Large screen whole screen rear projection display method

Abstract

This invention relates to large screen rear-projection display method of a total screen. A pair of projectors is applied, each of them outputs the right half and left of the original image to be processed optically and electronically to couple their optical edges to an image to get a complete image with its unit area light flux and the unit area pixel increased by one time. Said optical and electronic process includes that the projection must be put at the center of pair of projectors and optical focus of the projector screen, the size of the screen must be matched with the set direction of the screen. A double-head display card, a video collection card and a RGB collection card adjusting output resolution and image rotation freely should be mounted on the computer sending image signals to the projector to realize coupling of the optical edges of the two parts to get a total screen display of single screen or double screen splicing.

Description

technical field [0001] The invention relates to rear projection display technology, in particular to a large-screen full-screen rear projection display method, including single-screen full-screen display and multi-screen image synthesis and splicing full-screen display, belonging to the field of optical and electronic technologies. Background technique [0002] Rear projection display mainly includes two aspects of rear projection screen and projector. Rear projection screen: Since the emergence of electronic splicing rear projection technology in the 1980s in the 20th century, tens of square meters or even hundreds of square meters of display have been obtained by splicing. It is not difficult to rear-projection a curtain wall with a larger area. However, the splicing gap is still inevitable. In terms of projectors: Since the 21st century, with the development of LCD (liquid crystal) and DLP (digital light processor) technologies, projectors with a luminous flux of more th...

AI Technical Summary

Problems solved by technology

However, these projectors with huge luminous flux are relatively expensive, often costing hundreds of thousands or even millions of yuan, which is obviously unacceptable to ordinary users

At present, the output luminous flux of general commercial projectors, especially single-chip DLP projectors does not exceed 3000 ANSI lumens, which is obviously not enough for full-screen rear projections above 120 inches

To solve this problem, one is to use a projector with a larger luminous flux output, especially a three-chip DLP projector, but as mentioned above, the high price makes it difficult to popularize; The superimposition effect of the edge of the image is poor, especially when the optical path is folded, which is caused by the insufficient processing precision of the image chip, mirror and lens

Images