Three-dimensional display

Patent metadata

Field	Value
Publication number	US-2016291336-A1
Application number	US-201415036588-A
Country	US
Kind code	A1
Filing date	Oct 6, 2014
Priority date	Nov 13, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

A spatial light modulator is constituted by a plurality of pixels. A rearrangement optical element guides the light generated by the plurality of pixels of the spatial light modulator onto the screen to rearrange a plurality of pixels on a screen. Each lens of a lens array emits the light generated by the plurality of pixels rearranged on the screen as light beams in respective different directions. A control device controls the spatial light modulator such that a three-dimensional image is presented by the plurality of light beams emitted by a plurality of lenses of the lens array.

First claim

1 . A three-dimensional display comprising:
a spatial light modulator constituted by a plurality of pixels that generate light; a screen disposed at a distance from the spatial light modulator; a rearrangement optical element that is disposed between the spatial light modulator and the screen, and guides the light generated by the plurality of pixels of the spatial light modulator onto the screen to rearrange a plurality of pixels on the screen; a light beam controller that respectively controls directions of light generated by the plurality of rearranged pixels on the screen to emit a plurality of light beams; and modulation controller that controls the spatial light modulator such that a three-dimensional image is presented by the plurality of light beams emitted by the light beam controller.

2 . The three-dimensional display according to claim 1 , wherein
the rearrangement optical element includes a plurality of light-guiding elements that respectively guide the light generated by the plurality of pixels of the spatial light modulator onto the screen.

3 . The three-dimensional display according to claim 2 , wherein each of the plurality of light-guiding elements includes an optical fiber.

4 . The three-dimensional display according to claim 2 , wherein each of the plurality of light-guiding elements includes a lens.

5 . The three-dimensional display according to claim 1 , further comprising a diffuser that diffuses a light beam emitted by the light beam controller in a constant angular range.

6 . The three-dimensional display according to claim 1 , wherein the spatial light modulator includes a plurality of pixel groups, and each pixel group includes a plurality of pixels,
the screen includes a plurality of unit regions respectively corresponding to the plurality of pixel groups, the rearrangement optical element guides light generated by the plurality of pixels in each pixel group to the corresponding unit region of the screen to rearrange a plurality of pixels in each unit region on the screen, the light beam controller includes a lens array having a plurality of lenses respectively corresponding to the plurality of unit regions, and each lens of the lens array emits light generated by the plurality of rearranged pixels in the corresponding unit region of the screen as light beams in respective different directions.

Assignees

• Nat Inst Inf & Comm Tech

Inventors

• Yoshida Shunsuke

Classifications

• H04N13/324

  Colour aspects · CPC title

• G02B30/00 Primary

  Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images (in microscopes G02B21/22) · CPC title

• G02B30/36

  using refractive optical elements, e.g. prisms, in the optical path between the images and the observer · CPC title

• G02B3/0056 Primary

  arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085) · CPC title

• G02B26/0875

  by means of one or more refracting elements · CPC title