Double-sided microlens array and method of manufacturing same
US6587274B1 · kind B1 · utility
6Cited by
7References
38Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 20, 2001 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Dec 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0068
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A double-sided microlens array and method has a plurality of first microlenses on a first surface opposite a plurality of second microlenses on a second surface of a transparent medium. At least two optical features are arranged on either of the first or second surfaces to form fiducial marks on the opposing surface in the transparent medium. The fiducial marks enable precise alignment of the microlenses in the first and second plurality of microlens arrays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.