Single lens reflex camera with rotatable built-in flash

Details Single lens reflex camera with rotatable built-in flash Single lens reflex camera with rotatable built-in flash

1998-02-06

1999-08-31

Gray, David M.

Photography

With object illumination for exposure

Having flash built into camera

G03B 1724

Patent

active

059465069

ABSTRACT:
A single lens reflex camera includes a rotatable built-in flash unit. An optical member, such as a pentaprism, conducts light rays to an eyepiece unit. Pentaprism has a right roof surface, a left roof surface, and a third reflecting surface. Third reflecting surface enables light reflected by the roof surfaces to pass to the eyepiece unit. The built-in flash unit is rotatable between a housed position, in which a light emitting unit is housed within a camera body, and a use position, in which the light emitting unit projects from the camera body. The built-in flash unit rotates centered on a rotation axis that is parallel to a photographic optical axis, extending from the camera to a photographic object. When in the housed position, the light emitting unit is positioned along either the left or right surface of surface of the optical member.

REFERENCES:
patent: 4796034 (1989-01-01), Leonard et al.
patent: 5107287 (1992-04-01), Swayze

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