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Variable optical transmission device and associated control method

An optical transmittance, transmittance technology, applied in optics, optical components, non-optical accessories, etc., can solve problems such as discomfort, response duration depends, not in line with the wearer's preference, etc.

Active Publication Date: 2020-09-15
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, when the optical transmittance of the lens changes too quickly, such as with liquid crystal lenses, the wearer experiences a too sudden change in light intensity, which also leads to discomfort.
[0006] In photochromic lenses, the duration of response depends on the composition and concentration of the photochromic component and may not be adapted to wearer preference
In electrochromic lenses and liquid crystal lenses, the response duration is set automatically by the lens' control unit and may also not be in accordance with the wearer's preference

Method used

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  • Variable optical transmission device and associated control method
  • Variable optical transmission device and associated control method
  • Variable optical transmission device and associated control method

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Embodiment Construction

[0077] figure 1 A system, here spectacles 1 , comprising a variable transmission device 2 and a frame 3 is shown. The variable transmission device 2 comprises two variable transmission optics 4 a , 4 b (here ophthalmic lenses) and at least one control unit 5 . In the embodiments described herein, the variable transmission optic may be an electrochromic lens or a liquid crystal lens. Each variable transmittance optic 4a, 4b is controlled by a control unit 5 configured to control a transmittance parameter of the variable transmittance optic, here the optical transmittance of an electrochromic lens or a liquid crystal lens .

[0078] The system, ie the spectacles 1, may comprise an ambient light sensor 8, for example placed on the frame 3, between the two ophthalmic lenses 4a, 4b. The ambient light sensor 8 may be configured to detect changes in illuminance in the external environment, and / or transmit the measured illuminance to the control unit 5 . Therefore, the variable tr...

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Abstract

A variable optical transmission device (2) comprising: ariable transmission optics (4a, 4b) capable of varying an optical transmission between an initial transmission value ([Tau]v(ti)) and a target transmission value ([Tau]v target ), and a control unit (5) configured to control a transmission parameter of the variable transmission optics, wherein the control unit (5) is configured to control a response duration of the variable transmission optics as a function of the initial transmission value ([Tau]v(ti )) and the target transmission value ([Tau]v target ).

Description

technical field [0001] The present invention relates to variable transmittance optics. Background technique [0002] In variable transmittance optics, the optical transmittance can vary automatically depending on the wearer's lighting environment or on demand. [0003] Variable transmission optics can be used in ophthalmic lenses, sunglasses, ski helmets, or even building windows, doors or walls. In the case of ophthalmic lenses, sunglasses, ski helmets, or building windows, the optical transmittance can be varied automatically depending on the lighting environment or on demand. In the case of doors or walls, the optical transmission can be reduced as needed to provide some privacy to people in the room. [0004] Variable transmittance optics may include, for example, electrochromic components, liquid crystal components, or photochromic components. [0005] It is well known that the response duration of variable transmission lenses affects wearer comfort. When the optica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/10G02F1/133G02F1/163G02F1/29
CPCG02F1/13306G02F1/163G02F1/29G02C7/101G02C7/102G02C11/10G02F1/13318
Inventor M·佩卢克斯
Owner ESSILOR INT CIE GEN DOPTIQUE