发明名称 Optical element for redistributing the light output of a photoflash lamp assembly or the like
摘要 A photographic camera of the type which is adapted to utilize an artificial lighting assembly, e.g. a flashcube, for illuminating a scene to be photographed is provided with an optical element for intercepting light rays from the artificial lighting assembly to change its light distribution in a manner whereby the distribution of the intensity of illumination falling on the scene is made more uniform than it would otherwise be absent the optical element.
申请公布号 US4204269(A) 申请公布日期 1980.05.20
申请号 US19770864316 申请日期 1977.12.27
申请人 POLAROID CORP 发明人 PLUMMER, WILLIAM T
分类号 G03B15/04;(IPC1-7):G03B15/02 主分类号 G03B15/04
代理机构 代理人
主权项
地址