Coordinate measuring method and device

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01N 2186

Patent

active

048395269

ABSTRACT:
A method and device for sensing the presence and location of an object in a reference plane by directing light along a line prependicular to the plane, defining a ring in that plane encircling said line of light, and sensing, by a change in the condition of the light, the presence of an object on the ring. In a first, non-contacting embodiment, light is directed along a line which is the axis of the ring and directed outwardly and focused at the ring. A circular detector coaxial with the light ring is positioned to sense intrusion onto that ring of an object, and by using a circular diode array detector, one can detect both the presence and location of that object on the ring. According to another contacting embodiment, a disc is placed in the reference plane with the light shining through an opening therein, the disc being movable in any direction in said reference plane. When an object touches the disc at any point and moves it, this changes the location of the aperture through which the light passes. This change is sensed to indicate an object on the ring.

REFERENCES:
patent: 3355590 (1967-11-01), Bertram
patent: 3476948 (1969-11-01), Mengers
patent: 3692414 (1972-09-01), Hosterman et al.
patent: 4042823 (1977-08-01), Decker et al.
patent: 4160199 (1979-07-01), Bardwell
patent: 4325640 (1982-04-01), Dreyfus et al.
patent: 4453082 (1984-06-01), Pryor

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

Coordinate measuring method and device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coordinate measuring method and device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coordinate measuring method and device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1279222

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