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Quantifying the Indoor Light Environment: Testing for Light Stability in Retail and Residential Environments

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Indoor products may be subjected to a wide range of interior lighting environments. These environments include residential incandescent, commercial fluorescent, and industrial metal halide illuminants. Products may also be exposed to sunlight coming through a window or an automobile windshield. Each of these light sources has its own unique spectrum. In a like manner, each material has its own unique spectral sensitivity. This paper surveys a wide variety of the most commonly used indoor light sources, including direct and indirect window-filtered sunlight. The results indicate that direct window-filtered sunlight is the most severe interior lighting condition that your product will probably see. Because a xenon arc test chamber can provide an excellent simulation of sunlight through window glass, it is the best method of simulating this worst-case indoor lighting environment for testing the light stability of your product.

Document Type: Research Article

Publication date: January 1, 2004

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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