Diascope for a television camera

Details Diascope for a television camera Diascope for a television camera

1979-04-05

1980-09-16

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 10, H04N 702

Patent

active

042233500

ABSTRACT:
A diascope for a television camera comprises a support, a slide holder and an objective lens. In the support is provided a longitudinal slot with a V-shaped cross-section; the slide holder and the objective lens are placed in the slot and are maintained therein by means of leaf springs attached to the support. The slide holder has a cylindrical shape; the angular position of a test pattern integral with the slide holder is adjusted by rotation of the latter about its longitudinal axis. The longitudinal position of the objective lens is adjusted by causing the objective lens to slide towards one end or the other of the slot. The diascope also comprises a deflecting prism, integral with connecting means whose distance in relation to the support of the diascope can be adjusted by three screws which pass through the connecting means into which they are screwed and whose points come into contact with the support; leaf springs, integral with the support at one of their ends, bear against the connecting means in such a way as to maintain the contact between the points of the screws and the support.

REFERENCES:
patent: 4134129 (1979-01-01), Filipovich

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