G01J 5/0802
Optical filters
G01J5/0802 (Optical filters) appears on 335 US grants and 288 published applications in this corpus.
Search patents in G01J- Granted patents
- 335
- Published applications
- 288
- Assignees
- 234
- Inventors
- 770
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 3 |
| 2003 | 3 | 2 |
| 2004 | 4 | 9 |
| 2005 | 3 | 1 |
| 2006 | 6 | 6 |
| 2007 | 6 | 10 |
| 2008 | 3 | 3 |
| 2009 | 6 | 15 |
| 2010 | 5 | 8 |
| 2011 | 10 | 13 |
| 2012 | 9 | 13 |
| 2013 | 10 | 16 |
| 2014 | 13 | 11 |
| 2015 | 10 | 11 |
| 2016 | 11 | 13 |
| 2017 | 15 | 10 |
| 2018 | 17 | 15 |
| 2019 | 14 | 20 |
| 2020 | 17 | 19 |
| 2021 | 16 | 21 |
| 2022 | 14 | 20 |
| 2023 | 14 | 15 |
| 2024 | 19 | 18 |
| 2025 | 23 | 7 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Broadband camera for flame detection and detection of a thermal image of the scene of the flame25 Aug 2026US 12,720,175 B2LightPath Technologies, Inc.
- Warm filter configuration for reducing effects of reflected infrared radiation systems and methods14 Jul 2026US 12,680,879 B2FLIR Systems, Inc.
- Microbolometer detectors with optical absorber structures for detection of terahertz radiation14 Jul 2026US 12,680,881 B2Technologies Luqia
- Earbud with a built-in thermometer14 Apr 2026US 12,604,124 B2Precision Sensors Design Inc.
- Radiation thermometer, temperature measurement method, and temperature measurement program13 Jan 2026US 12,523,532 B2Horiba, Ltd.
- Systems, apparatus, and methods for multi-wavelength monitoring for semiconductor manufacturing23 Jul 2026US 2026/0209988 A1APPLIED Materials.Inc.
- Infrared detector and associated production method23 Jul 2026US 2026/0210767 A1Lynred
- Tunable filter for reducing combustion gases in thermal images and related systems and methods9 Jul 2026US 2026/0194393 A1FLIR Systems, Inc.
- Image measurement tool systems and methods2 Jul 2026US 2026/0185876 A1FLIR Systems, Inc.
- Window cavity wafers4 Jun 2026US 2026/0153380 A1Materion Corporation
Most cited
By later US patents
- Device and method for locating inflamed plaque in an artery318US 5,871,449 A1999
- Switchable resonant filter for optical radiation262US 5,231,532 ATexas Instruments Incorporated · 1993
- Infrared thermometer with automatic calibration155US 4,784,149 AOptical Sensors Incorporated · 1988
- Multi-point pyrometry with real-time surface emissivity compensation110US 5,156,461 ATexas Instruments Incorporated · 1992
- Thermal imaging system with a monolithic focal plane array and method109US 5,512,748 ATexas Instruments Incorporated · 1996