H04N 1/0282
Using a single or a few point light sources
Official title: {Using a single or a few point light sources, e.g. a laser diode}
H04N1/0282 (Using a single or a few point light sources) appears on 612 US grants and 538 published applications in this corpus.
Search patents in H04N- Granted patents
- 612
- Published applications
- 538
- Assignees
- 168
- Inventors
- 962
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 13 | 0 |
| 1994 | 5 | 0 |
| 1995 | 11 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 13 | 0 |
| 1999 | 12 | 0 |
| 2000 | 12 | 0 |
| 2001 | 10 | 8 |
| 2002 | 11 | 10 |
| 2003 | 18 | 14 |
| 2004 | 11 | 12 |
| 2005 | 8 | 18 |
| 2006 | 13 | 17 |
| 2007 | 5 | 11 |
| 2008 | 8 | 24 |
| 2009 | 16 | 50 |
| 2010 | 14 | 14 |
| 2011 | 22 | 35 |
| 2012 | 25 | 23 |
| 2013 | 28 | 30 |
| 2014 | 46 | 36 |
| 2015 | 36 | 35 |
| 2016 | 38 | 24 |
| 2017 | 23 | 35 |
| 2018 | 32 | 42 |
| 2019 | 36 | 20 |
| 2020 | 24 | 17 |
| 2021 | 13 | 14 |
| 2022 | 11 | 13 |
| 2023 | 11 | 11 |
| 2024 | 9 | 10 |
| 2025 | 3 | 12 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical device, image reading unit, and image forming apparatus correcting a width of a slit for reflected light29 Sep 2026US 12,750,452 B2FUJIFILM Business Innovation Corp.
- Image reading device, image forming apparatus, non-transitory computer readable medium storing image reading program, and image reading method comprising a switching mechanism to switch the traveling of light from a light source to an optical path directly irradiating a document or via a traveling change member1 Sep 2026US 12,726,579 B2FUJIFILM Business Innovation Corp.
- Reading device, output device, and image forming apparatus12 May 2026US 12,627,763 B2FUJIFILM Business Innovation Corp.
- Image acquisition system and image acquisition method12 May 2026US 12,627,878 B2Hamamatsu Photonics K.K.
- Optical line sensor3 Feb 2026US 12,541,096 B2Vienex Corporation
- Image reading device, image forming apparatus, non-transitory computer readable medium storing image reading program, and image reading method2 Jul 2026US 2026/0189665 A1FUJIFILM Business Innovation Corp.
- Reading device, reading method, program, inspection device, and printing system9 Apr 2026US 2026/0097602 A1FUJIFILM Corporation
- Illumination device, image reading device, image forming apparatus, inspection device, and illumination method8 Jan 2026US 2026/0012549 A1Ricoh Company, Ltd.
- Image reading apparatus and image forming apparatus20 Nov 2025US 2025/0358378 A1Canon Kabushiki Kaisha
- Image drawing apparatus and driving method for image drawing apparatus13 Nov 2025US 2025/0350699 A1FUJIFILM Corporation
Most cited
By later US patents
- Digitizing scanner232US 6,606,171 B1Howtek, Inc. · 2003
- Led illumination system120US 6,837,605 B2OSRAM Opto Semiconductors GmbH · 2005
- Linear illumination device117US 6,268,600 B1Matsushita Electric Industrial Co., Ltd. · 2001
- Light source assembly for scanning devices utilizing light emitting diodes114US 6,139,174 AHewlett-Packard Company · 2000
- Image sensor unit and image reading apparatus having the unit110US 4,783,700 ACanon Kabushiki Kaisha · 1988