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Equipment, systems and methods for control of color in projection displays

A technology of projection system and power control, which is applied in the direction of image reproducer, color TV, picture replicator, etc. of projection device to achieve the effect of high resolution and brightness

Inactive Publication Date: 2009-12-23
IMAX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The present invention seeks to solve the aforementioned equalization and color matching problems by providing devices, systems and methods for controlling the spectral power distribution of input light without reducing the overall brightness of the display device

Method used

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  • Equipment, systems and methods for control of color in projection displays
  • Equipment, systems and methods for control of color in projection displays
  • Equipment, systems and methods for control of color in projection displays

Examples

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Embodiment Construction

[0055] For convenience of description, the following will describe an example in which two projection devices form a composite display device, where the two projection images are arranged side by side along the horizontal direction. This is a subset of more complex systems which may include more than two projection devices arranged in such a way that a composite image is produced from a matrix of images superimposed or arranged horizontally, vertically, or both. It can be seen that the invention disclosed herein is applicable to more complex configurations and to the general application of adjusting the color of a projection display device when only one display device is used.

[0056] FIG. 1 shows a schematic plan view of a projection system using two SLM-based projection display devices to form a composite image according to the prior art. Various types of SLM devices including deformable mirror devices (DMDs), or reflective or transmissive liquid crystal devices can be appl...

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Abstract

The present invention discloses systems, equipment and methods that allow the improved adjustment of color in projection displays. Equipment, systems and methods are disclosed for matching the color balance of each display including the color of the display primaries and further equipment, systems and methods are disclosed for the correction of a field dependant color variation across the field of an SLM based projector.

Description

technical field [0001] The present invention relates to the projection of images, and more particularly to methods and apparatus for matching colors among multiple projection display devices. Background technique [0002] Spatial Light Modulator (SLM) type projection display devices are often used in applications that reduce hue variation in the display devices, and color matching among these display devices is important. Display devices for rendering high-quality images, such as for film applications, require better color matching since color control is an important part of film image expressiveness. Users of these display devices expect that in each movie theater, the colors reproduced by the projection system should match those determined during post-production of the movie. [0003] In other applications, multiple projection display devices may be used at the same time, for example when the spatial resolution of a single projection display system of a given type is insu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/31
CPCH04N9/3197H04N9/3158H04N9/3105H04N9/3155H04N9/3164
Inventor 肖恩·阿德金斯迈克尔·吉本
Owner IMAX CORP