G02B 15/08
By changing the rear part
Official title: by changing the rear part
G02B15/08 (By changing the rear part) appears on 50 US grants and 32 published applications in this corpus.
Search patents in G02B- Granted patents
- 50
- Published applications
- 32
- Assignees
- 21
- Inventors
- 77
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 2 | 0 |
| 2011 | 0 | 2 |
| 2012 | 2 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 4 |
| 2017 | 4 | 3 |
| 2018 | 2 | 2 |
| 2019 | 1 | 1 |
| 2020 | 4 | 4 |
| 2021 | 3 | 5 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 2 | 0 |
| 2025 | 1 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rear attachment lens and image pickup optical system using the same1 Sep 2026US RE51,021 E1Canon Kabushiki Kaisha
- Zoom lens17 Feb 2026US 12,554,048 B2Opto Engineering S.P.A.
- Optical apparatus19 Aug 2025US 12,393,003 B2ColorLink Japan, Ltd.
- Reduction optical system and image pickup apparatus27 Feb 2024US 11,914,121 B2Canon Kabushiki Kaisha
- Zoom lens and image pickup apparatus2 Jan 2024US 11,860,347 B2Canon Kabushiki Kaisha
- Rear Optical Device, Assembly Forming a Modular Zoom, and Method for Changing the Zoom of a Camera Lens30 Jul 2026US 2026/0219556 A1Thales
- Optical system, image projection apparatus, and imaging apparatus29 Jan 2026US 2026/0029697 A1Panasonic Intellectual Property Management Co., Ltd.
- Zoom lens31 Aug 2023US 2023/0273499 A1Opto Engineering S.P.A.
- Optical apparatus3 Nov 2022US 2022/0350121 A1ColorLink Japan, Ltd.
- Reduction optical system and image pickup apparatus14 Oct 2021US 2021/0318526 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Camera system and an optical adapter to reduce image format size35US 5,499,069 AEastman Kodak Company · 1996
- Compact zoom lens system of a relatively high zoom ratio capable of providing a wide field angle20US 4,634,236 AMinolta Camera Kabushiki Kaisha · 1987
- Focal length changeable lens system19US 4,983,026 AMinolta Camera Kabushiki Kaisha · 1991
- Rear conversion lens16US 4,206,971 ANippon Kogaku K. K. · 1980
- Rear conversion lens15US 5,253,112 ANikon Corporation · 1993