Arrangement for projecting images of markers on to a photosensit

Details Arrangement for projecting images of markers on to a photosensit Arrangement for projecting images of markers on to a photosensit

1976-05-18

1978-02-14

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

With cathode ray tube for light source

250549, 350 66, 355 41, 355 49, 356167, G03B 2776, G03B 2778

Patent

active

040735869

ABSTRACT:
In a telecine equipment of the flying spot cathode-ray tube type with an oscillatory mirror, markers associated with the frames of a film are illuminated with a light spot of small dimensions, which substantially follows the motion of the marker associated with the frame being scanned. This is obtained by means of a small fixed light source, which is used for scanning the path followed by the marker associated with the film frame being scanned, using the same optical channel as for the frame scanning. This same optical channel, used in the reverse direction by means of a fixed mirror located behind the film, forms the image of the illuminated marker.

REFERENCES:
patent: 2718549 (1955-09-01), Mattke
patent: 3149235 (1964-09-01), Clark
patent: 3154371 (1964-10-01), Johnson
patent: 3567852 (1971-03-01), Ett
patent: 3751584 (1973-08-01), Pickering et al.
patent: 3752558 (1973-08-01), Lloyd
patent: 3917955 (1975-11-01), Inuiya

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