G02F 2203/28
Focussing or defocussing
Official title: focussing or defocussing
G02F2203/28 (Focussing or defocussing) appears on 178 US grants and 180 published applications in this corpus.
Search patents in G02F- Granted patents
- 178
- Published applications
- 180
- Assignees
- 113
- Inventors
- 387
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 3 |
| 2004 | 2 | 4 |
| 2005 | 5 | 9 |
| 2006 | 6 | 6 |
| 2007 | 5 | 9 |
| 2008 | 2 | 11 |
| 2009 | 11 | 6 |
| 2010 | 8 | 11 |
| 2011 | 3 | 6 |
| 2012 | 11 | 8 |
| 2013 | 7 | 15 |
| 2014 | 7 | 13 |
| 2015 | 20 | 16 |
| 2016 | 14 | 8 |
| 2017 | 3 | 7 |
| 2018 | 4 | 13 |
| 2019 | 10 | 15 |
| 2020 | 11 | 2 |
| 2021 | 11 | 9 |
| 2022 | 6 | 2 |
| 2023 | 7 | 3 |
| 2024 | 2 | 1 |
| 2025 | 3 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device and method for controlling focus of a laser beam10 Mar 2026US 12,572,051 B2Mycronic AB
- Electro-active lenses with curved substrates having stepped or tiered surfaces11 Nov 2025US 12,468,207 B2e-Vision Smart Optics, Inc.
- Systems and methods for people counting using beam-forming passive infrared sensors having a dynamically configurable field of view14 Oct 2025US 12,442,690 B2Signify Holding B. V.
- Liquid crystal diffractive devices with nano-scale pattern and methods of manufacturing the same8 Jul 2025US 12,353,101 B2Magic Leap, Inc.
- Apparatus for eye tracking28 May 2024US 11,994,674 B2DigiLens Inc.
- Multi-Depth Liquid Crystal Electrode Layer Lens19 Feb 2026US 2026/0050197 A1e-Vision Smart Optics, Inc.
- Variable-focus liquid crystal lens20 Nov 2025US 2025/0355303 A1Nanchang Virtual Reality Research Institute Co., Ltd.
- Liquid crystal diffractive devices with nano-scale pattern and methods of manufacturing the same18 Sep 2025US 2025/0291218 A1Magic Leap, Inc.
- Electrode structure for foveal lens device13 Jun 2024US 2024/0192524 A1Universite Laval
- Liquid crystal diffractive devices with nano-scale pattern and methods of manufacturing the same21 Sep 2023US 2023/0296945 A1Magic Leap, Inc.
Most cited
By later US patents
- Variable focus liquid crystal lens system263US 4,190,330 ABell Telephone Laboratories, Incorporated · 1980
- Adaptive liquid crystal lens198US 4,572,616 ASyracuse University · 1986
- Optical device containing a liquid crystal element for changing optical characteristics of a lens element167US 5,815,233 ACitizen Watch Co., Ltd. · 1998
- Liquid crystal lenses having a Fresnel lens157US 4,904,063 AOlympus Optical Co., Ltd. · 1990
- Apparatus for eye tracking132US 9,456,744 B2DigiLens Inc. · 2016