Light source module for collecting reflective beam from light source
AssigneeBenq Corporation
InventorChong-Min Chang
Life of this patent
Estimating the term…
Abstract
A light source module, applicable in a projection display system, comprises a light source, a light-selection device and a reflective device. The light source provides an incident beam. The light-selection device is arranged on a light path of the incident beam, for passing one part of the incident beam through and reflecting the other parts to be a reflective beam. The reflective device is arranged between the light source and the light-selection device, for reflecting the reflective beam back to and passing through the light-selection device.
Claims11
A light source module, applicable in a projection display system, comprising:
- a light source, for providing an incident beam;
- a light-selection device, arranged on a light path of the incident beam, for passing one part of the incident beam through and reflecting the other parts to be a reflective beam;
- and
- a reflective device, arranged between the light source and the light-selection device, and the reflective device having a transparent portion, wherein the incident beam pass through the transparent portion of the reflective device so as to reach the light-selection device, and the reflective beam is reflected by the reflective device and back to the light-selection device.
A light source module, applicable in a projection display system having a liquid crystal display (LCD) as an imager, comprising:
- a light source, for providing an incident beam;
- a reflective polarizer, arranged on a light path of the incident beam, for passing one part of the incident beam through and reflecting the other parts to be a reflective beam;
- and
- a reflective mirror, arranged between the light source and the reflective polarizer, the reflective mirror having a reflective concave surface and a transparent portion, wherein the incident beam pass through the transparent portion of the reflective mirror so as to reach the reflective polarizer, and the reflective concave surface is used for reflecting the reflective beam back to the reflective polarizer.
A light source module, applicable in a projection display system having a digital micro-minor device (DMD) as an imager, comprising:
- a light source, for providing an incident beam;
- a color wheel, arranged on a light path of the incident beam, for passing one part of the incident beam through and reflecting the other parts to be a reflective beam;
- and
- a reflective minor, arranged between the light source and the color wheel, and the reflective mirror having a reflective concave surface and a transparent portion, wherein the incident beam pass through the transparent portion of the reflective mirror so as to reach the color wheel, and the reflective concave surface is used for reflecting the reflective beam back to the color wheel.
Dependencies are inferred from the claim text.