G02B 27/425
In illumination systems
Official title: {in illumination systems (mask illumination systems in photolithographic systems G03F7/70158)}
G02B27/425 (In illumination systems) appears on 324 US grants and 376 published applications in this corpus.
Search patents in G02B- Granted patents
- 324
- Published applications
- 376
- Assignees
- 211
- Inventors
- 703
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 2 |
| 2002 | 2 | 2 |
| 2003 | 5 | 1 |
| 2004 | 0 | 4 |
| 2005 | 3 | 2 |
| 2006 | 2 | 3 |
| 2007 | 3 | 3 |
| 2008 | 1 | 3 |
| 2009 | 2 | 4 |
| 2010 | 2 | 6 |
| 2011 | 2 | 3 |
| 2012 | 4 | 7 |
| 2013 | 3 | 5 |
| 2014 | 4 | 4 |
| 2015 | 3 | 12 |
| 2016 | 9 | 29 |
| 2017 | 21 | 42 |
| 2018 | 21 | 18 |
| 2019 | 38 | 53 |
| 2020 | 40 | 68 |
| 2021 | 36 | 46 |
| 2022 | 39 | 21 |
| 2023 | 33 | 18 |
| 2024 | 28 | 10 |
| 2025 | 11 | 9 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Devices and methods for adjusting lens positions based on encoded light patterns25 Aug 2026US 12,717,137 B1Meta Platforms Technologies, LLC
- Transmissive diffraction grating2 Jun 2026US 12,645,017 B2ASML Netherlands B. V.
- Projector including meta-lens20 Jan 2026US 12,529,826 B2Samsung Electronics Co., Ltd.
- Systems and methods for fabricating microstructures23 Dec 2025US 12,504,642 B2MicroTau IP Pty Lted
- Projector and sensing system used therefor9 Dec 2025US 12,493,195 B1HTC Corporation
- Diffractive optical device providing structured light11 Jun 2026US 2026/0161006 A1Viavi Solutions Inc.
- Diffractive optical element and method for fabricating the diffractive optical element25 Dec 2025US 2025/0389876 A1Himax Technologies Limited
- Optical elements providing collimation and fan-out or diffusion20 Nov 2025US 2025/0355266 A1NIL Technology ApS
- Pattern projector3 Jul 2025US 2025/0216193 A1Himax Technologies Limited
- Apparatus and methods for transmitting light3 Jul 2025US 2025/0216689 A1Illumina, Inc.
Most cited
By later US patents
- Laser illumination device137US 8,224,133 B2SBG Labs, Inc. · 2012
- Luminaire121US 6,478,453 B2Koninklijke Philips Electronics N. V. · 2002
- Laser illumination device111US 8,565,560 B2SBG Labs, Inc. · 2013
- Optical pattern projection108US 8,384,997 B2Primesense Ltd. · 2013
- Multibeam diffraction grating-based color backlighting107US 9,557,466 B2Leia Inc. · 2017