公开(公告)号：US4141057A

公开(公告)日：1979-02-20

申请号：US831333

申请日：1977-09-07

申请人： Rolf Dietrich ,  Wolfgang Eisinger ,  Hans E. Heintke ,  Hans Karey ,  Robert Oberheim

发明人： Rolf Dietrich ,  Wolfgang Eisinger ,  Hans E. Heintke ,  Hans Karey ,  Robert Oberheim

IPC分类号： G03B15/02 ,  G03B15/04

CPC分类号： G03B15/0442

摘要： A reflector of a photo flash device bounds a space for a light source. The space has an open side across which a light-transmissive shield extends that permits light from the source to issue through the opening at a first angle of emergence. A wide-angle light-transmissive shield is hinged to a frame of the first-mentioned shield and can be swung into and out of an operating position in which it is located in front of the first-mentioned shield and causes the issuing light to emerge at a larger angle of emergence. This permits a user to increase or decrease the area which he wishes to have illuminated when the device is operated.

摘要翻译： 照相闪光装置的反射器限定光源的空间。 该空间具有敞开的侧面，透光屏蔽延伸穿过其中，其允许来自源的光以第一出现角度通过开口发出。 广角透光屏蔽铰链到首先提到的屏蔽的框架上，并且可以摆放在其位于首先提到的屏蔽前面的操作位置和外面，并使出射光出现 在更大的出现角度。 这允许用户在操作设备时增加或减少他希望发光的区域。