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Image projection display method and optical engine

A technology of projection display and display method, applied in the field of projection display, can solve problems such as poor contrast of projection display images

Active Publication Date: 2018-04-06
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem of poor contrast in the projection display image of the DLP optical engine in the related art, the present disclosure provides an image projection display method and an optical engine

Method used

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  • Image projection display method and optical engine
  • Image projection display method and optical engine

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Experimental program
Comparison scheme
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Embodiment 1

[0039] image 3 It is a flowchart of an image projection display method according to an exemplary embodiment. Such as image 3 As shown, the image projection display method may include the following steps.

[0040] In step S110, image data of an image to be projected and displayed is acquired.

[0041] During the use of the optical engine, the computer and other video signal output terminals convert the display data into video signals, and send them to the optical engine through the connection between the optical engine and the video signal output terminal. After the optical engine receives the video signal output by the video signal output terminal, it The video signal is processed to generate image data for an image to be projected and displayed.

[0042] Figure 4 It is a schematic diagram of signal processing performed by a DLP optical engine according to an exemplary embodiment. The light emitted by the light source 101 is processed by the optical system 102 and projec...

Embodiment 2

[0057] Figure 5 is a description of the details of step S120 shown according to an exemplary embodiment. In step S120, the step S120 may include the following steps.

[0058] In step S121, the brightness information and pixel position information of each pixel in the image data are extracted.

[0059] A pixel is the basic unit of an image, and an image is made up of pixels. The image data includes information such as brightness information and position information of each pixel and image display driving signals, and the brightness information and pixel position information of each pixel are extracted from the image data.

[0060] In step S122, according to the brightness information and pixel position information of each pixel, the partition corresponding to the brightness level in the image to be projected and displayed is determined.

[0061] There are many ways to determine the partition corresponding to the brightness level in the image to be projected and displayed ac...

Embodiment 3

[0068] Figure 7 is a description of the details of step S122 according to an exemplary embodiment. In step S122, the step S122 may include the following steps.

[0069] In step S1221, the brightness level existing in the image to be projected and displayed is determined according to the brightness information of each pixel.

[0070] According to the brightness information of each pixel, the brightness value is divided into a plurality of brightness ranges, and each brightness range corresponds to a brightness level.

[0071] There are many ways to determine the brightness level existing in the image to be projected and displayed. It may be that multiple brightness levels are preset in the optical engine according to the brightness value, and then according to the brightness information of each pixel in the image to be projected and displayed, determine the brightness level of the image to be projected and displayed. The brightness level existing in the image; it can also di...

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Abstract

The invention discloses an image projection display method and an optical engine. The method comprises the steps of obtaining image data of a to-be-projected display image; partitioning the to-be-projected display image according to luminance data, wherein the partitions have different luminance levels; adjusting luminous flux of an area, in a luminous flux control element, corresponding to each partition in the to-be-projected display image according to the luminance level corresponding to each partition; projecting an adjusted light beam to a surface of a DMD (Digital Micromirror Device) light valve by the luminous flux control element; and modulating the light beam and projecting the light beam into a projection lens for imaging display by the DMD light valve according to an image display drive signal of the to-be-projected display image. According to the image projection display method, the luminance distribution of a projection display image can be automatically controlled according to the luminance level of each partition of the to-be-projected display image, thereby adjusting contrast of the projection display image. The invention also provides an optical engine.

Description

technical field [0001] The present disclosure relates to the field of projection display, in particular to an image projection display method and an optical engine. Background technique [0002] As an important computer graphics and image output device, the optical engine is more and more popular in teaching, demonstration, entertainment, work and so on. DLP (Digital Light Processing, digital light processing technology) optical engine is an optical engine that uses a special light source modulation method. Due to the use of a full digital reflection method, the DLP optical engine can not only make the projected display image more detailed, but also effectively reduce the size of the image. The volume and weight of the optical engine are widely used. [0003] In the DLP optical engine, a DMD (Digital Micromirror Device, digital micromirror device) light valve is used as a main component to realize a digital optical processing process. The white light emitted by the light s...

Claims

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Application Information

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IPC IPC(8): H04N9/31
CPCH04N9/3152H04N9/3155H04N9/3197
Inventor 吴超赵一石王宇
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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