G02B 5/1861
Reflection gratings characterised by their structure
Official title: {Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials (G02B5/1809, G02B5/1828, G02B5/1833, G02B5/1838 and G02B5/1847 take precedence)}
G02B5/1861 (Reflection gratings characterised by their structure) appears on 668 US grants and 784 published applications in this corpus.
Search patents in G02B- Granted patents
- 668
- Published applications
- 784
- Assignees
- 391
- Inventors
- 1,545
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
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| 1989 | 5 | 0 |
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| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
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| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 3 |
| 2002 | 10 | 9 |
| 2003 | 8 | 12 |
| 2004 | 8 | 12 |
| 2005 | 6 | 9 |
| 2006 | 8 | 19 |
| 2007 | 10 | 14 |
| 2008 | 7 | 16 |
| 2009 | 7 | 13 |
| 2010 | 12 | 22 |
| 2011 | 11 | 20 |
| 2012 | 19 | 28 |
| 2013 | 11 | 29 |
| 2014 | 15 | 24 |
| 2015 | 26 | 49 |
| 2016 | 28 | 42 |
| 2017 | 40 | 49 |
| 2018 | 46 | 53 |
| 2019 | 57 | 53 |
| 2020 | 57 | 72 |
| 2021 | 40 | 43 |
| 2022 | 55 | 50 |
| 2023 | 33 | 50 |
| 2024 | 40 | 36 |
| 2025 | 40 | 32 |
| 2026 | 22 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Laser interferometer and method for controlling laser interferometer15 Sep 2026US 12,736,828 B2Seiko Epson Corporation
- Adjustment method and adjustment apparatus for mutual parallelism of two back-to-back gratings1 Sep 2026US 12,724,220 B2Shanghai Institute of Measurement and Testing Technology
- Multi-layer high-efficiency dielectric grating with improved manufacturability18 Aug 2026US 12,710,572 B2II-VI Deleware, Inc.
- Optical isolator based on volume Bragg gratings18 Aug 2026US 12,710,578 B2University of Central Florida Foundation, Inc.
- Projection unit comprising a volume hologram having a volume grating, and projection device having a projection unit18 Aug 2026US 12,710,651 B2Carl Zeiss Jena GmbH
- Optical waveguide device and ar display apparatus1 Oct 2026US 2026/0299292 A1Beijing BOE Technology Development Co., Ltd.
- Optical Anti-Counterfeiting Element and Optical Anti-Counterfeiting Product17 Sep 2026US 2026/0273986 A1China Banknote Printing and Minting Corp.
- Waveguide and diffraction grating for augmented reality or virtual reality display for reducing the visible appearance of grating structures10 Sep 2026US 2026/0267143 A1Snap Inc.
- Systems and methods using a pair of rotated volume bragg gratings for spectral phase modulation3 Sep 2026US 2026/0259357 A1University of Central Florida Research Foundation, Inc.
- Method of manufacturing relief-type diffraction grating20 Aug 2026US 2026/0243932 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Embedded relay lens for head-up displays or the like239US 7,656,585 B1Microvision, Inc. · 2010
- Multilayer dielectric diffraction gratings238US 5,907,436 AThe Regents of the University of California · 1999
- Multibeam diffraction grating-based backlighting195US 9,128,226 B2Leia Inc. · 2015
- High efficiency optical diffraction device172US 7,454,103 B22008
- High NA solid catadioptric focusing device having a flat kinoform phase profile153US 6,212,153 B1Read-Rite Corporation · 2001