Tunable micro-lens arrays
US7297474B2 · kind B2 · utility
4Cited by
48References
5Claims
0Family size
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Key dates
| Filing date | Jul 13, 2006 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus includes a planar substrate and an array of substantially transparent spherical micro-lenses forming a pattern. The pattern has an internal two-dimensional lattice symmetry on the planar substrate. Each micro-lens includes a convex bulge or a concave depression in a surface of the planar substrate. The micro-lenses and substrate include hydrogel that swells and contracts in a manner that is responsive to an environmental condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.