Variable size circular aperture camera

Details Variable size circular aperture camera Variable size circular aperture camera

1983-12-30

1986-03-04

Hix, L. T.

Illumination

Supported by vehicle structure

Condition responsive

362 35, G03B 4100

Patent

active

045737797

ABSTRACT:
Apparatus is disclosed for exposing circular patterns of light on a photosensitive surface by providing, spaced from the surface, a lengthwise variable light source focusable on the photosensitive surface and rotatable relative to the surface about an axis of rotation passing through the center of the photosensitive surface and the light source. In a modification, the axis of rotation passes through the center of the photosensitive surface and through a point radially offset from the light source.

REFERENCES:
patent: 3076377 (1963-02-01), Brownscombe
patent: 3566763 (1971-03-01), Knopf
patent: 3668990 (1972-06-01), Hayes
patent: 3688655 (1972-09-01), Klosterman et al.
patent: 3695154 (1972-10-01), Webster
IBM Technical Disclosure Bulletin, vol. 13, No. 7, Dec. 1970, p. 1760, "Printed Circuit Generation Camera", L. P. Hayes.
IBM Technical Disclosure Bulletin, vol. 10, No. 7, Dec. 1967, p. 984, "Halftone Master Land Generation", R. S. Ladd.

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