Optical characteristic measuring apparatus
AssigneeOtsuka Electronics Co., Ltd.
InventorsKazuaki Ohkubo, Hisashi Shiraiwa
Life of this patent
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Abstract
An optical characteristic measuring apparatus includes a hemispheric portion having a reflective surface on its inner wall, and a plane portion arranged to close an opening of the hemispheric portion and having a reflective surface on an inner-wall side of the hemispheric portion. The plane portion includes a first window occupying a range including a substantial center of curvature of the hemispheric portion for attaching a light source to the first window. At least one of the hemispheric portion and the plane portion includes a plurality of second windows arranged in accordance with a predetermined rule for extracting light from inside the hemispheric portion.
Claims10
An optical characteristic measuring apparatus comprising:
- a hemispheric portion having a reflective surface on an inner wall of the hemispheric portion;
- a plane portion arranged to close an opening of said hemispheric portion and having a reflective surface on an inner-wall side of said hemispheric portion;
- and
- an optical guide,
- said plane portion including a first window occupying a range including a substantial center of curvature of said hemispheric portion for attaching a light source to the first window,
- at least one of said hemispheric portion and said plane portion including a plurality of second windows arranged in accordance with a predetermined rule for extracting light from inside said hemispheric portion, and
- said optical guide being configured to optically connect said plurality of second windows to an optical receiver for receiving light inside said hemispheric portion and including an optical coupler coupling respective light beams from said plurality of second windows.
An optical characteristic measuring apparatus comprising:
- a hemispheric portion having a reflective surface on an inner wall of the hemispheric portion;
- a plane portion arranged to close an opening of said hemispheric portion and having a reflective surface on an inner-wall side of said hemispheric portion;
- and
- optical fibers,
- said plane portion including a first window occupying a range including a substantial center of curvature of said hemispheric portion for attaching a light source to the first window,
- at least one of said hemispheric portion and said plane portion including a plurality of second windows arranged in accordance with a predetermined rule for extracting light from inside said hemispheric portion, and
- each of said optical fibers being configured to optically connect each of said plurality of second windows to an optical receiver, said optical fibers being bundled together to be connected to the optical receiver.
Dependencies are inferred from the claim text.