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Publication of TWI274224BpublicationCriticalpatent/TWI274224B/en
Light Guides In General And Applications Therefor
(AREA)
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Optical Elements Other Than Lenses
(AREA)
Projection Apparatus
(AREA)
Abstract
A light pipe comprises a main body and at least one absorbing layer. In this case, the main body has at least three optical elements. The optical elements combine with each other. The optical devices form a light passing space. Each optical element has a first surface. Each first surface faces the space and a high reflecting layer is formed on each first surface. The absorbing layer is formed on another surface of the optical element excluding the first surface. The absorbing layer is composed of material absorbing visible light.
Solar reflective mirror that has a curved reflective surface, and which comprises a transparent substrate that has a convex surface and an opposite concave surface, with a reflective coating on the convex surface and an alkaline barrier layer on the concave surface.
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