Controlling lens shape in a microlens array
US7068432B2 · kind B2 · utility
49Cited by
7References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2004 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Aug 28, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/802
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semi-conductor based imager includes a microlens array having microlenses with modified focal characteristics. The microlenses are made of a microlens material, the melting properties of which are selectively modified to obtain different shapes after a reflow process. Selected microlenses, or portions of each microlens, are modified, by exposure to ultraviolet light, for example, to control the microlens shape produced by reflow melting. Controlling the microlens shape allows for modification of the focal characteristics of selected microlenses in the microlens array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.