DISTANCE DETECTOR

PURPOSE:To enable a highly accurate detection of distance in a wide measuring range, by locating part of an observing surface corresponding to the mark closer to an observation lens far from the lens to allow the formation of a good image evenly over the entire observing surface. CONSTITUTION:The po...

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Bibliographic Details
Main Author IDESAWA MASANORI
Format Patent
LanguageEnglish
Published 14.08.1986
Subjects
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING DISTANCES, LEVELS OR BEARINGS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
NAVIGATION
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Summary:PURPOSE:To enable a highly accurate detection of distance in a wide measuring range, by locating part of an observing surface corresponding to the mark closer to an observation lens far from the lens to allow the formation of a good image evenly over the entire observing surface. CONSTITUTION:The positions (marked points T0-T2) of an object on an observing line 2 deviated from the optical axis 1 of an observing lens L are measured so that the distance to the object may be detected as distance from the optical axis 1 of the observing lens L. Here, since the observing surface is located at the position closer to a theoretical image formation field 4 as a whole, a distinct image can be always obtained on the observing surface regardless of the distance to the marked points.
Bibliography:Application Number: JP19850021576