ACCURACY OF PHOTOMETRY OF RETROREFLECTORS AND RETROREFLECTIVE MATERIALS

The paper examines the influence of source, receiver and sample dimensions on the accuracy of measurement of the coefficient of luminous intensity of retroreflectors and retroreflective materials. Expressions are developed from which requirements for an acceptable accuracy can be derived. The error caused by a wrong adjustment of the observation angle is also discussed. /Author/TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00243426
• Corporate Authors:

  Illuminating Engineering Society

  York House, 199 Westminster Bridge Road
  London SE1 7UN,   England 
• Authors:
  • Moerman, JJB
• Publication Date: 1977

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 85-92
• Serial:
  • Lighting Research and Technology
  • Volume: 9
  • Issue Number: 2
  • Publisher: Sage Publications Limited
  • ISSN: 1477-1535
  • Serial URL: http://lrt.sagepub.com/

Subject/Index Terms

• TRT Terms: Angularity; Errors; Eye; Headlamps; Luminosity factor; Luminous intensity; Mathematical models; Measurement; Photometry; Reflectorized materials; Reflectorized road markings; Retroreflectors; Vehicle lighting devices
• Uncontrolled Terms: Angles; Position
• Old TRIS Terms: Luminosity
• ITRD Terms: 6427: Angle; 6440: Error; 1342: Headlamp; 505: Light intensity; 9061: Location; 6473: Mathematical model; 6136: Measurement; 6761: Photometry; 560: Reflecting road stud; 1343: Reflector (veh); 4523: Reflectorized material; 2066: Vision
• Subject Areas: Geotechnology; Highways; Materials; Operations and Traffic Management; Safety and Human Factors; Vehicles and Equipment; I73: Traffic Control; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00164363
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Apr 12 1978 12:00AM