发明名称 Flasher capable of varying a light distribution angle
摘要 A stationary reflecting mirror (reflecting umbrella 2) is provided for reflecting light, emitted from a xenon discharge tube (3), to the side of an object to be photographed. An upper reflector plate (5) is provided above and in front of the stationary reflecting umbrella (2) and a lower reflector plate (6) is provided below and in front of the stationary reflecting umbrella (2). The upper and lower deflector plates (5, 6) are constructed so as to be pivoted in interlock with a change in the focal length of a photographic lens. With the upper and lower deflector plates (5, 6), part of light emitted from an opening (2A) is reflected and the direction of the reflected light that is emitted to the object is varied, and thereby the distribution angle of the light emitted to the object is varied. In this way, there is obtainable a flasher which is structurally simple and inexpensive without using high-performance lenses or an accurate moving mechanism.
申请公布号 US5854949(A) 申请公布日期 1998.12.29
申请号 US19960732710 申请日期 1996.10.18
申请人 RICOH COMPANY, LTD. 发明人 FURUKAWA, AKIO;NAKAHIRA, TOSHIAKI
分类号 G03B15/05;(IPC1-7):G03B15/06 主分类号 G03B15/05
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