Free space optics communication apparatus and free space optics communication system
First Claim
1. A free space optics communication apparatus which performs communication with another apparatus with light beams, comprising:
- a plurality of light-emitting units, each of the units emitting a light beam which forms a generally elliptical irradiation pattern on a light-receiving unit of the other apparatus having a shorter diameter direction and a longer diameter direction,wherein the plurality of light-emitting units are set in such a way that an overlapping degree of irradiation patterns of light beams from at least two of the plurality of light-emitting units in the shorter diameter direction at the light-receiving unit of the other apparatus is adjusted, and thereby respective optical axes of the plurality of light-emitting units are inclined with different angles each other with respect to a reference axis of the free space optics communication apparatus so that a width of a combined irradiation pattern formed by combining the light beams from the plurality of light-emitting units is 1.5 times or larger than a width of the irradiation pattern formed by one light-emitting unit in the shorter diameter direction at the light-receiving unit of the other apparatus.
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Accused Products
Abstract
A free space optics communication apparatus which can perform stable communication is disclosed. The free space optics communication apparatus has a plurality of light-emitting units each emitting a light beam which forms a generally elliptical irradiation pattern. The plurality of light-emitting units are set such that irradiation patterns of beams from at least two of the plurality of light-emitting units partially overlap at a light-receiving unit of the other apparatus. Further the width of a combined irradiation pattern formed by combining the light beams is 1.5 times or more larger than a width in a shorter diameter direction of an irradiation pattern of a light beam from one light-emitting unit.
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Citations
6 Claims
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1. A free space optics communication apparatus which performs communication with another apparatus with light beams, comprising:
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a plurality of light-emitting units, each of the units emitting a light beam which forms a generally elliptical irradiation pattern on a light-receiving unit of the other apparatus having a shorter diameter direction and a longer diameter direction, wherein the plurality of light-emitting units are set in such a way that an overlapping degree of irradiation patterns of light beams from at least two of the plurality of light-emitting units in the shorter diameter direction at the light-receiving unit of the other apparatus is adjusted, and thereby respective optical axes of the plurality of light-emitting units are inclined with different angles each other with respect to a reference axis of the free space optics communication apparatus so that a width of a combined irradiation pattern formed by combining the light beams from the plurality of light-emitting units is 1.5 times or larger than a width of the irradiation pattern formed by one light-emitting unit in the shorter diameter direction at the light-receiving unit of the other apparatus. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification