US Patent No: 8,164,078
Number of patents in Portfolio can not be more than 2000
Beam irradiation device
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Apr 24, 2012
Issued date -
Mar 23, 2010
filing date -
12/729,587
serial no -
In Force
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Abstract
A beam irradiation device includes a photodetector which receives servo light; a signal processing section which generates a position detection signal based on a detection signal from the photodetector; and a control section which controls the laser light source and the actuator for beam scanning based on the position detection signal. The signal processing section performs a sampling operation with respect to the detection signal from the photodetector at two consecutive sampling timings. The signal processing section includes an A/D converting section which converts a difference between two sampling values obtained by the sampling operation into a digital signal, and a computing section which computes the position detection signal based on the digital signal from the A/D converting section.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 8,000,169 Object detecting apparatus, opening and closing control system for vehicle using object detecting apparatus, and method of detecting upstroke of envelope | 2 | 2009 | |
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| 7,701,589 Three-dimensional shape measuring method and apparatus | 1 | 2005 | |
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