TWM511049U - Structure of contact lens - Google Patents

Description

Contact lens construction

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.

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.

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.

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.

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‧‧‧ lenses

10‧‧‧ mark

11‧‧‧Central Optical Zone

12‧‧‧ peripheral optical zone

121‧‧‧ curved surface

2‧‧‧ eyeball

21‧‧‧ retina

211‧‧‧Central clear image area

212‧‧‧After the out-of-focus image area

The first figure is a schematic diagram of the optical path of the first preferred embodiment of the creation.

The second drawing is a schematic plan view of the first preferred embodiment of the creation.

The third figure is a schematic diagram of the optical path of the second preferred embodiment of the present invention.

The fourth figure is the processing flow chart of the creative contact lens.

The fifth drawing is a processing flow chart of a preferred embodiment of the present invention.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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) 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) 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) 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.

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.

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.

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‧‧‧ lenses

10‧‧‧ mark

11‧‧‧Central Optical Zone

12‧‧‧ peripheral optical zone

121‧‧‧ curved surface

2‧‧‧ eyeball

21‧‧‧ retina

211‧‧‧Central clear image area

212‧‧‧After the out-of-focus image area

Claims (4)

A contact lens structure comprising a central optical zone, a peripheral optical zone surrounding the central optical zone, and a mark, wherein: a central optical zone for clearly imaging light passing through the central optical zone into the retina of the user's eye a central clear image area; surrounding the optical zone of the central optical zone, the peripheral optical zone is in an irregular shape conforming to the opposite direction of the retina of the user's eye and conforming to the stereoscopic state, and bending around the peripheral optical zone of the central optical zone The face is configured to allow the passing light to be imaged at a position of the out-of-focus image area of the front of the retina of the user's eyeball. The contact lens configuration of claim 1, wherein the outer surface of the contact lens is further provided with a mark for providing a user identification wearing direction. A contact lens structure comprising a central optical zone, a peripheral optical zone surrounding the central optical zone, wherein: a central optical zone for clearly imaging light passing through the central optical zone in the center of the retina in the user's eye a clear image area; surrounding the optical zone of the central optical zone, the peripheral optical zone is in an irregular shape conforming to the opposite direction of the retina of the user's eye and conforming to the three-dimensional state, and surrounding the curved surface of the peripheral optical zone of the central optical zone So that the passing light can be imaged at the position of the out-of-focus image area of the periphery of the retina of the user's eyeball. The contact lens configuration of claim 3, wherein the outer surface of the contact lens is further provided with a mark for providing a user identification wearing direction.