The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2020
Filed:
Nov. 15, 2018
Nlight, Inc., Vancouver, WA (US);
David Martin Hemenway, Beaverton, OR (US);
nLIGHT, Inc., Vancouver, WA (US);
Abstract
A high-power laser diode assembly uses a greater number of emitters in a laser diode package or uses larger, wider laser diode emitters to produce higher-power laser output. Each assembly design option includes a meniscus slow axis collimator lens having a light entrance surface imparting strong negative lens surface power to diverge an incident beam outwards and a light exit surface imparting even stronger positive lens surface power to collimate the rapidly diverging beam. In one example, a 5 mm focal length meniscus collimator lens, as compared to a standard 12 mm focal length collimator lens, can reduce by 7 mm the physical path from the collimator lens to the laser diode. In another example, a 15 mm focal length meniscus collimator lens with the same back focal length as that of a standard 12 mm collimator facilitates increasing chip-on-submount width from 200 μm to 250 μm.