| 摘要 |
PURPOSE:To surely shield a laser light source and to improve the efficiency of assembling work by mounting the laser light source, a penetration capacitor for supplying a drive signal and a wiring board in an optical base opening only two faces from the same direction integrally and thereafter closing the opening faces by a two faces shield plate. CONSTITUTION:After a laser diode 2 and the penetration capacitor 10 for supplying the drive signal are mounted to the wiring board 36, the diode 2 and the capacitor 10 are written and held respectively on a recessed part 24 and the opening 32 provided on the upright wall surface of the optical base 22 formed integrally in a rectangular shape by four wall surfaces and whose two faces are opened. Then, the shield plate 26 with an L shape wall surface opposing to the opening of the base 22 is engaged with the closing surfaces of the base 22 by engaging pieces 26A, 26B. Thus, the assembling work is simplified and the efficiency of the work is improved and the base 22 is shielded surely and undesired radiation is reduced. |
