RANGE FINDING DEVICE AND OBJECT DETECTION DEVICE

PROBLEM TO BE SOLVED: To provide a range finding device and an object detection device capable of detecting light beams reflected from an object to be measured, and capable of high-precision range finding. SOLUTION: A projecting optical system 11 includes a light source 12 and a projecting lens (col...

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Bibliographische Detailangaben
Hauptverfasser:	NAKASE SHIGEKI, TOTSUKA HIROTOMO, SHIMANO HIROMI, NAKAMURA SHIGEYUKI, OTA TAKESHI
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES GYROSCOPIC INSTRUMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SURVEYING TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a range finding device and an object detection device capable of detecting light beams reflected from an object to be measured, and capable of high-precision range finding. SOLUTION: A projecting optical system 11 includes a light source 12 and a projecting lens (collimating lens) 13 serving as a light intensity correcting means. The light source 12 is a laser diode (LD) for outputting light beams corresponding to a drive signal input from a laser diode drive circuit (LD drive circuit) 33. The projecting lens 13 is for projecting the light beams output from the LD 12 toward the object T to be measured, and for correcting the intensity distribution of the light beams output from the LD 12; the intensity distribution of the light beams is corrected so that the light beams output from the LD 12 at a position a predetermined distance away from the projecting lens 13 have higher intensity at their peripheries than near their optical axes. The projecting lens 13 includes an aspherical lens portion and a cylindrical lens portion.