Abstract: In order to provide a satellite information autonomous distribution satellite capable of collecting attribute information for satellites after failure or damage occurs at or to the satellite, an information collection device is operated by a second power supply provided independently from the first power supply operating the satellite bus system, is provided separately from the satellite bus system, and collects and stores attribute information. The light receiver is provided separately from the satellite bus system and forms a prescribed control signal when light sent from the information collection station is received.

Abstract: In order to provide a satellite information autonomous distribution satellite capable of collecting attribute information for satellites after failure or damage occurs at or to the satellite, an information collection device is operated by a second power supply provided independently from the first power supply operating the satellite bus system, is provided separately from the satellite bus system, and collects and stores attribute information. The light receiver is provided separately from the satellite bus system and forms a prescribed control signal when light sent from the information collection station is received.

Abstract: The present invention relates to an optical beam detection device for detecting deviation in the optical axis of light beams from a reference optical axis, the optical beam detection device provided with a converging member for converging the light beams; a light receiving surface that is disposed near the position where light beams that have an optical axis that coincides with the reference optical axis are converged by the converging member; an optical path deflector for deflecting light beams that have an optical axis that deviates from the reference optical axis, after they have passed through the converging member; and a light detecting element for detecting the light beams that have been deflected by the optical path deflector.

Abstract: A decentering optical system which takes a substantially parallel beam as input light, including a prism whose refractive index is greater than 1, and in which: at the boundary surface of the prism, at least five optical surfaces, which are arranged so as to be mutually decentering or inclined, are formed, in order along one optical path which the input light pursues, as a first surface, a second surface, a third surface, a fourth surface, and a fifth surface; at least two among these five optical surfaces are rotationally asymmetric surfaces; and, upon an optical path along which the input light proceeds in order from the first surface to the fifth surface and is emitted to the exterior of the prism, along with at least one real image being formed interior of the prism, an exit pupil is formed at the exterior of the prism.

Abstract: An alignment adjusting system for use in an optical system in an optical transceiver includes an optical antenna having a main mirror and a submirror, both of which are provided around an optical axis of the optical antenna. An optical coupling unit couples the optical antenna to the optical transceiver. The optical antenna transmits a beam of transmitting light output from the optical transceiver to an optical antenna of a destination station after sequentially reflecting the beam of transmitting light by the submirror and the main mirror. A return-reflection mirror provided in either one of the main mirror and the submirror return-reflects a part of the beam of transmitting light.