Optical receiving device, free space optics transmission apparatus, receiving apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorHidenobu Hamada
Life of this patent
Estimating the term…
Abstract
An optical receiving device includes an optical receiving element and a light collecting portion having an output surface close to or in contact with the optical receiving surface of the optical receiving element. The dispersion plane at an arbitrary point on the line connecting an arbitrary point on an input surface of the light collecting portion to the optical receiving point where light inputted on the arbitrary point on the input surface is received on the optical receiving surface of the optical receiving element is flat, and the normal to the dispersion plane is parallel to the line.
Claims16
An optical receiving device comprising:
- an optical receiving element;
- and
- a light collecting portion having an output surface close to or in contact with an optical receiving surface of the optical receiving element, wherein a dispersion plane at an arbitrary point on a line connecting an arbitrary point on an input surface of the light collecting portion to an optical receiving point where light inputted on the arbitrary point on the input surface is received on the optical receiving surface is flat, and the normal to the dispersion plane is parallel to the line.
A receiving apparatus comprising:
- a light transmission path;
- an optical receiving device including an optical receiving portion and a light collecting portion that focuses light inputted from the light transmission path onto the optical receiving portion independent of an input angle of the light;
- and
- a mechanical portion changes a relative position between the light transmission path and the optical receiving portion.
Dependencies are inferred from the claim text.