G02B 17/0828
Off-axis or unobscured systems in which all of the mirrors share a
Official title: {off-axis or unobscured systems in which all of the mirrors share a common axis of rotational symmetry}
G02B17/0828 (Off-axis or unobscured systems in which all of the mirrors share a) appears on 40 US grants and 30 published applications in this corpus.
Search patents in G02B- Granted patents
- 40
- Published applications
- 30
- Assignees
- 15
- Inventors
- 44
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 3 | 1 |
| 2004 | 2 | 4 |
| 2005 | 4 | 2 |
| 2006 | 4 | 3 |
| 2007 | 1 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 3 | 0 |
| 2017 | 0 | 3 |
| 2018 | 1 | 2 |
| 2019 | 1 | 1 |
| 2020 | 3 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical system and projector10 Mar 2026US 12,572,063 B2Seiko Epson Corporation
- Image display device and projection optical system23 Aug 2022US 11,425,345 B2Sony Corporation
- Image display device and projection optical system7 Dec 2021US 11,194,242 B2Sony Corporation
- Image forming optical system, and imaging apparatus and projecting apparatus having the same3 Aug 2021US 11,079,579 B2Canon Kabushiki Kaisha
- Wafer defect inspection and review systems19 May 2020US 10,656,098 B2KLA-Tencor Corporation
- Head-up display device19 Jun 2025US 2025/0199309 A1Nippon Seiki Co., Ltd.
- Projection system and projector30 May 2024US 2024/0176221 A1Seiko Epson Corporation
- Optical system and projector8 Jun 2023US 2023/0176465 A1Seiko Epson Corporation
- Image display device and projection optical system29 Jul 2021US 2021/0235048 A1Sony Corporation
- Image display device and projection optical system7 May 2020US 2020/0142291 A1Sony Corporation
Most cited
By later US patents
- Exposure apparatus, optical projection apparatus and a method for adjusting the optical projection apparatus256US 6,795,169 B2Nikon Corporation · 2004
- Microlithographic reduction projection catadioptric objective91US 6,636,350 B2Carl-Zeiss-Stiftung · 2003
- Exposure apparatus, optical projection apparatus and a method for adjusting the optical projection apparatus90US 5,729,331 ANikon Corporation · 1998
- Reflection type reduction projection optical system70US 4,812,028 ANikon Corporation · 1989
- Restrictive off-axis field optical system58US 4,469,414 AThe Perkin-Elmer Corporation · 1984