Arrangement for measuring angles

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

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

250237G, G01D 534

Patent

active

041432681

ABSTRACT:
An arrangement for measuring angles, particularly for use in theodolites employs light electric detectors to carry out physical measurements. An index mark which is used in the measuring operation is arranged together with at least one reading position of a graduated circle in the object plane of an imaging system. The latter images the reading position of the graduated circle on to a first light electric detector and the index mark on to a second light electric detector. When two reading positions are used to obtain the reading value then the first reading position is imaged on to the second reading position which, together with the index mark, lies in the object plane of the imaging system. The common arrangement of the reading position and the index mark in the object plane of the imaging system eliminates any inaccuracies of the optical components and hence, accidental measuring errors. So it is possible to do without a very complicated light electrical evaluation system.

REFERENCES:
patent: 3458709 (1969-07-01), Beall
patent: 3562772 (1971-02-01), Erbe
patent: 4064435 (1977-12-01), Stebbins

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

Arrangement for measuring angles does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-922480

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