G02B 27/44
Grating systems
Official title: Grating systems; Zone plate systems (G02B27/46 takes precedence)
G02B27/44 (Grating systems) appears on 125 US grants and 152 published applications in this corpus.
Search patents in G02B- Granted patents
- 125
- Published applications
- 152
- Assignees
- 88
- Inventors
- 355
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 4 |
| 2012 | 2 | 4 |
| 2013 | 0 | 8 |
| 2014 | 8 | 12 |
| 2015 | 6 | 8 |
| 2016 | 5 | 4 |
| 2017 | 10 | 4 |
| 2018 | 9 | 15 |
| 2019 | 8 | 10 |
| 2020 | 13 | 4 |
| 2021 | 9 | 18 |
| 2022 | 8 | 11 |
| 2023 | 12 | 23 |
| 2024 | 11 | 11 |
| 2025 | 15 | 6 |
| 2026 | 9 | 8 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Field of view expansion by image light redirection6 Oct 2026US 12,754,430 B2Meta Platforms Technologies, LLC
- Optical device and method of manufacture thereof22 Sep 2026US 12,741,478 B2De La Rue International Limited
- 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
- Display apparatus for providing expanded viewing window28 Jul 2026US 12,693,537 B2Samsung Electronics Co., Ltd.
- Method and system utilizing inverted master for holographic recording23 Jun 2026US 12,663,572 B2DigiLens Inc.
- Directional illuminator and display apparatus with switchable diffuser17 Sep 2026US 2026/0276984 A1Meta Platforms Technologies, LLC
- 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.
- Light-guiding device, optical module, and head-mounted display device27 Aug 2026US 2026/0251902 A1Goertek Optical Technology (Shanghai) Co., Ltd.
- Image light guide with zoned diffractive optic20 Aug 2026US 2026/0243941 A1Vuzix Corporation
- Dynamically actuable diffractive optical element23 Jul 2026US 2026/0211255 A1Magic Leap, Inc.
Most cited
By later US patents
- Head mounted display108US 8,842,368 B2BAE SYSTEMS plc · 2014
- Waveguides with extended field of view89US 9,791,703 B1Microsoft Technology Licensing, LLC · 2017
- Energy dispersion device61US 8,885,161 B2Spectroclick, Inc. · 2014
- Waveguide having a phase-matching region44US 10,578,876 B1Facebook Technologies, LLC · 2020
- Virtual image device34US 9,052,414 B2Microsoft Technology Licensing, LLC · 2015