G02B 7/28
Systems for automatic generation of focusing signals
G02B7/28 (Systems for automatic generation of focusing signals) appears on 5,037 US grants and 3,331 published applications in this corpus.
Search patents in G02B- Granted patents
- 5,037
- Published applications
- 3,331
- Assignees
- 834
- Inventors
- 5,476
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 33 | 0 |
| 1978 | 25 | 0 |
| 1979 | 41 | 0 |
| 1980 | 56 | 0 |
| 1981 | 71 | 0 |
| 1982 | 79 | 0 |
| 1983 | 59 | 0 |
| 1984 | 78 | 0 |
| 1985 | 85 | 0 |
| 1986 | 73 | 0 |
| 1987 | 79 | 0 |
| 1988 | 94 | 0 |
| 1989 | 116 | 0 |
| 1990 | 122 | 0 |
| 1991 | 106 | 0 |
| 1992 | 122 | 0 |
| 1993 | 141 | 0 |
| 1994 | 98 | 0 |
| 1995 | 81 | 0 |
| 1996 | 135 | 0 |
| 1997 | 104 | 0 |
| 1998 | 112 | 0 |
| 1999 | 81 | 0 |
| 2000 | 75 | 0 |
| 2001 | 65 | 33 |
| 2002 | 64 | 52 |
| 2003 | 56 | 54 |
| 2004 | 64 | 81 |
| 2005 | 52 | 75 |
| 2006 | 54 | 84 |
| 2007 | 38 | 81 |
| 2008 | 42 | 104 |
| 2009 | 101 | 96 |
| 2010 | 94 | 109 |
| 2011 | 80 | 123 |
| 2012 | 87 | 130 |
| 2013 | 107 | 141 |
| 2014 | 169 | 167 |
| 2015 | 144 | 200 |
| 2016 | 194 | 212 |
| 2017 | 181 | 208 |
| 2018 | 186 | 216 |
| 2019 | 226 | 216 |
| 2020 | 190 | 201 |
| 2021 | 148 | 185 |
| 2022 | 174 | 163 |
| 2023 | 132 | 139 |
| 2024 | 121 | 103 |
| 2025 | 114 | 105 |
| 2026 | 63 | 53 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G02B 7/36Using image sharpness techniques1,706
- G02B 7/34Using different areas in a pupil plane1,351
- G02B 7/30Using parallactic triangle with a base line838
- G02B 7/282Autofocusing of zoom lenses345
- G02B 7/285Including two or more different focus detection devices174
- G02B 7/40Using time delay of the reflected waves128
- G02B 7/287Including a sight line detecting device93
Recent patents
- Automatic focusing system29 Sep 2026US 12,748,279 B2Shenzhen Cuttylight Technology Co., Ltd.
- Auto focus using multiple location illumination29 Sep 2026US 12,748,280 B2Applied Materials Israel Ltd.
- Observation system, focus position calculation method, and computer readable medium29 Sep 2026US 12,748,281 B2Evident Corporation
- Camera module and electronic device having same15 Sep 2026US 12,736,771 B2Samsung Electronics Co., Ltd.
- Focal position estimation system, focal position estimation method, focal position estimation program, semiconductor inspection system and biological observation system1 Sep 2026US 12,724,323 B2Hamamatsu Photonics K.K.
- Image capturing apparatus, control method therefor, and storage medium storing control program therefor10 Sep 2026US 2026/0267203 A1Canon Kabushiki Kaisha
- Lens control device, eyeglasses, eyewear, lens control method, lens control program3 Sep 2026US 2026/0259432 A1ViXion Inc.
- Image sensing system and method for imaging3 Sep 2026US 2026/0261776 A1Ventana Medical Systems, Inc.
- Camera system and application processor27 Aug 2026US 2026/0255059 A1Sony Group Corporation
- Sequencer focus quality metrics and focus tracking for periodically patterned surfaces13 Aug 2026US 2026/0235492 A1Illumina, Inc.
Most cited
By later US patents
- Focus module and components with actuator544US 8,687,282 B2Hand Held Products, Inc. · 2014
- Autofocus lens system for indicia readers413US 9,224,022 B2Hand Held Products, Inc. · 2015
- Distance detecting device, focus state detecting device and camera having same409US 5,890,021 ACanon Kabushiki Kaisha · 1999
- Self gating photosurface352US 7,202,898 B13DV Systems Ltd. · 2007
- Optical ranging camera339US 6,057,909 A3DV Systems Ltd. · 2000