明书内容所作的简单的等效变化与修饰，皆仍属本发明专利涵盖的范围内。The above descriptions are only preferred embodiments of the present invention, and should not limit the scope of the present invention with this, that is, all simple equivalent changes and modifications made according to the scope of the claims of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of the present invention.
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| CN113960808A (en) * | 2018-03-01 | 2022-01-21 | 依视路国际公司 | Lens element |
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