Image sensor having integrated infrared-filtering optical device and related method
US7329856B2 · kind B2 · utility
33Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2004 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Aug 24, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensing device is disclosed having a die formed with an array of photosensing sites and a structure of optical material having infrared absorbing characteristics formed over the photosensing sites. An embodiment is disclosed in which the structure of optical material having infrared absorbing characteristics is formed as an array of microlenses for directing visible image light onto the photosensing sites and at the same time filtering out infrared wavelengths that interfere with image capture. Alternatively, the structure may be designed to filter out other ranges of wavelengths outside of the visible spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.