G02B 6/0046
Tapered light guide
Official title: {Tapered light guide, e.g. wedge-shaped light guide}
G02B6/0046 (Tapered light guide) appears on 1,396 US grants and 1,470 published applications in this corpus.
Search patents in G02B- Granted patents
- 1,396
- Published applications
- 1,470
- Assignees
- 522
- Inventors
- 2,563
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 11 | 0 |
| 1996 | 10 | 0 |
| 1997 | 13 | 0 |
| 1998 | 13 | 0 |
| 1999 | 22 | 0 |
| 2000 | 32 | 0 |
| 2001 | 28 | 30 |
| 2002 | 31 | 36 |
| 2003 | 52 | 57 |
| 2004 | 36 | 68 |
| 2005 | 37 | 51 |
| 2006 | 47 | 71 |
| 2007 | 38 | 61 |
| 2008 | 40 | 71 |
| 2009 | 51 | 71 |
| 2010 | 61 | 76 |
| 2011 | 59 | 99 |
| 2012 | 59 | 58 |
| 2013 | 74 | 57 |
| 2014 | 44 | 77 |
| 2015 | 42 | 67 |
| 2016 | 56 | 75 |
| 2017 | 61 | 74 |
| 2018 | 48 | 68 |
| 2019 | 96 | 66 |
| 2020 | 73 | 53 |
| 2021 | 65 | 57 |
| 2022 | 40 | 38 |
| 2023 | 33 | 37 |
| 2024 | 39 | 25 |
| 2025 | 22 | 19 |
| 2026 | 13 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Substrate and method for modifying at least one region of a surface or a portion of a substrate6 Oct 2026US 12,754,371 B2Schott AG
- Inkjet gradient index material to modulate grating diffraction efficiency18 Aug 2026US 12,710,579 B2APPLIED Materials.Inc.
- Illumination device and display device11 Aug 2026US 12,704,722 B2Magnolia White Corporation
- Backlight module2 Jun 2026US 12,645,022 B2AmTRAN Technology Co., Ltd.
- Lighting fixture with waveguide12 May 2026US 12,625,315 B2Cree Lighting USA LLC
- Track lighting system24 Sep 2026US 2026/0287133 A1Signify Holding B. V.
- Display device and method of manufacturing the same3 Sep 2026US 2026/0259449 A1Beijing Boe Display Technology Co., Ltd.
- Decoration film for hidden display25 Jun 2026US 2026/0177734 A1Miraenanotech Co., Ltd.
- System and method for portable, safety lighting4 Jun 2026US 2026/0153664 A1Archangel Device LLC
- Light-guide reflector4 Jun 2026US 2026/0153665 A1BROALUX International Limited
Most cited
By later US patents
- Light guide and lateral illuminator1,026US 6,836,611 B2J. W. Speaker Corporation · 2004
- Thin panel illuminator460US 5,005,108 ALumitex, Inc. · 1991
- Efficient collimation of light with optical wedge331US 7,970,246 B2Microsoft Corporation · 2011
- Faceted light pipe322US 5,050,946 ACompaq Computer Corporation · 1991
- Backlighting system with faceted light pipes307US 5,202,950 ACompaq Computer Corporation · 1993