skip to main content

Title: Light pipe - design for efficiency

The high cost and availability of materials which are clear enough to transmit light without absorption has limited the idea of piping large-scale quantities of light. The light pipe uses the principle of Total Internal Reflection, with the light guided by very accurate prisms. The transmission of light directed into the end of a Light Pipe at an angle of less than 27.6 degrees is theoretically 100% efficient. The author describes its uses and advantages for lighting offices, cold storage areas, difficult access and hazardous areas, and for solar lighting. Future directions will be to improve the economics and accuracy of the technology. 4 references, 2 figures.
Authors:
Publication Date:
OSTI Identifier:
5762635
Report Number(s):
CONF-850301-
Journal ID: CODEN: ENTED
Resource Type:
Conference
Resource Relation:
Journal Name: Energy Technol. (Wash., D.C.); (United States); Journal Volume: 12; Conference: 12. annual energy technology conference and exposition, Washington, DC, USA, 25 Mar 1985
Research Org:
TIR Systems, Ltd., Vancouver, British Columbia
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 14 SOLAR ENERGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; LIGHT PIPES; TECHNOLOGY ASSESSMENT; LIGHT TRANSMISSION; DESIGN; ECONOMICS; LIGHTING SYSTEMS; PRISMS; REFLECTIVITY; ENERGY SYSTEMS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; SURFACE PROPERTIES 320100* -- Energy Conservation, Consumption, & Utilization-- Buildings; 141000 -- Solar Collectors & Concentrators; 657005 -- Theoretical Physics-- Optics