Replaceable finder system for single-lens reflex camera

Details Replaceable finder system for single-lens reflex camera Replaceable finder system for single-lens reflex camera

1977-06-13

1979-01-02

Griffin, Donald A.

354 53, G03B 1912, G03B 1720

Patent

active

041324722

ABSTRACT:
An SLR camera having a replaceable penta-prism 6 slidably inserted from the rear face of the camera via mating flange rails 13a on the finder body and recessed grooves 8a in the camera body, a replaceable focal plate or screen 3 removably mounted in a pivotal holding plate 11 accessible through the lens mount 9, and a meter display system extending into the viewing frame of the finder and interposed between the penta-prism and the focal plate. The display system may include a shutter speed scale 15 and an overlying manual speed pointer 16 readable from the lens light, and an inset LED array 17 for indicating the meter reading.

REFERENCES:
patent: 3630133 (1971-12-01), Shimomura
patent: 3903530 (1975-09-01), Taguchi et al.
patent: 3967299 (1976-06-01), Shono
patent: 3996593 (1976-12-01), Uno et al.

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