G01D 5/34794
Optical encoders using the vernier principle, i.e. incorporating two or more tracks
Official title: {Optical encoders using the Vernier principle, i.e. incorporating two or more tracks having a (n, n+1, ...) relationship}
G01D5/34794 (Optical encoders using the vernier principle, i.e. incorporating two or more tracks) appears on 37 US grants and 35 published applications in this corpus.
Search patents in G01D- Granted patents
- 37
- Published applications
- 35
- Assignees
- 25
- Inventors
- 65
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 2 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 9 |
| 2015 | 6 | 6 |
| 2016 | 9 | 0 |
| 2017 | 2 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 3 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 4 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical sensing assembly and encoder utilizing vernier effect and multi-stage position synthesis30 Jun 2026US 12,669,351 B2Delta Electronics, Inc.
- Optical sensing assembly and encoder23 Jun 2026US 12,663,297 B2Delta Electronics, Inc.
- Digital adaptive optics encoder module5 Aug 2025US 12,379,575 B2The United States of America as represented by the Secretary of the Navy
- Position detection device and position detection method26 Mar 2024US 11,940,303 B2Sony Corporation
- Encoder3 Oct 2023US 11,774,270 B2Mitutoyo Corporation
- Optical sensing assembly and encoder21 Aug 2025US 2025/0264344 A1Delta Electronics, Inc.
- Optical sensing assembly and encoder21 Aug 2025US 2025/0264345 A1Delta Electronics, Inc.
- Mitigating the accumulative error in relative-measurement dfos24 Apr 2025US 2025/0130076 A1NEC Laboratories America, Inc.
- Encoder and attachment method20 Feb 2025US 2025/0060230 A1Panasonic Intellectual Property Management Co., Ltd.
- Digital Adaptive Optics Encoder Module1 Feb 2024US 2024/0036295 A1The United States of America as represented by the Secretary of the Navy
Most cited
By later US patents
- Absolute encoder utilizing light of different wavelengths to reduce cross-talk92US 7,465,917 B2Avago Technologies General IP (Singapore) Pte. Ltd. · 2008
- Shaft position encoder24US 4,730,110 ASpaulding Instruments · 1988
- Adaptable resolution optical encoder having structured illumination and spatial filtering13US 9,018,578 B2Mitutoyo Corporation · 2015
- Optical position measuring system with a graduation that causes essentially only first orders of diffraction11US 6,541,761 B1Dr. Johannas Heidenhain GmbH · 2003
- Optical displacement encoder having plural scale grating portions with spatial phase offset of scale pitch8US 9,080,899 B2Mitutoyo Corporation · 2015