| 摘要 |
A distance measuring device projects a light beam onto an object (7) to be detected. Light reflected from this object is subdivided into two light components by a beam splitter (2). The intensity of one of the light components is sensed by a first light intensity detector (3). The other light component is subjected to intensity modulation in agreement with the angle formed between the illuminating light and the reflected light, and the intensity of the modulated light component is sensed by a second light intensity detector (5). The outputs of the two detectors are input into a computer (6) which derives information which indicates the distance up to the object to be detected. <IMAGE>
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