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公开(公告)号:US3903413A
公开(公告)日:1975-09-02
申请号:US42259973
申请日:1973-12-06
Applicant: POLAROID CORP
Inventor: MANNING MONIS J
CPC classification number: G01J1/4214 , B29D11/00634 , G01J1/0209 , G01J1/0488 , G02B5/206 , G02B5/226 , H01L31/02162
Abstract: An optical filter element is provided which comprises a plastic resin containing a particulate dispersion of filter glass. In one preferred embodiment, the photocell of a photometric device, e.g., the automatic exposure control system of a photographic camera, is embedded in the glass-filled resinous element to provide necessary spectral correction filtration for the photocell.
Abstract translation: 提供了一种滤光器元件,其包括含有过滤玻璃的颗粒分散体的塑料树脂。 在一个优选实施例中,光度测量装置的光电池例如照相机的自动曝光控制系统被嵌入玻璃填充的树脂元件中,以为光电池提供必要的光谱校正过滤。