Patent · US Expired

Using position-sensitive detectors for wavelength determination

US7310153B2 · kind B2 · utility

61Cited by

16References

25Claims

0Family size

Assignee

Palo Alto Research Center Incorporated · US

Inventors

Peter Kiesel · Palo Alto, US
Oliver Schmidt · Palo Alto, US
Oliver Wolst · Walzbachtal, DE

Key dates

Filing date	Aug 23, 2004
Grant date	Dec 18, 2007
Priority date	—
Expiry date	Mar 27, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG01J3/26
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A chip-size wavelength detector includes a film with laterally varying transmission properties and a position-sensitive detector. The film transmits a different wavelength as a function of lateral position across the film. The position of a spot of light transmitted through the film will shift, depending on the wavelength of the light. The shift is measured by the position-sensitive detector.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.