G03B 21/142
Adjusting of projection optics
Official title: {Adjusting of projection optics}
G03B21/142 (Adjusting of projection optics) appears on 1,044 US grants and 1,266 published applications in this corpus.
Search patents in G03B- Granted patents
- 1,044
- Published applications
- 1,266
- Assignees
- 308
- Inventors
- 1,750
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 0 |
| 2004 | 3 | 11 |
| 2005 | 5 | 16 |
| 2006 | 13 | 34 |
| 2007 | 20 | 29 |
| 2008 | 7 | 13 |
| 2009 | 13 | 13 |
| 2010 | 7 | 30 |
| 2011 | 13 | 37 |
| 2012 | 23 | 30 |
| 2013 | 23 | 38 |
| 2014 | 40 | 71 |
| 2015 | 45 | 67 |
| 2016 | 72 | 64 |
| 2017 | 68 | 70 |
| 2018 | 78 | 82 |
| 2019 | 89 | 138 |
| 2020 | 97 | 110 |
| 2021 | 107 | 116 |
| 2022 | 97 | 91 |
| 2023 | 69 | 65 |
| 2024 | 58 | 62 |
| 2025 | 45 | 41 |
| 2026 | 43 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Projector and projection positioning method1 Sep 2026US 12,724,334 B2Goertek Inc.
- Projector and projection system1 Oct 2026US 2026/0299390 A1Seiko Epson Corporation
- Projector24 Sep 2026US 2026/0287987 A1Seiko Epson Corporation
- Light source module and projector17 Sep 2026US 2026/0277085 A1Seiko Epson Corporation
- Zoom projection lens27 Aug 2026US 2026/0251890 A1Sun Yang Optics Development Co., Ltd.
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Most cited
By later US patents
- Method and device for projecting a panoramic image with a variable resolution76US 8,016,426 B26115187 Canada Inc. · 2011
- LED projection night light54US 8,721,160 B22014
- Diffractive waveguide providing a retinal image48US 11,204,540 B2DigiLens Inc. · 2021
- Method and devices for displaying images for viewing with varying accommodation33US 6,953,249 B12005
- Projector, projection method and storage medium in which projection method is stored31US 7,270,421 B2Casio Computer Co., Ltd. · 2007