Patent · US Active

Eye-safe laser navigation sensor

US7809035B2 · kind B2 · utility

0Cited by

62References

22Claims

0Family size

Assignee

Cypress Semiconductor Corporation · US

Inventors

Steven Sanders · Scottsdale, US
Gary A. Gibbs · San Jose, US
Ashish Pancholy · Milpitas, US
Gajender Rohilla · Bengaluru, IN
Pulkit Shah · Bengaluru, IN

Key dates

Filing date	May 12, 2006
Grant date	Oct 5, 2010
Priority date	—
Expiry date	Jun 9, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/06808
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The apparatus includes a diode laser and a current source interconnected with the diode laser. Two independent circuits in the current source are configured to limit current flowing through the diode laser. A first current limiter circuit configured to limit a current output from the current source to an anode of the diode laser, and an independent second current limiter circuit configured to limit a current return from a cathode of the diode laser to the current source so that laser output power does not exceed a specified maximum regardless of a single fault in either the first or second current limiter circuits.

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