Projection type image display apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 26, 2017
Issued Date -
N/A
app pub date -
Apr 7, 2016
filing date -
Sep 7, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A laser beam (L50) generated by a laser light source (50) is reflected by a light beam scanning device (60) and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates the laser beam onto the hologram recording medium (45). At this time, scanning is carried out by changing a bending mode of the laser beam with time so that an irradiation position of the bent laser beam (L60) on the hologram recording medium (45) changes with time. Regardless of an irradiation position of the beam, diffracted light (L45) from the hologram recording medium (45) produces a reproduction image (35) of the scatter plate on the spatial light modulator (200). The modulated image of the spatial light modulator (200) is projected onto a screen (400) by a projection optical system (300).
First Claim
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Family
International Classification(s)
- 2016 Application Filing Year
- H04N Class
- 18761 Applications Filed
- 14708 Patents Issued To-Date
- 78.40 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H04N Class
- 18.14 % this patent is cited more than
- 8 Age
Maintenance Fees
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|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 26, 2025 |
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