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Ophthalmic lens, frame glasses, manufacturing method of the ophthalmic lens, and peripheral imaging interference device

A technology of interference device and manufacturing method, which is applied in glasses/goggles, optics, instruments, etc., and can solve the problems of not being able to control the development of myopia well, and not being able to produce myopia control effects

Pending Publication Date: 2021-12-03
EYEBRIGHT MEDICAL TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, if the eyeball moves and its position relative to the frame glasses changes, the imaging will be as follows: image 3 As shown, the peripheral ray 02 becomes the central ray in the new optical system, which may cause a certain degree of myopia, while the original 01 ray in the center becomes the peripheral ray in the new system, because the refractive power is smaller than that of the peripheral, it may cause hyperopia peripheral defocus
This is the main problem that the current frame glasses with peripheral defocus design for myopia cannot control the development of myopia well
The technologies recorded in the above-mentioned patent documents and the like all have such problems, and cannot produce a good myopia control effect

Method used

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  • Ophthalmic lens, frame glasses, manufacturing method of the ophthalmic lens, and peripheral imaging interference device
  • Ophthalmic lens, frame glasses, manufacturing method of the ophthalmic lens, and peripheral imaging interference device
  • Ophthalmic lens, frame glasses, manufacturing method of the ophthalmic lens, and peripheral imaging interference device

Examples

Experimental program
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Effect test

no. 1 approach

[0032] This embodiment relates to a spectacle lens (sometimes simply referred to as lens) of frame-type glasses and frame-type glasses having the spectacle lens. On the basis of the lens having a peripheral myopia defocusing structure, a peripheral lens is provided on the outer periphery of the central optical zone Imaging interference area. The central optical zone is the imaging zone corresponding to the pupil with a diameter of 5 mm to 15 mm, preferably within the range of 5 mm to 10 mm, which plays a role in clear imaging. The peripheral imaging interference area is an area with a diameter of 5-30 mm outside the central optical area, preferably 10-20 mm, in which there are patterns and patterns formed by the imaging interference part, and the imaging interference part plays a role in interfering with the continuous and clear periphery of the lens. Imaging, the effect of preventing the human eye from directly gazing at the image through the peripheral area. The entire imag...

Embodiment 1

[0041] (1) Lens parameters: Peripheral defocus control frame glasses are made according to the method in US7025460, the lens is made of front and back surfaces, the thickness of the lens center is 3mm, the material refractive index is 1.517, the radius of curvature of the back surface is 75mm, and the front surface is non- Spherical surface, the radius of curvature is 134.6, and the surface shape satisfies the equation s=a 1 *x 2 +a 2 *x 4 +a 3 *x 6 , where s is the axial height from different positions on the front surface to the apex (in mm), x is the position in the diameter direction of the lens, in mm, a 1 =0.003312,a 2 =2.053*10 -6 ,a 3 =-6.484*10 -9 . The lens will correct myopia for patients with a degree of myopia -3D, and provide myopic peripheral defocus in the eye position.

[0042] (2) Use chemical materials to take the center of the optical zone as the center of the circle, with diameters of 10-11mm, 12-13mm, 14-15mm, and 16-17mm to coat 4 circles. Afte...

Embodiment 2

[0045] (1) Lens parameters: according to the mode among CN106707542B, peripheral defocus control frame glasses are made, and its lens is made of front and rear surfaces, the total diameter of the lens is 80mm, the center thickness is 3mm, and the material refractive index is 1.55. The radius of curvature of the front surface of the optical zone is 7.724, the radius of curvature of the back surface is 5.954, and the back surface is an aspheric surface. The surface shape expression is:

[0046]

[0047] Among them, c is the reciprocal of the radius of curvature of the basic spherical surface of the optical part, y is the vertical distance from any point on the curve to the abscissa axis (Z), Q is the aspheric coefficient, and A2i is the coefficient of the higher order term of the aspheric surface, and the The aspheric surface is obtained by performing rotationally symmetrical changes around the abscissa axis (Z) on the aspheric surface curve. The lens parameters are shown in ...

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Abstract

The invention provides an ophthalmic lens, frame glasses, a manufacturing method of the ophthalmic lens, and a peripheral imaging interference device, which contribute to improving a myopia control effect. The spectacle lens is a peripheral myopia out-of-focus lens, a peripheral imaging interference area is arranged on the periphery of a central optical area, and an imaging interference part and a transparent gap part are formed in the peripheral imaging interference area. The peripheral part of the lens with peripheral myopia defocus design is regionalized and fuzzified, and in the process that the brain autonomously selects the fovea centralis to be oriented to the most interested area in the nearby range, due to the fuzzy imaging characteristic of the peripheral part, when the human eyes look around the periphery, a behavior mode of changing from eye movement to head movement is adopted, so that the problem of unstable defocus state caused by rotation of a peripheral defocus designed lens during visual rotation of human eyes is solved, the human eyes and a lens system are always in a central position, more stable myopia peripheral defocus is formed, and an expected myopia control effect is obtained.

Description

technical field [0001] The invention relates to a spectacle lens, frame glasses, a manufacturing method of the spectacle lens and a peripheral imaging interference device. Background technique [0002] The main reason for the increase in the degree of myopia is the extension of the axial length of the eye, and the degree increases by 3.00 degrees for every 1mm of extension. The latest medical research confirms that the elongation of the eyeball depends on the peripheral defocus of the retina. According to the concept of refractive optics, refer to figure 1 , 10 of which is the retina, as shown in 30, the focal point falling in front of the retina is called myopic defocus, as shown in 20 in the figure, and the one falling behind the retina is called hyperopic defocus. The center of the retina in myopia shows myopic defocus, while the periphery of the retina shows hyperopic defocus. This kind of hyperopic defocus around the retina is the main reason for the continuous increas...

Claims

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Application Information

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IPC IPC(8): G02C7/06G02C7/02
CPCG02C7/06G02C7/024
Inventor 王曌解江冰
Owner EYEBRIGHT MEDICAL TECH BEIJING