Patent ID: 9477145
Filing Date: 2016-10-25
CPC Classification: G03B,H01S,Y10T

Claim Text:
1. A light source device comprising: a laser light emitting element comprising a cylinder portion, a flange portion that projects outwards of the cylinder portion from a circumferential edge of a rear end of the cylinder portion, and lead wire terminals that extend from a rear end face of the flange portion; a collimator lens that makes light emitted from the laser light emitting element into parallel light; a collimator lens holder comprising a lens mounting depressed portion that holds the collimator lens and a hole portion that communicates with the lens mounting depressed portion and which accommodates therein the cylinder portion; and a light source element holder that holds the laser light emitting element in a predetermined position on a front surface thereof and which includes a lead wire outlet hole portion that accommodates the lead wire terminals and which penetrates the light source element holder from the front surface thereof to a rear surface thereof, wherein a front surface of the flange portion is fastened by the perimeter of a rear end of the hole portion so as to press the laser light emitting element against the front surface of the light source element holder to thereby fix the laser light emitting element to the light source element holder, wherein an adhesion fixing member is filled in the lead wire outlet hole portion so that the laser light emitting element is adhesively fixed to the light source element holder, wherein the lead wire outlet hole portion is formed larger in diameter at a rear surface side thereof than that at a front surface side thereof, and wherein the laser light emitting element and the adhesion fixing member which is filled in the lead wire outlet hole portion are adhesively fixed.