发明名称 LENS SHUTTER CAMERA
摘要 PURPOSE:To meter reflected light on a film surface by use of a single photodetecting element by providing the 1st optical system which forms a photometric optical path for display that guides external light to a photodetecting element for photometry and the 2nd optical system which forms a photometric optical path for photographing that guides the reflected light from the film surface in exposure to the photodetecting element for photometry. CONSTITUTION:This camera is provided with a photographic lens 1, shutter 2, film 3, external light lens 4 which collects light from outside the optical path of the photographic lens 1, optical fiber 5 for guiding the light, mirror 6, the photodetecting element 7, film surface lens 8 which collects the reflected light from the film surface, and an optical fiber 9 which guides the light to the mirror 6 that makes the light incident to the photodetecting element 7. When the shutter 2 is closed, the external light is made incident to the photodetecting element 7 through the external light lens 4, optical fiber 5, and mirror 6, and when the shutter 2 is open, the reflected light from the film surface 3 is made incident to the photodetecting element 7 through the film surface lens 8, optical fiber 9, and mirror 6.
申请公布号 JPS59136722(A) 申请公布日期 1984.08.06
申请号 JP19830010506 申请日期 1983.01.27
申请人 RICOH KK 发明人 FURUKAWA AKIO;SASAKI SABUROU;TAKAHASHI AKIRA;KUBO NOBUAKI;SAWABE KOUSAKU;YAMAGUCHI KUNIHISA;ANDOU AKIRA
分类号 G03B7/099;G03B7/0997;G03B17/00;G03B19/00 主分类号 G03B7/099
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