| 摘要 |
PROBLEM TO BE SOLVED: To secure a sufficient amount of received light in a light-receiving element, and to attain a compact light-receiving area in the light-receiving element. SOLUTION: A distance-measuring apparatus includes: a laser light source 2 for emitting a laser beam; an optical element 3 for making the laser beam emitted from the laser light source into a substantially parallel light; a mirror 4b for light projection for scanning an object to be measured 100 with a laser beam, by reflecting the laser beam which is rotatable within a prescribed angle range and made into a substantially parallel light by the optical element, toward the object to be measured; a condenser lens 5 for condensing a laser beam reflected and diffused by the object to be measured; a light-receiving element 7 having a light-receiving surface 7a for receiving a laser beam condensed by the condenser lens; an aperture diaphragm 6 having an opening part 6a for reducing the diameter of a laser beam and arranged between the condenser lens and the light-receiving element; and a control part for computing distance information on the object to be measured by processing received-light signals generated on the basis of a laser beam received by the light-receiving element. The light-receiving element is arranged in the vicinity of the aperture diaphragm. COPYRIGHT: (C)2011,JPO&INPIT
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