Camera provided with means for giving information about photogra

Details Camera provided with means for giving information about photogra Camera provided with means for giving information about photogra

1978-09-26

1980-04-29

Hix, L. T.

350 385, G02B 532, G03B 1302

Patent

active

042003806

ABSTRACT:
A camera according to this invention includes a diffracting means disposed in the optical path of the object image forming light for a finder. The diffracting means is illuminated by a light source also provided within the body of the camera so as to exit the diffracted light toward the object side. A person who stands on the object side as an object can ascertain whether or not he is within the area of the object field to be photographed by the camera. Also, in taking a picture of himself with a camera mounted on a tripod using a self-timer, he can, while standing on the object side, obtain information about the self-timer through a photographic lens. According to one preferred embodiment of the invention, as the diffracting means, there is used a volume type phase diffracting means to avoid any adverse effect of the diffracting means on the object image forming light in which the diffracting means is placed.

REFERENCES:
patent: 2642790 (1953-06-01), Scholkemeier
patent: 2744444 (1956-05-01), Breitman
patent: 3008398 (1961-11-01), Sanborn

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