G02B 27/281
Used for attenuating light intensity
Official title: {used for attenuating light intensity, e.g. comprising rotatable polarising elements}
G02B27/281 (Used for attenuating light intensity) appears on 423 US grants and 492 published applications in this corpus.
Search patents in G02B- Granted patents
- 423
- Published applications
- 492
- Assignees
- 316
- Inventors
- 1,061
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 2 |
| 2002 | 4 | 5 |
| 2003 | 3 | 4 |
| 2004 | 3 | 6 |
| 2005 | 3 | 9 |
| 2006 | 5 | 9 |
| 2007 | 9 | 11 |
| 2008 | 9 | 9 |
| 2009 | 2 | 19 |
| 2010 | 8 | 11 |
| 2011 | 12 | 7 |
| 2012 | 7 | 10 |
| 2013 | 11 | 13 |
| 2014 | 12 | 19 |
| 2015 | 9 | 25 |
| 2016 | 19 | 30 |
| 2017 | 27 | 27 |
| 2018 | 22 | 31 |
| 2019 | 31 | 30 |
| 2020 | 26 | 36 |
| 2021 | 25 | 40 |
| 2022 | 23 | 38 |
| 2023 | 30 | 42 |
| 2024 | 32 | 30 |
| 2025 | 31 | 25 |
| 2026 | 12 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Color neutral emissive display with notched reflective polarizer11 Aug 2026US 12,704,737 B23M Innovative Properties Company
- Eye-movement tracking apparatus and electronic device11 Aug 2026US 12,704,739 B2Huawei Technologies Co., Ltd.
- Optical structure including half-silvered mirror and selective reflection film in combination11 Aug 2026US 12,704,740 B2AGC Inc.
- Attenuator device and laser processing apparatus21 Jul 2026US 12,686,078 B2Hamamatsu Photonics K.K.
- Partial coherence mitigation in video measurement systems via illumination apodization7 Jul 2026US 12,674,658 B2Quality Vision International, Inc.
- Switchable mirror for transparent visors6 Aug 2026US 2026/0225432 A1
- Optical isolator23 Jul 2026US 2026/0211273 A1Shin-Etsu Chemical Co., Ltd.
- Display system26 Mar 2026US 2026/0086382 A1AUO Corporation
- Wearable electronic device including polarizing reflector8 Jan 2026US 2026/0010007 A1Samsung Electronics Co., Ltd.
- Piece of Glass and Rotational Motor to Provide Variable Polarization25 Dec 2025US 2025/0389883 A1KLA Corporation
Most cited
By later US patents
- System and method for varying the reflectance or transmittance of light162US 7,411,637 B2ELOP Electro-Optics Industries Ltd. · 2008
- See-through computer display systems149US 9,523,856 B2Osterhout Group, Inc. · 2016
- See-through computer display systems126US 9,529,199 B2Osterhout Group, Inc. · 2016
- See-Through computer display systems120US 9,651,789 B2Osterhout Group, Inc. · 2017
- See-through computer display systems82US 9,651,788 B2Osterhout Group, Inc. · 2017