Light stability testing device

Details Light stability testing device Light stability testing device

2005-03-22

2005-03-22

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S205000, C250S216000, C250S365000, C250S372000, C356S213000

Reexamination Certificate

active

06870147

ABSTRACT:
A light stability testing device for conducting an accurate light stability test that permits an accurate ultraviolet irradiation and an accurate visible light irradiation, the device comprising an optical sensor having a visible light measuring sensor (5) for measuring the dose of visible light, and a ultraviolet measuring sensor (6) for measuring the dose of ultraviolet ray, an optical system having a total light regulating means (331) for regulating the absolute quantity of light emitted from a light source and a ultraviolet ray regulating means (335) for regulating the dose of ultraviolet ray in light regulated by the total light regulating means, and a control unit for controlling a total light control unit that controls the total light regulating means (331) by a signal from a visible light measuring sensor (5), and the ultraviolet ray regulating means (335) by a signal from the ultraviolet measuring sensor (6).

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