G02F 1/294
Variable focal length devices
Official title: {Variable focal length devices}
G02F1/294 (Variable focal length devices) appears on 903 US grants and 1,165 published applications in this corpus.
Search patents in G02F- Granted patents
- 903
- Published applications
- 1,165
- Assignees
- 322
- Inventors
- 1,612
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 4 |
| 2003 | 3 | 5 |
| 2004 | 5 | 13 |
| 2005 | 11 | 14 |
| 2006 | 11 | 13 |
| 2007 | 10 | 25 |
| 2008 | 9 | 12 |
| 2009 | 12 | 18 |
| 2010 | 16 | 19 |
| 2011 | 18 | 33 |
| 2012 | 23 | 42 |
| 2013 | 24 | 47 |
| 2014 | 32 | 70 |
| 2015 | 57 | 158 |
| 2016 | 64 | 78 |
| 2017 | 60 | 60 |
| 2018 | 45 | 72 |
| 2019 | 69 | 66 |
| 2020 | 75 | 85 |
| 2021 | 72 | 90 |
| 2022 | 73 | 56 |
| 2023 | 58 | 65 |
| 2024 | 68 | 55 |
| 2025 | 36 | 42 |
| 2026 | 23 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Virtual and augmented reality systems and methods701US 9,791,700 B2Magic Leap, Inc. · 2017
- Variable power lens system321US 4,601,545 A1986
- Stabilized electro-active contact lens298US 6,851,805 B2E-Vision, LLC · 2005
- Variable focus liquid crystal lens system263US 4,190,330 ABell Telephone Laboratories, Incorporated · 1980
- Optical lens system with electro-active lens having alterably different focal lengths247US 6,619,799 B1E-Vision, LLC · 2003