Accession Number : AD0474590

Title :   ANALYSIS OF AN EXPERIMENTAL OPTICAL ALIGNMENT SYSTEM,

Corporate Author : BOEING CO SEATTLE WA

Personal Author(s) : Schneider, Raymond W. ; Pond, Charles R.

Report Date : NOV 1965

Pagination or Media Count : 100

Abstract : An experimental evaluation of various optical alignment systems was made at ranges up to 300 feet. In addition to open path measurements, tests were performed on light propagation through closed tubes in order to determine the increase in accuracy achievable when the effects of atmospheric refraction have been reduced. The projection system tested used a gas laser as a source and a 6 in telescope as the focusing agent. A low cost target/detector device integrated with a standard tooling sphere and having a meter read-out was developed for use with the projection system. It was found that at ranges of 90 feet and beyond the use of an enclosed laser propagation path gave approximately a two-fold increase in alignment accuracy. At close-in ranges of 30 feet or so there appeared to be no improvement in accuracy by employing an enclosed path. Reflecting spheres of various radii were also used as targets in a double-pass technique to see if they offered an improvement in accuracy over prism targets. (Author)

Descriptors :   (*LASERS, ALIGNMENT), (*JIGS, ALIGNMENT), RANGE(DISTANCE), REFRACTION, OPTICAL PROPERTIES, LIGHT, FOCUSING, PRISMS(OPTICS), MANUFACTURING, AIRCRAFT, TOLERANCES(MECHANICS), TELESCOPES, INTERFEROMETERS, QUALITY CONTROL, SPHERES.

Subject Categories : Lasers and Masers
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE