Patent ID: 11971163
Assignee: USHIO DENKI KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A light source device comprising:
a plurality of LED elements that are dispersed and arranged in a plane direction orthogonal to an optical axis;
a first optical system that converts light emitted from each of the plurality of LED elements into collimated light; and
a second optical system that focuses the collimated light emitted from the first optical system at a latter stage of the first optical system,
wherein the first optical system includes a first collimating optical system including a first set of collimating lenses disposed corresponding to the plurality of LED elements and a second collimating optical system including a second set of collimating lenses disposed corresponding to the plurality of LED elements at a latter stage of the first collimating optical system,
and
an adjustment mechanism located outside of the first optical system for adjusting a relative optical positional relation of the second collimating optical system with respect to the plurality of LED elements and the first collimating optical system when viewed in a direction of the optical axis in a state in which the plurality of LED elements and the first collimating optical system are fixed.