US 11,862,941 B2
Multi-laser arrangement, in particular an RGB laser module device
Robert Hettler, Kumhausen (DE); Amy Soon Li Ping, Singapore (SG); Ong Wai Li, Johor Bahru (MY); and Artit Aowudomsuk, Bangkok (TH)
Assigned to Schott AG, Mainz (DE)
Filed by SCHOTT AG, Mainz (DE)
Filed on Apr. 20, 2021, as Appl. No. 17/235,582.
Claims priority of application No. 10 2020 110 658.0 (DE), filed on Apr. 20, 2020.
Prior Publication US 2021/0328412 A1, Oct. 21, 2021
Int. Cl. H01S 5/40 (2006.01); H01S 5/02315 (2021.01); H01S 5/02257 (2021.01); H01S 5/02253 (2021.01); H01S 5/02251 (2021.01); H01S 5/00 (2006.01); H01S 5/02218 (2021.01); G02B 27/01 (2006.01); G03B 21/20 (2006.01)
CPC H01S 5/4093 (2013.01) [H01S 5/0014 (2013.01); H01S 5/02218 (2021.01); H01S 5/02251 (2021.01); H01S 5/02253 (2021.01); H01S 5/02257 (2021.01); H01S 5/02315 (2021.01); H01S 5/4031 (2013.01); G02B 27/0172 (2013.01); G03B 21/2033 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A multi-laser arrangement, in particular an RGB laser module, comprising:
a housing including:
a housing cap having at least one opening formed therein, and a transparent element associated therewith for passing electromagnetic radiation; and;
a base plate;
a first laser emitting light in the red spectral range of the visible spectrum;
a second laser emitting light in the green spectral range of the visible spectrum;
a third laser emitting in light in the blue spectral range of the visible spectrum, the first, second and third lasers being arranged within the housing;
an electrical connection line routed through the housing to each respective laser; and
wherein, during operation of the lasers, a majority of the laser's emitted light passes through the transparent element;
wherein each laser
(i) is arranged on a pedestal in the housing;
(ii) is arranged spaced apart from the lower surface of the base plate; and
(iii) is aligned with one another;
wherein a main direction of laser emission is substantially parallel to the base plate of the housing, wherein the housing has a protective means for the transparent element in the form of a portion laterally protruding beyond the transparent element.