Optical unit and projector including the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 20, 2018
Issued Date -
N/A
app pub date -
Apr 7, 2015
filing date -
Dec 18, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An optical unit includes a digital micromirror device in which each of micro-mirrors is driven biaxially in ON/OFF control, a first prism directs illumination light to the digital micromirror device, a second prism including an OFF-light reflecting surface reflects OFF light reflected from the micro-mirrors in an OFF state and transmits ON light reflected from the micro-mirrors in an ON state, and a third prism emits the ON light incident from the second prism toward a projection side. The micro-mirrors reflect the OFF light so that an optical axis of the OFF light is directed away from a projection-optical-axis plane including an optical axis of the ON light and an optical axis of the illumination light.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- H04N Class
- 17427 Applications Filed
- 14242 Patents Issued To-Date
- 81.73 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- H04N Class
- 27.70 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 20, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 20, 2029 |
