发明授权
US4289497A Gradient photochromic lens and method selectively reducing photochromic
activity
失效
梯度光致变色透镜和方法选择性地降低光致变色活性
- 专利标题: Gradient photochromic lens and method selectively reducing photochromic activity
- 专利标题(中): 梯度光致变色透镜和方法选择性地降低光致变色活性
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申请号: US183654申请日: 1980-09-02
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公开(公告)号: US4289497A公开(公告)日: 1981-09-15
- 发明人: Richard J. Hovey
- 申请人: Richard J. Hovey
- 申请人地址: MA Southbridge
- 专利权人: American Optical Corporation
- 当前专利权人: American Optical Corporation
- 当前专利权人地址: MA Southbridge
- 主分类号: D06P3/00
- IPC分类号: D06P3/00 ; G02B3/00 ; G02C7/10 ; D06P5/00
摘要:
A new gradient photochromic lens having a uniform resistance to fatigue is disclosed. A method for selectively reducing photochromic activity in one or more portions of a lens having a photochromic dye uniformly disposed across the surface thereof is also disclosed.
公开/授权文献
- US5608398A Differential coding method and an apparatus therefor 公开/授权日:1997-03-04
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