Planar luminous body with improved light-extraction efficiency

Details Planar luminous body with improved light-extraction efficiency Planar luminous body with improved light-extraction efficiency

2005-05-24

2010-11-16

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Light diffusing

C313S474000, C313S506000

Reexamination Certificate

active

07834528

ABSTRACT:
A composite thin film-holding substrate for a surface light emitter, which is a transparent substrate including a composite thin film containing fine particles and a binder formed on the surface of a transparent base material. The refractive index of the composite thin film is higher than the refractive index of the transparent base material. The difference in the refractive index between the fine particles and the binder contained in the composite thin film is at least 0.1, and the ratio of (solid content mass of the fine particles)/(solid content mass of the binder+solid content mass of the fine particles) of the composite thin film is from 0.01 to 0.5. A surface light emitter can use the substrate.

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