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  • 1
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    Unknown
    Lenseless Scanning Telescope (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Dual-aperture device minimizes aliasing. Radiometer scans at right angles to line of flight, giving complete coverage from horizon to horizon. Configurations include use of detector as inner aperature or use of concentrating lens in or behind inner aperture to image outer aperture on smaller detector.
    Keywords: PHYSICAL SCIENCES
    Type: LAR-12648 , NASA Tech Briefs (ISSN 0145-319X); 7; 3; P. 266
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Optics for natural lighting (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Energy-saving optics utilize sky and sun for lighting. Innovative optical arrangements for transmitting outdoor light into building interiors are decribed using flat white and mirrored surfaces for converging and diverging light pipes.
    Keywords: PHYSICAL SCIENCES
    Type: LAR-12333 , NASA Tech Briefs (ISSN 0145-319X); 3; P. 209
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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