Natural-light illumination enhancement assembly

Details Natural-light illumination enhancement assembly Natural-light illumination enhancement assembly

1984-06-15

1987-01-06

Wintercorn, Richard A.

G02B 2700

Patent

active

046342222

ABSTRACT:
A louvred reflector 10 (FIG. 1) comprises an array of wholly or partially reflecting louvres of which two adjacent louvres 12,13 are shown in the Figure. Each said louvre, when viewed short-edge on as shown in the Figure, comprises an inclined downwardly-facing concave first section 15 and a lower, less-steeply inclined, downwardly-facing concave second section 16. Light reflected by the louvres is downwardly directed over a considerable angular range to produce generally uniform illumination on either side of the reflector. In a second embodiment, the reflected light is directed to only one side of the reflector.

REFERENCES:
patent: 717782 (1903-01-01), Wadsworth
patent: 721258 (1903-02-01), Wadsworth
patent: 2046601 (1936-07-01), Atkinson
patent: 2518044 (1950-08-01), Mattison
patent: 2546335 (1951-03-01), Friend
patent: 2857634 (1958-10-01), Garbade et al.
patent: 4128307 (1978-12-01), Badertscher et al.
patent: 4411493 (1983-10-01), Miller

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