Rangefinder device with focused elongated light source

Optics: measuring and testing – Range or remote distance finding – With photodetection

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

250204, 250553, 354403, G01C 310, G03B 708

Patent

active

044948689

ABSTRACT:
An improved automatic rangefinder device of the type having means for projecting a beam of light to illuminate a spot on a distant object, and an image sensor for viewing the object and determining the distance thereto by the observed position of the illuminated spot is disclosed. The rangefinder includes improved means for forming the beam of light comprising an elongated light source and projection optics for forming a real image of the light source, thereby defining an elongated beam region in space corresponding to the image of the light source, extending generally away from the rangefinder, whereby an object located in said beam region will be illuminated by a spot of light having an in-focus component. The image sensor detects the position of the in-focus component of the light. The rangefinder device includes imaging optics for imaging the spot on the image sensor. The imaging optics and the image sensor are arranged so that a real image of the image sensor formed by the imaging optics substantially coincides with the real image of the light source in the beam region of space.

REFERENCES:
patent: 3599552 (1971-08-01), Harvey
patent: 3936187 (1976-02-01), Momose
patent: 4248532 (1981-02-01), Nosler
patent: 4269512 (1981-05-01), Nosler
patent: 4274735 (1981-06-01), Tamura et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Rangefinder device with focused elongated light source does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rangefinder device with focused elongated light source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rangefinder device with focused elongated light source will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-564395

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.