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Characterizing an optical element

A technology of optical components and components, applied in the direction of optical components, optics, testing optical performance, etc., can solve the problem of time-consuming measurement methods

Active Publication Date: 2021-06-08
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The available measurement methods are time consuming and the area they cover is reduced to only a few square millimeters (mm 2 )

Method used

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  • Characterizing an optical element
  • Characterizing an optical element
  • Characterizing an optical element

Examples

Experimental program
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Embodiment Construction

[0098] The present invention relates to a lens element intended to be worn in front of the wearer's eye.

[0099] In the remainder of this specification, terms such as "upper", "bottom", "horizontal", "vertical", "above", "below", "front", "rear", etc. may be used to indicate relative word for position. These terms are understood in the context of the wearing conditions of the lens elements.

[0100] In the context of this disclosure, the term "lens element" may refer to an uncut optical lens or a spectacle optical or ophthalmic lens that is edged to fit a particular spectacle frame and optics adapted to be positioned on the ophthalmic lens. "Lens element" may also refer to a transparent lens mold for obtaining an optical lens, said transparent lens mold having an optical element.

[0101] Such as figure 1 As indicated in , a lens element 10 according to the present disclosure comprises:

[0102] - a holder comprising a refractive zone 12 having a refractive power based on...

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Abstract

Method implemented by computer means for characterizing optical elements of a lens element adapted for a person, the lens element comprising: a holder comprising a refraction area having a refractive power based on a prescription for correcting an abnormal refraction of an eye of the person; and a plurality of optical elements configured so that at least one of slow down, retard or prevent a progress of the abnormal refraction of the eye of the person; wherein the method comprises obtaining a two-dimension representation of the local optical power of the lens element using a fringe deflectometry method and wherein the images used for the fringe deflectometry method consist of pixels smaller than or equal to 0.05 mm * 0.05 mm.

Description

technical field [0001] The invention relates to a method implemented by computer means for characterizing optical elements suitable for human lens elements, to a method for checking the conformity of manufactured lens elements, and to a method for controlling the manufacturing A method of lens element manufacturing process for a lens element. Background technique [0002] Myopia of the eye is characterized by the eye focusing distant objects in front of its retina. Nearsightedness is usually corrected with concave lenses, and longsightedness is usually corrected with convex lenses. [0003] Some individuals, particularly children, have been observed to focus incorrectly when they are corrected with conventional single vision optics when they view objects located at close distances (ie, under near vision conditions). Because of this focus defect in a portion of myopic children corrected for distance vision, images of nearby objects are also formed behind the retina (even in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02
CPCG02C7/027G02C7/028G01M11/0228G02C2202/24G02C7/022G02B27/0012
Inventor M·古洛特C·勒迈尔E·加库安M·科奈特
Owner ESSILOR INT CIE GEN DOPTIQUE