Light-extraction apparatus for an optical-film lighting set having a visible-light coating

摘要

A light-extraction apparatus for an optical-film lighting set having a visible-light coating include a transparent sealed body, a wide AOR (0 degree to 90 degrees) optical film for reflecting ultraviolet lights and a visible light layer. The transparent sealed body is formed as a hollow shell body to accommodate an ultraviolet light source. A supporting member coated with the optical film and the visible light layer is constructed to a wall of the shell body or inside the shell body. The visible light layer is consisted of monolayered fluorescent or phosphorescent particles, and the particles are evenly distributed to coat on the interior wall of the shell body or the supporting member inside the shell body in a sparse scattering manner. A fixed area ratio of the coverage of the particles to that of the inter-particle spacing is then provided to the visible light layer for obtaining a higher illumination performance.

主权项

1. A light-extraction apparatus for an optical-film lighting set having a visible-light coating, comprising:
a transparent sealed shell formed as a hollow pipe structure; an optical film, coated onto the hollow pipe structure to omnidirectionally reflect ultraviolet lights for an angle of incidence ranged from 0 to 90 degrees but to allow visible lights to penetrate therethrough; and a visible light layer, wherein a surface of said hollow pipe structure includes a coated area coated by said visible light layer and the rest of the surface other than the coated area is defined as an uncoated area, the coated area occupies 1% to 99% of the surface, said visible light layer coated in a scattering manner onto the hollow pipe structure, having one of fluorescent particles and phosphorescent particles, wherein the fluorescent particles or phosphorescent particles are sparsely scattered in a predetermined distributed density, arranged as a monolayer coating, wherein 1%˜99% of a total area of said coated area is an integrated area of the granular coverage of said one of fluorescent particles and phosphorescent articles of said visible light layer, and the rest of said total area is contributed by integrating areas for inter-particle spacings.