Asymmetric TIR lenses producing off-axis beams
US6924943B2 · kind B2 · utility
91Cited by
59References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Jul 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an improvement of a total internal reflection lens whereby a tilted symmetry axis leads to a net deflection of the output beam away from the surface normal of the exit surface. Linear TIR lenses have a net deflection transverse to their focal strip. Circular TIR lens profiles going beyond 90° are tilted to bring the rim level with the source, the deflected rays exiting the lens to form an off-axis beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.