Photoplotter mounting head assembly

Details Photoplotter mounting head assembly Photoplotter mounting head assembly

1987-02-24

1988-06-14

Broome, H.

Recorders

Light or beam recording

Including record receiver or handling means therefor

354 4, 346139R, G01D 942

Patent

active

047515228

ABSTRACT:
A computer controlled photoplotter includes a row of LED's mounted to a light head positioned parallel to the film width. The light head is part of a light head assembly which is moved parallel to the film length. At the end of each pass the light head is indexed widthwise a short distance. During each lengthwise pass the LED's are illuminated at appropriate positions to expose the film at those positions according to the image being plotted. The light head uses cylindrical lenses in which the index of refraction varies radially. The lenses are secured within the bores in the light head by resilient, cushioned material biased against the sides of the lenses through the slot opening into the sides of the bores.

REFERENCES:
patent: 4030122 (1977-06-01), Chemelli
patent: 4096486 (1978-06-01), Pfeifer
patent: 4532526 (1985-07-01), Behrens

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