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

Claim 4:
5. The light source device according to claim 3, further comprising:
a through-hole penetrating the second lens holder at a predetermined location of the second lens holder in a direction parallel to the optical axis;
a groove having an inner diameter shorter than an inner diameter of the through-hole and being carved from a face of the first lens holder in a side of the second lens holder for a predetermined length in the direction parallel to the optical axis; and
a fixing member including a shaft section having an outer diameter shorter than the inner diameter of the through-hole and being insertable into the groove, and a head having an outer diameter longer than the inner diameter of the through-hole and being connected to the shaft section,
wherein the adjustment mechanism is configured to allow the first lens holder and the substrate to be movable by a distance within a margin defined by a difference between the inner diameter of the through-hole and the outer diameter of the shaft section of the fixing member in the plane direction orthogonal to the direction of the optical axis in a state in which the head of the fixing member is in non-contact with a face of the second lens holder.