Title:
THREE-DIMENSIONAL DISPLAY AND THREE-DIMENSIONAL DISPLAY METHOD
Document Type and Number:
WIPO Patent Application WO/2004/025380
Kind Code:
A1
Abstract:
A small, inexpensive three-dimensional image display having a structure for displaying a color three-dimensional image sharply even if a low-resolution spatial optical modulating element is used. The three-dimensional image display has an illumination light source unit, a transmission spatial optical modulating element, a lens, and a mask. The illumination light source unit includes three point light sources outputting illumination light components having wavelengths (red, green, blue) different from one another. The point light source outputting the blue illumination light component of the shortest wavelength is disposed in position B (0, 0) on the optical axis of an illumination optical system, the point light source outputting the red illumination light component is disposed in position R (xr, 0), and the point light source outputting the green illumination light component is disposed in position G (xg, 0). An aperture section of the mask is disposed in the region where the zero-order diffracted waves of the reproduction light components of the three wavelengths after subjected to wavefront conversion by the lens are superposed on one another. The illumination optical system determines the direction of incidence of each of the illumination optical components of the three wavelengths on the spatial optical modulation element.
More Like This:
| JP6332145 | 3D viewer |
| JPH03179995 | STEREOSCOPIC PICTURE DISPLAY DEVICE |
Inventors:
TAKEMORI TAMIKI (JP)
IKEDA TAKAHIRO (JP)
IKEDA TAKAHIRO (JP)
Application Number:
PCT/JP2003/011625
Publication Date:
March 25, 2004
Filing Date:
September 11, 2003
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
TAKEMORI TAMIKI (JP)
IKEDA TAKAHIRO (JP)
TAKEMORI TAMIKI (JP)
IKEDA TAKAHIRO (JP)
International Classes:
G02B27/22; G03H1/08; G02F1/13; G03H1/22; G03H1/24; G03H1/26; (IPC1-7): G03H1/26; G03H1/16
Foreign References:
| JP2000250387A | 2000-09-14 | |||
| US5798864A | 1998-08-25 |
Other References:
FUKAYA N ET AL.: "Expansion of image size and viewing zone in holographic display using liquid crystal devices", PROCEEDINGS OF THE SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, vol. 2406, 1 January 1995 (1995-01-01), pages 283 - 289, XP002363132
Attorney, Agent or Firm:
Hasegawa, Yoshiki (Ginza First Bldg. 10-6, Ginza 1-chom, Chuo-ku Tokyo, JP)
Download PDF: