G03B 21/2053
Intensity control of illuminating light
Official title: {Intensity control of illuminating light (controlled by video signal processing H04N5/74 or H04N9/31)}
G03B21/2053 (Intensity control of illuminating light) appears on 789 US grants and 949 published applications in this corpus.
Search patents in G03B- Granted patents
- 789
- Published applications
- 949
- Assignees
- 227
- Inventors
- 1,338
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 5 | 2 |
| 2003 | 4 | 4 |
| 2004 | 3 | 13 |
| 2005 | 10 | 31 |
| 2006 | 22 | 48 |
| 2007 | 25 | 47 |
| 2008 | 24 | 31 |
| 2009 | 16 | 38 |
| 2010 | 23 | 30 |
| 2011 | 27 | 38 |
| 2012 | 23 | 41 |
| 2013 | 37 | 50 |
| 2014 | 35 | 68 |
| 2015 | 55 | 64 |
| 2016 | 62 | 51 |
| 2017 | 68 | 59 |
| 2018 | 65 | 60 |
| 2019 | 52 | 54 |
| 2020 | 46 | 50 |
| 2021 | 52 | 44 |
| 2022 | 45 | 37 |
| 2023 | 22 | 32 |
| 2024 | 19 | 20 |
| 2025 | 19 | 18 |
| 2026 | 13 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Illumination device, method of controlling illumination device, and projection display apparatus25 Aug 2026US 12,717,223 B2Sony Group Corporation
- Method for operating a discharge lamp and discharge lamp9 Jun 2026US 12,650,637 B2OSRAM GmbH
- Color correction method for lighting system and lighting system2 Jun 2026US 12,647,542 B2Appotronics Corporation Limited
- Method of manufacturing optical element and projection device5 May 2026US 12,619,087 B2HTC Corporation
- Light source driving circuit and projection device using the same28 Apr 2026US 12,613,460 B2Qisda Corporation
- Projector24 Sep 2026US 2026/0292947 A1Seiko Epson Corporation
- An improvement in a projection device16 Jul 2026US 2026/0202723 A1Al-Kor Makina Kalip Sanayi Ve Ticaret A.S.
- Projection display device16 Jul 2026US 2026/0202727 A1JVCKENWOOD Corporation
- Range-based focus assistance for projection optics16 Jul 2026US 2026/0202730 A1Electronic Theatre Controls, Inc.
- Light source device and image projection device having a light source device9 Jul 2026US 2026/0197428 A1Barco N.V.
Most cited
By later US patents
- High dynamic range display devices152US 6,891,672 B2The University of British Columbia · 2005
- Selectable color adjustment for image display96US 7,283,181 B2Hewlett-Packard Development Company, L. P. · 2007
- Single crystal silicon arrayed devices for projection displays88US 5,581,385 AKopin Corporation · 1996
- Integrated front projection system87US 6,179,426 B23M Innovative Properties Company · 2001
- Multicolor illumination device using moving plate with wavelength conversion materials71US 7,547,114 B2YLX Incorporated · 2009