Method for recording data in a holographic form on a lens and a corresponding lens

A hologram and lens technology, applied to hologram recording materials, hologram form/shape, characteristics of hologram objects, etc., can solve the problems that characters cannot be read by several users at the same time, and are inconvenient to use

Active Publication Date: 2010-01-06
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This tool is inconvenient to use, especially since the characters cannot be read simultaneously by several users

Method used

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  • Method for recording data in a holographic form on a lens and a corresponding lens
  • Method for recording data in a holographic form on a lens and a corresponding lens
  • Method for recording data in a holographic form on a lens and a corresponding lens

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Embodiment Construction

[0032] like figure 1 , the method of writing data to an optical lens begins by constructing a source image containing data (step 10). A very wide variety of methods for generating images are available, such as photography, scanning of printed pages, etc. Preferably, the source image is generated computationally, such as using a computer. Images are recorded as tables of light values ​​assigned to individual pixels of the source image. Therefore no physical medium such as paper or a display stand is required for the source image. The data contained in the source image can be juxtaposed alphanumeric characters, a barcode corresponding to the data to be read, or any other method of visually describing the data.

[0033] Then, a hologram of the source image is calculated by a computer (step 20). Currently, various programs are available to generate holograms from source images. The function of these programs is mainly to perform Fourier transform on the source image. The hol...

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PUM

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Abstract

The inventive method for recording data on an optical lens (2) consists in recording a data-containing source image, in generating the hologram (3) of the image source and in recording said hologram on the lens surface portion ranging from 0.5 mm<2> to 15 mm<2>. The data can be readout by illuminating said lens by means of a light beam (101) in the hologram area. A read-out image (105, 106) which reproduces the source image and on which data is readable is formed at a distance from the lens. Said lens can be embodied, in particular in the form of an ophthalmic lens.

Description

technical field [0001] The present invention relates to a method of writing data onto an optical lens, and to an optical lens including the data written thereon. Background technique [0002] It is known to form holograms on optical lenses for a decorative effect. For example documents US5892600 and DE19644620A1 describe an optical lens with a hologram on its surface which is reconfigurable in the near field, which provides a decorative function which is combined with a marking effect in DE19644620A1. Document WO 01 / 23921 A1 discloses an optical lens having on its surface a set of holograms reconfigurable in the far field, which provide a decorative function. [0003] In the present invention, the purpose of writing the hologram on the lens is to record relevant data for its production or use, without changing its use as an optical lens. [0004] It is difficult to write data to optical lenses without hindering their use. This is because the lenses are transparent and dat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/08G02C7/02B24B13/00
CPCG03H2001/2234G03H2230/10G03H2250/36G03H2001/0284G03H2260/62G03H2001/0478G03H2270/52G03H2001/2244G03H2001/043G03H2270/55G03H2001/306G03H2240/42G03H1/08G03H1/30G03H1/02G03H2210/53G02C7/021G03H2210/20G03H1/0244G03H2001/0204B60K2370/29B29D11/00326B29D11/00009G02C7/02B24B13/00
Inventor 塞德里克·贝贡
Owner ESSILOR INT CIE GEN DOPTIQUE
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