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Ophthalmic lens customized for wearers and preparation method thereof

An ophthalmic lens and lens technology, applied in the field of lenses, can solve the problem of not involving the inclination of the lens, and achieve the effects of good vision and comfort, reducing deviation and improving accuracy.

Active Publication Date: 2020-12-08
苏州骏丰光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent CN 102419482B discloses a double-sided aspheric myopia lens designed on the platform of optical design software ZEMAX, which considers the strabismus astigmatism of the lens as one of the optimization conditions, but does not involve the wearer wearing the glasses. The tilt of the lens

Method used

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  • Ophthalmic lens customized for wearers and preparation method thereof
  • Ophthalmic lens customized for wearers and preparation method thereof
  • Ophthalmic lens customized for wearers and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] According to the pupil position provided by the optometry prescription, the tilt angle of the lens and the sagittal height data of the lens to be evaluated, this embodiment establishes a r and strabismic astigmatism C r It is an evaluation model for the evaluation results, which is used to evaluate the actual refractive power of the lens when the human eye squints through the lens.

[0037] See attached figure 1 , which is a side schematic diagram of the light entering the pupil of the human eye through the lens; figure 1 What is shown is the vertical outward inclination angle Γ of the lens embedded in the spectacle frame v , human eye viewing angle Φ r , the incident angle Α of the principal ray (corresponding to the line of sight) entering the pupil of the human eye in a certain viewing angle direction and the path passed by on the front surface of the lens 1 , The exit angle Β on the rear surface of the lens 2 .

[0038] See attached figure 2 , is a schematic...

Embodiment 2

[0062] In this embodiment, the optometry prescription provides the following parameters: a right lens with 3 diopters of hyperopia and a refractive index of 1.597. After the wearer wears the selected spectacle frame, the vertical inclination angle of the lens is 7 degrees, and the horizontal inclination angle is 5 degrees. According to the diopter and material refractive index provided by the optometry prescription, the front and rear surfaces are both spherical as the initial lens. The rear surface of the lens is 1 diopter, the radius of curvature is 597 mm, and the center thickness of the lens is 2.5 mm. Corresponding to the radius of curvature of the front surface is 149.5 mm.

[0063] See attached Figure 5 , Carry out lens design according to the flow process that embodiment 1 provides.

[0064] First, according to the diopter value and material refractive index provided by the optometry prescription, select the appropriate spherical curvature of the front and rear surf...

Embodiment 3

[0079] In this embodiment, the optometry prescription provides the following parameters: a hyperopic left lens with 6 diopters, and a refractive index of 1.597. After the wearer wears the selected spectacle frame, the vertical inclination angle of the lens is 8 degrees, and the horizontal inclination angle is 6 degrees.

[0080] According to the evaluation model and lens design process provided in Example 1, the specific steps are as follows:

[0081] 1. First, according to the diopter and material refractive index provided by the optometry prescription, the front and rear surfaces are both spherical as the initial lens. The front surface of the lens is 1 diopter, the radius of curvature is 597 mm, and the thickness of the lens center is 1.2 mm. Corresponding to the radius of curvature of the rear surface is 85.2 mm. Using the glasses-pupil model to evaluate the refractive power of the initial lens under the condition of no tilt, the changes of strabismus diopter and strabism...

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Abstract

The invention discloses an eyeglass customized for a glasses wearer and a manufacturing method thereof. A design method of the eyeglass comprises the steps that an evaluation model is firstly established according to the pupil position, a slant angle of the eyeglass and to-be-evaluated eyeglass arc rise data provided by an optometry prescription, strabismus diopter and strabismus astigmatism are regarded as evaluation results, the capability of actually refracting sight lines of the wearer through the eyeglass is evaluated, then aspheric surface optimization design and compensation design of the matched eyeglass are performed according to the evaluation results to decrease deviation of the strabismus diopter and the strabismus astigmatism of the eyeglass and improve the eyesight correcting accuracy in different sight line directions. Due to the fact that the eyeglass processed according to the technical scheme gives consideration to the pupil position of the wearer and eyeglass inclination during eyeglass wearing and the refracting ability of the glasses in different sight line direction of the wearer's eye, the wearer obtains a good viewing field and comfortable sensation after wearing a pair of glasses adopting the eyeglasses.

Description

technical field [0001] The invention relates to a design method of personalized ophthalmic lenses, in particular to a design method of the lenses and the processed lenses in consideration of the position of the pupil of the human eye and the inclination factors of the lenses. Background technique [0002] It is well known in the art that eyeglasses are used for the correction of visual defects. The visual defects of the glasses wearer are described by the optometry prescription provided by the ophthalmologist or optometrist. The optometry prescription gives parameters such as the diopter, astigmatism, direction of astigmatism, and refractive index of the lens material to be worn. The maker of the lens designs and manufactures the lens according to the optometry prescription, and finally uses an ophthalmoscope to test the average diopter and astigmatism in a small area specified by the industry on the lens. [0003] In fact, when the human eye sees an object, the line of sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02C7/02
CPCG02C7/027
Inventor 陈晓翌余浩墨
Owner 苏州骏丰光学有限公司