Longitudinal interference fringe pattern projection lens, optical system, and three-dimensional image acquisition apparatus
US7830605B2 · kind B2 · utility
2Cited by
1References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 2007 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Oct 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/208
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A longitudinal interference fringe pattern projection lens with a lens body is provided. The lens body includes a lens first surface that has two convex portions or two concave portions that extend in parallel to each other in a constant direction and have the same shape, and a lens second surface. Laser light passing through one convex or concave portion interferes with laser light passing through the other convex or concave portion to form a longitudinal interference fringe pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.