JPH07270750A - Image display device - Google Patents

Abstract

PURPOSE:To observe a good stereoscopic picture at the time of observing e.g. a stereoscopic picture using two display systems by generating signals which control the amplitudes, etc., of signals in the transmission and display systems on the basis of picture information itself to compensate the difference between the two systems. CONSTITUTION:The driver control sections 2-1, 2-2 generate liquid crystal scanning signals from the signals processed in picture signal regenerative processing circuits 1-1, 1-2 and input them to LCD panels 3-1, 3-2, on which picture information is displayed by the liquid crystal scanning signals and lighting of backlight in the backlight control sections 4-1, 4-2. While viewing the transmitted display pictures having passed the LCD panels 3-1, 3-2, the observer operates an adjusting means 5 so that the right and left pictures visually agree with each other. The generation means 6 generates adjusting signals to be fed to the regenerative processing circuit 1-2 and the backlight control sections 4-2 to adjust the panel signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device using an LCD or the like, and more particularly to two display systems having an image signal (hereinafter also referred to as "video signal") reproduction processing circuit and display means such as an LCD panel. The present invention relates to an image display device in which an image signal from a recording medium is reproduced and displayed on each display means.

[0002]

2. Description of the Related Art Conventionally, a CRT display (hereinafter referred to as "CR" has been used as an image display device for displaying image information on display means.
Also called "T". ) And projection TVs have been proposed.

Generally, a cathode ray tube of a television, which is used for a display monitor of a desktop computer, emits an electron beam from an electron gun toward a phosphor screen and causes the phosphor to emit light to reproduce an image.

Recently, various liquid crystal displays (hereinafter also referred to as “LCD”) for displaying image information displayed on an image display element such as a liquid crystal have been proposed as image display devices of the same type as the CRT.

In LCDs, the orientation of liquid crystals with respect to the electric field is used to change the light transmittance to reproduce an image. Among these, various stereoscopic image display devices have been proposed in which two different image information are displayed by using two image display elements (display means) to perform stereoscopic observation. In this stereoscopic image display device, image information having parallax is displayed on the left and right eyes of an observer, and the stereoscopic effect is provided by observing the image information through the corresponding optical systems.

[0006]

In the conventional stereoscopic image display device, two systems of display means for image display are provided.
At this time, the two image signals passing through the two transmission / display systems are generally almost the same and only slightly deviated from the parallax between the left and right eyes. If the characteristics of the transmission and display systems of these two systems are exactly the same, the two display images are visually
It becomes the same in terms of contrast and the like, and even if they are superposed in an optical system having a vergence, it is possible to fuse images without a feeling of strangeness.

However, in general, it is very difficult in terms of configuration to make the two systems of transmission / display systems have many components and to have the same characteristics as the systems.

If the characteristics of the two systems are deviated, there is a visual difference between the image information for the left eye and the image information for the right eye, which makes natural fusion difficult and increases the awareness of separate image information. The feeling is fading. Even if they are forcibly merged, a flicker becomes conspicuous and a flickering of the screen becomes conspicuous, which causes a problem that the resolution is deteriorated.

The present invention uses one of two display systems for displaying an image so as to correct the difference between the displayed image information itself when observing a stereoscopic image or the like. It is an object of the present invention to provide an image display device capable of observing a good stereoscopic image by providing an adjustment signal generating means for generating an adjustment signal capable of adjusting the signal amplitude and the dark level value of the transmission / display system.

[0010]

An image display apparatus according to the present invention comprises: (1-1) An image signal reproduction processing circuit electrically performs image processing on the image signal into a predetermined signal, and the image signal reproduction processing circuit The driver control unit creates a scanning signal based on the image information from the signal from, and two display systems are provided for displaying the image information on the display means using the scanning signal from the driver control unit. Input the adjustment signal from the adjustment signal generating means to at least one of the display system,
It is characterized in that the image information displayed on the display means is adjusted.

Particularly, the adjustment signal from the adjustment signal generating means is for adjusting an electric image signal such as an image signal amplitude and an offset value, and the adjustment signal generating means receives a control signal inputted from the outside. It is converted into an adjustment signal and input to the image signal reproduction processing circuit and a backlight control unit for illuminating the display means, and the adjustment signal generation means has a fixed relationship between the two display systems. It is characterized in that an adjustment signal is input, and that the adjustment signal input to the backlight control unit is a signal relating to the adjustment of the light amount.

(1-2) The image signal is subjected to electrical image processing by the image signal reproduction processing circuit to be a predetermined signal, and the scanning signal based on the image information is provided by the driver control unit from the signal from the image signal reproduction processing circuit. When displaying the image information on the display means by using the scanning signal from the driver control section, the image display light of the display means is detected by the image display light detection means, and Two display systems are provided in which the calculation means performs a predetermined calculation based on the image data, and at least one of the two display systems from the adjustment signal generation means is based on a signal from the calculation means of the two display systems. It is characterized in that an adjustment signal is input to one of the display systems to adjust the image information displayed on the display means.

In particular, the adjustment signal from the adjustment signal generating means adjusts an electric image signal such as an image signal amplitude and an offset value, and the adjustment signal generating means receives a control signal inputted from the outside. It is converted into an adjustment signal and input to the image signal reproduction processing circuit and a backlight control unit for illuminating the display means, and the adjustment signal generation means has a fixed relationship between the two display systems. It is characterized in that an adjustment signal is input, and that the adjustment signal input to the backlight control unit is a signal relating to the adjustment of the light amount.

Further, setting means for setting a detection area for detecting the image display light on the screen of the display means by the image display light detecting means, and moving the image display light detecting means to the position set by the setting means. And a timing for outputting the adjustment signal output from the adjustment signal generating means, the setting means setting the detection area based on the input operation member or the image signal, Is provided with an adjustment timing generation means capable of arbitrarily setting

(1-3) The image signal is subjected to electrical image processing by the image signal reproduction processing circuit to form a predetermined signal, and the scanning signal based on the image information is provided by the driver control unit from the signal from the image signal reproduction processing circuit. And a display system for displaying image information on the display means by using the scanning signal from the driver control section is provided, and at least one of the two display systems is adjusted by the adjustment signal generating means. When a signal is input and the image information displayed on the display means is adjusted, the image display lights of the two display means are mutually detected by one image display light detection means in a time division manner, and the display system is It has an arithmetic means for performing a predetermined arithmetic operation based on the image data from the image display light detecting means, and the adjustment signal generating means generates the adjustment signal based on the signal from the arithmetic means. As That.

Further, setting means for setting a detection area for detecting the image display light on the screen of the display means by the image display light detecting means, and moving the image display light detecting means to the position set by the setting means. And a timing for outputting the adjustment signal output from the adjustment signal generating means, the setting means setting the detection area based on the input operation member or the image signal, Is provided with an adjustment timing generation means capable of arbitrarily setting

[0017]

Embodiment 1 FIG. 1 is a block diagram of the essential parts of Embodiment 1 of the present invention. In the present embodiment, the case where two pieces of image information with parallax for the left eye and right eye of the observer are displayed on the respective display systems 101 and 102 to observe a stereoscopic image is shown.

In FIG. 1, the image signals for the left eye and the right eye which are reproduced from some recording medium from the left side or are output as they are from a known image pickup system for stereoscopic image capturing are respectively Are input to the image signal reproduction processing circuits 1-1 and 1-2 of the display systems 101 and 102. Image signal reproduction processing circuit 1
In -1, 1-2, gain control, synchronization separation, luminance signal reproduction processing, color signal reproduction processing, etc. are performed on the input image signal. Driver control section 2-1 and 2-2
Generates a liquid crystal scanning signal to be applied to an LCD panel as a display means from the signals processed by the image signal reproduction processing circuits 1-1 and 1-2, and inputs the liquid crystal scanning signal to the LCD panels 3-1 and 3-2.

The liquid crystal scanning signal at this time and the backlights of the backlight control units 4-1 and 4-2 are turned on to determine LC.
Image information is displayed on the D panels 3-1 and 3-2. Backlight control section 4-1 and 4-2 to LCD panel 3-
The observer operates the image signal / backlight adjusting means 5 so that the left and right display images visually coincide with each other while viewing the display transmission image passing through the liquid crystals 1 and 3-2.

According to the operation, the adjustment signal generating means 6 generates an image signal adjustment signal to the image signal reproduction processing circuit 1-2 for the left eye, for example, and a backlight adjustment signal to the backlight control section 4-2. . The signal amplitude and dark level of the image information displayed on the LCD panel are made variable by the adjustment signal at this time.

In this embodiment, the display system 10 for the left eye of the observer is used.
Although the adjustment signal is sent to each circuit of No. 1 to adjust the display image, the adjustment may be performed by the display system 102 for the right eye or both display systems.

Although the LCD panel is used as the display means in the present embodiment, other display means such as a CRT display may be used.

In this embodiment, as described above, it is possible to adjust the image signal or the light amount of the backlight while observing the display image itself, so that the characteristics of the entire transmission / display system can be easily matched. I am trying.

FIG. 2 is a block diagram of the essential portions of Embodiment 2 of the present invention. In this embodiment, compared to the first embodiment shown in FIG. 1, the reproduction signals of the respective systems of the display system 101 for the left eye and the display system 102 for the right eye are input to the image signal reproduction processing circuits 1-1 and 1-2. To L
The image display process up to the CD panels 3-1 and 3-2 is the same.

In this embodiment, the backlight control section 4-1 is provided.
The observer operates the image signal / backlight adjusting means 5 so that the display images on the left and right are visually coincident with each other while the observer sees the display transmission image which has passed through the liquid crystal of the LCD panels 3-1 and 3-2 from 4-2. is doing. Then, according to the operation, the adjustment signal generating means 6 sends the image signal adjustment signal to the image signal processing circuits 1-1 and 1-2, and the backlight control units 4-1 and 4-2.
A backlight adjustment signal is being generated.

At this time, the adjustment operation may be performed by providing operation parameters for both image information or one image information. When only one image is used, the adjustment signals to both display systems have a correlation (constant relationship). For example, in the case of an amplitude adjustment signal, one attenuation amount and the other The amplification amounts are made to be opposite to each other so that a signal for adjusting both display systems at the same time is generated.

As described above, in the present embodiment, it is possible to adjust the light amount of the video signal or the backlight while observing the display image itself so that the characteristics of the entire transmission / display system can be easily matched. In the example, both display systems can be adjusted more quickly.

FIG. 3 is a block diagram of the essential parts of a third embodiment of the present invention. Compared to the first embodiment shown in FIG. 1, this embodiment calculates image display light detection means 12-1 and 12-2 such as an image sensor and the average value, maximum value and minimum value of image information (image data). Computation means 11-1, 11-2 for performing the computation means 1
The difference is that an adjustment signal generating means 6 for data comparison / calculation for comparing / calculating the data obtained by 1-1 and 11-2 to generate an adjustment signal is provided, and other configurations are the same. is there.

In this embodiment, as in the case of the first embodiment shown in FIG. 1, the left and right eyes reproduced from some recording medium from the left side or output directly from a known stereoscopic image pickup system. Image signals are input to the image signal reproduction processing circuits 1-1 and 1-2 of the display systems 101 and 102, respectively.

The image signal reproduction processing circuits 1-1 and 1-2 perform gain control, synchronization separation, luminance signal reproduction processing, color signal reproduction processing, and the like. Driver controller 2-1
2-2 generates a liquid crystal scanning signal to be applied to the LCD panel from the signals processed by the image signal reproduction processing circuits 1-1 and 1-2, and inputs the liquid crystal scanning signal to the LCD panels 3-1 and 3-2. The liquid crystal scanning signal at this time and the backlight control units 4-1 and 4-
The image information is displayed on the LCD panels 3-1 and 3-2 when 2 is turned on.

Next, display transmitted light that has passed through the liquid crystal of the LCD panels 3-1 and 3-2 from the backlight control units 4-1 and 4-2 is sandwiched between the LCD panels 3-1 and 3-2, and the backlight is provided. The image display light detection means 12-1 and 12-2 located on the opposite side of the control units 4-1 and 4-2 capture the light.

The image display light detecting means 12-1, 12-
2 is substantially the same size as the LCD panels 3-1 and 3-2,
For example, a two-dimensional image sensor or the like is used. From the image data obtained by the image display light detecting means 12-1 and 12-2, the calculating means 11-1 and 11-2 calculate and obtain the average value, the maximum value and the minimum value of the image information. The calculation at that time is performed by, for example, performing calculation on a memory using a field memory, or obtaining an average value by an integrating circuit, and obtaining a maximum value and a minimum value by a peak hold circuit.

The above sequence is applied to the left and right display systems 101,
102, and the image data obtained respectively are input to the adjustment signal generating means 6 for data comparison / calculation.

In the adjusting signal generating means 6, the calculating means 11-
The maximum value and the minimum value are compared from the image data from 1 and 11-2 to obtain the signal amplitude difference, and the average values are compared to obtain the signal offset value difference. Based on the obtained data, to one (or both) image signal reproduction processing circuit 1-2 (1-1) so that the display images of the left and right display systems 101 and 102 visually match. The backlight adjustment signal is generated from the image signal adjustment signal to the backlight control unit 4-2 (4-1).

Here, two image display light detecting means 12-
Since 1 and 12-2 also have individual differences, the difference is obtained in advance and added to the adjustment signal.

In the present embodiment, an adjustment signal is sent to the circuit of the display system 101 for the left eye for adjustment, but this is adjusted so that both display systems 101 and 102 are adjusted at the same time as in the second embodiment. You may make it a different structure. If the interval of generation of the adjustment signal is too short, the average value, the maximum value and the minimum value cannot be detected. Therefore, it is preferable that the adjustment signal be generated once per field.

In addition, since there is basically no limitation when the interval of generation of the adjustment signal is long, if the system is stable electromechanically, that is, if the characteristic of the system does not change, it is set to 1 when the power is turned on. Just turn it up. In the case of an unstable system, changes in system characteristics can occur in a short period of time, so it is advisable to make adjustments once every several tens of frames.

In this embodiment, the image display light detecting means 12-
1, 12-2 are arranged at positions facing the backlight control units 4-1 and 4-2 with the LCD panels 3-1 and 3-2 interposed therebetween. Generally, the observer's viewpoint is at that position.

Therefore, in this embodiment, as shown in FIG. 7, the LCD panel 3-using half mirrors 41-1 and 41-2.
1, 3-2 and viewpoint, or LCD panel 3-1, 3-
2 and the image display light detection means 12-1 and 12-2 are arranged so as to have a positional relationship of 90 °.

FIG. 5 is a block diagram of the essential parts when one element is modified in the third embodiment of FIG. 3 when the intervals between the generation of adjustment signals are long.

In FIG. 5, the optical system from the LCD panels 3-1 and 3-2 to the image display light detecting means 12 is devised so that one image display light detecting means 12 is replaced by the optical shutters 8-1, 8-.
2 display systems 10 by switching 2 and switch 9.
1, 102 are configured to be shared.

With such a configuration, there is no subtle difference caused by the individual difference of the image display light detecting means 12, so that the image information can be adjusted more accurately.

As described above, in this embodiment, the image display light detecting means is provided to compare the display images of the two systems, and one or both of the image signals and the backlight light amount are automatically adjusted based on the comparison. Therefore, the characteristics of the two transmission / display systems as a whole are matched. Further, in this embodiment, these scannings can be automatically performed.

In the third embodiment, the timing for adjusting the display images of the two left and right systems to coincide with each other is automatically determined when the power is turned on or every tens of frames.

4 is provided in a part of the configuration of FIG. 3, and FIG. 6 is provided in a part of the configuration of FIG. 5 with an adjustment timing generating means 10 for displaying the display timing of the adjustment signal output from the adjustment signal generating means 6. It is a principal part block diagram when an observer who observes makes it possible to adjust at any time.

In the configuration shown in FIGS. 4 and 6, the start signal is output from the adjustment timing means 10 at the same time when the observer pushes the push switch or the like to perform image detection, data calculation, and generation of the adjustment signal, thereby displaying left and right. Adjusting the image.

Next, a fourth embodiment of the present invention will be described.
The configuration of the fourth embodiment is similar to that of the third embodiment shown in FIG. The image display light detecting means in the third embodiment is a two-dimensional image pickup device having the same size as the LCD panel, and the adjustment signal is generated based on the image data of the entire screen.

On the other hand, in this embodiment, a two-dimensional image pickup device or a one-dimensional image pickup device having a small number of pixels is used so as to detect a signal of a part of the entire screen instead of the entire screen.

When a two-dimensional image pickup device having a small number of pixels is used, the image detection is performed by adjusting the image detection area near the center of each screen as shown in FIG. The reason why the detection range is set to the center of the screen is that the main subject of the image is generally located in the center of the screen, and there is almost no problem if the display of the main subject is correct.

However, when the subject is not in the center of the screen,
As shown in FIG. 8C, the main subject is at the right end in the image for the left eye,
In the case of a panoramic stereoscopic mixed image that fuses a part of the image at the left end in the image for the right eye, the detection range of the image is moved by the setting means, and moved so as to detect the range centered on the main subject. The image display light detection means is moved by the means to move the detection range.

As the method of movement by the moving means, an optical system in which the refraction direction is variable so that the position of the image pickup device itself is moved or the optical axis to the image pickup device is decentered so that image light in the detection range is picked up Is done using. The setting of the detection range by the setting means shows the detection range in the outer frame of the screen as shown in FIG. 9 or displays the detection range frame on the screen only when setting it, but not shown. Operation member,
For example, a slide lever mechanically interlocking with the image pickup device or an up / down switch electrically interlocking with a motor driver for moving the image pickup device is used to move the setting. This helps reduce power consumption and costs.

In addition, as shown in FIG.
You may make it one-dimensional and move it. Further, similarly to the third embodiment, the adjustment timing may not be determined in advance as shown in FIG. 4 and may be adjusted at an arbitrary timing.

As described above, in this embodiment, as in the third embodiment,
Image display light detection means for detecting the image display light is provided, and
The display images of the two systems are compared, and based on that, one or both of the video signals and the amount of backlight light are automatically adjusted, so that the characteristics of the two transmission / display systems as a whole are matched. It's done automatically.

Next, a fifth embodiment of the present invention will be described.
The configuration of the fifth embodiment is similar to that of the third embodiment shown in FIG. The image display light detection means of the third embodiment is a two-dimensional image pickup device having the same size as the LCD panel, and generates the adjustment signal based on the image data of the entire screen.

On the other hand, in the present embodiment, as in the case of the fourth embodiment, not the entire screen but the signal of a part of the entire screen is detected, so that the entire image in the third embodiment is detected. Only part of the signals of the possible image sensor are read out and the image is adjusted based on the signals. The reading range of the image pickup device at that time is not shown in the drawing because the detection range is shown in the outer frame of the screen as shown in FIG. 10 or the detection range frame is displayed on the screen only when the setting is made. I set it by moving it with some other input operation member.

Since the size of the detection range is not limited in this embodiment, it is necessary to set the size at the same time. Therefore, instead of setting the center of the detection range as in the fourth embodiment,
The upper, lower, left and right boundaries of the detection range are set. Further, the shape of the detection range to be set is not limited to a square or a rectangle, and may be a circle or the like like spot metering of a camera.

As a method of setting the detection range by the setting means at that time, the detection center and the radius are set in the same manner as in the above example. If the adjustment time interval is long, the image data of the entire screen is read, the outline of the main subject is extracted, and data comparison and signal adjustment are performed within the range. As a result, the display is more consistent with the main subject.

Further, similarly to the third and fourth embodiments, the adjustment timing may not be determined in advance and the adjustment may be performed at an arbitrary timing. In that case, similarly, an adjustment timing generating means is provided as shown in FIG. 4 or 6, and a timing trigger signal to be adjusted by the operation of the PUSH switch or the like is input, and the signal causes the image display light detecting means 5 to output the maximum value. The adjustment signal is generated by calculating the minimum and average values and comparing the data. This is done once or several times.

As described above, in this embodiment, as in the third and fourth embodiments, the image display light detecting means for detecting the image display light is provided to compare the two systems of display images, particularly the main subject in this embodiment. Based on that, one or both video signals and the light quantity of the backlight are automatically adjusted, so that the characteristics of the two transmission / display systems as a whole are automatically matched, centering on the main subject. Is going.

[0060]

As described above, according to the present invention, by using two display systems for displaying images, for example, when observing a stereoscopic image or the like, the difference between the displayed image information itself is corrected. As described above, an image display capable of observing a good stereoscopic image by providing an adjustment signal generating means for generating an adjustment signal capable of adjusting the signal amplitude or the dark level value of one or both transmission / display systems A device can be achieved.

In particular, according to the present invention, the observer looks at the displayed images themselves of the two transmission / display systems, or the respective displayed images are detected by the image sensor or the like to correct the difference. By adjusting the signal amplitude, dark level value, etc. of one or both of the transmission / display systems as described above, the overall characteristics of the transmission / display systems of the two systems can be made to coincide with each other. In this case, there is an effect that the two image information can be fused together without any discomfort, the occurrence of flicker is suppressed, and the deterioration of resolution is not caused.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part of a first embodiment of the present invention.

FIG. 2 is a block diagram of a main part of a second embodiment of the present invention.

FIG. 3 is a block diagram of essential parts of Embodiments 3, 4, and 5 of the present invention.

FIG. 4 is a block diagram of essential parts when a part of the third, fourth and fifth embodiments of the present invention is improved.

FIG. 5 is a block diagram of essential parts when a part of the third embodiment of the present invention is modified.

FIG. 6 is a block diagram of essential parts when a part of the third embodiment of the present invention is modified.

FIG. 7 is an explanatory view of a part of Examples 3, 4, and 5 of the present invention.

FIG. 8 is an explanatory diagram of an image detection range according to Examples 4 and 5 of the present invention.

FIG. 9 is an explanatory diagram of a range of image detection according to the fourth embodiment of the present invention.

FIG. 10 is an explanatory diagram of a range of image detection according to the fifth embodiment of the present invention.

[Explanation of symbols]

 1-1, 1-2 image signal reproduction processing circuit 2-1, 2-2 driver control section 3-1, 3-2 LCD panel 4-1 and 4-2 backlight control section 5 image information backlight control means 6 Adjustment signal generating means 10 Adjustment timing generating means 11-1, 11-2 Computing means 12, 12-1, 12-2 Image display light detecting means 101, 102 Display system

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G09G 5/36 510 V 9471-5G H04N 13/04

Claims (17)

[Claims] 1. An image signal is subjected to electrical image processing by an image signal reproduction processing circuit to form a predetermined signal, and a scanning signal based on image information is created by a driver control unit from the signal from the image signal reproduction processing circuit. , Two display systems for displaying image information on the display means by using the scanning signal from the driver control section are provided, and the adjustment signal is inputted from at least one of the two display systems from the adjustment signal generating means. The image display device is characterized in that the image information displayed on the display means is adjusted. 2. The image display device according to claim 1, wherein the adjustment signal from the adjustment signal generating means adjusts an electric image signal such as an image signal amplitude and an offset value. 3. The adjustment signal generating means converts an externally input control signal into an adjustment signal and inputs the adjustment signal to the image signal reproduction processing circuit and a backlight control section for illuminating the display means, respectively. The image display device according to claim 1. 4. The image display device according to claim 1, wherein the adjustment signal generating means inputs adjustment signals having a constant relationship to each other to the two display systems. 5. The image display device according to claim 3, wherein the adjustment signal input to the backlight control unit is a signal relating to the adjustment of the light amount. 6. The image signal is subjected to electrical image processing by an image signal reproduction processing circuit to obtain a predetermined signal, and a scanning signal based on image information is created by a driver control unit from the signal from the image signal reproduction processing circuit. When displaying the image information on the display means by using the scanning signal from the driver control section, the image display light of the display means is detected by the image display light detecting means, and the image data from the image display light detecting means is obtained. Based on the display system, a predetermined calculation is carried out by a calculation means based on 2
A system is provided, and an adjustment signal is input from at least one of the display systems of the two systems based on signals from the computing means of the two display systems, and an image is displayed on the display means. An image display device characterized by adjusting information. 7. The image display device according to claim 6, wherein the adjustment signal from the adjustment signal generating means adjusts an electric image signal such as an image signal amplitude and an offset value. 8. The adjustment signal generating means converts a control signal input from the outside into an adjustment signal and inputs the adjustment signal to the image signal reproduction processing circuit and a backlight control section for illuminating the display means, respectively. The image display device according to claim 6, which is characterized in that: 9. The image display device according to claim 6, wherein the adjustment signal generating means inputs adjustment signals having a constant relationship to each other to the two display systems. 10. The image display device according to claim 6, wherein the adjustment signal input to the backlight control unit is a signal relating to the adjustment of the light amount. 11. Setting means for setting a detection area for detecting the image display light on the screen of the display means by the image display light detecting means, and moving the image display light detecting means to the position set by the setting means. 7. The image display device according to claim 6, further comprising: a moving unit that moves the image. 12. The image display device according to claim 11, wherein the setting unit sets a detection area based on an input operation member or an image signal. 13. The image display device according to claim 6, further comprising an adjustment timing generation unit capable of arbitrarily setting the timing of output of the adjustment signal output from the adjustment signal generation unit. 14. The image signal is subjected to electrical image processing by an image signal reproduction processing circuit to form a predetermined signal, and a scanning signal based on image information is created by a driver control unit from the signal from the image signal reproduction processing circuit. , Two display systems for displaying image information on the display means by using the scanning signal from the driver control section are provided, and the adjustment signal is inputted from at least one of the two display systems from the adjustment signal generating means. When adjusting the image information displayed on the display means,
The image display light of the two display means is mutually detected by one image display light detection means in a time division manner, and the display system includes a calculation means for performing a predetermined calculation based on the image data from the image display light detection means. An image display device having the adjusting signal generating means, wherein the adjusting signal generating means generates the adjusting signal based on a signal from the calculating means. 15. Setting means for setting a detection area for detecting the image display light on the screen of the display means by the image display light detecting means, and moving the image display light detecting means to the position set by the setting means. 15. The image display device according to claim 14, further comprising a moving unit that moves the image. 16. The image display device according to claim 15, wherein the setting unit sets the detection area based on an input operation member or an image signal. 17. The image display device according to claim 14, further comprising an adjustment timing generation unit capable of arbitrarily setting the timing of output of the adjustment signal output from the adjustment signal generation unit.