JPS63305323A - Stereoscopic display device - Google Patents

Abstract

PURPOSE:To obtain a stereoscopic image of high quality without generating a flickering phenomenon by separating the polarizing direction of information alternately displayed on a display device by shifting its position by a polarizing plate array and allowing polarizing glasses to recognize the separated polarizing directions as a stereoscopic image. CONSTITUTION:Left eye information and right eye information are displayed on the display face of a CRT so as to be alternately shifted right and left and in each scanning line. At the time of transmitting these display beams through the polarizing plate array 20, left eye information is transmitted through the polarizing plates 11, 13 of the array 20 and their polarizing axes or light absorbing axes 11A, 13A coincide with the polarizing axis or a light absorbing axis 21A of the left polarizing plate and can be recognized by the left eye. Right information is transmitted through polarizing plates 12, 14 on the array 20 and its polarizing axes or light absorbing axes 12A, 14A are made to coincide with the polarizing axis or light absorbing axis 22A of the right polarizing plate of the glasses 30 and can be recognized by the right eye. Consequently, a stereoscopic image generating no flickering phenomenon can be recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a stereoscopic display device that displays stereoscopic images.

[Conventional technology]

Conventionally, as this type of 3D display device, CRT
A VHD system has been put into practical use in which left-eye and right-eye images are alternately switched and displayed on a cathode-ray tube (Cathode-Ray-Tuba), and three-dimensional visualization is achieved using synchronized shutter glasses.

[Problem that the invention seeks to solve]

However, the three-dimensional display device configured in this manner has problems in that the overall structure of the device is large, lacks portability, and eyestrain is likely to occur due to flicker phenomenon accompanying image switching.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a three-dimensional display device that can obtain high-quality three-dimensional images without causing the flicker phenomenon. Another object of the invention is to
An object of the present invention is to provide a three-dimensional display device with excellent portability.

[Means for solving problems]

A stereoscopic display device according to the present invention includes a display device that alternately displays information at shifted positions, and a plurality of polarizing plates arranged in front of the display device with alternately different polarization axes or light absorption axes. The device includes a polarizing plate array and polarized glasses having a pair of polarizing plates arranged outside the polarizing plate array.

[Effect]

In the present invention, information that is alternately displayed at shifted positions on a display device is separated in polarization direction by a polarizing plate array, and is displayed as a three-dimensional image by polarizing glasses. ! ! be recognized.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view of essential parts showing an embodiment of a three-dimensional display device according to the present invention. In the figure, a phosphor film 2 is formed on the inner surface of a panel glass 1 in front of the observer's eyes, and a shadow mask 3 is disposed facing the phosphor film 2 to display information in a pattern. A cathode ray tube 10 is provided. In addition, on the front surface of the cathode ray tube 10, there are four sets of polarizing plates 11, 12 in the form of stripes whose polarization axes or light absorption axes intersect each other at approximately 90 degrees, corresponding to the scanning lines of the cathode ray tube 10. , 13, 14 are arranged opposite to each other. Further, on the outer surface of the polarizing plate play 20, in front of the observer's eyes, the polarization axis or light absorption axis on the left eye side and the right eye side is approximately 90 degrees from each other.
Polarized glasses 30 having a left polarizing plate 21 and a right polarizing plate 22 crossed at the same time are provided.

FIG. 2 is a diagram illustrating the polarization directions of the polarization axes or light absorption axes of the polarizing plate array 20 and polarized glasses 30 of the three-dimensional display device described in FIG. 1. In the same figure, 1
1A, 12A, 13A, and 14A are the polarization axes or optical absorption axes of the respective polarizing plates 11, 12, 13, and 14 constituting the polarizing plate array 20, and these respective polarizing axes or optical absorption axes 11
A, 12A, 13A.

14A are formed so as to cross each other at approximately 90 degrees. 21A and 22A are the polarization axes or light absorption axes of the respective polarizing plates 21 and 22 constituting the polarized glasses 30, and these are the respective polarization axes or light absorption axes 21A.

22A are formed to cross each other at #f90 degrees.

The operation will be explained in detail below with reference to FIG. First, as shown in FIG. 3-), left-eye information AL and right-eye information AR are displayed on the display surface of the cathode ray tube 10, being shifted left and right alternately for each scanning line. and,
These display lights are transmitted through the polarizing plate array 20 shown in FIG.
In this case, the information AL for the left eye is transmitted through the polarizing plate 11.13 of the polarizing plate array 20, and has a polarization axis or a light absorption axis represented by the direction 41A as shown in FIG. This light coincides with the polarization axis of the left polarizing plate or the light absorption axis 21A of the polarized glasses 30, and is recognized by the left eye.

Therefore, the information AL for the left eye is the polarized glasses 30 for the right eye.
Since it intersects the polarization axis or light absorption axis 22A of the right polarizing plate at approximately 90 degrees, the right eye is not subjected to uR. Likewise, the information AR for the right eye shown in FIG. Since the light has an axis, it coincides with the polarization axis of the right polarizing plate or the light absorption axis 22A of the polarized glasses 30, and is perceived by the right eye.

According to such a configuration, the information AI for the left eye and the information AR for the right eye, which are displayed on the cathode ray tube 10 horizontally and shifted for each scanning line, are aligned with each other on the polarization axis or the light absorption axis 1.
1A, 12A, 13A, and 14A are different polarizing plates 11,
12, 13, and 14, and the polarization axes or light absorption axes 21A, 22A are recognized as a three-dimensional image by polarizing glasses 30 having different polarization axes or light absorption axes 21A, 22A.

In addition, in the above-mentioned embodiment, a case was explained in which a cathode ray tube was used as a display device for displaying information.
The present invention is not limited to EL, PDP.
It goes without saying that the same effect as described above can be obtained even if a display device made of , VFD, LED, or the like is used.

〔Effect of the invention〕

As described above, according to the present invention, the information for the left eye and the information for the right eye are displayed on the display device in shifted positions, and the information is separated by each polarizing plate of the polarizing plate play, and the information is displayed on the left eye with polarized glasses. By having the information for the left eye recognized by the left eye and the information for the right eye by the right eye, it is possible to MR a three-dimensional image without flickering. In addition, polarized glasses only have a pair of polarizing plates whose polarizing axes or light absorption axes cross each other, and can be used cordless, making them highly portable.Furthermore, each polarizing plate in the polarizing plate array separates information. However, since the structure was configured so that individual information could be obtained for the left and right eyes using polarized glasses, it was possible to obtain extremely superior stereoscopic images with a simple configuration of simply arranging a polarizing plate array on the display device. have an effect.

[Brief explanation of drawings]

FIG. 1 is a sectional view of essential parts showing a three-dimensional display device according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating the polarizing axis or light absorption axis of the polarizing plate array and polarized glasses shown in FIG. 3(a) + (b) + (C) are diagrams explaining the operation of the stereoscopic display device according to the present invention. 1... Panel glass 12... Fluorescent film \3...
...Shadow mask, 10...ψ cathode ray tube, 11,1
2, 13, 14...-Polarizing plate, 11A. 12A, 13A, 14A...O polarization axis or light absorption axis, 20...polarizing plate array, 21-...e right polarizing plate,
22... Right polarizing plate, 21A, 22A... Polarizing axis or light absorption axis, 30I... Polarized glasses.

Claims (1)

[Claims] A display device that alternately displays information at shifted positions; a polarizing plate array formed by arranging a plurality of polarizing plates with alternating polarization axes or light absorption axes arranged in front of this display device; and this polarizing plate. A stereoscopic display device comprising: polarized glasses having a pair of polarizing plates arranged outside the array.