A61B 3/032
Devices for presenting test symbols or characters
Official title: Devices for presenting test symbols or characters, e.g. test chart projectors (A61B3/036 takes precedence)
A61B3/032 (Devices for presenting test symbols or characters) appears on 930 US grants and 1,094 published applications in this corpus.
Search patents in A61B- Granted patents
- 930
- Published applications
- 1,094
- Assignees
- 480
- Inventors
- 1,654
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 9 | 0 |
| 1996 | 9 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 16 | 0 |
| 2000 | 10 | 0 |
| 2001 | 8 | 4 |
| 2002 | 16 | 12 |
| 2003 | 13 | 8 |
| 2004 | 7 | 15 |
| 2005 | 3 | 22 |
| 2006 | 3 | 12 |
| 2007 | 19 | 18 |
| 2008 | 22 | 29 |
| 2009 | 15 | 27 |
| 2010 | 26 | 25 |
| 2011 | 26 | 35 |
| 2012 | 16 | 28 |
| 2013 | 25 | 27 |
| 2014 | 28 | 32 |
| 2015 | 32 | 47 |
| 2016 | 35 | 49 |
| 2017 | 43 | 96 |
| 2018 | 32 | 46 |
| 2019 | 87 | 62 |
| 2020 | 55 | 65 |
| 2021 | 42 | 62 |
| 2022 | 53 | 88 |
| 2023 | 46 | 84 |
| 2024 | 49 | 59 |
| 2025 | 71 | 62 |
| 2026 | 38 | 80 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Eye tracking color vision tests6 Oct 2026US 12,751,612 B2Verily Health Inc.
- Apparatus and method for measuring visual acuity by using focus-tunable lens6 Oct 2026US 12,754,350 B2Samsung Electronics Co., Ltd.
- Methods and systems for dynamically adjusting eye test sequences in virtual eye tests25 Aug 2026US 12,714,307 B2Zenni Optical, Inc.
- Phoropter and optometry device for testing an individual's eyes18 Aug 2026US 12,708,260 B2Essilor International
- Method and system for evaluating visual acuity of a person18 Aug 2026US 12,708,261 B2Essilor International
- Vision testing device1 Oct 2026US 2026/0294231 A1Fim Medical
- Systems and methods for testing and/or monitoring vision1 Oct 2026US 2026/0294233 A1Tilak Healthcare
- Method for measuring behavioral pattern during gaze shifting, method for determining progressive power lens, and device for measuring behavioral pattern during gaze shifting24 Sep 2026US 2026/0283462 A1Hoya Lens Thailand Ltd.
- Method for evaluating an individual's astigmatism3 Sep 2026US 2026/0256351 A1Siview
- Vision correction simulation tool27 Aug 2026US 2026/0248378 A1Johnson & Johnson Vision Care, Inc.
Most cited
By later US patents
- Vision testing system for testing the sight function of a patient149US 5,331,358 ACarl-Zeiss-Stiftung · 1994
- Force measurement system and a method of testing a subject116US 9,770,203 B1Bertec Corporation · 2017
- Product detector for a steady visual evoked potential stimulator and product detector106US 5,052,401 AWestinghouse Electric Corp. · 1991
- Visual function tester with binocular vision testing105US 5,026,151 AMentor O & O, Inc. · 1991
- Methods and apparatus for diagnosing and remediating reading disorders103US 6,045,515 A2000