Method and apparatus for calibration of light-modulating array
US6898377B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Jul 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
One embodiment disclosed relates to a method for calibrating an array of light-modulating elements. The method includes illuminating the array of elements, modulating an intensity of light diffracted by the elements over a modulation range, and measuring the modulated light intensity from each element of the array using a linear detector. Other embodiments disclosed relate to an apparatus and system for calibrating an array of light-modulating elements. The apparatus includes a light source for illuminating the array of elements and a linear detector for measuring light intensities at points along a line segment. The apparatus is configured so that modulated light from each of the elements impinges upon a different point of the line segment. The system includes means for modulating an intensity of light diffracted by the elements over a modulation range and a detector for measuring the modulated light intensity from each element of the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.