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CISDOC database

Document ID (ISN)27505
CIS number 77-1291
ISSN - Serial title Lichttechnik
Year 1976
Convention or series no.
Title Subjective impression of luminance
Original title Subjektiv empfundene Helligkeit [in German]
Bibliographic information 1976, No.6, p.266-270. 9 ref.
Abstract Report of a series of tests to determine subjective evaluation of illumination level, in which 41 subjects were tested, to verify the results of previous research (CIS 74-1891). The subjects had to change the illumination level (reduce it by one half or increase it twofold) following a subjective impression received. The results obtained by this test method do not agree; it does not appear possible to draw up a subjective illumination scale in a simple and unequivocal manner.
Descriptors (primary) subjective assessment; artificial lighting; luminance
Descriptors (secondary) illumination levels; experimental determination; character; individual variables
Document type -
Subject(s) Lighting, colour and vision
Broad subject area(s)
Browse category(ies) Non-ionizing radiation
Lighting and colour