| 摘要 |
PURPOSE:To provide an alignment system adjusting the disposition of the optical system of an optical communication apparatus more accurately while being compact and lightweight by providing a main mirror, an auxiliary mirror, a reflecting mirror, an optical antenna, and means for detection, movement and movement control. CONSTITUTION:A main mirror 1 (an auxiliary mirror 2) is provided with a reflecting mirror for return, and the focus slippage of transmitted light can be corrected and eliminated in an optical system from an optical communication apparatus to the auxiliary mirror 2 and main mirror 1 (auxiliary mirror 2) of an optical antenna 10. The disposition of the optical system from the optical communication apparatus to the auxiliary mirror 2 or main mirror 1 of the optical antenna 10 through an optical connecting means can be thereby adjusted more accurately while being compact and lightweight. With an alignment system, Al, Mg, Be or the like relatively small in specific gravity and relatively large in heat conductivity is used for the main mirror 1 and auxiliary mirror 2. The weight of a satellite mounted with the light communication apparatus is thereby reduced by a large margin. An MPU 20 controls a PAM 15, auxiliary mirror drive mechanism 2d and a biaxial gimbal 1d, and a CCD sensor 30, a QD sensor 32, a PD sensor 34 detect light. |
