Wide-gamut composite light source projection display device and wide-gamut composite light source projection display method
A composite light source and projection display technology, which is applied in the direction of projection devices, lighting devices, lighting device components, etc., can solve the problems of difficult marketization, expensive lasers, and high cost of laser display systems, and achieve expanded range, bright colors, and The effect of high image brightness
Inactive Publication Date: 2012-08-22
SHANDONG UNIV
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Problems solved by technology
However, high-power lasers are very expensive, resulting in high cost of laser display systems, making it difficult to market
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[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0028] exist figure 1 In the process, the laser light emitted by the red laser 2 shines on the reflector 3, and the reflected red laser shines on the dichroic mirror I5 and transmits it. The laser light emitted by the green laser 4 shines on the dichroic mirror I5, and the reflected green laser light and the transmitted red laser light converge and irradiate the dichroic mirror II7 for transmission. The laser light emitted by the blue laser 6 shines on the dichroic mirror II7, and the reflected blue laser light and the transmitted red and green laser light converge together. The three laser beams are irradiated to the dichroic mirror III8 and reflected out. The white light emitted by the high-pressure mercury lamp 1 is transmitted through the dichroic mirror III8, converges with the red, green and blue laser light, and is uniformly lighted by the inte...
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The invention relates to a wide-gamut composite light source projection display device and a wide-gamut composite light source projection display method, which use a small-power laser device and a high-pressure mercury lamp to form a composite light source to provide light energy for a projection device. A projections system adopting the projection display device has the characteristics of being wide in gamut, low in cost and compatible with the existing imaging light path. The wide-gamut composite light source projection display device comprises the composite light source composed of the light source of the high-pressure mercury lamp and a laser light source, wherein lights of the two light sources are together sent into a dichroic mirror III, an integral bar and an imaging light path which are sequentially arranged. The laser light source is composed of a red laser device, a green laser device and a blue laser device, wherein red laser of the red laser device is reflected onto a dichroic mirror I through a reflector, green laser of the green laser device also enters the dichroic mirror I and is sent into a dichroic mirror II together with the red laser, and blue laser of the blue laser device is also sent into the dichroic mirror II and then is sent into the dichroic mirror III together with the red laser and the green laser.
Description
technical field [0001] The invention discloses a field of television projection display, in particular to a low-cost wide color gamut composite light source projection display device and method. Background technique [0002] Traditional projection devices use high-pressure mercury lamps as the light source, displaying a wide spectrum of primary colors and a small color gamut, which can only cover 40% of the colors in nature; using red, green, and blue lasers as light sources, the displayed primary color spectrum is extremely narrow, which can be greatly improved. The projection display and the color characteristics of the display device can make the display color gamut reach more than 90% of the human eye, and the color is more natural. Therefore, the laser display system with red, green, and blue lasers as light sources has the characteristics of narrow base color spectrum, bright display color, and wide color gamut, which is a major advancement in the display field. Howev...
Claims
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IPC IPC(8): G03B21/20G03B21/14F21V13/04G02B27/10G02B27/09
Inventor 宋刚张丽军王玉荣曹洪剑李义辉
Owner SHANDONG UNIV