Abstract:
An illumination system with multiple lamps is provided for increasing the Lumens of projected images. In the system, light guiding means having at least two light tunnels and lamps are used for guiding light emitted from the lamps to a beam splitter so that the light beams from the different lamps are converged into one single light beam, thereby increasing the power of light.
Abstract:
An optical system for a projection display includes a light source, a light path switching device, and a total internal reflection (TIR) prism set disposed between the light path switching device and the projection lens. The light path switching device has a first mode of operation for directing the light towards a projection lens and a second mode of operation for directing the light away from the projection lens. The TIR prism set includes a first prism, a second prism and a third prism; a first gap is formed between the first prism and the second prism, and a second gap is formed between the first prism and the third prism. The light emitted from the light source enters the light path switching device by means of total internal reflection Then, under the first mode, the light reflected by the light path switching device passes through the first and the second gaps and enters the projection lens, whereas under the second mode, the light reflected by the light path switching device is totally reflected at the boundary between the first gap and the second prism and away from the projection lens.
Abstract:
A rotating periodic color-regulating module of the image display device is disclosed to improve the usage of light. The rotating periodic color-regulating module comprises a color separating light guide and a color-regulating processor. By using a grating element installed in front of the color separating light guide, the incident light is interleaved into three parts of different wavelengths, red (R), green (G) and blue (B), propagating toward the corresponding color filters. Part of the light is reflected by the color filters, then reflected by the mirror around the grating element, and goes back to the color filters. The incident light is divided into three uniform beams of light, R, G and B, to the color-regulating processor. The color-regulating processor changes the outgoing position and order of the light beams periodically and rapidly for displaying image.
Abstract:
The present invention discloses a Fabry-Perot optical filter device, which includes a Fabry-Perot element for allowing a light to pass through and optically filtering the light at least twice, and at least one reflecting element for reflecting the light passed through the Fabry-Perot element back to the same Fabry-Perot element during the at least two optical filtering. The Fabry-Perot optical filter device further includes an input terminal used to import the light into the Fabry-Perot optical filter device, and an output terminal used to export the light after the at least two optical filtering.