Dual-mode display device and method for projector

Abstract

The invention discloses a dual-mode display device and method for a projector. The device comprises a rotatable fluorescent wheel, a first drive device, a color wheel and a second drive device. The fluorescent wheel is provided with a plurality of fluorescence color sections. The color wheel is provided with a light filter in multiple colors. The second drive device is a bidirectional drive mechanism driving the color wheel to rotate clockwise and counterclockwise. The device further comprises a starting point recording device. When the color wheel rotates counterclockwise to enable the projector to present a high-brightness mode, the color wheel rotates clockwise to enable the projector to present a bright mode; when the color wheel rotates clockwise to enable the projector to present the high-brightness mode, the color wheel rotates counterclockwise to enable the projector to present the bright mode. According to the dual-mode display device and method, clockwise rotation and counterclockwise rotation of the color wheel are utilized, so two architectures of the high-brightness mode and the bright mode can be produced on the same projector at the same time; the situation that the cost is increased due to the requirement for different color wheels will not happen; moreover, people do not need to worry about the fact that sometimes a high-brightness projector is needed while sometimes a projector with a bright color function is needed, and life convenience is added.

Description

technical field [0001] The present invention relates to the technology in the field of optical projection equipment, in particular to a dual-mode display device and a display method for a projector. Background technique [0002] Current projectors are nothing more than three kinds of light sources: 1. Mercury lamp 2. LED 3. Laser, this patent is applicable to various projectors that need two-color wheels. The laser projector is a relatively new technology at present. The principle of the light source is to use the array of multiple blue lasers to focus the light on the fluorescent wheel through the lens group. (Lambertian body) After reflection, it then passes through the lens group and the color wheel to refocus the light at the entrance of the light guide. The laser projector produces color by using the fluorescent powder on the fluorescent wheel to convert the blue laser light excitation into other red, green and yellow light, and then use the color wheel to excite the l...

AI Technical Summary

Problems solved by technology

[0004] With the current technology, since the angle of the color wheel and the rotation direction of the motor are fixed, if the projector wants to produce a high-brightness mode, it must increase the yellow angle in a large area. Although the brightness can be greatly increased, the color must not be changed. Bright, the overall picture will be yellowish. If you use this color wheel angle to adjust the more vivid mode, use the principle of adjusting the current to reduce the current through the area that will greatly increase the brightness. This will cause a big problem that is a color. The angle of the wheel is 360 degrees. If the current is reduced in the area where the brightness is greatly increased, there will be a small area left in the area with a relatively pure color. In this way, the overall brightness of the bright mode will be much lower, and the intensity of the monochrome will be much lower. It will also be very low because the color wheel angle is not large enough

Images