G02B 27/648
For automatically maintaining a reference alignment
Official title: {for automatically maintaining a reference alignment, e.g. in self-levelling surveying instruments (surveying instruments per se G01C)}
G02B27/648 (For automatically maintaining a reference alignment) appears on 81 US grants and 92 published applications in this corpus.
Search patents in G02B- Granted patents
- 81
- Published applications
- 92
- Assignees
- 64
- Inventors
- 187
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 3 |
| 2003 | 5 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 2 |
| 2006 | 0 | 2 |
| 2007 | 2 | 2 |
| 2008 | 1 | 4 |
| 2009 | 2 | 1 |
| 2010 | 4 | 1 |
| 2011 | 1 | 4 |
| 2012 | 2 | 5 |
| 2013 | 1 | 1 |
| 2014 | 5 | 4 |
| 2015 | 3 | 8 |
| 2016 | 8 | 5 |
| 2017 | 3 | 1 |
| 2018 | 0 | 2 |
| 2019 | 2 | 5 |
| 2020 | 1 | 4 |
| 2021 | 5 | 9 |
| 2022 | 3 | 7 |
| 2023 | 9 | 9 |
| 2024 | 9 | 2 |
| 2025 | 7 | 6 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reducing effects caused by formation of multiple foci in a deformable lens during changes of applanation of surfaces thereof20 Jan 2026US 12,529,904 B2Conexus Lens, Inc.
- Optical system16 Dec 2025US 12,501,136 B2TDK Taiwan Corp.
- Lens apparatus and image pickup apparatus7 Oct 2025US 12,436,406 B2Canon Kabushiki Kaisha
- Reduction of wavefront errors caused by applanation of surfaces of a multi-lenslet compliant lens system26 Aug 2025US 12,399,379 B2Conexus Lens, Inc.
- Camera module12 Aug 2025US 12,386,194 B2Samsung Electro-Mechanics Co., Ltd.
- Reduction of wavefront errors caused by applanation of surfaces of a multi-lenslet compliant lens system27 Nov 2025US 2025/0362525 A1Conexus Lens, Inc.
- Reducing effects caused by formation of multiple foci in a deformable lens during changes of applanation of surfaces thereof11 Sep 2025US 2025/0284137 A1Conexus Lens, Inc.
- System for active boresighting correction for external aircraft sensors22 May 2025US 2025/0164816 A1Rockwell Collins, Inc.
- Reducing effects caused by formation of multiple foci in a deformable lens during changes of applanation of surfaces thereof3 Apr 2025US 2025/0110329 A1Conexus Lens, Inc.
- Optical System for Generating a 360° Laser Line30 Jan 2025US 2025/0035900 A1Hilti Aktiengesellschaft
Most cited
By later US patents
- Construction laser accessory for generating aligned spots57US 5,872,657 ALeveLite Technology, Inc. · 1999
- Construction laser accessory for generating aligned spots or lines46US 6,005,719 ALeveLite Technology, Inc. · 1999
- Laser beam device with apertured reflective element32US 6,542,304 B2Toolz, Ltd. · 2003
- Precision optical systems with performance characterization and uses thereof31US 7,496,241 B1Goodrich Corporation · 2009
- Image detection improvement via compensatory high frequency motions of an undedicated mirror24US 7,862,188 B2FLIR Systems, Inc. · 2011