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Variable focus spectacles

A focal length and variable technology, applied in the field of lenses, can solve the problems that zoom lenses cannot meet universal recognition, inconvenient to switch between different glasses, and do not like to wear them.

Inactive Publication Date: 2006-08-23
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many people do not like to wear these glasses and would rather use another pair of glasses
[0003] Naturally, the need to switch between different glasses is inconvenient
It is obvious that the current zoom lens cannot meet the universal recognition
Current lenses are often annoying to users because they need to change the way they view an object (such as tilting their head) in order to view the object through the appropriate portion of the zoom lens

Method used

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  • Variable focus spectacles
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Examples

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Embodiment Construction

[0023] refer to figure 1 , which shows a variable focal length lens 100 according to an embodiment of the present invention.

[0024] The variable focus lens 100 comprises a transparent rear wall 110, a transparent front wall 120, a hydrophobic insulating layer 130 behind the transparent front wall 120; a cavity 140 between the transparent rear wall 110 and the hydrophobic insulating layer 130, Two fluids are contained therein (described below), an annular electrode 150, extending around the inner periphery of the transparent front wall 120, to form a first electrical contact, and an opposing electrode 160 forming a second electrode; A varying voltage is provided between the electrodes 150,160.

[0025] It should be noted that electrode 150 is insulating and hydrophobic. The inner side of the front wall 120 has no insulating layer and is preferably hydrophobic in order to prevent water molecules from sticking thereto. The hydrophobic layer 130 on the front wall 120 can thus...

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Abstract

The invention concerns variable focus spectacles in which the electro-wetting effect is utilized to provide a manually or automatically variable focal length. The variable focus spectacles (200) comprise a spectacle frame (210) and at least one variable power lens (100A, 100B). The lens (100) comprises a transparent rear wall (110), a transparent front wall (120), a cavity (140) formed between the transparent front wall (120) and the transparent rear wall (110), first and second immiscible fluids of differing refractive index contained within said cavity, and electrodes (150, 160) for applying an electric field to said fluids to change a contact angle between an interface layer (M) of the two fluids and the front wall of the lens.

Description

field of invention [0001] The invention relates to variable focal length glasses and lenses used therein. Background technique [0002] Many people are nearsighted and often farsighted as people age. A common solution to this problem is to wear zoom glasses in which the focal length of the lenses changes from top to bottom. However, many people do not like to wear such glasses and would rather use another pair of glasses. [0003] Naturally, the need to switch between different glasses is inconvenient. It is obvious that the zoom lenses currently available cannot satisfy universal recognition. Current lenses often annoy users because they need to change the way they view an object (eg, tilt their head) in order to view the object through the appropriate portion of the zoom lens. Contents of the invention [0004] An object of an embodiment of the present invention is to provide a variable focal length lens suitable for spectacles, and spectacles using such a lens. [...

Claims

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Application Information

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IPC IPC(8): G02C7/08G02B3/14G02B26/02
CPCG02B26/005G02C7/085G02B3/14
Inventor S·凯珀B·H·W·亨德里克斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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