JPH0416092A - 3D image 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 [Field of Industrial Application] The present invention relates to a lenticular one-type three-dimensional image display device.

[Summary of the Invention] This invention is a lenticular one-type three-dimensional image display device using a display device such as a liquid crystal, EL, fluorescent display tube, or plasma display. This allows only a three-dimensional image of the lobe to be observed.

[Prior Art] One of the three-dimensional television image display systems that do not require glasses is the lenticular system. This twin-lens 3D television or multi-lens 3D television system has mainly been realized using cathode ray tube displays or CRT projection displays, but recently it has been realized using liquid crystal, EL, and plasma displays. A device using a flat panel display such as a sprayer is expected to be a promising means.

[Problems to be Solved by the Invention] In general, in a lenticular one-type stereoscopic or three-dimensional image display device, as shown in FIGS. In addition to the lobe, several secondary lobes occur. Although this secondary lobe can be used as a visual area for stereoscopic viewing, when the viewer moves his or her head, inverted stereopsis may occur when moving from the main lobe to the secondary lobe, or a disappeared image may reappear, making it difficult to see the stereoscopic image. It becomes more unnatural. In addition, the chromatic aberration caused by the lenticular lens was larger in the side lobe than in the main lobe, so there were gaps in the image quality, such as deterioration.

SUMMARY OF THE INVENTION An object of the present invention is to provide a three-dimensional image display device in which side lobes generated by lenticular lenses are removed, in order to eliminate such unnatural stereoscopic images.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a display means, a lenticular lens disposed in front of the display means, and a sublobe having a light shielding effect on light transmitted through the lenticular lens. It is characterized by comprising a removing means.

[Operations] According to the present invention, with the above configuration, the side lobes are removed and only the main lobe image with good image quality is displayed.

[Example] Next, a first example of the present invention will be described below with reference to the drawings.

FIG. 1 shows the principle of a method for removing side lobes generated in lenticular lenses in a twin-lens lenticular stereoscopic image display device.

In FIG. 1, the length S (0≦S≦
Insert the black stripe 2 of T, T: length of the lens into the lens 1. 3 is a three-dimensional image display surface provided at the base of the lenticular lens 1; 4 constitutes the display surface 3; a pair of left and right light emitting pixels are arranged for each pitch of the lenticular lens 1;

As a result, as shown in FIG. 1, the light emitted from each light emitting pixel at the base of the lenticular lens 1 does not pass through each adjacent minute convex lens portion of the lens 1, and the generation of side lobes can be prevented. Similarly, the multi-lens type 3
The above principle can also be applied to dimensional image display devices.

FIG. 3 shows a second embodiment of the invention.

In FIG. 3, numeral 5 is a stereoscopic image display surface consisting of a large number of pairs of left and right light-emitting elements, and 6 is a lenticular lens arranged on the display surface 5 so that each minute convex lens portion corresponds to a pair of left and right light-emitting pixels. This constitutes a three-dimensional or three-dimensional image display device.

In front of this lenticular lens 6, a film structure 11 for limiting the visual field is arranged. This film structure 11
For example, the front and back surfaces of a silicone rubber matrix 9 in which fine, different-colored silicone rubber strips 8 that block light are arranged parallel to each other on the optical axis at intervals shorter than the pitch of the lenses 6 in a highly transparent silicone rubber 7 are made of two sheets. This can be achieved by sandwiching it between polycarbonate films 10.

The viewing angle of this film structure 11 can be designed, for example, as shown in FIG. 4. In addition, by tilting the internal different-colored silicone rubber strip 8 from the optical axis 12, the maximum light transmission angle α is changed downward from the center (optical axis), as shown in FIGS. 5(A) and 5(B). be able to. By attaching such a film structure, the side lobes of the lenticular lens can be removed, leaving only the main lobe.

FIG. 6 shows an example of the configuration of a lenticular one-type stereoscopic image display device in which a stereoscopic viewing zone limiting filter 13 made of a film structure as described above for limiting the viewing zone is attached to the front of a lenticular lens 14. (15 is a stereoscopic image display surface, 23 is an optical system consisting of each component of 16, 17 degrees, 19, and 22, which will be described later).The side lobe has been removed, allowing three people to observe the image of only the main lobe at the same time. It is something. That is, the first and second half mirrors 16 and 17 are arranged in front of the filter 13 at an angle with respect to the optical axis, and the leftmost observer 18 receives the light reflected by the first half mirror 16 and the first half mirror 17. The image reflected by the reflecting mirror 19 (indicated by A) is
The observer 20 inside sees the image (indicated by B) transmitted through the first and second half mirrors 16o and 17, and the observer 21 on the far left sees the image transmitted through the first half mirror 16 and the second half mirror 16. The image reflected by the half mirror 17 and the second reflecting mirror 22 (
(indicated by C) are observed.

[Effects of the Invention] According to the present invention, in a lenticular one-type three-dimensional image display device using a display device such as a liquid crystal, EL, fluorescent display tube, or plasma display, side lobes generated in a lenticular lens can be removed. It is possible to eliminate inverted stereopsis that occurs when the observer moves his head and transitions from the main lobe to the sublobe, and the unnatural appearance of stereoscopic images such as disappearing images reappearing, thereby improving image quality. A good 3D image of the main lobe can be seen.

It is.

1...lenticular lens, 2...Black stripe, 3... Stereoscopic image display surface, 4...Light-emitting pixel.

[Brief explanation of drawings]

Figure 1 is a diagram showing the principle of removing the side lobes of a lenticular lens. Figure 2 is a diagram showing the spread of light rays in a conventional lenticular lens. Figure 3 is a diagram showing how the side lobes of a lenticular lens are removed. FIG. 4 is a diagram showing the characteristics of the visible angle of the stereoscopic viewing area limiting filter. FIG. 5 is a diagram showing an example of the configuration of the stereoscopic viewing area limiting filter. Diagram showing an example of the configuration of an image display device Patent applicant Japan Broadcasting Corporation

Claims (1)

[Scope of Claims] 1) A tertiary device characterized by comprising: a display means, a lenticular lens disposed in front of the display means, and a side lobe removing means having a light shielding effect on light transmitted through the lenticular lens. Original image display device. 2) The three-dimensional image display device according to claim 1, wherein the side lobe removing means has black stripes arranged within the lenticular lens at each pitch of each microlens portion. 3) The three-dimensional image display device according to claim 1, wherein the side lobe removing means includes a viewing zone limiting film placed on the surface of the lenticular lens.