CANDLEPOWER TESTS OF GENERAL RAILWAY SIGNAL COMPANY. TYPE W AND TYPE SA RANGE LANTERN

Abstract

This report describes photometric tests of the General Railway Signal Company Type W and Type SA Range lanterns used in Coast Guard Aids to Navigation. Candlepower and beam divergence tests are reported for various spread lenses using a series of C-2R and C-2V filament lamps. Also reported are tests with two CC-6 filament lamps. The transmission factors for the red and green color filters are also given. The report concludes that CC-6 filaments are suitable for use in the Type W and Type SA lanterns. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 31, 1961
Accession Number
AD0262651

Entities

Organizations

  • United States Coast Guard

Tags

DTIC Thesaurus Topics

  • Coast Guard
  • Filaments
  • Navigation

Readers

  • Maritime Security/Maritime Homeland Security
  • Solar Physics
  • Vision Science/Vision Psychology/Cognitive Neuroscience.