| 摘要 |
PURPOSE: To simplify the assembling of a semiconductor laser and a collimate lens. CONSTITUTION: An optical box 5 in which a rotary polygon mirror 3 is housed is provided with an attaching hole 5b individually attaching the semiconductor laser 1 and the collimate lens 2, and the collimate lens 2 is attached to it, thereafter the laser beam L1 of the semiconductor laser 1 is taken out from the monitoring opening 5e of the optical box 5 to the outside, the optical axis adjustment and the focus adjustment of the semiconductor laser 1 are preformed, and the laser 1 is fixed to the attaching hole 5b by adhesive material 6. The number of assembly parts is reduced compared with the case when the semiconductor laser 1 and the collimate lens 2 are unitized, and the number of times of the optical axis adjustment is reduced, thereby simplifying the assembling. |
