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Title: LENS CHARACTERISTICS AS RELATED TO MODEL FLATNESS
Accession Number: 00202682
Record Type: Component
Abstract: STEREOMODEL DEFORMATIONS WHICH ARE DIRECTLY ATTRIBUTABLE TO OPTICAL CHARACTERISTICS OF ANY PART OF A LENS SYSTEM ARE NOTABLY OF A SYSTEMATIC NATURE. ALTHOUGH THESE ERRORS MAY BE WITHIN THE USUAL SPECIFICATIONS FOR CONTOURS (90 PERCENT WITHIN 1/2 CONTOUR INTERVAL), THEIR SYSTEMATIC TREND CAN CONCEIVABLY HAVE A SIGNIFICANT INFLUENCE IN THE CALCULATION OF EARTHWORK QUANTITIES FROM HIGHWAY DESIGN MAPS. AN ANALYTICAL STUDY HAS BEEN CONDUCTED TO ASCERTAIN THE EFFECT OF INDIVIDUAL OPTICAL ELEMENTS OF THE LENS SYSTEM, INCLUDING CAMERA LENSES, PROJECTION LENSES, AND DIAPOSITIVE GLASS. BECAUSE OF ITS EXTENSIVE USE IN HIGHWAY DESIGN MAPPING, THE STUDY HINGES ON KELSH-TYPE PLOTTING INSTRUMENTS. IN CONJUNCTION WITH THESE INSTRUMENTS, SUCH CAMERA LENSES AS THE METROGON, AVIOGON, PLEOGON, AND PLANIGON ARE DISCUSSED. PROCEDURES FOR TESTING PLOTTING EQUIPMENT AND ISOLATING CAUSES OF DEFORMATION ARE OUTLINED. DATA ARE DERIVED FOR COMPENSATION OF COMBINED DISTORTION, WITHIN MINIMUM TOLERANCES, FOR THE RESTITUTION OF STEREOMODELS RELATIVELY FREE FROM DEFORMATIONS CAUSING SYSTEMATIC ERRORS. /AUTHOR/
Supplemental Notes: No 283, pp 1-24, 24 FIG, 6 TAB, 14 REF Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
Monograph Title: Monograph Accession #: 01410668
Authors: Katibah, G PPagination: 24p
Publication Date: 1961
Serial: Conference:
39th Annual Meeting of the Highway Research Board
Location:
Washington DC, United States Media Type: Digital/other
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Design; Highways
Files: TRIS, TRB
Created Date: Aug 19 1994 12:00AM
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