Light and weathering testing apparatus

Details Light and weathering testing apparatus Light and weathering testing apparatus

1988-03-16

1989-11-14

Anderson, Bruce C.

Radiant energy

Radiant energy generation and sources

With radiation modifying member

2504921, G21K 300

Patent

active

048809888

ABSTRACT:
To simplify separation of infrared (IR) radiation from visible and ultraviolet (UV) radiation emitted from a xenon lamp (2), the lamp is surrounded by a cylindrical filter (1) reflecting IR radiation inwardly of the filter but passing UV and visible spectral radiation therethrough. IR radiation reflected inwardly of the filter is absorbed, in accordance with the invention, by an absorbing surface (5) extending axially longitudinally and diametrically across the cylindrical filter, with the cylinder axis (4) of the filter. An auxiliary surface (9) can be positioned between the radiation source and the adjacent nearer side wall of the filter. Reflected IR radiation (8) can thus be absorbed by the IR absorbing surface, with essentially only UV and visible light radiation passing through the cylindrical filter.

REFERENCES:
patent: 3686940 (1972-08-01), Kockott
patent: 4101424 (1978-07-01), Schooley
patent: 4644899 (1987-02-01), Glaus
patent: 4747645 (1988-05-01), Rudzki

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