Moon et al., 1949 - Google Patents
Luminous-ceiling lightingMoon et al., 1949
View PDF- Document ID
- 14803370641507444747
- Author
- Moon P
- Spencer D
- Publication year
- Publication venue
- Illum. Eng
External Links
Snippet
ereasingly conscious of the necessity for planned lighting that will provide ideal visual conditions. As a step in this direction the LES. Committee on Standards of Quantity and Quality of Interior Illumination1 has recommended a 3: 1 brightness (helios) ratio 'i'for all …
- 230000000007 visual effect 0 abstract description 9
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F2013/0418—Constructional details
- G09F2013/0454—With slidable panels or parts
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