US 12,135,439 B2
Laser module system that incorporates a protective lens
Hebing Zhao, Dongguan (CN)
Assigned to Technomate Manufactory Limited, Hong Kong (CN)
Filed by TECHNOMATE MANUFACTORY LIMITED, Hong Kong (CN)
Filed on Jan. 7, 2022, as Appl. No. 17/570,643.
Prior Publication US 2023/0221470 A1, Jul. 13, 2023
Int. Cl. G02B 3/02 (2006.01)
CPC G02B 3/02 (2013.01) 17 Claims
OG exemplary drawing
 
1. A laser module system, comprising:
a light-emitting diode lighting apparatus;
a laser module comprising a laser-emitting aperture of a first dimension; and
a protective lens disposed over the light-emitting diode lighting apparatus and the laser module to produce a focused illumination from the laser module, the protective lens comprising:
a smaller diameter portion configured to protect the laser module; and
a larger diameter portion that is larger in size than the smaller diameter portion, the larger diameter portion being configured to protect the light-emitting diode lighting apparatus;
wherein the smaller diameter portion is offset by an angle with respect to the larger diameter portion, the angle of offset being configured to eliminate extraneous reflections of light from the laser-emitting aperture of the laser module, the extraneous reflections of light comprising one or more illuminations that are distinct from the focused illumination, the angle of offset for the smaller diameter portion is sized to reflect light off the protective lens back towards the laser module outside of the first dimension of the laser-emitting aperture;
wherein the angle of offset for the smaller diameter portion of the protective lens is selected as a function of a distance between the laser-emitting aperture and the protective lens and the first dimension of the laser-emitting aperture.