JPH03292093A - Three-dimensional display device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

Some conventional three-dimensional display devices use a method in which a virtual image on a monocular image display panel is focused at a desired distance using an eyepiece, and a sense of perspective is perceived by the binocular parallax effect of the displayed pattern. .

[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 occurs between the sense of perspective obtained from the accommodation effect and the sense of perspective obtained from the binocular parallax effect, which tends to cause discomfort, discomfort, fatigue, etc.

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. The purpose of the present invention is to provide a three-dimensional display device with less pleasant feeling and less fatigue.

[Prior Art] [Means for Solving the yL Problem] In order to solve the above problems, the three-dimensional display device of the present invention includes a mechanism for detecting a user's gaze point in a displayed image, and a mechanism for detecting a gaze point in a displayed image of a user. The present invention is characterized in that it includes a mechanism for matching the display position in the depth direction due to binocular parallax of viewpoints with the image formation position in the depth direction of the image display panel formed by the eyepiece.

[Example code] Embodiments of the present invention will be described below 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.

The eye tracker 7 detects the gaze point on the screen based on the position of the user's eyes. The processing device 8 compares the detected gaze point position with three-dimensional image data and determines depth information (hereinafter referred to as depth) at that point. Since the separation width of the left and right images for practical use of binocular parallax and the position to be imaged by the eyepiece can be calculated using the depth, the signal generation circuit 9 generates separate image signals for the left eye and right eye and the eyepiece drive signal accordingly. create.

In the conventional system, as shown in FIG. 2, the position of the virtual image 4 formed by the eyepiece 2 is fixed, and the perceptual position of the image resulting from the focusing action of the eye is at point B.

However, since 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, this difference has caused an unnatural feeling.

In order to eliminate this sense of discomfort, it is sufficient to match the perceptual position A of the image caused by the binocular parallax effect with the perceptual position B of the image resulting from the focusing action of the eyes.

Therefore, as described above, 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 using the eyepiece lens whose focal position is variable with respect to the user's gaze point. By doing so, it is possible to reduce the occurrence of discomfort that occurs in the conventional case.

The focal position variable mechanism of the eyepiece can be realized by moving the lens position using an actuator.

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 order to adjust the size of the display area. This can be solved by making it variable and simultaneously 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 drawings]

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 generation of discomfort during conventional three-dimensional display. Eyepiece actuator eye tracker processing device signal generation circuit or more

Claims (1)

[Claims] In a binocular-type three-dimensional display device that has an image display panel and eyepieces that form an image, there is a mechanism for detecting a user's gaze point in a displayed image, and a depth direction based on the binocular parallax of the detected gaze point. A three-dimensional display device comprising a mechanism for matching the display position of the image display panel with the image formation position in the depth direction of the image display panel formed by the eyepiece.