| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of parts and to improve assembling in the case of using an LD and a collimator lens. SOLUTION: A lens housing part 158 is formed on the holder main body 152 of a holder 150 and an LD housing part is formed on a surface on the opposite side of the part 158, and they communicate with each other through a communicative hole. A cylindrical body 160 to which the collimator lens 58 is attached is housed in the lens housing part, and held by a wedge 178 and screws 188 and 190. At this time, the optical axis of the collimator lens can be accurately adjusted based on the optical axis of the LD by performing the positional adjustment of the cylindrical body by the drawing of the screw 182 abutting on the screws 188 and 190 and the wedge.
|
