US PATENT SUBCLASS 348 / 40
HOLOGRAPHIC
Current as of: June, 1999
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DEFINITION
Classification: 348/40
HOLOGRAPHIC:
(under the class definition) Subject matter wherein the picture signal includes information derived from an object wave formed by the resulting interference pattern of two mutually coherent component light beams.
(1) Note. In the holos:graphic process a coherent beam is first split into two component beams, one of which irradiates a recording medium. The diffraction or scattering of the first component beam by the object forms the object wave which proceeds to, and interferes with, the second component beam or reference wave at the medium. The resulting pattern is a three-dimensional record (hologram) of the object wave.
SEE OR SEARCH CLASS
359, Optics: Systems (Including Communication) and Elements,
1+, for optical holos:graphic system or element, per se.
