Method of accelerated testing of illuminated device components
Assignee3M Innovative Properties Company
InventorsWarren D. Ketola, Richard M. Fischer, Jr.
Life of this patent
Estimating the term…
Abstract
Methods and devices for accelerated light stability testing are described. The method comprises exposing a component to light having a total irradiance at wavelengths between 300 nm and 500 nm wherein the irradiance at wavelengths ranging from 300 nm to 350 nm is less than 3.1% of the total irradiance; the irradiance at wavelengths ranging from greater than 350 nm to 380 nm ranges from 0.2% to 2.2% of the total irradiance; the irradiance at wavelengths ranging from greater than 380 nm to 420 nm ranges from 4.5% to 9.1% of the total irradiance; and the irradiance at wavelength ranging from greater than 420 nm to 500 nm ranges from about 86% to about 95% of the total irradiance.
Claims12
A method of accelerated aging comprising
- providing a component of an illuminated display device in a test chamber;
- exposing the component to light having a total irradiance at wavelengths between 300 nm and 500 nm wherein
- an irradiance at wavelengths ranging from 300 nm to 350 nm is less than 3.1% of the total irradiance;
- an irradiance at wavelengths ranging from greater than 350 nm to 380 nm ranges from 0.2% to 2.2% of the total irradiance;
- an irradiance at wavelengths ranging from greater than 380 nm to 420 nm ranges from 4.5% to 9.1% of the total irradiance;
- and
- an irradiance at wavelength ranging from greater than 420 nm to 500 nm ranges from about 86% to about 95% of the total irradiance.
A method of accelerated aging comprising
- providing a test sample in a test chamber;
- exposing the component to light having a total irradiance at wavelengths between 300 nm and 500 nm wherein
- an irradiance at wavelengths ranging from 300 nm to 350 nm is less than 3.1% of the total irradiance;
- an irradiance at wavelengths ranging from greater than 350 nm to 380 nm ranges from 0.2% to 2.2% of the total irradiance;
- an irradiance at wavelengths ranging from greater than 380 nm to 420 nm ranges from 4.5% to 9.1% of the total irradiance;
- and
- an irradiance at wavelength ranging from greater than 420 nm to 500 nm ranges from about 86% to about 95% of the total irradiance.
An accelerated light stability test device comprising:
- a chamber;
- and
- a light
- having a total irradiance at wavelengths between 300 nm and 500 nm wherein
- an irradiance at wavelengths ranging from 300 nm to 350 nm is less than 3.1% of the total irradiance;
- an irradiance at wavelengths ranging from greater than 350 nm to 380 nm ranges from 0.2% to 2.2% of the total irradiance;
- an irradiance at wavelengths ranging from greater than 380 nm to 420 nm ranges from 4.5% to 9.1% of the total irradiance;
- and
- an irradiance at wavelength ranging from greater than 420 nm to 500 nm ranges from about 86% to about 95% of the total irradiance.
Dependencies are inferred from the claim text.