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Chromatic vision correction resin glasses with reduced concave reflection
   
Document Number
US Patent 6142626
Issued Date
November 7, 2000
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Inventors
Lu; Zhong (Chang Chin,CN)
Lu; Weidong (Chang Chin,CN)
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Abstract
The chromatic vision correction resin glasses with reduced concave reflection is manufactured according to the following steps. First, the resin eyeglass is dyed chemically to meet the requirements of 4 sorts (21 kinds) of chromatogram correction curves. Second, the convex of resin eyeglass is coated in a vacuum environment with a CF film, the thickness of which should be controlled to make the light permeability of the dyed resin eyeglass decrease about 10% to lower the reflection of its concave. Third, in order to reduce concave reflection further, it is practicable to coat the concave with permeance promotion film by evaporation. This technique can eliminate the visual disturbance of eyes imaging which occurs in the surrounding of intensive light. As a result, the effect of chromatic vision correction is improved. Meanwhile, it also can diminish the production cost, increase productivity, so that it not only achieves the aim of chromatic vision correction, but also has the effect of eyes' protection.
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Number of Claims:
3
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Published
November 7, 2000
Application Number
09/360,028
Filed
July 23, 1999
US Classification
351/163  
Int'l Classification
G02C   7/02   (20060101)   G02C   7/00   (20060101)   G02C   7/10   (20060101)  
Examiner
Priority Data
Jul 24, 1998 [CN] 98 1 16821
USPTO Field of Search
351/44   351/47   351/48   351/49   351/159   351/163   351/165   351/166   351/177   351/178   351/213  
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