发明授权
US06872931B2 Optical input device for measuring finger movement 有权
用于测量手指运动的光学输入装置

Optical input device for measuring finger movement
摘要:
An optical input device for measuring the movement of a finger (15) ia accommodated in a housing provided with a transparent window (12) for transmitting a measurement beam (13) from a diode laser (3) to the finger and radiation reflected by the finger to a detector (4). This feature prevents that grease and dust disturb and block the measuring beam.
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