G02B 5/021
The diffusion taking place at the element's surface
Official title: {the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures}
G02B5/021 (The diffusion taking place at the element's surface) appears on 1,964 US grants and 2,666 published applications in this corpus.
Search patents in G02B- Granted patents
- 1,964
- Published applications
- 2,666
- Assignees
- 825
- Inventors
- 4,708
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 18 | 0 |
| 2000 | 17 | 0 |
| 2001 | 26 | 18 |
| 2002 | 17 | 29 |
| 2003 | 24 | 45 |
| 2004 | 33 | 56 |
| 2005 | 29 | 65 |
| 2006 | 40 | 83 |
| 2007 | 42 | 97 |
| 2008 | 44 | 133 |
| 2009 | 46 | 131 |
| 2010 | 89 | 120 |
| 2011 | 52 | 71 |
| 2012 | 68 | 108 |
| 2013 | 70 | 95 |
| 2014 | 63 | 111 |
| 2015 | 75 | 136 |
| 2016 | 92 | 138 |
| 2017 | 113 | 154 |
| 2018 | 98 | 165 |
| 2019 | 147 | 148 |
| 2020 | 125 | 171 |
| 2021 | 131 | 134 |
| 2022 | 122 | 116 |
| 2023 | 92 | 111 |
| 2024 | 106 | 108 |
| 2025 | 77 | 72 |
| 2026 | 45 | 51 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Light diffuser6 Oct 2026US 12,753,903 B2Signify Holding B. V.
- Optical film, backlight, and display29 Sep 2026US 12,748,245 B23M Innovative Properties Company
- Method for scanning field correction at least of a laser scanner device, laser scanner device, scatter pattern element, scatter pattern holding device and scanning field correction system22 Sep 2026US 12,742,963 B2Novanta Europe GmbH
- Progressive frost in a luminaire8 Sep 2026US 12,729,831 B2Robe Lighting s.r.o.
- Light extracting substrate for organic light emitting diode1 Sep 2026US 12,724,179 B2Vitro Flat Glass LLC
- Illumination line generation by double-duty diffusion1 Oct 2026US 2026/0299175 A1Cognex Corporation
- Display device and light diffusion optical film thereof1 Oct 2026US 2026/0299176 A1Twin Beam Co., Ltd.
- Electronic device1 Oct 2026US 2026/0299185 A1Innolux Corporation
- Light diffusion sheet, backlight unit, liquid crystal display device, and information apparatus24 Sep 2026US 2026/0287798 A1Keiwa Inc.
- Light Management System with Distributed Light Input Ports and Light-Converting Layer24 Sep 2026US 2026/0293368 A1
Most cited
By later US patents
- Light directing film having variable height structured surface and light directing article constructed therefrom296US 5,771,328 AMinnesota Mining and Manufacturing Company · 1998
- Sensor configuration for substantial spacing from a small aperture267US 6,831,268 B2Gentex Corporation · 2004
- Light diffuser with variable diffusion224US 6,846,098 B2Eastman Kodak Company · 2005
- Variable pitch structured optical film202US 5,919,551 A3M Innovative Properties Company · 1999
- Optical film and liquid crystal display device using the film159US 5,600,462 AInternational Business Machines Corporation · 1997