Color-separation color-combination device for superelevation lightness digital cineprojector

Abstract

The invention discloses a color separation and color recombination apparatus of a super high brightness digital cinematograph. After the white light is reflected by a first totally internal reflection prism and passes a second totally internal reflection prism, a Philip compensating prism, a first air gap of the Philip compensating prism and a Philip red reflecting prism in sequence, the white light is divided into a beam of red light and a beam of blue green light by a red reflecting and blue-green penetrating color separation and color recombination film, wherein a beam of red light reflected reaches a red light path image chip after being totally reflected via the first air gap of the Philip prism, the other beam of blue-green light penetrated is divided into a beam of blue light and a beam of green light by a blue reflecting and green penetrating color separation and color recombination film through a Philip blue reflecting prism, wherein the beam of blue light reaches a blue light path image chip after being totally reflected via the second air gap of the Philip prism and the other beam of green light penetrated reaches a green light path image chip via a Philip green penetrating prism. The invention can be used for a cinematograph, the lightness of which is up to eight thousand to twenty-five thousand lumen. The invention can avoid the deterioration of image quality of the apparatus for high heat, and even the danger to damage the apparatus.

Description

technical field [0001] The invention relates to a color separation and combination device, in particular to a color separation and combination device for an ultra-high-brightness digital movie projector. Background technique [0002] The ultra-large screen and ultra-high brightness digital cinema projector has the following important features: First, because the brightness is as high as 8000-25000 lumens (7kW, 25000 lumens; 3kW, 15000 lumens; 1.25kW, 8000 lumens), the screen width can be realized 5-25 meters super large screen projection. Secondly, it can process and convert various digital signals and analog signals, conveniently connect computers, DVD and other audio-visual equipment and various programs played by TV stations, and you can find the required programs on the Internet instantly. Finally, 3D or stereoscopic image projections are easily achieved using digital compositing techniques. Because these features greatly overcome the various shackles of film productio...

AI Technical Summary

Problems solved by technology

[0003] Due to the ultra-high brightness, the color separation and combiner is seriously heated. It is extremely difficult to control the working temperature of the color separation and combiner below 70°C, and heat dissipation has become the first problem.

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