Objectives particularly for television cameras

Details Objectives particularly for television cameras Objectives particularly for television cameras

1983-02-28

1985-12-24

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313371, 350319, H01J 3150

Patent

active

045608652

ABSTRACT:
An objective, for example for a television camera, has a pinhole aperture (3) and an electronic image intensifier (5) arranged behind the aperture. The pinhole aperture gives extreme depth of field and the image intensifier has adequate gain to compensate for the low yield of the aperture. The aperture may be defined in an opaque layer deposited on a glass plate. The image intensifier may comprise a multichannel plate.

REFERENCES:
patent: 4187002 (1980-02-01), Roziere
patent: 4254437 (1981-03-01), Funk et al.
patent: 4376889 (1983-03-01), Swift
patent: 4440476 (1984-04-01), Jacobson
The Focal Encyclopedia of Photography, 1971, pp. 1124-1125, McGraw-Hill.

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