H04N 1/0289
Light diffusing elements
Official title: {Light diffusing elements, e.g. plates or filters (optical diffusing elements per se G02B5/02)}
H04N1/0289 (Light diffusing elements) appears on 149 US grants and 137 published applications in this corpus.
Search patents in H04N- Granted patents
- 149
- Published applications
- 137
- Assignees
- 68
- Inventors
- 276
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 5 |
| 2002 | 6 | 5 |
| 2003 | 6 | 5 |
| 2004 | 5 | 3 |
| 2005 | 2 | 8 |
| 2006 | 4 | 3 |
| 2007 | 2 | 2 |
| 2008 | 0 | 4 |
| 2009 | 4 | 14 |
| 2010 | 5 | 10 |
| 2011 | 5 | 9 |
| 2012 | 8 | 5 |
| 2013 | 9 | 7 |
| 2014 | 14 | 7 |
| 2015 | 6 | 4 |
| 2016 | 7 | 6 |
| 2017 | 3 | 5 |
| 2018 | 7 | 7 |
| 2019 | 5 | 5 |
| 2020 | 2 | 5 |
| 2021 | 5 | 4 |
| 2022 | 1 | 2 |
| 2023 | 3 | 5 |
| 2024 | 3 | 2 |
| 2025 | 2 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Diffusing member, illuminating device, image reading apparatus, and image forming apparatus to improve diffusivity of light with suppressing a decrease of incident light on an illuminated region of an original16 Jun 2026US 12,656,552 B2Canon Kabushiki Kaisha
- Document reader having an optical filter with variable light transmission5 Aug 2025US 12,381,990 B2E-Seek, Inc.
- Image reading device10 Jun 2025US 12,326,556 B1Mitsubishi Electric Corporation
- Reading device, output device, and image forming device1 Oct 2024US 12,108,005 B2FUJIFILM Business Innovation Corp.
- Lighting device and inspection device with light shield irradiation port configured to irradiate light only on the inspection region4 Jun 2024US 12,003,689 B2Komori Corporation
- Reading device, reading method, program, inspection device, and printing system9 Apr 2026US 2026/0097602 A1FUJIFILM Corporation
- Document reader with improved illumination26 Jun 2025US 2025/0211695 A1Veridos GmbH
- Image reading device29 May 2025US 2025/0172801 A1Mitsubishi Electric Corporation
- Light guide, illumination device, and contact image sensor8 May 2025US 2025/0150543 A1Nippon Sheet Glass Co., Ltd.
- Optical device and document reading apparatus30 Jan 2025US 2025/0035835 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Colored light source providing intensification of initial source illumination139US 5,255,171 A1993
- Linear illumination device117US 6,268,600 B1Matsushita Electric Industrial Co., Ltd. · 2001
- Light emission element array and manufacturing method thereof107US 4,901,207 AKabushiki Kaisha Toshiba · 1990
- Continuous diffuse illumination method and apparatus106US 5,461,417 ANortheast Robotics LLC · 1995
- Continuous diffuse illumination method and apparatus81US 5,684,530 ANortheast Robotics LLC · 1997