| 摘要 |
PURPOSE:To correctly receive signal light even when the titled receiver is used outdoors, by providing a light receiving angle control means which controls the light receiving angle of a light receiving means in accordance with manual operations. CONSTITUTION:A light shielding hood 105 composed of a pair of upper and lower components is provided at the outside of a light receiving lens 104. The light shielding hood 105 is frictionally held by a revolving shaft 113 by utilizing the frictional force of a friction washer 114 provided between the revolving base section 105b of the hood 105 and the head section 113a of the revolving shaft 113 fixed to the main body 6 of this receiver. When the light shielding hood 105 is manually operated by its operating end 105a, it can revolve around the revolving shaft 113 and its opened angle can optionally be set continuously without steps. Therefore, the influences of outside-of-periphery light can be reduced. |
