TW201120910A - Two dimensional colorimeter calibration apparatus - Google Patents

Abstract

A two dimensional colorimeter calibration apparatus includes a light source unit, a light guide unit, a sensing unit, a control unit, and a calibration unit. The light source unit produces a standard and stable light source. The light guide unit receives and modulates the standard light source to output a uniformed light source. The sensing apparatus detects light characteristic information, which includes a light source characteristic and a temperature characteristic. The control unit obtains light source information from the sensing unit and controls the standard light source of the light source unit by feedback. The calibration unit calibrates color and brightness characteristic of a to-be-calibrated device.

Description

201120910 ru/^ouwiOTW 32702twf.doc/n VI. Description of the Invention: [Technical Field] The present invention relates to a luminosity meter calibration technique capable of performing two-dimensional chromaticity and brightness on a device to be calibrated Correction. [Prior Art]

A flat-panel display whose image consists of a matrix of pixels. Each element consists of three primary colors, for example, three sub-genogens of red, green and blue, respectively, which correspond to the gray level of each primary color, thus constituting the desired color and brightness' to form a color image. The H-product competition has driven the industry's attention to image quality and product quality, so the standards of the instrument are particularly valued. Not only that, Mo Group,: 'such as led backlight, different color temperature backlight, OLED month ... search, also affect the instrument calibration results. From the perspective of objective measurement, the evaluation of the quality of the image is based on the price. Therefore, the display heart; need to rely on the waste business to do the calibration characteristics of the temperature and the different brightness and the need for the right time, the standard light source has a different color. In the face of light = spectrum will also be necessary to establish the instrument. The handle lacks a '7 degree tone characteristic mark. [Invention] An embodiment of the present invention provides an embodiment of the one-dimensional brightness colorimeter calibration 201120910 Γυ/=-〇υυ^ι W 32702twf.doc/n device, which can output a uniform The light source is used to correct the chromaticity and brightness of the instrument to be tested. An embodiment of the present invention provides a two-dimensional luminance colorimeter luminance colorimeter calibration apparatus including a light source unit, a light guide unit, a sensing unit control unit, and a correction unit. The light source unit produces a standard light source. The light guide unit receives and modulates the standard light source to rotate a uniform light source. The sensing unit detects the light source information of the light source unit, and includes a light source characteristic and a temperature characteristic. The control unit acquires the light source information by the sensing unit, and then feeds back the standard light source that controls the light source unit. The correction unit is used to correct the color and brightness characteristics of a standby instrument. The above described features and advantages of the present invention will become more apparent from the description of the appended claims. [Embodiment] + Equivalent measuring instrument is a two-dimensional image type luminance color chronograph, its correction mode 1 must be * degree, brightness correction and image field curvature correction, through the brightness tone characteristic standard, and then through the correction component and The filter is calculated by an algorithm to calculate the brightness and colorimeter of the positive two-dimensional image. , Tian second degree 卩 65 weeks standard | | can produce - uniform surface light source, and the color of the light source 'plate degree, can simulate backlight changes · ·. Not only can provide backlight = nine, but also enable the industry to have a standard traceability method in actual use, which can solve various disputes caused by different measurement results of clothing manufacturers and midstream and downstream manufacturers or consumers. Dimensional brightness colorimeter calibration device, in addition to a uniform test light source, can also be used to measure the color and brightness of the instrument to measure the color and brightness of 201120910 n; / yeWi0TW32702twf.doc / n ,, so that the corrected instrument to be tested can be used Do a follow-up measurement display. The following examples are given to illustrate the invention, but the invention is not limited to the embodiments shown, and the examples may be combined with each other as appropriate. ^ According to the implementation of the system - two-dimensional luminance colorimeter ^ device does not think. Refer to ® 1, the two-dimensional luminance chromaticity 6 parent positive I of this embodiment, for example, it can use the light detection, the detector just 1 〇 6 to do the feedback control of the light source, __, / / dish degree α, shell j state to you The media source is 70 50 available LED components 1 (8) ^ constitutes - LED light source unit which can be composed of a plurality of LED components (10) and - T FD 7 Γ in. inn 政, *, 早凡102. The sequential light-emitting or continuous-band method can be used to measure the light characteristics of the object 100, such as the temperature of the bright 100 component, such as the error degree, the chromaticity, the relative color temperature, and the like. The LED integrated element 10 is then obtained by the ° temperature sensor 106. The characteristic two sets the temperature and light characteristics to the wheel-in end of the light guiding device 52. The light source generated by the source unit 50 borrows the ball to mix into a uniform surface. The light guide 52, for example, may be output 52 at the wheel end (10), for example, by view. The light guide is adjusted at the fixed LED's light detector V (in) 116. The amount of light is changed to change the amount of light output, and the light control element 112 adjusts the source unit 50 to a standard device for achieving the brightness gradation in another implementation. Light setting. The light control element 112 can be replaced by €(:1^), as shown in Fig. 4 52, there is also a diffusion plate 丨丨1^ for changing the amount of output light. The light guide device (4) is a surface light source of 5 m. 5 201120910 ru / ^δυυζυ i'W 32702twf.doc/n Using a standard light source of the tone characteristic outputted by the light guiding device 52, a device under test (DUT) 300 is measured to obtain measured chromaticity information and brightness. Then, uniformity calibration and color calibration are performed through the color and uniformity corrector 302 to obtain uniformity of chromaticity and brightness of the two-dimensional image chrominance luminance of the apparatus to be tested. Strict calibration data. This calibration data can be used to calibrate the instrument to be tested 300 so that the instrument to be tested can accurately measure and evaluate the optical characteristics of the display device, such as the display, the illumination source and the illuminating element, or as a color measurement. In addition, at the output end of the light guiding device 52, a transmissive filter 119' can be further provided with an image distortion corrector 3〇4, which can measure the resolution and/or image distortion, and The image distortion corrector 201120910 ru/y6Uu20TW 32702t\vf.doc/n at least one of the chromaticity, the degree, the spectrum, and the correlated color temperature, and feedbacks the light characteristic parameter to the control solution element 142. The temperature sensing unit 132 For detecting the temperature characteristic of the light source unit 50. The visual effect function detecting unit 134 is configured to detect the light source characteristic of the light guiding unit 52. The light 'unit 52 includes a light output adjusting unit 140 to adjust an incoming light amount of the receiving standard light source. The light output adjusting unit 140 can control the standard tone characteristics through the sensing unit by 5 weeks of the photocell, 112.

The light guide unit 52 further includes a light homogenizing unit 138 that causes the standard light source to be both hooked. The 5th light homogenization unit 138 includes at least one of an integrating sphere and a diffusion sheet. . . The control unit 142 includes a temperature control unit 144, a light characteristic control unit 146, a sequential control unit 148, and a feedback control unit=150. The control unit 144 receives the output information of the sensing unit 128 to control the light source unit $50. Temperature-related light characteristics. The light characteristic control unit 146 receives the output information of the sensing unit 128 to control the light characteristics of the light source unit π: the sequential control unit 148 controls the light source unit 5 to illuminate the plurality of hair sets 122 of the light source unit 5G in a time-sequential manner. The feedback control unit 15 receives the output information of the sensing unit 128 to output the information to the light source unit 50. Further, the light characteristic control unit 146 controls the light characteristics of the light source unit 5 to include at least one of the correlated color temperature, brightness, spectrum, and chromaticity. The temperature control unit U4 controls the temperature of the light source unit 50 to have a light exit characteristic of :]. The parental positive unit includes a standard color database 164 and a luminance database 174, a color correction processing unit 丨68, and a uniformity correction processing unit 176. a 201120910 ^u/yauuzuiW 32702twf.d〇c/n, the color correction processing unit 168 performs color correction according to the standard color database Μ* after the treatment of the instrument (DUT) 丨 6 () The color and positive data Π0 output is used as the correction after the instrument (10) to be calibrated. The uniformity correction processing unit 176 performs uniformity correction according to the brightness database Π4 for the school instrument 160 and outputs the uniformity correction data 178 as the correction after the instrument 160 is to be calibrated. °° θ In more detail, the brightness data and chromaticity data of the standard color database 164 and the brightness database 174 at the tone set by the standard light source are respectively supplied to the color correction processing unit 168 and the uniformity correction processing. Unit 176 is used. The color correction processing unit 168 performs a calculation process between a color data 162 measured by the instrument to be processed and the standard color database I64, which is, for example, three stimulation values corresponding to three standard primary colors, and a color tristimulus value. It is derived from the CIE1931_XYZ, which is a perceptual signal related to the human eye. The standard primary color is, for example, the ^sRGB color space defined by IEC 61966-2-1:1999. The color data 162 measured by the standard primary color and the instrument to be tested 16 is calculated to obtain a color positive information 170 of the instrument j6 to be tested. The uniformity correction processing unit 176 is to perform a calculation process between the refusal 172 and the brightness database 174 to obtain the brightness correction information 178 of the instrument 160 to be used for correcting the instrument to be calibrated (10). Brightness. - The following describes the computer system of the color correction processing unit 168 and the uniformity correction processing unit 176. The color correction processing unit 168 performs correction calculation based on three colors. 201120910 f υ /ysuu^OTW 32702twf.doc/n (1) (2): ^〇 r〇 z〇 X BS ^RS ZjiS (3)

[LUT^LUT,]· :[,]· y〇 [lut\

xR yr ZR

X

^^ZD

ZG

乂-i Ί χΓ.Ί (4) [LUTk} = Yns * Yr • ^GS YGiS Q rCi _Zrs ZR ^GS _ 2〇^GiS in equation (1) '[Xci,Yci,Zci] represents the color space Three color data coordinate values measured by the instrument 160 to be calibrated. After the color correction information [LUTk], the uncle's positive matrix is shipped to the corrected color [χης; ί Ynci, Znci]. As for the matrix data of [LUTk], the three primary colors, e.g., red (R) green (G) blue (B), are respectively corrected for the color, and the red light is measured first, as shown in the formula (2). For example, [XR, YR, ZR]* database 164 is for the three red (four) color materials, [Xrs, Yrs, Zrs] is the instrument to be tested; ^ the color data of the three stimulus values of red light, via Calculate the red: 7 conversion matrix [LUT]. Then, for example, the calculation of the red light correction to the green = 杈 positive transformation matrix [LUT2], which is calculated as Equation 0). The correction conversion matrix is calculated for the monitor light by the same square & Of course, the complete correction can be further corrected by the following calculations, but the complete correction matrix [LUTk] can be obtained by the same calculation method. This correction conversion matrix [LUTj is the color correction information 170, which can be used for color correction of the instrument to be tested. In addition, for the uniformity of the calibration, the luminance distribution measured by the instrument to be tested is, for example, distributed in a matrix of pixels, and the luminance distribution stored in the luminance database is also distributed in a matrix of pixels. After the comparison, the correction amount of each element can be obtained, that is, the brightness correction information 178, so that the brightness of the instrument to be tested can be corrected. In addition, in addition to correction of color and uniformity, a transmissive filter may be disposed at the output of the light guide 52 as needed. Figure 3 depicts a system block diagram of a two-dimensional luminance colorimeter correction device not according to an embodiment of the present invention. Referring to Figure 3, the output from the light guide 52 can be detected by a transmissive filter 180. The transmissive filter 18A includes a slang edge pattern 18A, a lattice pattern 180B, and various patterns 180C. The output light from the filter unit 180 is supplied to the instrument under test (DUT) 182, and additionally the output of the lattice pattern 180B provides subsequent reference material. The instrument to be tested 182 receives the light passing through the filter single τ 185 and then analyzes the measurement unit 184 to perform resolution analysis and correction. The device under test 182 receives the light passing through the filter 丨 (10). The image distortion is also measured by the image distortion measuring unit 186. Further, the image distortion obtained by the measurement of the '?,//the aberration-like unit 188 and the output data from the lattice pattern 180B are analyzed to obtain the image-scoring correction instrument 182. In the foregoing embodiment, the standard light source is produced by the LED, however, 〇 201120910 P07980020TW 32702twf.doc/n It is not the only way. For example, a cold cathode fluorescent lamp (CCFL) light source can also be used. 4 is a schematic diagram of a two-dimensional luminance colorimeter calibration apparatus according to an embodiment of the invention. Referring to Fig. 4, the light source of the present embodiment, for example, employs a cold cathode fluorescent lamp device 200' for a group of light source units 2'2 including a diffusion sheet 204, a cold cathode fluorescent tube 206, and a light guiding sheet 208. Thus, the cold cathode fluorescent lamp device 200 can output a light source to the subsequent light guiding device 52, as described in Fig. 1, and will not be described here.

FIG. 5 is a block diagram showing the system of the two-dimensional luminance colorimeter correction device of FIG. 4 according to an embodiment of the present invention. Referring to Fig. 5, in terms of system, the cold cathode fluorescent lamp device 200 includes a diffusion sheet 2〇4, a cold cathode fluorescent tube 2〇6, and a light guiding sheet 208. The output light of the cold cathode fluorescent lamp device 2 is outputted by the guide device to further homogenize to produce standard light, which is described again in conjunction with the mechanism I of FIG. As for the control of the hometown, after receiving the sensor function controller, the optical unit knife 52 is controlled by the optical characteristic, and the feedback unit 2Q6 outputs a control signal to the recording unit (10). By light: used to make corrections to the instrument to be tested, as shown in Figure 2. Bu Zhuang class μ —, the two-dimensional brightness of Figure 4 is more ‘two is a schematic diagram. 6 and FIG. 3, the correction mechanism is described in FIG. 5, and the cathode lamp device is generated as if the uniformity is OK, =::==2 201120910 P07980020TW 32702twf.d〇c/n The standard such as measuring the display To reach the standard of measurement. In addition, the present invention can also perform measurement of resolution and correction of image distortion. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention. It is intended that the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a two-dimensional luminance colorimeter correction device according to an embodiment of the present invention. 2 is a block diagram showing a system of a two-dimensional luminance colorimeter correction device according to an embodiment of the invention. 3 is a block diagram showing the system of a two-dimensional luminance colorimeter correction device according to an embodiment of the invention. 4 is a schematic view showing a two-dimensional luminance colorimeter correction device according to an embodiment of the present invention. FIG. 5 is a block diagram showing the system of the two-dimensional luminance colorimeter correction device of FIG. 4 according to an embodiment of the present invention. Figure 6 is a block diagram showing the system of the two-dimensional luminance colorimeter calibration of Figure 4 in accordance with an embodiment of the present invention. 12 201120910 JPU /V8U〇20TW 32702twf.doc/n [Main component symbol description] 50: Light source unit 52: Light guide device, 100: LED element 102: Cooling heat dissipation unit 104: Light detector 106: Temperature sensor 110 : Input terminal 112 : Light control element 114 : Reflector 116 : Visual effect detector 118 : Output 119 : Filter 122 : LED set #ln 124 : LED element 126 : Cooling heat sink unit 128 : Sensing unit 130: Light characteristic detecting unit 132: Temperature detecting unit 134: Visual effect detecting unit 138: Light uniformizing unit 140: Light output adjusting unit 142: Control unit 144: Temperature control unit 13 201120910 P07980020TW 32702twf.doc/n 146: Light characteristic control unit 148: Sequential control unit 150: Feedback control unit 160: DUT 162: Color data 164: Standard color database 168: Color correction processing unit 170: Color correction information 172: Luma data 174 Luminance database 176: uniformity correction processing unit 178: brightness correction information 180: filter 180A: oblique edge pattern 180B • lattice pattern 180C: extended detection pattern 182: instrument to be tested (DUT) 184: resolution Measuring unit 186 : Image Distortion Unit 188 : Image Distortion Correction Unit 300: DUT 302 : Color and Uniformity Corrector 304: Image Distortion Corrector

Claims (1)

201120910 rw/7〇ww20TW 32702twf.doc/n VII. Patent application scope: 1. A two-dimensional brightness colorimeter calibration device, comprising: a light source unit to generate a standard light source; - a light guide 7L early, receiving and modulating the The standard light source outputs a uniform unit...2 unit, detects the light source information of the light source unit, including the light source characteristic and a temperature characteristic; (4) the element, the light source information is obtained by the sensing unit, and then the feed source controls the source. The standard light source of 7 早 early; and ^ single 70 ' Μ correction - the color brightness characteristics of the instrument to be tested. The two-dimensional brightness colorimeter described in the first paragraph of Wei Wei, the school, the dan, the 丨: the filter unit is disposed in an output of the light guide unit, and the resolution and/or Correct image field curvature characteristics. For example, the two-dimensional luminance colorimeter described in the first item of the patent scope, the towel source sheet (the at least one (four) diode source unit includes a plurality of light-emitting diode elements and a uniform cold heat-dissipating unit. 2) The two-dimensional luminance colorimeter described in the third paragraph of the patent scope has different light characteristics. c^如/Please turn the two-dimensional brightness described in item 1. In the colorimeter, the sensing unit includes a temperature sensing component, and the cooling and cooling device is connected to the temperature component of the Wei temperature unit, and the temperature of the light element is closed. The two-dimensional luminance colorimeter correction device=, wherein the light guiding unit comprises: a light output adjusting unit to adjust an amount of light entering the standard system 15 .W 32702twf.doc/n 201120910; and a uniform light The two-dimensional luminance colorimeter correction device according to claim 6, wherein the light output adjustment unit of the light guide unit comprises a light control element, the light control element Can be aperture or aperture, controlled by the sensing unit A two-dimensional luminance colorimeter correction device according to claim 6, wherein the light homogenizing unit of the light guiding unit comprises at least one of an integrating sphere and a diffusion sheet. The two-dimensional luminance colorimeter calibration device according to claim 1, wherein the sensing unit comprises: a photodetector for detecting the light source characteristic of the light source unit; a temperature sensor, Detecting the temperature characteristic of the light source unit; and a visual effect function detector to detect a light source characteristic of the light guide unit. 10. The two-dimensional luminance colorimeter calibration according to claim 9 The device, wherein the photodetector detects an optical characteristic parameter including at least one of a chromaticity, a brightness, a spectrum, and a correlated color temperature of the light source, and feeds the optical characteristic parameter to the control unit. The two-dimensional luminance colorimeter correction device of claim 9, wherein the temperature sensor detects a light source temperature parameter and feeds the light source temperature to the control unit. 12. As described in claim 9 Dimensional brightness colorimeter school 16 20112091ο ^20TW 32702twf.doc/n, ly<y its towel, the light effect of the device, the light in the material unit, and the feedback of the light source characteristics to the control a unit for controlling the amount of light emitted by the homogenized light source outputted by Chiyou V. Correction = h, which is fed by the two-dimensional luminance colorimeter as described in claim 12 of Patent No. 11, wherein the control unit includes a light control element for controlling the amount of light emitted according to the light characteristics of the light source and the light source. The two-dimensional brightness colorimeter described in claim 1 of the patent application scope is further provided, wherein the control unit comprises: The light-making characteristic controller receives an output information of the sensing unit to control a light characteristic of the light source unit; the present: & control 11' receives the output information of the sensing unit to control the line a temperature of the early element; the sequence control 11' control the light source unit to illuminate the plurality of light-emitting modules of the 5th cut early according to the time-time sequence; and the library controller receives the sensor unit Output information to give back information to the light source unit. The two-dimensional brightness colorimeter described in item 14 of the patent scope includes: j: B u 1, the medium-half light characteristic controller controls the light H color of the light source unit, brightness, At least one of the spectrum, and the chromaticity. Correcting the two-dimensional luminance colorimeter described in item 14 of the patent scope 2, the temperature of the light source unit is positive, and the two-dimensional luminance colorimeter described in the item 17 201120910 L \J f ^ :W 32702twf.doc/n A standard color and brightness database. A color correction processing unit, color correction of the color and brightness of the school to be calibrated 3 from the library and the library (4) Call this fresh color and brightness data -=: two-dimensional brightness as described in the heart item _ ΐ 2 f material and color data are provided separately for the color processing and the use of the uniform. 19. If the patent application scope flute correction skirt, the color of the item described in the second item "degree colorimeter: alAA & 々 々 夯 夯 正 正 正 正 正 正 正 正 正 正 正 正 正 正 正The standard color and brightness database is buried between calculations. 20. The two-dimensional luminance colorimeter=positive device as claimed in claim 19, wherein the color correction processing unit S measures the three standard primary colors=three secret values and the instrument to be tested. The color (four) material is calculated to obtain the color correction information of the instrument to be tested. ▲ 21. The two-dimensional brightness colorimeter k positive device as described in Item 17 of the patent scope of the Chinese patent is the uniformity correction processing unit for the instrument to be tested. Calculate processing between the brightness database. 22. The two-dimensional luminance colorimeter correction device according to claim 21, wherein the uniformity correction processing unit compares the measured luminance data with the standard color and luminance (four) library-averageness The data are calculated by each other to obtain the brightness correction information of the instrument to be tested. 18