Photographic lamp
    12.
    发明授权
    Photographic lamp 失效
    摄影灯

    公开(公告)号:US4760498A

    公开(公告)日:1988-07-26

    申请号:US914494

    申请日:1986-10-02

    CPC classification number: F21V7/00 G03B27/542 F21W2131/406

    Abstract: A photographic lamp possessing a main and back-reflector which are located respectively behind and in front of a light source. The main reflector limits a light exit aperture which is closed by a diffuser screen. The back-reflector comprises a transparent base which is partly provided with a reflecting layer. The reflecting layer is preferably applied in the manner of a graduated filter, so that the reflecting points are more numerous in the center of the base and less frequent at its periphery. The light produced is thereby extremely even and the illumination is very even, avoiding dark areas on the diffuser screen.

    Abstract translation: 具有分别位于光源的后面和前面的主反射器和后反射器的摄影灯。 主反射器限制由扩散器屏幕封闭的光出射孔。 后反射器包括部分设置有反射层的透明基底。 反射层优选以刻度滤光片的方式施加,使得反射点在基底的中心更多,在其周边不太频繁。 因此,产生的光非常均匀,照明非常均匀,避免了漫射屏幕上的暗区。

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