| 摘要 |
PROBLEM TO BE SOLVED: To provide light collection horns used for receiving light by a multi- dimensional input device through optical space transmission that can obtain a wide field angle. SOLUTION: The optical receiver of this invention employs the light collection horns to obtain a wide field angle and uses an optical fiber to lead an optical signal from the light collection horns to an optical sensor, where the optical signal is converted into an electric signal. |
