Photographic apparatus

Details Photographic apparatus Photographic apparatus

1979-03-23

1981-08-18

Griffin, Donald A.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250201, 354 86, 354187, 354219, G03B 310, G03B 708, G03B 1704, G03B 1750

Patent

active

042843375

ABSTRACT:
A photographic apparatus of the foldable type in which, when in preparation for photography, a front housing carrying a photographic objective lens system together with a focusing mechanism therefor is moved away from a rear housing to form an exposure chamber for a sensitive material loaded in the rear housing. When the apparatus is rearranged to a folded position, the front housing is brought into compact relation with the rear housing. Since a distance-measurng device is located in the rear housing, there is provided an electrical channel for establishing electrically operative connection between the focusing mechanism and the distance measuring device as arranged along a path between the front and rear housing which remains substantially unchanged in length during the erecting and collapsing operation of the apparatus.

REFERENCES:
patent: 2618209 (1952-11-01), Silent
patent: 3529528 (1970-09-01), Leitz
patent: 3677160 (1972-07-01), Harvey
patent: 3906521 (1975-09-01), Ueda
patent: 3953729 (1976-04-01), Hosoe et al.
patent: 3979763 (1976-09-01), Mills
patent: 4045805 (1977-08-01), Saito

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