JPH03289797A - Three-dimensional display device - Google Patents

Abstract

PURPOSE:To reduce the occurrence of malaise, incongruity, and fatigue, etc., even when distance is expressed based on the parallax effect of eyes by providing a mechanism to vary the focal position of an eyepiece. CONSTITUTION:The eyes 1 observe the virtual image 4 of an image display panel 3 image-formed by the eyepiece 5. At this time, the feeling position of an image generated by the parallax effects of the eyes is located at a point A that is the intersection of the eyes. However, since the feeling position of the image generated by the focal point adjusting function of the eyes is located at a point B, difference between the points A and B generates the malaise. Therefore, it is possible to image-form the position of the virtual image 4 at the same position as that of a remarking point in the image being displayed on the image display panel 3 by employing the eyepiece 5 whose focal position can be varied by an actuator 6, etc. In such a way, the occurrence of the malaise, the incongruity, and the fatigue, etc., can be reduced.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a three-dimensional display device.

[Prior Art] A conventional three-dimensional display device focuses a virtual image on a monocular image display panel at a desired distance using an eyepiece, and allows the viewer to perceive perspective through the binocular parallax effect of the displayed pattern. There is a method.

[Problems to be Solved by the Invention] However, in the prior art, since the image formation position by the eyepiece is fixed, when expressing a perspective that is significantly different from the position based on the binocular parallax effect, the focus of the eye is A large difference occurred between the sense of perspective obtained from the accommodation effect and the sense of perspective obtained from the binocular parallax effect, and discomfort, discomfort, fatigue, etc. were likely to occur.

The present invention is intended to solve these problems, and its purpose is to reduce the disparity between the sense of perspective obtained from the focusing action of the eyes and the sense of perspective obtained from the binocular parallax effect, and to reduce the sense of discomfort and discomfort. The purpose of the present invention is to provide a three-dimensional display device with less pleasant feeling and less fatigue.

[Means for Solving the Problems] In order to solve the above problems, the three-dimensional display device of the present invention is characterized in that it is equipped with a mechanism for changing the focal position of the eyepiece. Embodiments of the invention will be described based on the drawings.

In FIG. 1, an eye 1 observes a virtual image 4 of an image display panel 3 formed by an eyepiece 2. As shown in FIG.

In the state shown in this figure, the perceptual position A of the image caused by the binocular parallax effect and the perceptual position B of the image resulting from the focusing action of the eyes match, and there is no problem.

However, in the conventional method, the position of the virtual image 4 formed by the eyepiece lens 2 is fixed, so when expressing a perspective that is significantly different from the above position based on the binocular parallax effect, the perspective obtained from the focusing action of the eyes cannot be expressed. There was a large difference between the sense of perspective and the sense of perspective obtained from the binocular parallax effect, and discomfort, discomfort, fatigue, etc. were likely to occur. FIG. 2 explains this.

In FIG. 2, the perceptual position of the image produced by the binocular parallax effect is at point A, which is the intersection of the lines of sight of both eyes.

However, since the perceptual position of the image resulting from the focusing action of the eye is at point B, this difference causes a sense of discomfort.

Therefore, by using an eyepiece whose focal position is variable, the position of the virtual image 4 is formed to be equal to the position of the gaze point in the image displayed on the image display panel 3, thereby reducing the occurrence of the above-mentioned discomfort. be able to.

The focal position variable mechanism of the eyepiece lens can be realized by moving the lens position using an actuator, as shown in FIG.

If the actuator is electronically controlled, a control signal can be extracted from the signal for driving the image panel and an all-electronically controlled device can be constructed.

Usually, the point of interest can be specified by the image producer by superimposing the part of the image that you want to observe with the most attention on the signal for driving the image panel, so that the signal can be picked up during playback. The virtual image forming position can be determined by inputting it to the focal position variable mechanism of the eyepiece lens.

In a moving image, the point of interest changes in real time, so a signal indicating the position of the point of interest is input to the focal position variable mechanism of the eyepiece for each frame of the moving image, and is synchronized with the display distance due to the binocular parallax effect. By changing the imaging position of the virtual image by the eyepiece lens, a natural three-dimensional display can be performed.

If the image formation position is corrected as described above, the magnification of the image formation and the field of view will change, but this problem can be solved by setting up a preliminary area outside the image display panel in advance to adjust the size of the display area externally. This can be solved by making it variable through control and at the same time applying magnification correction to the input image.

[Effects of the Invention] As explained above, the present invention has the effect of being able to reduce the occurrence of a sense of discomfort even when the sense of perspective is expressed based on the binocular parallax effect.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a three-dimensional display device according to the present invention, and FIG.
The figure is an explanatory diagram of the occurrence of a sense of discomfort during three-dimensional display, and FIG. 3 is an explanatory diagram of the eyepiece lens moving mechanism in the present invention. Eye eyepiece image display panel virtual image eyepiece actuator or more

Claims (1)

[Claims] A binocular-type three-dimensional display device having an image display panel and eyepieces for forming an image thereon, the three-dimensional display device comprising a mechanism for changing the focal position of the eyepieces.