VELOCIMETER, DISPLACEMENT METER, VIBROMETER AND ELECTRONIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a velocimeter which realizes size reduction and power consumption reduction and which can accurately detect the moving speed of the object to be measured.;SOLUTION: In the velocimeter, a first luminous flux 7 emitted from the front end face of a laser diode 1 is reflected by a mirror 5a to enter a detecting point 14 on the front surface of the element 13 to be measured, and a second luminous flux 8, emitted from the rear end face of the laser diode 1, is reflected at a mirror 5b and enters the detecting point 14. The scattered light from the detection point 14 is photodetected by a photodiode 2. A signal processing circuit 10 calculates the amount of the frequency deviation of the scattered light, based on the output S of the photodiode 2.;COPYRIGHT: (C)2005,JPO&NCIPI