G02B 27/18
Optical systems or apparatus not provided for by any of the groups
Official title: for optical projection, e.g. combination of mirror and condenser and objective {(photographic, cine and overhead projectors G03B21/00; photographic projection printing G03B27/32; photolithographic projectors G03F7/20; projection television H04N5/74; colour projection television H04N9/31)}
G02B27/18 (Optical systems or apparatus not provided for by any of the groups) appears on 616 US grants and 697 published applications in this corpus.
Search patents in G02B- Granted patents
- 616
- Published applications
- 697
- Assignees
- 410
- Inventors
- 1,499
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 8 | 0 |
| 1999 | 12 | 0 |
| 2000 | 9 | 0 |
| 2001 | 5 | 3 |
| 2002 | 8 | 15 |
| 2003 | 14 | 12 |
| 2004 | 12 | 16 |
| 2005 | 12 | 15 |
| 2006 | 14 | 15 |
| 2007 | 12 | 10 |
| 2008 | 5 | 8 |
| 2009 | 5 | 11 |
| 2010 | 8 | 14 |
| 2011 | 4 | 12 |
| 2012 | 9 | 16 |
| 2013 | 5 | 10 |
| 2014 | 8 | 18 |
| 2015 | 10 | 17 |
| 2016 | 15 | 26 |
| 2017 | 25 | 34 |
| 2018 | 24 | 47 |
| 2019 | 46 | 71 |
| 2020 | 40 | 60 |
| 2021 | 49 | 55 |
| 2022 | 43 | 52 |
| 2023 | 41 | 60 |
| 2024 | 51 | 39 |
| 2025 | 43 | 41 |
| 2026 | 26 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical system with waveguide redirecting reflector22 Sep 2026US 12,742,919 B1Apple Inc.
- Dual-light-source red dot sight22 Sep 2026US 12,742,956 B1Guangzhou Saiyili Technology Co., Ltd.
- Dot sight1 Sep 2026US 12,723,842 B2Zhuhai Mefo Optical Instruments Co., Ltd.
- Multi-aperture projector25 Aug 2026US 12,717,153 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Projector with field lens25 Aug 2026US 12,720,020 B2Snap Inc.
- Apparatus and methods to render 3d digital content having multiple views8 Oct 2026US 2026/0310005 A1Texas Instruments Incorporated
- Permanently self-luminous sighting element27 Aug 2026US 2026/0251907 A1Smolsys AG
- Projection system for smart ring visual output23 Jul 2026US 2026/0211497 A1Quanata, LLC
- System for providing an immersive experience using multi-platform smart technology, content streaming, and special effects systems9 Jul 2026US 2026/0192190 A1Infinite Kingdoms LLC
- Miniature laser, micro gunsight, and laser sight device2 Jul 2026US 2026/0185800 A1Huanic Corporation
Most cited
By later US patents
- Projection optical system and exposure apparatus having the projection optical system322US 6,633,365 B2Nikon Corporation · 2003
- Image display device and adjustment for alignment267US 6,631,994 B2Mitsubishi Denki Kabushiki Kaisha · 2003
- Wide field of view projection lenses for compact projection lens systems employing pixelized panels105US 6,324,014 B1Corning Precision Lens · 2001
- Spatial light modulator system98US 5,704,701 ARank Brimar Limited · 1998
- Method and arrangement for aligning a mask pattern relative to a semiconductor substrate95US 4,251,160 AU. S. Philips Corporation · 1981