Patent ID: 11862941
Assignee: SCHOTT AG
Field: Optics (Instruments)
Classification: CPC H  G | IPC G  H

Claim 33:
34. 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, the multi-laser arrangement further comprising monitor diodes positioned behind the lasers on a carrier associated therewith, wherein the monitor diodes are arranged on the carrier which includes ceramics or is made of ceramics, and wherein a normal direction of the surface of the carrier on which the monitor diodes are arranged is inclined relative to a main emission direction of at least one of the lasers, with an inclination relative to the main emission direction in an angular range from 3° to 15°, preferably from 5° to 10°, most preferably from 6° to 8°.