H04N 1/02845
Using an elongated light source
Official title: {using an elongated light source, e.g. tubular lamp, LED array}
H04N1/02845 (Using an elongated light source) appears on 683 US grants and 554 published applications in this corpus.
Search patents in H04N- Granted patents
- 683
- Published applications
- 554
- Assignees
- 191
- Inventors
- 1,080
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 11 | 0 |
| 1991 | 9 | 0 |
| 1992 | 13 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 19 | 0 |
| 1998 | 14 | 0 |
| 1999 | 14 | 0 |
| 2000 | 18 | 0 |
| 2001 | 19 | 6 |
| 2002 | 15 | 22 |
| 2003 | 17 | 21 |
| 2004 | 22 | 43 |
| 2005 | 15 | 22 |
| 2006 | 19 | 22 |
| 2007 | 11 | 22 |
| 2008 | 12 | 26 |
| 2009 | 19 | 43 |
| 2010 | 28 | 36 |
| 2011 | 20 | 40 |
| 2012 | 33 | 22 |
| 2013 | 51 | 34 |
| 2014 | 43 | 23 |
| 2015 | 34 | 20 |
| 2016 | 16 | 13 |
| 2017 | 21 | 35 |
| 2018 | 24 | 22 |
| 2019 | 24 | 18 |
| 2020 | 17 | 13 |
| 2021 | 16 | 8 |
| 2022 | 5 | 7 |
| 2023 | 3 | 14 |
| 2024 | 9 | 8 |
| 2025 | 5 | 9 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 1/02865Using an array of light sources or a combination of such arrays321
- H04N 1/0287Using a tubular lamp or a combination of such lamps215
- H04N 1/0285In combination with at least one reflector which is in fixed relation196
- H04N 1/02855In combination with a light guide154
- H04N 1/0286In combination with a light integrating, concentrating or defusing cavity50
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Most cited
By later US patents
- Linear light source240US 5,607,227 ASanyo Electric Co., Ltd. · 1997
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- LED array and partitive driving method therefor using overlapping activation periods138US 5,063,462 ACanon Kabushiki Kaisha · 1991