G01N 21/8806
Specially adapted optical and illumination features
Official title: {Specially adapted optical and illumination features}
G01N21/8806 (Specially adapted optical and illumination features) appears on 3,236 US grants and 3,693 published applications in this corpus.
Search patents in G01N- Granted patents
- 3,236
- Published applications
- 3,693
- Assignees
- 1,538
- Inventors
- 7,251
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 13 | 0 |
| 1991 | 17 | 0 |
| 1992 | 14 | 0 |
| 1993 | 20 | 0 |
| 1994 | 18 | 0 |
| 1995 | 21 | 0 |
| 1996 | 21 | 0 |
| 1997 | 22 | 0 |
| 1998 | 39 | 0 |
| 1999 | 30 | 0 |
| 2000 | 36 | 0 |
| 2001 | 44 | 15 |
| 2002 | 29 | 57 |
| 2003 | 64 | 61 |
| 2004 | 49 | 100 |
| 2005 | 57 | 91 |
| 2006 | 71 | 123 |
| 2007 | 79 | 110 |
| 2008 | 84 | 96 |
| 2009 | 93 | 119 |
| 2010 | 91 | 79 |
| 2011 | 76 | 76 |
| 2012 | 62 | 75 |
| 2013 | 75 | 101 |
| 2014 | 77 | 136 |
| 2015 | 103 | 165 |
| 2016 | 138 | 164 |
| 2017 | 158 | 181 |
| 2018 | 150 | 205 |
| 2019 | 231 | 243 |
| 2020 | 216 | 210 |
| 2021 | 172 | 202 |
| 2022 | 164 | 219 |
| 2023 | 159 | 200 |
| 2024 | 159 | 241 |
| 2025 | 215 | 219 |
| 2026 | 151 | 205 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 2021/8822Dark field detectionIndexing code480
- G01N 2021/8848Polarisation of lightIndexing code296
- G01N 2021/8845Multiple wavelengths of illumination or detectionIndexing code272
- G01N 2021/8812Diffuse illuminationIndexing code147
- G01N 2021/8835Adjustable illuminationIndexing code142
- G01N 2021/8829Shadow projection or structured backgroundIndexing code133
- G01N 2021/8809Adjustment for highlighting flawsIndexing code87
- G01N 2021/8841Illumination and detection on two sides of objectIndexing code83
All 9 subgroupsShow fewer
Recent patents
- Conveyor health inspection method6 Oct 2026US 12,754,143 B2GM Global Technology Operations LLC
- Method for identifying defects in materially integral connections6 Oct 2026US 12,754,144 B2Fraunhofer Gesselschaft zur Förderung der Angewandten Forschung e. V.
- Vision inspection apparatus and vision inspection method6 Oct 2026US 12,755,365 B2
- Optical measurement device for inspection of discontinuities in aerostructures29 Sep 2026US 12,748,052 B2Spirit AeroSystems, Inc.
- Method for inspecting for surface defects on a cast part made of single-crystal metal and system for implementing same29 Sep 2026US 12,748,054 B2Safran
- Photodetector inspection apparatus and photodetector inspection method8 Oct 2026US 2026/0309579 A1Mitsubishi Electric Corporation
- Dark field defect inspection system and inspection method thereof8 Oct 2026US 2026/0309637 A1Samsung Electronics Co., Ltd.
- Inspection system for edge and bevel inspection of semiconductor structures8 Oct 2026US 2026/0309638 A1Camtek Ltd.
- Spectroscopic based contaminant detection system8 Oct 2026US 2026/0309642 A1
- Inspection systems, devices, and methods using polarized light8 Oct 2026US 2026/0309644 A1General Electric Company
Most cited
By later US patents
- Apparatus and method providing substantially two-dimensionally uniform irradiation542US 6,649,921 B1Fusion UV Systems, Inc. · 2003
- Device and system for processing image data representing bar codes540US 8,720,783 B2Hand Held Products, Inc. · 2014
- Systems and methods for providing illumination in machine vision systems300US 6,624,597 B2Color Kinetics Incorporated · 2003
- Illumination system and method for generating an image of an object284US 5,519,496 AApplied Intelligent Systems, Inc. · 1996
- Methods and systems for determining a critical dimension and a thin film characteristic of a specimen248US 6,633,831 B2KLA-Tencor Technologies Corporation · 2003