Micro-lens configuration for small lens focusing in digital imaging devices
US7557337B2 · kind B2 · utility
12Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2005 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Oct 25, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved image sensor wherein a first micro-lens array comprised of one or more micro-lenses is positioned over a cavity such that incoming light is focused on the photo sensors of the image sensor. The first micro-lens array may collimate and focus incoming light onto the photo sensors of the image sensor, or may collimate incoming light and direct it to a second micro-lens array which then focuses the light onto the photo sensors. A method of fabricating the improved image sensor is also provided wherein the cavity and first micro-lens array are formed by use of a sacrificial material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.