H01J 31/50
Image-conversion or image-amplification tubes, i.e. having optical, x-ray, or analogous input, and
Official title: Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
H01J31/50 (Image-conversion or image-amplification tubes, i.e. having optical, x-ray, or analogous input, and) appears on 507 US grants and 184 published applications in this corpus.
Search patents in H01J- Granted patents
- 507
- Published applications
- 184
- Assignees
- 169
- Inventors
- 736
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 17 | 0 |
| 1978 | 12 | 0 |
| 1979 | 13 | 0 |
| 1980 | 15 | 0 |
| 1981 | 15 | 0 |
| 1982 | 10 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 15 | 0 |
| 1988 | 13 | 0 |
| 1989 | 10 | 0 |
| 1990 | 21 | 0 |
| 1991 | 15 | 0 |
| 1992 | 15 | 0 |
| 1993 | 18 | 0 |
| 1994 | 20 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 13 | 0 |
| 2000 | 13 | 0 |
| 2001 | 16 | 0 |
| 2002 | 5 | 4 |
| 2003 | 8 | 9 |
| 2004 | 5 | 13 |
| 2005 | 11 | 12 |
| 2006 | 14 | 6 |
| 2007 | 8 | 9 |
| 2008 | 8 | 4 |
| 2009 | 4 | 4 |
| 2010 | 4 | 11 |
| 2011 | 9 | 8 |
| 2012 | 6 | 9 |
| 2013 | 3 | 8 |
| 2014 | 5 | 13 |
| 2015 | 12 | 3 |
| 2016 | 8 | 2 |
| 2017 | 7 | 6 |
| 2018 | 3 | 5 |
| 2019 | 8 | 8 |
| 2020 | 9 | 8 |
| 2021 | 7 | 4 |
| 2022 | 2 | 5 |
| 2023 | 4 | 12 |
| 2024 | 12 | 11 |
| 2025 | 9 | 8 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01J 31/506Tubes using secondary emission effect168
- H01J 31/501With an electrostatic electron optic system133
- H01J 31/505Flat tubes50
- H01J 31/56For converting or amplifying images in two or more colours11
- H01J 31/508Multistage converters7
- H01J 31/503With an electromagnetic electron-optic system3
- H01J 31/52Having grid-like image screen through which the electron ray or beam passes2
- H01J 31/54In which the electron ray or beam is reflected by the image1
Recent patents
- Nightvision tube module simplification23 Jun 2026US 12,665,156 B2L3Harris Technologies, Inc.
- Multi-zone display with transparency compensation16 Jun 2026US 12,658,124 B2L3Harris Technologies, Inc.
- Photocathode including nanostructures for extended wavelengths16 Jun 2026US 12,658,397 B2L3Harris Technologies, Inc.
- Electro-optical semi-transparent photonic up-converter3 Mar 2026US 12,567,554 B2L3Harris Technologies, Inc.
- Image intensifier with dynamic optocoupler elements24 Feb 2026US 12,562,332 B1
- Streak tube23 Jul 2026US 2026/0213112 A1Hamamatsu Photonics K.K.
- Microchannel Plate, Preparation Method and Application Thereof1 Jan 2026US 2026/0005006 A1China Building Materials Academy Co., Ltd.
- Substrate stack epitaxies for photocathodes for extended wavelengths18 Dec 2025US 2025/0385062 A1L3Harris Technologies, Inc.
- Nightvision tube module simplification27 Nov 2025US 2025/0364203 A1L3Harris Technologies, Inc.
- Semi-transparent detector array and spatially tunable filter array11 Sep 2025US 2025/0284111 A1L3Harris Technologies, Inc.
Most cited
By later US patents
- Range imaging laser radar113US 4,935,616 AThe United States of America as represented by the Department of Energy · 1990
- Solid state electron amplifier71US 4,990,766 AMurasa International · 1991
- Microchannel image intensifier tube with novel sealing feature66US 5,369,267 AIntevac, Inc. · 1994
- Integrated imaging and ranging lidar receiver64US 5,198,657 AGeneral Atomics · 1993
- Silicon avalanche photodiode array63US 5,021,854 AXsirius Photonics, Inc. · 1991