| 摘要 |
PURPOSE:To provide a small-sized laser diode module for bar code reader in which aberration can be corrected easily. CONSTITUTION:A laser diode 42 is mounted on a base 41. A lens holder 44 holding a lens 45 is then mounted on the lens holder mounting section 43 of the base 41. Upon turning an adjusting screw 47, the lens holder 44 turns in the direction of an arrow C to incline the lens 45. |
