Reflective mirror structure
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United States of America Patent
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Issued Date -
Dec 28, 2006
app pub date -
Jun 13, 2005
filing date -
Jun 13, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention discloses an improved reflective mirror structure used together with a sensor, and the reflective mirror includes at least one elliptic curved surface, and the elliptic curved surface has a first focus and a second focus, and the sensing area of the sensor is located at the second focus. With the characteristic of having dual foci on the elliptic curved surface, the light beams incident from different directions are passed through the first focus of the elliptic curved surface and then reflected from the elliptic curved surface towards the second focus and received by the sensor, and such design makes the detecting range of the sensor larger than 180 degrees.
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