Abstract
We present here the development of a volumetric display based on the
two-frequency, two-step upconversion technique using novel techniques for addressing the
imaging volume. Two 1024x768 digital micromirror displays, driven by 30-W lasers at 1532
and 850 nm are utilized to generate fast scanning of the image volume in a 17 mmx17
mmx60 mm 2% erbium-doped lithium yttrium fluoride (YLF) crystal. Experimentally, images
at 532 nm were created at 30 (frames)x1024x768 resolution, resulting in almost 23
million voxels, at 500 frames/s, significantly higher than that obtained with
three-dimensional (3D) raster scanning (frame is 2D cross-sectional plane of the 3D
image). Imaging optics modified from projector systems and fiber-optically coupled to
the source, combined with custom designed software for converting two-dimensional (2D)
rendering of volumetric images into control signals for the digital micromirror displays
allow single-color image generation with no flicker and natural depth cues. Improvements
in optical power efficiency and the speed of digital micromirror display controller
boards are needed for the system to reach its full potential. The resulting system has
the potential to increase resolution to nearly 800 million voxels without viewpoint
obstruction and expand to three-color imagery.
© 2009 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription