CN1940637A - Color-wheel index adjuster and its production - Google Patents
Color-wheel index adjuster and its production Download PDFInfo
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- CN1940637A CN1940637A CN 200510047306 CN200510047306A CN1940637A CN 1940637 A CN1940637 A CN 1940637A CN 200510047306 CN200510047306 CN 200510047306 CN 200510047306 A CN200510047306 A CN 200510047306A CN 1940637 A CN1940637 A CN 1940637A
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- color
- wheel index
- wheel
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- light detecting
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Abstract
An index regulation device of color wheel consists of light sensing unit for sensing displayed image of regulation pattern and for converting it to be color temperature, and control unit for regulating index value of color wheel according to color temperature provided by sensing unit.
Description
Technical field
The present invention relates to color-wheel index (COLOR WHEEL INDEX) adjusting gear and method thereof, relate in particular in the optical system of digit optical processing DLP (DIGITAL LIGHT PROCESSING) and utilize colour temperature to adjust a kind of devices and methods therefor of color-wheel index automatically.
Background technology
DLP (DIGITAL LIGHT PROCESSING) is a new display mode that compares favourably with LCD (Liquid Crystal Display) projection (Projection) system (System), is a kind of method of utilizing reflection device to realize high-definition screen.
That is to say, hundreds thousand of reflection devices are integrated on the chip, and utilize it to reflect selectively, realize high brightness, high-resolution a kind of image display technology with this.
This technology is to hint obliquely at machine, cathode ray tube (CRT), and a kind of image display technology that grows up on the basis of liquid crystal indicator (LCD), the characteristics different with LCD are that it is a reflection-type device.
The core of DLP is digital micro-mirror chip DMD (Digital Micro-mirror Device) device, integrated identical millions of the micro mirrors (Micro mirror) of resolution in this device; DLP is exactly by being used for controlling chip (chip) formation that each catoptron of DMD is used.
Fig. 1 is the accompanying drawing that is used for illustrating the DLP optical system.
With reference to Fig. 1 as can be known, optical system will provide irradiation light to DMD14; Then according to picture signal determine each micro mirror be with the state of opening (on) irradiate light to screen? it still is the problem of shining to the direction that does not have screen with the state of closing (off).
Traditional DLP optical system is to be made of following several sections, is provided with light source 10 that is:; Be provided with bar-shaped camera lens 11, so that the light of light source 10 emissions is passed through; Be provided with color wheel 12, be used for making white light to be divided into the rgb light line by bar-shaped camera lens 11; Be provided with amasthenic lens (Condensing Lens) 13, be used for converging light through color wheel 12; Be provided with prism 15, the light through amasthenic lens 13 is reflected; Be provided with DMD 14, the irradiate light that is used for reflecting from prism 15 is to screen; Be provided with projection lens 16, be used for amplifying light from the DMD reflection.
DLP optical system with said structure will be converged from the white light of the light source 10 emission inner curvature by catoptron; The light that will be converged is by light tunnel (Light Tunnel) or bar-shaped camera lens (Rod Lens) 11 then.
Bar-shaped camera lens 11 is faced mutually by four little and long mirrors and is constituted; By the light of bar-shaped camera lens 11, will be become even by Luminance Distribution after the irregular reference.
Allow the light luminance uniform purpose that becomes be to make the light luminance that shines at last on the screen to become even; Bar-shaped camera lens 11 with this function is a very important optical device in the display device of projection pattern.
Through the light of bar-shaped camera lens 11, a coloured silk wheel 12 that is used for color separation will be passed; Color wheel 12 will cooperate the vertical synchronization of image to be rotated.
Light through color wheel 12 will pass amasthenic lens (Condensing Lens) 13, reflect by prism 15 then, shine on the DMD14.
Prism 15 will be according to the incident angle of light, can make it carry out total reflection or sees through.
Shine light on the DMD 14 and will the directive screen still be the place outside the directive screen, depend on the state of the micro mirror of controlling by the sampled pixel value, promptly depend on its open mode and closing state.
Reflect the light of directive screen afterwards from DMD 14, after will obtaining amplifying by projection lens, shine on the large-screen.
Fig. 2 is the coloured silk wheel accompanying drawing that is used for illustrating the DLP optical system.
With reference to Fig. 2 as can be known, color wheel 12 is driven by direct current motor (DC MORTOR) 17, is provided with RGB filter plate (Filter).
In addition, in order to make the rotational speed of color wheel 12 consistent with the synchronizing signal of image, also post color-wheel index mark (Index Mark) 18 with colour pase.
The RGB filter plate can carry out 360 deg to paste respectively after the trisection; Can also paste twice to identical color afterwards by six five equilibriums, reduce to see through a certain color and allow direct current motor 17 need the angle of rotation with this, and then reduce the rotational speed of direct current motor 17.
Usually, will be called spot definition (Spot size) by the light width of bar-shaped camera lens 11; Because light will not form primitive color light during the border of RGB filter plate, therefore this light can not be used for display image.
, the light owing to converging on all boundary surfaces can form a white light, therefore can utilize it to come display white.
Index marker 18 is used as an identification marking, so that make rotational speed and the colour pase of color wheel 12 consistent with synchronizing signal in the picture signal.
In addition, index marker 18 can use light-absorbing black belt or paint.Owing to remove to shine infrared ray to index marker 18, remove to detect the infrared ray that is reflected then, therefore can make the coloured silk that rotates by direct current motor 17 take turns 12 speed and colour pase, consistent with synchronizing signal.
But some deviations can take place in the position of pasting index marker 18 in each operation; If this deviation exceeds certain scope, will make the light of picture signal and color wheel 12 inconsistent so, can't obtain high-quality image.
For this reason, a kind of method that is used for adjusting the color-wheel index value has appearred; The method of this use is on image display, provides adjustment pattern as shown in Figure 3, and utilizes this pattern to adjust in manual mode.
For example, under the situation that demonstrates adjustment pattern as shown in Figure 3, white balance meter (WHITEBALANCE METER) is placed the center (green GREEN) of adjusting pattern, when moving up and down then, the intermediate value of two points of color coordinate Y value that change is defined as default value.
But, the problem that this method of once using exists, small variation takes place the angle that coloured silk is taken turns even if Here it is also can make form and aspect change, thereby can't remove the index value of the color wheel of correct adjustment.
Therefore especially above-mentioned method is a vision of utilizing the people, exists a problem, and that is exactly that slightly deviation can take place for everyone.
Summary of the invention
The present invention develops in order to address the above problem.The objective of the invention is to eliminate the deviation that takes place because of the people, a kind of color-wheel index adjusting gear and the method thereof that can automatically go to adjust the color-wheel index value is provided.
In addition, also having a purpose, is because the present invention can automatically go to adjust the color-wheel index value, and therefore the index value of color wheel is adjusted in more accurate the going of energy.
Color-wheel index adjusting gear of the present invention, add picture signal and the reflection by many micro mirrors forms in the display device of image, having the following structures feature, that is: be provided with the light detecting means, be used for the adjustment pattern image that perception shows, and it is transformed into colour temperature; Be provided with control part, it will adjust the color-wheel index value according to the colour temperature of light detecting means.
Also having a feature is respectively to be provided with a light detecting means respectively in the above and below of display part.
Also having a feature is that control part will be set the intermediate value of color-wheel index value for the intermediate value of color wheel, so that allow the light detecting means of top and the detected colour temperature of light detecting means of below be included in the scope of a setting.
Color-wheel index method of adjustment of the present invention has following phase characteristic, is provided with a stage that the color-wheel index value is set at arbitrary value that is:; Be provided with a stage of going to adjust the color-wheel index value, be included in the scope of a setting by the detected colour temperature of light detecting means that is installed in the display part top so that allow, be included in the scope of setting if be installed in the colour temperature of the light detecting means of top, will be stored the color-wheel index value in this time so; Be provided with a stage of going to adjust the color-wheel index value, be included in the scope of a setting by the detected colour temperature of light detecting means that is installed in the display part below so that allow, be included in the scope of setting if be installed in the colour temperature of the light detecting means of below, will be stored color-wheel index value at this moment so; Be provided with the stage that an intermediate value with the color-wheel index value is set at the color-wheel index value of image display.
The setting range that to also have a feature be colour temperature is 9200K-9400K.
Also have a feature to be provided in a side of the light detecting means of top, will become colour temperature to the image transformation of low order level-off; And the light detecting means that is located at the below will become colour temperature to the image transformation of high-order level-off.
Advantageous effect of the present invention is as follows:
The present invention can provide automatic adjustment color-wheel index value, and more correct color-wheel index adjusting gear and the method thereof adjusted.
Especially in traditional hand color-wheel index method of adjustment, the situation difference because of the people produces deviation will generate a more correct and consistent color-wheel index adjusted value.
Description of drawings
With reference to the accompanying drawings color-wheel index adjusting gear of the present invention and method thereof are described:
Fig. 1 is the accompanying drawing that is used for illustrating DLP (digit optical processing) optical system.
Fig. 2 is the accompanying drawing that is used for illustrating the color wheel of DLP optical system.
Fig. 3 is used for illustrating the accompanying drawing of adjusting pattern under the situation of manual adjustment color-wheel index value.
Fig. 4 is the notion accompanying drawing that is used for illustrating color-wheel index adjusting gear of the present invention and method thereof.
Fig. 5 is used for illustrating the image display structure in general accompanying drawing that utilizes the DLP optical system.
Fig. 6 is the process flow diagram that is used for illustrating color-wheel index method of adjustment of the present invention.
The symbol description of accompanying drawing major part:
10: light source 11: bar-shaped camera lens
12: color wheel 13: amasthenic lens
14: digital micro-mirror chip (DMD) 15: prism
16: projection lens 17: direct current motor
18: color-wheel index mark 20: acceptance division
21: image processing part 22: display part
23: control part 24: drive division
25: the light detecting means
Embodiment
Fig. 4 is the notion that is used for illustrating color-wheel index adjusting gear of the present invention and method thereof.
Color-wheel index adjusting gear of the present invention is located at the front of image display; Be shell (CABINET) inboard that optical sensor (SENSOR) is located at the front in an embodiment.
As shown in Figure 4, optical sensor respectively is provided with one respectively at upper and lower; Optical sensor, it will play the effect that the image transformation of output is become colour temperature.
When not carrying out the adjustment of color-wheel index conscientiously, on image, can be clear that the digital level (DIGITAL LEVEL) of 20-50 contrast level, and in the following digital level that can be clear that 180-220 contrast level of image.
Under the circumstances, above picture, be provided with one and will become the image transitions of low order level-off the optical sensor of colour temperature; And below be provided with one and will become the image transformation of high-order level-off the optical sensor of colour temperature.
The present invention will utilize this optical sensor to adjust the index value of color wheel.
In the centre of Fig. 4 as a reference, show 1-255 contrast level; This is the adjustment that is used for confirming color-wheel index, and whether that carries out is correct.
Fig. 5 is used for illustrating the structure in general figure of the image display that utilizes the DLP optical system.
As shown in Figure 5, image display is to be made of following several sections, is provided with acceptance division 20 that is:, is used for from other cities reception picture signal; Be provided with image processing part 21, be used for the picture signal that receives is converted to a signal that can show; Be provided with the display part 22 that can be shown as picture; Be provided with drive division 24, be used for driving the driving circuit that comprises color-wheel index; Be provided with light detecting means 25, it is located on the display part 22, is used for picture is transformed into colour temperature; Also be provided with control part 23, it will adjust the color-wheel index value according to the colour temperature of light detecting means 25, and allow image show by control.
As described above, light detecting means 25 is provided with one respectively separately in the above and below of display part 22, removes to detect the image of demonstration then, and it is transformed into offers control part 23 after the color temperature value.
Especially control part 23 will be adjusted the color-wheel index value according to color temperature value; And, the detected color temperature value of each optical sensor of light detecting means 25 to be limited within the limits prescribed by changing the mode of color-wheel index; Again the intermediate value of the color-wheel index value that changes is adjusted into the color-wheel index value.
The concrete scope that color temperature value can be specified in 9200K-9400K; The top light sensors to the color-wheel index value of color temperature value when being included in above-mentioned scope, with the below light sensors to the color-wheel index value of color temperature value when being included in above-mentioned scope in addition average after, as the color-wheel index value of image display.
By the color-wheel index value of this procedural image display device, be set at best state.
Fig. 6 is used for illustrating color-wheel index method of adjustment process flow diagram of the present invention.
At first, (CWI) is set at arbitrary value, i.e. default value with the color-wheel index value.(S100)
Remove to measure the color temperature value (C1) that the light sensors that is located at display part top arrives then; Go again to judge that scope that color temperature value is included in 9200K-9400K whether; When if color temperature value (C1) is not included in above-mentioned scope, just go to increase color-wheel index value (CWI), store and fake minimum value " MIN (CWI) " when the color-wheel index value (CWI) of color temperature value (C1) when entering above-mentioned scope.(S110)(S120)(S130)
In addition, remove to measure the color temperature value (C2) that the light sensors that is located at display part below arrives; Go again to judge that scope that color temperature value is included in 9200K-9400K whether; When if color temperature value (C2) is not included in above-mentioned scope, just goes to reduce color-wheel index value (CWI), and store as maximal value " MAX (CWI) " when the color-wheel index value (CWI) of color temperature value (C2) when entering above-mentioned scope.(S140)(S150)(S160)
At last, the maximal value of color-wheel index value " MAX (CWI) " and minimum value " MIN (CWI) " in addition average after, this value is set at the color-wheel index value of image display.
By this method will with the hand color-wheel index value adjustment method of traditional use white balance meter, will be able to quick and correct going adjust the color-wheel index value.
Claims (6)
1, a kind of color-wheel index adjusting gear is characterized in that comprising following parts: be provided with the light detecting means, be used for the adjustment pattern image that perception shows, and it is transformed into colour temperature; Be provided with control part, it will adjust the color-wheel index value according to the colour temperature of light detecting means.
2, color-wheel index adjusting gear according to claim 1 is characterized in that the above and below of described display part respectively is provided with a light detecting means respectively.
3, color-wheel index adjusting gear according to claim 1, it is characterized in that described control part will set the intermediate value of color-wheel index value for the intermediate value of color wheel, so that allow the light detecting means of top and the detected colour temperature of light detecting means of below be included in the scope of a setting.
4, a kind of color-wheel index method of adjustment is characterized in that comprising the following stage:
Be provided with a stage that the color-wheel index value is set at arbitrary value;
Be provided with a stage of going to adjust the color-wheel index value, be included in the scope of a setting by the detected colour temperature of light detecting means that is installed in the display part top so that allow, be included in the scope of setting if be installed in the colour temperature of the light detecting means of top, will be stored the color-wheel index value in this time so;
Be provided with a stage of going to adjust the color-wheel index value, be included in the scope of a setting by the detected colour temperature of light detecting means that is installed in the display part below so that allow, be included in the scope of setting if be installed in the colour temperature of the light detecting means of below, will be stored color-wheel index value at this moment so;
Be provided with the stage that an intermediate value with the color-wheel index value is set at the color-wheel index value of image display.
5, color-wheel index method of adjustment according to claim 4, the setting range that it is characterized in that described colour temperature is 9200K-9400K.
6, color-wheel index method of adjustment according to claim 4, the light detecting means above it is characterized in that being located at will become colour temperature to the image transformation of low order level-off; And the light detecting means that is located at the below will become colour temperature to the image transformation of high-order level-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510047306 CN1940637A (en) | 2005-09-29 | 2005-09-29 | Color-wheel index adjuster and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510047306 CN1940637A (en) | 2005-09-29 | 2005-09-29 | Color-wheel index adjuster and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1940637A true CN1940637A (en) | 2007-04-04 |
Family
ID=37958971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510047306 Pending CN1940637A (en) | 2005-09-29 | 2005-09-29 | Color-wheel index adjuster and its production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1940637A (en) |
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2005
- 2005-09-29 CN CN 200510047306 patent/CN1940637A/en active Pending
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