| 摘要 |
PURPOSE:To reduce the cost for repair by forming a fitting hole which penetrates a housing coaxially with the optical axis of light whose optical path is converted, and fitting an optical path converting means fitting member from one end part of the fitting hole and fixing a photoelectric converting element from the other end part while aligning their optical axes with each other. CONSTITUTION:The housing 13 has the fitting hole 13a penetrating the housing in the right-left direction, holes 13b and 13c crossing it at right angles, and a recessed part 13d where a laser beam source 14 is fitted. A cylindrical lens support pipe 25 which supports a cylindrical lens 21 is pressed in the fitting hole 13a from the right end part and fixed at a specific position, and then photoelectric converting element 15 supported on a holder 26 is fitted and fixed to the right end part of the fitting hole 13a. The fitting hole 13a is bored coaxially with the optical axis B of an optical system 16 and the optical path converting means which should be positioned specially with high precision is aligned with the optical axis only by fitting and fixing the optical path converting means fitting member where the optical path converting means is fitted in the fitting hole. Consequently, adjusting operation is facilitated and the cost for repair is reduced. |
