Light source control device and image display device

Abstract

This light source control device is provided with: a light source unit that outputs parallel light rays along a second axial direction orthogonal to a first axial direction from any position; a light source control unit that controls the output position of the parallel light rays of the light source unit; one or more deflecting elements that deflect the parallel light rays output by the light source unit; and a first diffusing element that diffuses the light rays deflected by the deflecting element in a third direction orthogonal to the first axial direction and second axial direction. The deflecting element is disposed at an inclination sloped with respect to the first axial direction and has different deflection effects in a first element direction and a second element direction, the first element direction being orthogonal to the optical axis thereof and the second element direction being orthogonal to both the optical axis and the first element direction.

Description

technical field [0001] The present invention relates to an image display device such as a monitor and a light source control device used in the image display device, and more particularly to an image display device and an image display device in which multiple people can observe at free positions without using special glasses in three-dimensional display of images. Light source control device. Background technique [0002] In recent years, as a method of displaying stereoscopic images, a method of realizing stereoscopic viewing has been put into practical use by using glasses to display parallax images for the right eye and left eye respectively to the viewer's right eye or left eye. . However, in this way, the viewer always has to wear glasses, which has the disadvantage of being very cumbersome. [0003] On the other hand, a parallax barrier method or a lenticular lens method are known as methods enabling viewers to view stereoscopically without using glasses or the like...

AI Technical Summary

Problems solved by technology

Regarding this point, if the opening is enlarged, the viewing range can be expanded, but the image for the left eye and the image for the right eye cannot be separated, and crosstalk will occur.

Since the crosstalk and the viewing range are in a trade-off relationship, there is a disadvantage that the viewer cannot watch 3D images at a free position.

In addition, in connection with the defect that the viewing position is limited, there is also a defect that the correspondence of the parallax images entering the left and right eyes becomes a reversed reverse view.

[0009] The third point is that it is not possible to switch between normal 2D images and stereoscopic images.

[0022] The first point is that when a plurality of vertically diffused light rays illuminate a transmissive display for image display, there is a problem that brightness unevenness occurs at the boundary between the vertically diffused light rays

[0023] The second point is that LEDs are currently being used as light sources attached to the lens array, and there is a limit to the arrangement density of LEDs based on the size of the light source.

In this regard, by using a reflective optical system, the distance from the optical element to the transmissive display for image display can be shortened, but this is not practical due to the complexity of the optical system

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