JP2013105103A - Image display device and optical equipment including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin type image display device for displaying an image according to an observer's eyesight and to provide an optical equipment including the same.SOLUTION: An image display device comprises: a first and a second display elements 11, 13 for switching between a display state and a light transmission state; a refractive power variable element 12 which is disposed in the side of direction of emission from the second display element 13 and can be adjusted to at least two states which are a state in which its refractive power is approximately zero and a state in which it has a positive refractive power; a light source 14; and a control part 15 which controls the state of each display element and the state of the refractive power of the refractive power variable element 12. The control part 15 switches between: a first display state in which the refractive power of the refractive power variable element 12 is set to approximately zero, the second display element 13 is in the light transmission state, and the first display element 11 is made to display an image by guiding light emitted from the light source 14 to the first display element 11; and a second display state in which the refractive power of the refractive power variable element 12 is set to be positive, the first display element 11 is in the light transmission state, and the image displayed by the second display element 13 is enlarged and displayed.

Description

  The present invention relates to an image display device and an optical apparatus including the same.

Various image display devices have been proposed. For example, a device that displays an image using a plurality of liquid crystal display devices arranged so that the display areas overlap has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 4515722

Since the image display device is generally premised on the observation by the observer with the naked eye, the visual acuity of the observer can be cited as one factor that affects the visibility of the image. However, the focus adjustment power of the eye tends to decrease with age, and it is difficult for such an observer to focus when the distance between the image display device and the eye of the observer is always constant as in the past. There was a problem that the displayed content was difficult to see.

In order to solve the above problem, there is a method of displaying an image while assisting the visual acuity of the observer by arranging a loupe optical system between the image display device and the eye of the observer. However, this method has a problem that the size of the apparatus is increased and the eye point is limited depending on the size of the optical system.

The present invention has been made in view of such a problem, and provides an image display device capable of displaying an image according to the visual acuity of an observer and an optical apparatus including the image display device while being thin. With the goal.

In order to achieve such an object, an image display device according to the present invention includes first and second display elements that can switch between a display state and a light transmission state in a display region for displaying an image, and the first display element. A refractive power variable element which is provided on the emission side from the two display elements and can be adjusted to at least two states of a refractive power of approximately 0 and a positive refractive power, and light for each display element. And a control unit that controls the state of each display element and the state of refractive power of the variable refractive power element, and the control unit sets the refractive power of the variable refractive power element to substantially zero. The second display element is set in a light transmission state, the light emitted from the light source is guided to the first display element, and the first display element is set in a display state to display an image in a display area. The first display state and the bending of the refractive power variable element The force is set to a positive state, the first display element is set in a light transmission state, the light emitted from the light source is guided to the second display element, the second display element is set in a display state, A second display for enlarging and displaying the image displayed in the display area of the second display element;
The display state can be switched between. In this image display device, it is preferable that the light source, the second display element, the refractive power variable element, and the first display element are arranged in this order.

In addition, the image display device according to the present invention emits light by controlling a light emission amount for each pixel, and a first display element capable of switching between a display state and a light transmission state in a display region for displaying an image. When performing display and displaying an image, a second display element that emits light for each pixel corresponding to the display area to emit light and is provided on the emission side from the second display element. A refractive power variable element that can be adjusted to two states, a state where the force is substantially zero and a state having a positive refractive power, a light source that irradiates light to the first display element, A control unit that controls a state, a refractive power state of the refractive power variable element, and an on / off state of the light source, and the control unit is in a non-emission state of light in all pixels of the second display element To turn on the light source and enable the refractive power. First, the refractive power of the element is set to approximately zero, the light emitted from the light source is guided to the first display element, and the first display element is set to the display state to display an image in the display area. In the display state and in all pixels corresponding to the display area of the second display element, light is emitted to perform light emission display, the light source is turned off, and the refractive power of the refractive power variable element is set to a positive state. The first display element can be switched between a second display state in which the first display element is in a light transmission state and the light emission display of the second display element is enlarged. In this image display apparatus, it is desirable that the second display element, the light source, the refractive power variable element, and the first display element are arranged in this order.

In the image display device according to the present invention, it is desirable that the display area of the first display element is larger than the display area of the second display element.

In the image display device according to the present invention, it is desirable that the first and second display elements are liquid crystal elements.

In the image display device according to the present invention, it is preferable that the refractive power variable element is a liquid lens.

The image display device according to the present invention includes an operation unit (for example, a changeover switch SW in the embodiment) that receives a user operation input in order to switch between the first display state and the second display state. The control unit, in response to an operation input received by the operation unit,
It is desirable to switch the display state.

In the image display device according to the present invention, the image display device includes a detection unit that detects a vibration amount or a tilt amount of the image display device, and the control unit detects the vibration amount or the tilt amount of the image display device detected by the detection unit. It is desirable to switch the display state according to the above.

An optical apparatus according to the present invention (for example, the camera CAM in the embodiment) includes any one of the image display devices.

ADVANTAGE OF THE INVENTION According to this invention, although it is thin, an image display apparatus which can perform an image display according to an observer's visual acuity, and an optical apparatus provided with the same can be provided.

It is the schematic of the image display apparatus which concerns on 1st Example, and has shown the 1st display state which displays an image using the 1st display element of this side seeing from an observer. It is the schematic of the image display apparatus which concerns on 1st Example, and has shown the 2nd display state which displays an image using the 2nd display element of a back side seeing from an observer. It is a figure explaining the positional relationship of the display area of a 1st display element, and the display area of a 2nd display element in the image display apparatus which concerns on 1st Example. It is the schematic of the image display apparatus which concerns on 2nd Example, and has shown the 1st display state which displays an image using the 1st display element of this side seeing from an observer. It is the schematic of the image display apparatus which concerns on 2nd Example, and has shown the 2nd display state which displays an image using the 2nd display element of a back side seeing from an observer. It is a figure explaining the positional relationship of the display area of a 1st display element, and the display area of a 2nd display element in the image display apparatus which concerns on 2nd Example. It is a figure explaining a camera (optical apparatus) provided with the image display apparatus which concerns on this embodiment, (a) is a front view, (b) is a rear view.

  Hereinafter, embodiments will be described with reference to the drawings.

(First embodiment)
The image display apparatus according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the image display apparatus 10 according to the first embodiment includes a first display element 11 and a refractive power variable element 1.
2, the second display element 13, the light source 14, the control unit 15, and the changeover switch SW (SW 1).
And is configured.

The first display element 11 is a so-called transmissive image display element, which modulates the light emitted from the light source 14 to display a two-dimensional image in the display area, and also displays the display state in the display area for displaying this image. And a light transmission state can be switched. In this embodiment, a display element such as a liquid crystal panel is suitable.

The refractive power variable element 12 is disposed on the emission side (between the first display element 11 and the second display element 13 in this embodiment) from the second display element 13 and is adjusted by adjusting pressure, voltage, and the like. The surface shape is changed, and the refractive power shown in FIG. 1 is substantially zero (functioning as a transparent parallel plate) and FIG.
It is an element which can be adjusted to two states, the state which has positive refractive power shown in (state which functions as a convex lens). In this embodiment (for example, effective diameter of about φ10 mm, focal length of about 1
A liquid lens (0-20 mm) is suitable.

Similar to the first display element 11, the second display element 13 is a transmissive image display element.
The light emitted from the light source 14 is modulated to display a two-dimensional image in the display area, and the display state and the light transmission state can be switched in the display area for displaying the image. In this embodiment, a display element such as a liquid crystal panel is suitable.

In the present embodiment, as shown in FIG. 3, the first display element 11 and the second display element 13 are arranged so that the center portions of the display areas overlap each other. However, the display area is larger in the first display element 11 than in the second display element 13.

The light source 14 is disposed on the back side of the second display element 13, and the first and second display elements 11,
This is a self-luminous surface light source (backlight) that irradiates each display area with visible light. In the present embodiment, according to the size and position of the display areas of the first and second display elements 11 and 13, the light source 14 has a light emitting surface having a plurality of light emitting areas (the entire surface corresponding to the first display element 11 and , And is divided into a region 14a) in the center of the light emitting surface corresponding to the second display element 12. These light emitting areas can be turned on and off independently. In this embodiment, as the light source 14,
A plurality of light emitting elements such as LEDs are two-dimensionally arranged in a plane, a transparent parallel plate-shaped light guide plate and a plurality of light emitting elements such as LEDs arranged so as to surround the periphery thereof It is desirable to use a self-luminous type such as an EL (Electro Luminescence).

In the image display apparatus 10 according to the first embodiment, the eye point E.E. A first display element 11, a refractive power variable element 12, a second display element 13, and a light source 14 are arranged in this order from the P (that is, observer) side.

The control unit 15 controls the state of the first and second display elements 11 and 13 and the state of refractive power of the refractive power variable element 12. Specifically, the light irradiated from the light source 14 with the refractive power of the variable refractive power element 12 in a substantially zero state (a state that functions as a transparent parallel plate) and the second display element 13 in a light transmitting state. Is transmitted through the second display element 13 and the refractive power variable element 12, guided to the first display element 11, and the first display element 11 is in a display state to display an image in the display area.
The display state (see FIG. 1) and the refractive power of the variable refractive power element 12 are set to a positive state (a state that functions as a converging lens), the first display element 11 is set in a light transmission state, and the light source 14 emits light. The reflected light is guided to the second display element 13, the second display element 13 is set in the display state, an image is displayed in the display area, and further, the refractive power variable element 12 and the first display element 11 are transmitted, Control is performed to switch between the second display state (see FIG. 2) in which the image displayed in the display area of the display element 13 is enlarged.

In this embodiment, the switching between the first display state and the second display state is performed by the image display device 1.
This is performed by the observer operating the change-over switch SW1 provided at 0.

Moreover, the control part 15 controls lighting and extinction of the light source 14 according to operation of changeover switch SW1. Specifically, as shown in FIG. 1, the control unit 15 responds to illuminate the display area of the first display element 11 when performing image display using the first display element 11. The light source 14 is controlled so that the illumination light is emitted from the area to be emitted, that is, the entire light emitting surface. Also,
As shown in FIG. 2, when performing image display using the second display element 13, the control unit 15 is configured to illuminate only the display area of the second display element 13. The light source 14 is controlled so that the illumination light is emitted only from the corresponding area 14a in the center and is turned off in the other areas.

  Next, the operation of the image display device 10 will be described.

In the image display device 10, a first display state (see FIG. 1) in which an image is displayed on the first display element 11 on the front side of the observer, and an image is displayed on the second display element 13 on the back side. Second to let
The display state (see FIG. 2) is selectively switched according to the operation of the selector switch SW1.

When the changeover switch SW1 is operated by the observer and the first display state shown in FIG. 1 is selected, the control unit 15 sets the refractive power of the refractive power variable element 12 to 0 (functions as a transparent parallel plate state). The first display element 11 is set to the display state, the second display element 13 is set to the light transmission state, and the size of the light emitting area of the light source 14 is set to the size of the display area of the first display element 11. The corresponding entire surface.

Then, the illumination light emitted from the entire surface of the light emitting area of the light source 14 is transmitted through the second display element 13 and the refractive power variable element 12 in order, and irradiates the display area of the first display element 11 from the back surface. The first display element 11 modulates the illumination light when the illumination light is transmitted, so that 2
Display a dimensional image. The light transmitted through the first display element 11 is the eye point E.E. Reach the observer's eye at P.

Thereby, the observer can observe the two-dimensional image displayed on the display area of the first display element 11 on the near side.

When the change-over switch SW1 is operated by the observer and the second display state shown in FIG. 2 is selected, the control unit 15 sets the refractive power of the refractive power variable element 12 to a positive state (functions as a converging lens). State), the first display element 11 is set in the light transmission state, the second display element 13 is set in the display state, and the size of the light emitting area of the light source 14 corresponds to the size of the display area of the second display element 13. Let it be the center region 14a.

Then, the light irradiated from the center area | region 14a of the light source 14 irradiates the display area of the 2nd display element 13 from a back surface. The second display element 13 displays a two-dimensional image in the display area by modulating the illumination light when the illumination light is transmitted. The illumination light transmitted through the second display element 13 is transmitted through the refractive power variable element 12 to be converged, transmitted through the first display element 11, and the eye point E.E. Reach the observer's eye at P. At this time, the first display element 11 does not display an image but only transmits illumination light.

Thereby, the observer can observe the two-dimensional image displayed on the display area of the second display element 13 on the back side. Since the illumination light reaching the observer's eyes is converged by the refractive power variable element 12, the display position of the image is more visible to the observer than when the first display element 11 is used. It is visually recognized as being in the distance.

As described above, in the image display apparatus 10 according to the present embodiment, the display position of the image can be switched (between the front side and the back side from the observer), so that selection according to the visual acuity of the observer is possible. Became.

Further, in order to show the viewer that the image display position is far away, in the conventional apparatus, the eye point E.D. Although a lens was disposed on the P side, the device tended to increase in the thickness direction. However, the image display apparatus 10 according to the present embodiment is
By disposing the lens between the first and second display elements 11 and 13 and using the refractive power variable element 12 as a lens, the refractive power variable element 12 can have a refractive power of 0 when not in use. Therefore, the refractive power variable element 12 can be disposed in the vicinity of the image display element 11 and can be made thinner than the conventional image display apparatus.

In the first embodiment, the light source 14 can be a self-luminous image display element. The self-luminous image display element has both the illumination function of the light source 14 and the image display function of the second display element 13, and performs light emission display by controlling the light emission amount for each pixel. When an image is displayed, light is emitted for each pixel corresponding to the display area to enter a light emitting display state. FIG.
In the first display state shown in FIG. 2, only the illumination function is activated to emit white light, and in the second display state shown in FIG. 2, the image display function is activated. By adopting an element having the function of the light source 14 and the function of the second display element 13 in this way, the second display element 13 is omitted and the distance between the light source 14 and the refractive power variable element 12 is increased. When changing from the display state of FIG. 1 to the display state of FIG. 2, the amount of change in refractive power of the refractive power variable element 12 can be reduced, and the time required for the element 12 to change can be shortened.

(Second embodiment)
An image display apparatus according to the second embodiment will be described with reference to FIGS. The difference between the present embodiment and the first embodiment is that the second display element on the back side of the observer is arranged on the back side of the light source (not on the front side). Therefore, in this embodiment, it is desirable that the light source 24 has a configuration in which a plurality of light emitting elements such as LEDs are arranged so as to surround the transparent parallel plate-shaped light guide plate.

As shown in FIG. 4, the image display apparatus 20 according to the second embodiment includes a first display element 21, a refractive power variable element 22, a second display element 23, a light source 24, a control unit 25, and the like. The switch SW (SW2) is provided.

The first display element 21 is a so-called transmissive image display element, which modulates the light emitted from the light source 24 to display a two-dimensional image in the display area, and in the display area for displaying this image, the display state. And a light transmission state can be switched. In this embodiment, a display element such as a liquid crystal panel is suitable.

The refractive power variable element 22 is arranged on the emission side (between the first display element 21 and the light source 24 in the present embodiment) from the second display element 23, and the surface shape is changed by adjusting the pressure, voltage, or the like. 4 and adjusted to two states, a state where the refractive power shown in FIG. 4 is substantially zero (state that functions as a transparent parallel plate) and a state that has positive refractive power shown in FIG. 5 (a state that functions as a convex lens). It is an element that can be used. In this embodiment (for example, effective diameter of about φ10 mm, focal length of about 10 to 20 mm
A liquid lens is suitable.

The second display element 23 is a self-luminous image display element that performs light emission display by controlling the amount of light emitted for each pixel. When displaying an image, the second display element 23 emits light for each pixel corresponding to the display area. Ejection is brought into the light emission display state. Note that the size of the display area is the first display element 2 as shown in FIG.
1 is larger than the second display element 23.

The light source 24 is a surface light source (backlight) that is disposed on the display surface side of the second display element 23 and irradiates the display area of the first display element 21 with visible light. In this embodiment, as described above,
The light source 24 includes a transparent parallel plate-shaped light guide plate and an LED arranged so as to surround the periphery thereof.
Etc., and a plurality of light emitting elements. However, it is not limited to this.

In the image display device 20 according to the second embodiment, the eye point E.E. A first display element 21, a refractive power variable element 22, a light source 24, and a second display element 23 are arranged in this order from the P (that is, observer) side.

The control unit 25 controls the display states of the first and second display elements 21 and 23, the refractive power state of the refractive power variable element 22, and on / off of the light source 24. Specifically, all the pixels of the second display element 23 are set in a non-emission (that is, extinguished) state, the light source 24 is turned on, and the refractive power variable element 22 is turned on.
The light irradiated from the light source 24 is transmitted through the refractive power variable element 22 and guided to the first display element 21 so that the first display element 21 The first display state (see FIG. 4) in which an image is displayed in the display area with the display element 21 in the display state, and light is emitted in all pixels corresponding to the display area of the second display element 23 in an emission state. Display is performed, the light source 24 is turned off (functioning as a transparent parallel plate), and the refractive power variable element 2
2 is set in a positive state (functioning as a converging lens), the first display element 21 is set in a light transmitting state, the second display element 23 is caused to emit light, and an image is displayed in the display area. The second display state in which the light emitted from the element 23 is transmitted through the light source 24, the refractive power variable element 22 and the first display element 21 in order, and the light emission display of the second display element 23 is enlarged and displayed. (See FIG. 5).

In this embodiment, the switching between the first display state and the second display state is performed by the image display device 2.
This is done by the observer operating the change-over switch SW2 provided at 0.

  Next, the operation of the image display device 20 will be described.

In the image display device 20, as in the first embodiment, the first display element 2 on the near side of the observer is used.
The first display state (see FIG. 4) in which an image is displayed on the first display state and the second display state (see FIG. 5) in which an image is displayed on the second display element 23 on the back side are displayed on the selector switch SW2. Depending on the operation, it can be switched selectively.

When the changeover switch SW2 is operated by the observer and the first display state shown in FIG. 4 is selected, the control unit 25 makes the light non-emission state in all the pixels of the second display element 23, and the light source 2
4 is turned on, the refractive power of the refractive power variable element 22 is set to a substantially zero state (state that functions as a transparent parallel plate), and the first display element 21 is set to the display state.

Then, the illumination light emitted from the light source 24 passes through the refractive power variable element 22 and irradiates the display area of the first display element 21 from the back surface. The first display element 21 displays a two-dimensional image in the display region by modulating the illumination light when the illumination light is transmitted. First display element 21
The light transmitted through eye point E.E. Reach the observer's eye at P.

Thereby, the observer can observe the two-dimensional image displayed on the display area of the first display element 21 on the near side.

When the change-over switch SW2 is operated by the observer and the second display state shown in FIG. 5 is selected, the control unit 25 emits light in all the pixels corresponding to the display area of the second display element 23. In this state, light emission display is performed, the light source 24 is turned off (a state that functions as a transparent parallel plate), the refractive power of the refractive power variable element 22 is set in a positive state (a state that functions as a converging lens), and the first The display element 21 is brought into a light transmission state.

Then, the second display element 23 emits light to display an image in the display area, and light emitted from the display area of the element 23 passes through the light source 24 and passes through the refractive power variable element 22 to converge. Is transmitted through the first display element 21 and the eye point E.E. Reach the observer's eye at P.

Thereby, the observer can observe the two-dimensional image displayed on the display area of the second display element 23 on the back side. And since it is comprised so that the light from the 2nd display element 23 which reaches | attains an observer's eyes by the refractive power variable element 22 may be converged, the display position of an image is 1st display to an observer. It is visually recognized as being farther than when the element 21 is used.

Thus, in the image display apparatus 20 according to the present embodiment, the display position of the image can be switched (between the front side and the back side from the observer), so that selection according to the visual acuity of the observer is possible. It is.

In the first embodiment, as shown in FIG. 2, the transmissive second display element 13 and the refractive power variable element 12 are arranged adjacent to each other, but in the second embodiment, as shown in FIG. The light source 24
Is turned off to function as a transparent parallel plate, and is arranged between the self-luminous second display element 23 and the refractive power variable element 22. By adopting such an arrangement, the distance between the second display element 23 and the refractive power variable element 22 can be increased. As a result, when changing from the state shown in FIG. 4 to the state shown in FIG. 5, the amount of change in refractive power of the refractive power variable element 22 can be reduced, and the time required for the element 22 to change can be shortened. Further, since it is not necessary to increase the refractive power excessively in the refractive power variable element 22, the amount of generated aberration is reduced, and it is easy to obtain a good observation image.

In the second embodiment as described above, as shown in FIG. 6, the second display element 23 is arranged asymmetrically with respect to the first display element 21 (shifting the position of the center of each display area). It is desirable to do. As is clear from FIG. 4, the thickness of the image display device 20 increases as the distance between the second display element 23 and the refractive power variable element 22 increases. However, as in the present embodiment, the first and second display elements 23 are positioned in the upper right part with respect to the first display element 21.
The display elements 21 and 23 are arranged asymmetrically, and the portion where the thickness is increased is limited to a specific position (in this case, the upper right part), thereby increasing the degree of freedom in arranging the constituent members of the image display device 20. Can be expected. In this way, it is possible to achieve further thinning of the device by utilizing the positional relationship between the first display element 21 and the second display element 23.

The image display apparatuses 10 and 20 according to the above-described embodiments can be applied to various optical devices. For example, it is suitable for the display device M provided on the back surface of the camera CAM shown in FIGS.

In the above-described embodiment, the switching between the first and second display states is performed using the changeover switch SW (
Although it is performed according to the operation of SW1, SW2), it is not limited to this. For example, it has a detection unit (not shown) that detects the vibration amount or tilt amount of the image display device, and the control unit automatically depends on the vibration amount or tilt amount of the image display device detected by the detection unit, You may comprise so that a 1st and 2nd display state can be switched.

Up to this point, in order to make the present invention easier to understand, the configuration requirements of the embodiment have been described.
It goes without saying that the present invention is not limited to this.

DESCRIPTION OF SYMBOLS 10,20 Image display apparatus 11,21 1st display element 12,22 Refracting power variable element 13,23 2nd display element 14,24 Light source 15,25 Control part SW (SW1, SW2) Changeover switch (operation part)
E. P eye point CAM camera (optical equipment)

Claims (10)

First and second display elements capable of switching between a display state and a light transmission state in a display region for displaying an image;
A refractive power variable element which is provided on the exit side from the second display element and can be adjusted to at least two states of a refractive power of approximately 0 and a positive refractive power;
A light source for irradiating each display element with light;
A control unit for controlling the state of each display element and the state of refractive power of the refractive power variable element;
The controller is
The refractive power of the refractive power variable element is set to a substantially zero state, the second display element is set in a light transmitting state, light emitted from the light source is guided to the first display element, and the first display A first display state in which an element is displayed and an image is displayed in a display area;
The refractive power of the refractive power variable element is set in a positive state, the first display element is set in a light transmitting state, light emitted from the light source is guided to the second display element, and the second display element The image display device can be switched between a display state and a second display state in which the image displayed in the display area of the second display element is enlarged and displayed. A first display element capable of switching between a display state and a light transmission state in a display area for displaying an image;
A second display element that performs light emission display by controlling the light emission amount for each pixel, and emits light for each pixel corresponding to the display area to display a light emission display state when displaying an image;
A refractive power variable element which is provided on the exit side from the second display element and can be adjusted to at least two states of a refractive power of approximately 0 and a positive refractive power;
A light source for irradiating light to the first display element;
A control unit that controls the state of each display element, the refractive power state of the refractive power variable element, and the on / off state of the light source;
The controller is
Light is not emitted in all pixels of the second display element, the light source is turned on,
With the refractive power of the variable refractive power element in a substantially zero state, the light emitted from the light source is the first light.
A first display state in which the first display element is displayed and an image is displayed in a display area.
In all pixels corresponding to the display area of the second display element, light is emitted to perform light emission display, the light source is turned off, the refractive power of the refractive power variable element is set to a positive state, and the first The display device can be switched between a second display state in which the display element is set in a light transmission state and the light emission display of the second display element is enlarged. The image display apparatus according to claim 1, wherein the light source, the second display element, the refractive power variable element, and the first display element are arranged in this order. The image display apparatus according to claim 2, wherein the second display element, the light source, the refractive power variable element, and the first display element are arranged in this order. 5. The image display device according to claim 1, wherein the display area of the first display element is larger than the display area of the second display element. The image display apparatus according to claim 1, wherein the first and second display elements are liquid crystal elements. The image display apparatus according to claim 1, wherein the refractive power variable element is a liquid lens. In order to switch between the first display state and the second display state, an operation unit that receives a user operation input is provided.
The image display apparatus according to claim 1, wherein the control unit switches the display state in accordance with an operation input received by the operation unit. A detection unit that detects a vibration amount or a tilt amount of the image display device;
The image according to claim 1, wherein the control unit switches the display state according to a vibration amount or an inclination amount of the image display device detected by the detection unit. Display device. An optical apparatus comprising the image display device according to claim 1.

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