G02B 15/14
Optical objectives with means for varying the magnification: by axial movement of
Official title: by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B15/14 (Optical objectives with means for varying the magnification: by axial movement of) appears on 5,485 US grants and 4,636 published applications in this corpus.
Search patents in G02B- Granted patents
- 5,485
- Published applications
- 4,636
- Assignees
- 469
- Inventors
- 2,751
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 15 | 0 |
| 1978 | 23 | 0 |
| 1979 | 19 | 0 |
| 1980 | 25 | 0 |
| 1981 | 27 | 0 |
| 1982 | 18 | 0 |
| 1983 | 27 | 0 |
| 1984 | 35 | 0 |
| 1985 | 26 | 0 |
| 1986 | 31 | 0 |
| 1987 | 56 | 0 |
| 1988 | 56 | 0 |
| 1989 | 70 | 0 |
| 1990 | 39 | 0 |
| 1991 | 57 | 0 |
| 1992 | 56 | 0 |
| 1993 | 81 | 0 |
| 1994 | 70 | 0 |
| 1995 | 54 | 0 |
| 1996 | 93 | 0 |
| 1997 | 84 | 0 |
| 1998 | 132 | 0 |
| 1999 | 105 | 0 |
| 2000 | 109 | 0 |
| 2001 | 94 | 43 |
| 2002 | 80 | 73 |
| 2003 | 87 | 101 |
| 2004 | 92 | 137 |
| 2005 | 94 | 155 |
| 2006 | 171 | 183 |
| 2007 | 186 | 203 |
| 2008 | 178 | 199 |
| 2009 | 201 | 233 |
| 2010 | 190 | 207 |
| 2011 | 188 | 268 |
| 2012 | 212 | 243 |
| 2013 | 234 | 218 |
| 2014 | 225 | 240 |
| 2015 | 220 | 217 |
| 2016 | 180 | 168 |
| 2017 | 189 | 161 |
| 2018 | 129 | 183 |
| 2019 | 164 | 162 |
| 2020 | 139 | 206 |
| 2021 | 153 | 180 |
| 2022 | 162 | 220 |
| 2023 | 137 | 174 |
| 2024 | 167 | 154 |
| 2025 | 179 | 181 |
| 2026 | 108 | 127 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G02B 15/144Having four groups only1,970
- G02B 15/16With interdependent non-linearly related movements between one lens or lens group, and1,845
- G02B 15/143Having three groups only1,382
- G02B 15/145Having five groups only1,285
- G02B 15/142Having two groups only836
- G02B 15/146Having more than five groups595
- G02B 15/22With movable lens means specially adapted for focusing at close distances288
- G02B 15/15Compensation by means of only one movement or by means of only71
Recent patents
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- Optical assembly8 Oct 2026US 2026/0309898 A1Optotune Switzerland AG
- Ophthalmic lens8 Oct 2026US 2026/0309962 A1Young Optics Inc.
- Optical apparatus1 Oct 2026US 2026/0299252 A1Canon Kabushiki Kaisha
- Composite optical element and optical system including the same1 Oct 2026US 2026/0299264 A1Canon Kabushiki Kaisha
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Most cited
By later US patents
- Imaging lens device and imaging apparatus171US 7,809,256 B2Sony Corporation · 2010
- Objective lens system for endoscopes147US 4,976,522 AOlympus Optical Co., Ltd. · 1990
- Zoom lens141US 5,000,551 ANikon Corporation · 1991
- Zoom lens and image pick up apparatus including the same141US 7,187,504 B2Canon Kabushiki Kaisha · 2007
- Three-group zoom lens132US 6,654,180 B2Fuji Photo Optical Co., Ltd. · 2003