Method for solving distortion of microprism lens and microprism lens

A technology of microprism and prism, which is applied in glasses/goggles, optics, instruments, etc., can solve the problems affecting binocular image fusion and image distortion of patients, and achieve the effect of improving experience, better fusion, and solving image distortion

Active Publication Date: 2021-04-16
ZHEJIANG UNIV OF TECH
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  • Claims
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Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, in order to solve the problem of image distortion that occurs when strabismus patients use microprism lenses and affect the fusion of patients' binocular images, the present invention provides a method for solving the distortion of microprism lenses and microprism lenses

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  • Method for solving distortion of microprism lens and microprism lens
  • Method for solving distortion of microprism lens and microprism lens
  • Method for solving distortion of microprism lens and microprism lens

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] refer to Figure 1 ~ Figure 3 , a microprism lens, the microprism facing the direction of the field of view of the human eye is regarded as a central prism, and its corresponding light incident angle is zero degrees; The microprism array is regarded as the right prism; it is characterized in that, the base angle of the central prism is α, and the value of the base angle α can be determined according to the prism degree lenses required by patients with strabismus, and the microprisms on both sides of the central prism The base angle is α m , m refers to the mth microprism on the left or right side of the central prism; the distortion generated by the incident light from the left prism is defined by the left distortion coefficient D L Represented by the exit angle θ of the ray L ' for the incident angle θ L Derivation is obtained; the distortion generated by t...

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Abstract

The invention discloses a method for solving distortion of a microprism lens, which comprises the following steps of: regarding a microprism over against a human eye view field direction as a central prism, and setting a corresponding light incident angle to be zero degree; regarding the microprism array on the left side as a left prism, and regarding the microprism array on the right side as a right prism; by changing the prism degree of the microprism lens, the base angle of the microprism structure is substantially changed, so that the object image angle of light passing through the microprism lens is not changed. The prism degrees of the left prism and the right prism are respectively determined by a left distortion coefficient DL and a right distortion coefficient DR, and the left distortion coefficient DL and the right distortion coefficient DR are 1. According to the invention, the problem of image distortion of the microprism lens is solved.

Description

technical field [0001] The invention relates to a method for solving the distortion of a microprism lens and the microprism lens, which solves the problem of image distortion caused by a strabismus patient wearing the microprism lens, and helps the patient recover the ability of binocular single vision. Background technique [0002] Strabismus is a relatively common ophthalmic disease in children. According to literature research, the incidence of strabismus in children worldwide is as high as 2%. Strabismus disease will not only affect children's eye development, severe strabismus may even affect the development of children's whole body bones, causing irreversible damage. In recent years, strabismus corrective lenses have been used in the direct treatment of children's strabismus or as adjuvant treatment before and after surgery. Reports from medical institutions show that strabismus correction lenses have achieved good clinical results in the treatment of implicit strabis...

Claims

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Application Information

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IPC IPC(8): G02C7/14G02B27/00
Inventor 乐孜纯毛强董文
Owner ZHEJIANG UNIV OF TECH
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