A new volumetric 3D display using multi-varifocal lens and high-speed 2D display

Takanori Sonoda; Hirotsugu Yamamoto; Shiro Suyama

doi:10.1117/12.873305

15 February 2011 A new volumetric 3D display using multi-varifocal lens and high-speed 2D display

Takanori Sonoda, Hirotsugu Yamamoto, Shiro Suyama

Proceedings Volume 7863, Stereoscopic Displays and Applications XXII; 786322 (2011) https://doi.org/10.1117/12.873305
Event: IS&T/SPIE Electronic Imaging, 2011, San Francisco Airport, California, United States

Abstract

We have developed a new volumetric 3-D display using the multi-varifocal lens and high-speed 2-D display. Floating clear 3-D image in space can be successfully obtained. Our volumetric 3-D image is composed of many 2-D layered images by using multi-varifocal lens. Many 2-D images can be layered by changing their depth position using the discrete focal length change of multi-varifocal lens. The high-speed multi-varifocal lens is composed of several sets of a birefringent lens and a polarization switching device. The total lens power is the sum of the lens powers of these sets. The number of lens sets, N, can yield 2^N variations of total focal lengths. In order to re-position many 2-D images within afterimage time, high-speed 2-D display is newly constructed by compact projector array using LED light sources. These projector images are projected to the same position of one screen. By switching these projectors quickly, 2-D images on the screen can be displayed at high-speed. This high-speed 2-D display can successfully provide bright and clear 2-D layered images by using point light sources of LED.

Citation Download Citation

Takanori Sonoda, Hirotsugu Yamamoto, and Shiro Suyama "A new volumetric 3D display using multi-varifocal lens and high-speed 2D display", Proc. SPIE 7863, Stereoscopic Displays and Applications XXII, 786322 (15 February 2011); https://doi.org/10.1117/12.873305

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