US PATENT SUBCLASS 250 / 329
RECORD PROJECTORS
Current as of: June, 1999
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DEFINITION
Classification: 250/329
(under the class definition) Subject matter which includes a source of radiation, a screen and a record having a pattern or a support for a record wherein the radiation forms a radiation image of the pattern and (1) a light image of the radiation image is formed on the screen or (2) a light reversal image is formed on the screen, when illuminated and methods of using such means.
(1) Note. Included are devices which as a result of part (2) of the definition cause more contrast of image details on the screen when illuminated.
(2) Note. The screen is not restricted to a luminescent type as long as an image can be seen as a result of a radiation image incident upon the screen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
271, for coded record readers wherein the reader gives a response to identify a code pattern.
316.1+, for methods and apparatus for recording infrared patterns from a infrared source by means of a screen and a recording member.
327.2, for methods and apparatus including a source with a recording detector which may utilize a screen in the production of a record. 330, for methods and apparatus for infrared pattern conversion to visible light images.
458.1+, for methods and apparatus for irradiating as luminophor generally.
483.1+, for luminescent devices, per se.
SEE OR SEARCH CLASS
40, Card, Picture, or Sign Exhibiting,
361+, for film viewers generally.
348, Television,
744+, for television systems wherein the image is projected onto a screen.
353, Optics: Image Projectors,
1+, for image projectors generally.
355, Photocopying, 18+, and 78+ for methods and apparatus for photocopying by projection or contact printing.
359, Optics: Systems (Including Communication) and Elements,
369, and 400 for compound lens systems with viewing screens and 466+ for Stereoscopic viewers.
