Microlenses for optical assemblies and related methods
US7505650B1 · kind B1 · utility
16Cited by
6References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Mar 28, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Microlenses are formed on a substrate having a first absorption within an operational wavelength range, and a second absorption outside the operational wavelength range, wherein the second absorption is greater than the first absorption. One or more waveguides are coupled with a processing light beam having a wavelength outside the operational wavelength range, and the processing light beam is directed through the waveguides to the substrate to locally heat and expand the substrate so as to form microlenses on the substrate surface. The processing light beam is terminated to stop heating of the substrate and fix the microlenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.