Spatial optical communication apparatus
AssigneeCanon Kabushiki Kaisha
InventorTetsuo Sakanaka
Life of this patent
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Abstract
In a disclosed spatial optical communication apparatus, the optical-axis deviation correction is possible at the same time for both high-speed angular variation with a small amplitude and low-speed angular variation with a large amplitude, and the apparatus has a function of correcting the optical-axis deviation whose application range is wide and whose correction ability is high. To achieve such function, the spatial optical communication apparatus for performing communication between spaced locations with a light beam is provided with both a light deflecting unit set inside an optical system with a narrow variable angle range and a fast response speed, and an optical system driving unit set outside the optical system with a slow response speed and a wide variable angle range.
Claims8
A spatial optical communication apparatus for performing communication between spaced locations with a light beam when situated in a manner opposed to a spaced partner apparatus, said spatial optical communication apparatus comprising:
- an optical system for effecting at least one of transmission of a light beam to the partner apparatus and reception of a light beam from the partner apparatus;
- first means for varying a directional angle of said optical system, said first means being provided outside said optical system;
- and
- second means for varying at least one of an angle of a light beam transmitted to the partner apparatus and an angle of a light beam received from the partner apparatus, said second means being provided inside said optical system.
Dependencies are inferred from the claim text.