G02B 6/29305
As bulk element, i.e. free space arrangement external to a light guide
Official title: {as bulk element, i.e. free space arrangement external to a light guide}
G02B6/29305 (As bulk element, i.e. free space arrangement external to a light guide) appears on 917 US grants and 753 published applications in this corpus.
Search patents in G02B- Granted patents
- 917
- Published applications
- 753
- Assignees
- 385
- Inventors
- 1,418
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 8 | 0 |
| 1988 | 14 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 7 | 0 |
| 1999 | 15 | 0 |
| 2000 | 18 | 0 |
| 2001 | 33 | 8 |
| 2002 | 52 | 75 |
| 2003 | 53 | 104 |
| 2004 | 67 | 61 |
| 2005 | 64 | 59 |
| 2006 | 62 | 46 |
| 2007 | 55 | 30 |
| 2008 | 45 | 26 |
| 2009 | 30 | 43 |
| 2010 | 26 | 18 |
| 2011 | 21 | 23 |
| 2012 | 28 | 20 |
| 2013 | 23 | 21 |
| 2014 | 18 | 22 |
| 2015 | 18 | 17 |
| 2016 | 16 | 16 |
| 2017 | 24 | 23 |
| 2018 | 15 | 15 |
| 2019 | 16 | 21 |
| 2020 | 24 | 19 |
| 2021 | 20 | 20 |
| 2022 | 12 | 18 |
| 2023 | 18 | 15 |
| 2024 | 11 | 13 |
| 2025 | 5 | 8 |
| 2026 | 12 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G02B 6/2931Diffractive element operating in reflection568
- G02B 6/29311Diffractive element operating in transmission432
- G02B 6/29313Characterised by means for controlling the position or direction of light incident288
- G02B 6/29307Components assembled in or forming a solid transparent unitary block126
- G02B 6/29308Diffractive element having focusing properties106
Recent patents
- Optical isolator based on volume Bragg gratings18 Aug 2026US 12,710,578 B2University of Central Florida Foundation, Inc.
- Beam combining grating with integrated apodizer11 Aug 2026US 12,704,667 B2Raytheon Company
- Wavelength agile multiplexing11 Aug 2026US 12,704,682 B2Apple Inc.
- Architecture for wavelength multiplexers23 Jun 2026US 12,663,587 B2Chamartin Laboratories LLC
- High-power multiplexer and demultiplexer for hollow core fiber dense wavelength-division multiplexing (DWDM) applications23 Jun 2026US 12,663,588 B2Microsoft Technology Licensing, LLC
- A system for directing incident light onto spatial light modulator planes30 Jul 2026US 2026/0219457 A1Huber+Suhner Polatis Limited
- Photonic devices and systems including photonic devices21 May 2026US 2026/0140317 A1Infineon Technologies Austria AG
- Wavelength selective switch with multiple deflector arrays7 May 2026US 2026/0126591 A1O-Net Technologies (Canada) Inc.
- Systems and methods using multi-wavelength single-pulse raman spectroscopy30 Apr 2026US 2026/0118178 A1University of Maryland, Baltimore County
- Wavelength Selective Device and Corresponding Switching Device30 Apr 2026US 2026/0118587 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Broadband light source system and method and light source combiner281US 6,570,659 B2LightLab Imaging, Inc. · 2003
- Wavelength-selective optical add/drop using tilting micro-mirrors256US 5,960,133 ATellium, Inc. · 1999
- Micro-mechanical, anti-reflection, switched optical modulator array and fabrication method228US 5,943,158 ALucent Technologies Inc. · 1999
- Alternating sequential half duplex communication system218US 4,979,170 AQUALCOMM Incorporated · 1990
- Frequency-selective optical switch employing a frequency dispersive element, polarization dispersive element and polarization modulating elements208US 5,414,540 ABell Communications Research, Inc. · 1995