| 摘要 |
An optical position detection device is provided to detect a location of coordinates by using plural half mirrors disposed in a low with a light emitting unit and minimize an error corresponding to light conditions. An optical position detection device comprises a first lighting-emitting unit(10), a first reflecting unit(20), a first light-receiving unit(30), a second lighting-emitting unit(40), a second reflecting unit(50), a second light receiving unit(60), a signal processing unit(70), and a communications unit(80). The first reflecting unit comprises a plurality of half mirrors. In order to divide the light ray emitted from the first light-emitted unit into a plurality of light rays and reflect the divided light rays, the plurality of half mirrors is arranged with the first lighting-emitting unit in a row. The first light receiving unit comprises a light receiving sensor which is arranged in order to receive the plurality of light rays reflected from the first reflecting unit. The second reflecting unit comprises a plurality of half mirrors. In order to divide light ray emitted from a second lighting-emitting unit into a plurality of light rays and reflect the divided light rays so as to cross the light rays reflected from the first reflecting unit, the plurality of half mirrors is arranged with the second lighting-emitting unit in a row. The second light receiving unit comprises a light receiving sensor which is arranged in order to receive the plurality of light rays reflected in the second reflecting unit.
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