Active self-monitoring binocular calibration target
US11385471B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2022 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Feb 28, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0181
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for providing two spaced-apart parallel light beams wherein the space between the two spaced-apart parallel light beams is adjustable, the system including: a first beam splitter configured for reflecting a light beam from a light source to create a first light beam; a second beam splitter configured for reflecting a transmitted light beam from the light beam from the light source to create a second light beam; a third beam splitter configured for transmitting the first light beam and reflecting the first light beam to create a third light beam, the first beam splitter and the third beam splitter are disposed along a first central axis; a fourth beam splitter configured for transmitting the second light beam and reflecting the second light beam to create a fourth light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.