G02B 17/0852
Having a field corrector only
Official title: {having a field corrector only}
G02B17/0852 (Having a field corrector only) appears on 283 US grants and 206 published applications in this corpus.
Search patents in G02B- Granted patents
- 283
- Published applications
- 206
- Assignees
- 119
- Inventors
- 354
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 3 |
| 2002 | 3 | 7 |
| 2003 | 6 | 10 |
| 2004 | 9 | 18 |
| 2005 | 13 | 9 |
| 2006 | 15 | 14 |
| 2007 | 7 | 10 |
| 2008 | 5 | 10 |
| 2009 | 9 | 11 |
| 2010 | 9 | 15 |
| 2011 | 16 | 7 |
| 2012 | 9 | 3 |
| 2013 | 5 | 6 |
| 2014 | 5 | 10 |
| 2015 | 5 | 8 |
| 2016 | 8 | 17 |
| 2017 | 14 | 7 |
| 2018 | 12 | 11 |
| 2019 | 7 | 11 |
| 2020 | 10 | 8 |
| 2021 | 9 | 2 |
| 2022 | 3 | 6 |
| 2023 | 5 | 3 |
| 2024 | 3 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Projection system and projector9 Sep 2025US 12,411,399 B2Seiko Epson Corporation
- Projection lens system and image projection apparatus6 May 2025US 12,292,552 B2Ricoh Company, Ltd.
- Optical system, optical apparatus, imaging apparatus, and method for manufacturing optical system and imaging apparatus25 Jun 2024US 12,019,225 B2Nikon Corporation
- Projection system and projector with first optical system and second optical system11 Jun 2024US 12,007,678 B2Seiko Epson Corporation
- Observation optical system and display apparatus26 Mar 2024US 11,940,623 B2Canon Kabushiki Kaisha
- Projection system and projector27 Jul 2023US 2023/0236491 A1Seiko Epson Corporation
- Reflective eyepiece optical system and head-mounted near-to-eye display device9 Feb 2023US 2023/0042152 A1Shenzhen NED Optics Co., Ltd
- Reflective eyepiece optical system and head-mounted near-to-eye display device9 Feb 2023US 2023/0042416 A1Shenzhen NED Optics Co., Ltd
- Projection lens system and image projection apparatus1 Sep 2022US 2022/0276472 A1Ricoh Company, Ltd.
- Projection system and projector30 Jun 2022US 2022/0206252 A1Seiko Epson Corporation
Most cited
By later US patents
- Image display device and adjustment for alignment267US 6,631,994 B2Mitsubishi Denki Kabushiki Kaisha · 2003
- Multi-special decentered catadioptric optical system135US 5,841,574 ARecon/Optical, Inc. · 1998
- Imaging optical system94US 5,716,118 AMinolta Co., Ltd. · 1998
- Wide spectral bandwidth virtual image display optical system93US 5,436,763 AHughes Aircraft Company · 1995
- Lens88US 8,054,556 B2Young Optics Inc. · 2011