Patent ID: 9182272
Filing Date: 2015-11-10
Classification: G01J,H01S

Abstract:
1. A laser module comprising: a laser block that emits a plurality of beams of laser light, the laser block including a plurality of laser elements that each emit one of the plurality of beams of laser light; a collimating lens that receives and collimates the plurality of beams of laser light emitted from the laser blocks, and emits collimated light; and one or more output devices that receive the collimated light emitted from the collimating lens, and output signals corresponding to intensities of the individual beams of collimated light; wherein the one or more output devices each comprise a photodetector area, the photodetector area being disposed facing a direction of the collimating lens on a line which is parallel to a layout direction of the plurality of laser elements and which orthogonally intersects with an optical axis of the collimating lens, the photodetector area also being disposed at a position that receives a portion of collimated light for all the individual beams of collimated light which are emitted.