Image projection system
AssigneeAsia Optical Co., Inc.
InventorChien-feng Lu
Life of this patent
Estimating the term…
Abstract
An image projector system includes an LED controller and first and second LEDs, a dichroic mirror. The LED controller controls the first and the second LED to emit first and second color lights, respectively. The second color light is of high luminance and is decomposed by a dichroic mirror into third and forth color lights having luminance close to that of the first color light. Each color light is guided through a light valves to adjust the spectral transmittance of the color light. A light-combining device, such as an x-cube, receives and combines the first color light, the third color light, and the forth color light, to form light images, and transmits the images to a display through a projector lens.
Claims20
An image projector system, comprising:
- an LED controller;
- a light source comprising a first LED and a second LED operatively coupled to and controlled by the LED controller to respectively emit a first color light consisting of one spectral component and a second color light consisting of two spectral components;
- a dichroic mirror arranged to receive and decompose the second color light into a third color light and a forth color light;
- and
- a light-combining element, which receives the first color light passing through a first light valve, the third color light passing through a second light valve, and the forth color light passing through a third light valve, and combines the color lights to form images;
- wherein the LED controller drives the first and second LEDs to respectively emit the first and second color lights and also controls the operation of the first, second and third light valves.
An image projector device, comprising:
- a light source controller;
- a first light source operatively coupled to and controlled by the light source controller to emit a first color light consisting of one spectral component;
- a second light source operatively coupled to and controlled by the light source controller to emit a second color light consisting of two spectral components;
- a dichroic beam splitter, which receives and decomposes the second color light into a third color light and a forth color light;
- and
- a light-combining element which receives and combines the first color light passing through a first light valve, the third color light passing through a second light valve, and the forth color light passing through a third light valve to form images;
- wherein the first and fourth color lights enter the light-combining element in opposite directions.
Dependencies are inferred from the claim text.