Photocopying – Projection printing and copying cameras – With focusing or projection screen
Patent
1976-02-20
1977-10-11
Griffin, Donald A.
Photocopying
Projection printing and copying cameras
With focusing or projection screen
355 65, G03B 1328, G03B 2770
Patent
active
040532208
ABSTRACT:
Apparatus for optically copying to a desired scale with good resolution reproductions of small film images. Includes the equivalent of a filmstrip/slide or animation stand apparatus, a reproducing camera mounted upon an upright track support for elevational adjustment and having the axis of its focally adjustable lens and its gate arranged substantially downward, and a lateral tabletop supported below the camera lens for interception of the axis of the latter thereby. Means define an internal chamber which has a lateral bottom wall and an entrance upright sidewall with a top portion of this means having a large opening down through which the axis of the reproducing camera lens extends to the top face of the bottom wall and with the entrance wall having a beam entrance window. Means provide the top face of the bottom wall with a screen surface upon which an image bearing beam may be projected to form an image for photographic transfer upwardly into the reproducing camera, and means supports a projector with the optical axis of its gate and projecting lens arranged substantially laterally and extending through the beam entrance window into the chamber.
An oblique transparent mirror is mounted in the chamber behind the entrance window and is canted forward toward the latter sufficiently so that its reflective surface receives image bearing beams from the projector and reflects them downward to and upon the top face screen for reflection back upward through the transparent mirror and the top opening for reception by the camera; this transparent mirror being of good optical glass and of a thickness (.ltoreq.) one-eighth of an inch, (i.e., approximately equal to or less than one-eighth of an inch).
REFERENCES:
patent: 2665608 (1954-01-01), Clark
patent: 2727427 (1955-12-01), Jenkins
patent: 2857806 (1958-10-01), Shuftan
patent: 3364815 (1968-01-01), Smith et al.
patent: 3649120 (1972-03-01), Pfeifer et al.
patent: 3846022 (1974-11-01), Kurhi
Griffin Donald A.
Photographic Equipment Service, Inc.
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