G02B 6/29328
Diffractive elements operating in reflection
Official title: {Diffractive elements operating in reflection}
G02B6/29328 (Diffractive elements operating in reflection) appears on 145 US grants and 117 published applications in this corpus.
Search patents in G02B- Granted patents
- 145
- Published applications
- 117
- Assignees
- 92
- Inventors
- 301
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 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 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 4 |
| 2003 | 8 | 13 |
| 2004 | 8 | 9 |
| 2005 | 7 | 18 |
| 2006 | 13 | 7 |
| 2007 | 11 | 6 |
| 2008 | 1 | 2 |
| 2009 | 5 | 2 |
| 2010 | 4 | 0 |
| 2011 | 1 | 3 |
| 2012 | 1 | 0 |
| 2013 | 3 | 3 |
| 2014 | 1 | 3 |
| 2015 | 3 | 4 |
| 2016 | 6 | 5 |
| 2017 | 3 | 3 |
| 2018 | 5 | 3 |
| 2019 | 3 | 7 |
| 2020 | 2 | 4 |
| 2021 | 9 | 5 |
| 2022 | 4 | 1 |
| 2023 | 5 | 3 |
| 2024 | 4 | 6 |
| 2025 | 4 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Double-layered antisymmetric two mode Bragg gratings14 Oct 2025US 12,442,981 B2Cisco Technology, Inc.
- Systems and methods for wavelength locking in optical sensing systems26 Aug 2025US 12,402,224 B2
- Package structure having grating coupler and manufacturing method thereof5 Aug 2025US 12,379,556 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Demultiplexer11 Mar 2025US 12,248,189 B2Rockley Photonics Limited
- Waveguide heating in LIDAR systems12 Nov 2024US 12,140,801 B2SiLC Technologies, Inc.
- High mis-alignment tolerate co-package optics28 May 2026US 2026/0147169 A1International Business Machines Corporation
- Manufacturing method of package structure having grating coupler2 Oct 2025US 2025/0306301 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Two active layer waveguide architectures with two or more split reflective and transmissive ic pupils for the visible light spectrum31 Jul 2025US 2025/0244534 A1Magic Leap, Inc.
- Gradient-based tunable echelle grating mux/demuxes3 Jul 2025US 2025/0216628 A1Apple Inc.
- High efficiency optical coupler9 Jan 2025US 2025/0012954 A1Taiwan Semiconductor Manufacturing Company.Ltd
Most cited
By later US patents
- Optical wavelength division multiplexing/demultiplexing system228US 4,773,063 AUniversity of Delaware · 1988
- Planar holographic optical device for beam expansion and display228US 6,169,613 AYeda Research & Devel Co., Ltd. · 2001
- Holographic optical devices for the transmission of optical signals of a plurality of channels222US 5,682,255 AYeda Research and Development Co. Ltd. · 1997
- Alternating sequential half duplex communication system218US 4,979,170 AQUALCOMM Incorporated · 1990
- Planar holographic optical device212US 5,966,223 AYeda Research and Development Co. Ltd. · 1999