Illumination apparatus using a coherent light source
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United States of America Patent
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Oct 13, 2020
Grant Date -
Nov 10, 2016
app pub date -
Jul 18, 2016
filing date -
Sep 7, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An illumination apparatus using a coherent light source, including a light beam scanning device that irradiates a light beam onto a hologram recording medium, and scans the light beam so that an irradiation position of the light beam on the hologram recording medium changes with time. The light beam scanning device scans the light beam so that an irradiation direction of the light beam with respect to the hologram recording medium is along the particular optical path, the light beam scanning device having a function of bending the light beam at a fixed scanning origin so that the light beam swings around the fixed scanning origin on a plane including the fixed scanning origin, and scans the light beam in a one-dimensional direction on the hologram recording medium. Illumination light obtained from the hologram recording medium is irradiated onto a light receiving surface.
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International Classification(s)
- F21V:FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES....
- H04N:PICTORIAL COMMUNICATION, e.g. TELEVISION
- F21Y:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21L,....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G03B:APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS O....
- G03H:HOLOGRAPHIC PROCESSES OR APPARATUS
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