Illumination equipment

Details Illumination equipment Illumination equipment

1989-06-12

1990-09-11

Dority, Carroll B.

Illumination

Daylight lighting

362231, F21V 900

Patent

active

049567519

ABSTRACT:
An apparatus for illumination generating artificial light which resembles natural light as much as possible comprises a light source radiating substantially in the blue-green region, such as a fluorescent lamp (16a,b,c,d) and at least one incandescent lamp (18). Prior to exiting from a housing (12) of the illumination equipment the light of the light source radiating blue-green is reflected at least once from a white wall (14). This applies also, in part at least, to the light of the incandescent lamp (18).

REFERENCES:
patent: 1324008 (1919-12-01), D'Humy
patent: 2169355 (1939-08-01), Cohn
patent: 2282693 (1942-05-01), Abadie
patent: 2451580 (1948-10-01), Schwinger
patent: 2725461 (1955-11-01), Amour
patent: 2831966 (1958-04-01), Porteous
patent: 4570209 (1986-02-01), Wittlin
A. R. Robertson, "Computation of Correlated Color Temperature and Distribution Temperature", Journal of the Optical Society of America, vol. 56, No. 11, pp. 1528-1535 (Nov. 1968).
Gunter Wyszecki, "Development of New CIE Standard Sources for Colorimitry", Die Farbe 19 (1970); pp. 43-76.

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