Materials And Coatings: Backlight Assemblies
Source: Labsphere, Inc.
A common application is the need to diffusely illuminate over an extended area. Since backlighting applications involve multiple reflections within a reflective cavity, the efficiency of the cavity can be affected significantly by relatively small changes in reflectance
Click Here To Download:
•Datasheet: Optical-Grade Spectralon Material
•Datasheet: Spectraflect Reflectance Coating
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A common application is the need to diffusely illuminate over an extended area. Since backlighting applications involve multiple reflections within a reflective cavity, the efficiency of the cavity can be affected significantly by relatively small changes in reflectance. For example, a typical cavity design with a 99% reflective surface may provide a 15% to 30% gain in performance over the same cavity coated with a 98% reflective coating even though the difference in reflectance between these two coatings is only 1-2%.
•Datasheet: Optical-Grade Spectralon Material
•Datasheet: Spectraflect Reflectance Coating
•Datasheet: Optical-Grade Spectralon Material
•Datasheet: Spectraflect Reflectance Coating
A common application is the need to diffusely illuminate over an extended area. Since backlighting applications involve multiple reflections within a reflective cavity, the efficiency of the cavity can be affected significantly by relatively small changes in reflectance. For example, a typical cavity design with a 99% reflective surface may provide a 15% to 30% gain in performance over the same cavity coated with a 98% reflective coating even though the difference in reflectance between these two coatings is only 1-2%. The benefit of diffuse rather than specular (or mirror-like) reflectance is that diffuse reflectance scatters light, averaging-out hot spots and providing a highly uniform field of illumination. Specular reflectors tend to propagate non-uniformities or ‘hotspots' in the illuminator system. The closer to the Lambertian ideal, the more uniform the illumination achieved.
Labsphere's diffuse reflectance coatings and materials are specifically designed to closely approximate the Lambertian ideal and represent the highest-performance available on the market today. Both durable and optically stable over time, Labsphere's materials and coating provide the consistent uniform reflectance of light over the lifetime of the display.
Click Here To Download:•Datasheet: Optical-Grade Spectralon Material
•Datasheet: Spectraflect Reflectance Coating