JP2002323864A - Attachment for fitting optical sensor, and correcting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold the distance between an optical sensor and a screen always constant and to accurately correct the display state of the screen. SOLUTION: The attachment 1 for fitting the optical sensor is equipped with a U-shaped base 2 which can be mounted on the bezel of a display device across the screen and a stay window 3 for optical sensor fitting which is bored in the base 2. Inside the upper corner part of the base 2, an elastic member 4 is provided which stabilizes the connection with the upper end of the bezel when the attachment is mounted. Sheet type magnets 6A and 6B which are attracted to the bezel to make the gap with the screen uniform are provided at the upper and lower parts of the back of the base 2. Consequently, the distance between the optical sensor and screen and the detection area on the screen are made always unchanged and screen light can be detected. Color correction and gradation correction can be made with high precision.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment and a calibration device for mounting an optical sensor, and more particularly, to making the distance between the optical sensor and the screen always constant and using the optical sensor without touching the screen. The present invention relates to an optical sensor attachment that can be attached and a calibration device that can accurately calibrate the display state of a screen.

[0002]

2. Description of the Related Art When calibrating the gradation and white balance of a screen of a display device, it is necessary to mount an optical sensor such as a luminance sensor or an RGB sensor on the screen.

An example of a conventional procedure for mounting an optical sensor on a screen will be described. First, as shown in FIG. 13, the optical sensor 50 is brought closer to the display device 30. As shown in FIG. 14, a detection window 11 and a suction cup 13 are provided on the back of the optical sensor 50. Next, the worker operates the suction cup 1
3 is pressed against the center of the screen S of the display device 30 and sucked. FIG. 15 illustrates a front view of the display device 30 after the suction. FIG. 16 illustrates a side view of FIG.

[0004]

When the optical sensor 50 is attached to the screen S with the suction cup 13 as in the above-mentioned conventional technique, the degree of adsorption changes due to individual differences in pressing force and the like. There is a problem that it is difficult to keep the distance between the window 11 and the screen S constant. The optical sensor 50
Directly touches the screen S, when the display device 30 is a liquid crystal display device, there is a problem that uneven display unevenness occurs on the screen S and detection in an original display state cannot be performed.
Further, there is a problem that the accuracy of the gradation calibration and the white balance calibration is reduced due to the above problem.

Accordingly, a first object of the present invention is to provide an attachment for mounting an optical sensor, wherein the distance between the optical sensor and the screen is always constant and the optical sensor can be mounted without touching the screen. It is in. A second object of the present invention is to provide a calibration device capable of accurately calibrating a display state of a screen.

[0006]

SUMMARY OF THE INVENTION In a first aspect, the present invention provides a U-shaped base which can be mounted on a bezel of a display device in a longitudinal direction on a screen, and provided on the base. And an optical sensor mounting portion provided with the optical sensor mounting portion. In the optical sensor mounting attachment according to the first aspect, if the U-shaped base is mounted so as to sandwich the bezel of the display device, the position of the optical sensor mounting portion is constant with respect to the screen. For this reason, the distance between the optical sensor and the screen can always be kept constant. Further, since the optical sensor does not touch the screen, even in the case of a liquid crystal display device, uneven display unevenness does not occur on the screen, and detection can be performed in the original display state.

According to a second aspect of the present invention, in the optical sensor attachment having the above-mentioned structure, an elastic member for stabilizing the connection with the end of the bezel is provided inside at least one corner of the base. An attachment for mounting an optical sensor is provided. In the optical sensor mounting attachment according to the second aspect, the elastic member is provided between the inside of the corner of the base and the end of the bezel when the optical sensor is attached to the display device. The swing of the sensor can be reduced, and the coupling can be stabilized.

According to a third aspect of the present invention, in the optical sensor mounting attachment having the above-described structure, a sheet-like magnet is provided on the base so as to be attracted to the bezel and equalize a gap with a screen of the display device. An attachment for mounting an optical sensor, wherein the attachment is provided. In the attachment for mounting an optical sensor according to the third aspect, the sheet-shaped magnet is attracted to the bezel when the optical sensor is attached to the display device, so that the gap with the screen can be made uniform.
Therefore, the variation in the distance between the optical sensor mounting portion and the screen can be further reduced, and the screen light can be detected with high accuracy.

[0009] In a fourth aspect, the present invention provides a display device,
An optical sensor mounting attachment having the above configuration, an optical sensor attached to the optical sensor mounting portion, and a calibration device, comprising: a calibration executing unit that performs calibration according to a detection result by the optical sensor. provide. 4th above
In the calibration device according to the aspect of the present invention, the calibration is performed in accordance with the detection result of the optical sensor attached to the optical sensor attachment portion of the optical sensor attachment having the above configuration, so that the calibration can be performed with high accuracy.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the embodiments shown in the drawings. Note that the present invention is not limited by this.

First Embodiment FIG. 1 is a front view showing an optical sensor attachment according to a first embodiment of the present invention. FIG. 2 is a side view of FIG. FIG. 3 is a rear view of FIG. The optical sensor attachment 1 includes a U-shaped base 2 that can be mounted on a bezel (31, 31) of a display device (30 in FIGS. 5 to 8, 10, and 11) by vertically cutting the screen. , The base 2
An optical sensor mounting stay window 3 is provided. An elastic member 4 for stabilizing the connection with the upper end of the bezel at the time of the mounting is provided inside the upper corner portion of the base 2. As shown in FIG. 4, the elastic member 4 includes a non-slip elastic member 41 made of silicon rubber or the like, and compression springs 42A and 42B for urging the non-slip elastic member 41. Have been. In order to separate the cord of the optical sensor (10 in FIGS. 8 to 11) from the base 2, a section of the base 2 is punched out in a U-shape and bent at a lower portion on the front of the base 2. A body 5 protrudes. At the upper and lower portions of the back surface of the base 2, the screen (FIGS. 6, 10)
S) to make the gap with S) uniform,
6B is installed.

Next, a procedure for mounting the optical sensor using the optical sensor mounting attachment 1 will be described. First, as shown in FIG. 5, the optical sensor attachment 1 is brought close to the bezel 31 of the display device 30. The display device 30 is, for example, a liquid crystal display device that performs color display or monochrome display, a CRT (Cathode Ray Tube) device, or a plasma display device.

Subsequently, the worker mounts the attachment 1 on the upper and lower ends of the bezel 31 so as to push the upper and lower corners of the base 2 apart. At this time, the non-slip elastic member 4 of the elastic member 4 (see FIG. 4) is used.
2A and 42B bezel 31 by the elastic force of compression spring 41.
Pressed against the top of Also, the sheet magnet 6
A and 6B are attracted to the bezel 31 by magnetic force. FIG. 6 illustrates a front view after the mounting. FIG. 7 illustrates a side view of FIG. Attachment 1 for mounting the optical sensor
In the optical sensor mounting stay window 3 located substantially at the center of the screen S, and below the positioning window H1 are positioning holes H1 through which mounting pins (12-1 to 12-33 in FIG. 9) of the optical sensor are fitted. H3 is drilled.

Subsequently, as shown in FIG.
Closer to the optical sensor attachment 1. As shown in FIG. 9, a detection window 11, mounting pins 12-1, 12-2, 12-3, and a suction cup 13 are provided on the back surface of the optical sensor 10. However, the suction cup 13
It is not necessary.

Subsequently, the operator presses the optical sensor 10 to fit the mounting pins 12-1 to 12-3 into the positioning holes H1 to H3. FIG. 10 illustrates a front view after the fitting. FIG. 11 illustrates a side view of FIG.

According to the optical sensor attachment 1 according to the first embodiment, the optical sensor 10 is attached to the optical sensor attaching stay window 3 after the base 2 is attached to the bezel 31 of the display device 30. By attaching, the distance between the optical sensor 10 and the screen S can always be kept constant. Also,
Since the optical sensor 10 does not touch the screen S, the display device 30
Is a liquid crystal display device, detection can be performed in an original display state.

Second Embodiment FIG. 12 is a configuration diagram showing a calibration device according to a second embodiment of the present invention. The calibration device 200 includes the display device 3
0, an optical sensor attachment 1 attached to the display device 30 (see FIGS. 1 to 3), and an RGB sensor 1 attached to the optical sensor attachment 1.
10 and a standard color temperature-based tristimulus value X to be obtained by spectral colorimetric means having a spectral sensitivity corresponding to the color temperature (6500 K) of the standard light source D (Daylight) 65 specified by the CIE (International Commission on Illumination). (D65), Y (D65), Z (D6
5) A filter-type colorimeter 301 for calculating the value, and a personal computer 31 for performing color calibration based on the tristimulus values based on the standard color temperature.
0.

Next, the operation of the color calibration by the calibration device 200 will be described. The display signal output unit 311 of the personal computer 310 outputs a display signal expressing white (daylight) corresponding to the standard light source D65 to the display device 30. The RGB sensor 110 detects the light transmitted through the red filter Fr that transmits red light with the photodetector Dr, and detects the light transmitted through the green filter Fg that transmits green light with the photodetector D.
g, the light transmitted through the blue filter Fb, which transmits blue light, is detected by the photodetector Db, and the emission intensity (r, g, b) corresponding to each color is sent to the filter type colorimeter 301.

In the filter type colorimeter 301, the sensor tristimulus value calculator 302 calculates the light emission intensity (r, g,
Based on b), a sensor tristimulus value (X ′, Y ′, Z ′) reflecting the spectral sensitivity of the RGB sensor 110 is calculated. Next, the standard color temperature-based tristimulus value calculation unit 304 uses the standard color temperature conversion coefficient stored in the standard color temperature conversion coefficient storage unit 303 to generate the sensor tristimulus value (X ′,
Y ′, Z ′) is converted to the standard color temperature-based tristimulus value X (D6
5), Y (D65), and Z (D65) are output to the personal computer 310. The reason for performing such conversion should be obtained by using a spectral type colorimeter that measures the light to be measured by decomposing the light into a number of wavelength components using a spectral unit such as a prism or a plane diffraction grating. Absolute chromaticity or C
This is because the IE tristimulus value can be easily obtained by a calculation process using a filter-type colorimeter.

In the personal computer 310, the white balance adjusting unit 312 controls the standard color temperature-based tristimulus value X (D6
5) The display color is adjusted by adjusting the gain and balance of the display device 30 so that Y (D65) and Z (D65) match the tristimulus target values stored in the tristimulus target value storage unit 313. Calibrate to white light equivalent to standard light source D65.

The calibration device 2 according to the second embodiment described above.
00, the RGB sensor 110 attached to the optical sensor attachment 1 according to the first embodiment.
Since the display color (white balance) is calibrated based on the detection result, the calibration accuracy can be increased.

It should be noted that there is also provided a calibration device for performing a tone calibration for appropriately associating an original tone value inputted from a higher-level device (for example, a personal computer) using a display device with a display tone value for driving a display panel. The present invention can be applied.

[0023]

According to the optical sensor attachment of the present invention, by attaching the optical sensor to the optical sensor attaching portion of the base attached to the bezel of the display device, the distance between the optical sensor and the screen or the distance on the screen can be reduced. Screen light can be detected with the detection areas always equal. Further, according to the calibration device of the present invention, color calibration and gradation calibration can be performed with high accuracy by using the attachment for mounting the optical sensor.

[Brief description of the drawings]

FIG. 1 is a front view showing an attachment for mounting an optical sensor according to a first embodiment.

FIG. 2 is a side view of FIG.

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is an enlarged view showing an elastic member in the optical sensor attachment of FIG. 1;

FIG. 5 is an explanatory view showing a state in which the attachment for attaching the optical sensor is brought closer to the display device.

FIG. 6 is a front view after attaching the optical sensor attachment.

FIG. 7 is a side view of FIG. 6;

FIG. 8 is an explanatory diagram showing a state where the optical sensor is brought closer to the optical sensor attachment.

FIG. 9 is a rear view of the optical sensor attached to the optical sensor attachment shown in FIG. 1;

FIG. 10 is a front view after an optical sensor is attached.

FIG. 11 is a side view of FIG. 10;

FIG. 12 is a configuration diagram illustrating a calibration device according to a second embodiment.

FIG. 13 is an explanatory diagram showing a conventional method for attaching an optical sensor to a screen of a display device.

FIG. 14 is a rear view of the optical sensor in FIG. 13;

FIG. 15 is a front view showing a state where an optical sensor is attracted to a screen of a display device by a conventional mounting method.

FIG. 16 is a side view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Attachment for optical sensor attachment 2 Base 3 Stay window for optical sensor attachment 4 Elastic member 5 Plate 6A, 6B Sheet magnet 10 Optical sensor 11 Detection window 12-1 to 12-3 Mounting pin 13 Sucker 30 Display device 31 Bezel 41 Non-slip elastic body 42A, 42B Compression spring 110 RGB sensor 200 Calibration device 301 Filter-type colorimeter 310 Personal computer H1-H3 Positioning hole S screen

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C012 CC05 CC06 5C061 BB03 5G435 AA04 AA19 CC12 EE49 FF11 GG41 HH01 KK05 KK10

Claims (4)

[Claims] 1. An optical sensor mounting, comprising: a U-shaped base that can be mounted on a bezel of a display device by cutting the screen longitudinally; and an optical sensor mounting portion provided on the base. Attachment. 2. The attachment for mounting an optical sensor according to claim 1, further comprising an elastic member for stabilizing the connection with the end of the bezel inside at least one corner of the base. Attachment for mounting optical sensor. 3. The attachment for mounting an optical sensor according to claim 1, wherein a sheet-like magnet is attached to the base so as to be attracted to the bezel and to make a gap with a screen of the display device uniform. An attachment for mounting an optical sensor, wherein the attachment is provided. 4. A display device, the optical sensor attachment according to any one of claims 1 to 3, an optical sensor attached to the optical sensor attachment portion, and a detection result obtained by the optical sensor. And a calibration executing means for performing calibration.