Illuminating module for a display apparatus
AssigneeProkia Technology Co., Ltd.
InventorsKuo-Tung Tiao, Fu-Ming Chuang
Life of this patent
Estimating the term…
Abstract
An illuminating module includes a first reflector having a curved first reflector surface, a reflector opening and a first focal point, and a light source disposed in the first reflector at the first focal point. A second reflector is mounted on a surrounding edge of the first reflector to configure the opening with shielded and unshielded portions, and has a second reflector surface facing the first reflector surface. A portion of the light rays from the light source which radiates toward the first reflector and which is reflected thereby toward the shielded portion is reflected by the second reflector surface back to the light source so as to be able to combine with the light rays that are reflected by the first reflector for passage through the unshielded portion.
Claims14
An illuminating module for a display apparatus, said illuminating module comprising:
- a first reflector having a reflector axis, a curved first reflector surface that surrounds said reflector axis, a front surrounding edge which defines a reflector opening that opens forwardly, and a first focal point surrounded by said first reflector surface and disposed on said reflector axis;
- a light source disposed in said first reflector at said first focal point;
- a second reflector mounted on said front surrounding edge to configure said reflector opening with shielded and unshielded portions, said second reflector having a second reflector surface that faces said first reflector surface, wherein a first portion of light rays from said light source radiates toward said first reflector surface and is reflected by said first reflector surface to pass directly through said unshielded portion of said reflector opening and travel along an optical axis, and wherein a second portion of the light rays from said light source initially radiates toward said first reflector surface and is reflected by said first reflector surface toward said shielded portion of said reflector opening so as to be reflected by said second reflector surface back to said light source so that the second portion of the light rays is able to combine with the first portion of the light rays;
- a light integrator disposed on said optical axis so as to receive the light rays from said unshielded portion of said reflector opening;
- a polarization state converter disposed on said optical axis so as to receive the light rays passing through said light integrator;
- and
- a condenser disposed on said optical axis so as to receive the light rays passing through said polarization state converter.
Dependencies are inferred from the claim text.