Patent · US Active

Laser diode apparatus

US9537285B2 · kind B2 · utility

0Cited by

4References

17Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Markus Horn · Straubing, DE
Andreas Rozynski · Regensburg, DE
Karsten Auen · Regensburg, DE
Stephan Haneder · Regensburg, DE
Thomas Dobbertin · Regensburg, DE

Key dates

Filing date	Apr 25, 2014
Grant date	Jan 3, 2017
Priority date	—
Expiry date	Apr 25, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/4087
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Laser diode apparatus, comprising a carrier (1) having a carrier top (11), a laser diode chip (4) arranged on the carrier top (11) emitting, during operation, electromagnetic radiation through a radiating face (5), which radiating face (5) runs perpendicularly to the carrier top (11), and at least one optical element (6) to deflect at least some of the electromagnetic radiation radiated by the laser diode chip (4) perpendicularly to the carrier top (11). By the use of a plurality of laser diode chips having wavelengths that differ very slightly from one another, speckles can be reduced. By means of a retarder plate (8) between the laser diode chip and the optical element it is possible to influence the polarization. A polarization cube enables the deflected light beam bundles to fully cover one another as differently polarized light beam bundles.

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