| 摘要 |
PURPOSE: A 3D optical scanning device and a method are provided to regularly compensate delay time regardless of temperature variations and to correct time errors caused by an intensity difference of reflected lights in short time depending on a reflecting rate different per each spot of a target. CONSTITUTION: A 3D optical scanning device comprises a light source(110), a light transmission lens(120), a first beam splitter(130), a transmission reflective mirror(140), a rotary reflective mirror(150), a receiving reflective mirror(210), a light receiving lens(220), an optical fiber for external path(230), a light signal generating unit(310), and a photo detector(320). A light transmission lens sets a divergent angle of lights emitted from a light source. The first beam splitter separates the lights penetrated through the light transmission lens into external lights being transmitted to a target and lights for internal reference signals. The transmission reflective mirror changes a path of lights transmitted from the first beam splitter to the target. The rotary reflective mirror sets a light emitting direction to scan the target while rotating in a vertical direction or horizontal direction and receives the lights reflected by the target. The receiving reflective mirror refracts the reflected lights refracted by the rotary reflective mirror. The optical receiving unit collects the reflected lights refracted by the receiving reflective mirror.
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