| 摘要 |
PROBLEM TO BE SOLVED: To provide a shielding instrument for a semiconductor optical device, which is simple in constitution and is low cost. SOLUTION: A roughly T-shaped magnetic metal plate is bent to make the light-receiving and emitting surface of a semiconductor optical device exposed through an open part 5b and a top plate 5, which is formed with a cross- shaped shielding part 5a and is located at the central part of the device, mounting leg parts 2d and 3d, which are respectively provided at the end parts of the device, for circuit board mounting use, side plates 2 and 3, which are respectively formed with pinching pieces 2a and 3a bent respectively to the inside of the device at positions symmetrical to the top plate and are located on both sides of the device, and a box-shaped body, which consists of a rear plate 4 orthogonally intersecting the side edge parts of the side plates 2 and 3 on both sides of the device and has the two surfaces opened, are formed. The rear plate 4 is bent to the inside of the device, in parallel with the top plate at the positions of a punched hole 4a and a punched groove 4b, the rear and bottom of the device, which is held elastically by the pinching pieces 2a and 3a formed in the side plates 2 and 3, are covered with the rear plate 4 and a shielding instrument 10 is formed. |
