OPTICAL PART AND OPTICAL MODULE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an optical part in which an optical filter can be fixed at a setting angle regardless of temperature. SOLUTION: The optical part has an optical filter 2 and a filter fixing means 1, and the filter fixing means 1 has a holding part 6. The end of the optical filter 2 is clamped and fixed by the holding part 6 from the direction which crosses with a filter surface 2a. The holding part 6 is provided with a filter supporting surface 3 which has a setting angle alpha for the optical axis of a light beam made incident on the optical filter 2, and a pressing means 4 to press and fix the end of the optical filter 2 to the filter supporting surface 3 side by elastic force.