Design of microlens on pixel array
US7687757B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2009 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Jan 29, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8063
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for designing a microlens array on a pixel array is disclosed. A radial distance of each pixel from a central pixel in a pixel array is calculated, in which the central pixel acts as an origin of an X-Y coordinate. A chief ray angle of each pixel is determined according to the corresponding radial distance. A microlens shift with respect to the corresponding pixel is determined according to the corresponding chief ray angle. Each microlens shift combines an X-axis direction shift with a Y-axis direction shift, and the X-axis direction shift ratio is different from the Y-axis direction shift ratio. A plurality of microlenses is arranged according to the corresponding microlens shifts to form a microlens array on the pixel array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.