STEREOGRAPHICS CRYSTALEYES USED IN FIRST 3D STEREOSCOPIC CLASSROOM AT
CORNELL UNIVERSITY

Biochemistry, Molecular Biology Classes Manipulate Three-Dimensional, Full
Color Stereo Images Of Complex Molecular Structures Projected On Large
Screen; Professor Finds Student Response 'Overwhelming'

San Rafael, CA -- July 25, 1994 -- StereoGraphics Corporation, the world's
largest supplier of three-dimensional electronic stereo display equipment,
announced that the first stereoscopic classroom to be installed on site at
a major university will open this fall at Cornell University, Ithaca, New
York.

The stereoscopic classroom utilizes the StereoGraphics CrystalEyes Stereo
Projection System, which enables any number of students to view projected
computer images in true three-dimensional stereo. Up until now, 3D
computer images were shaded to give the illusion of stereo and did not
provide the necessary negative and positive parallax capabilities
necessary for binocular perception.

Cornell University's stereoscopic classroom seats 56 biochemistry and
molecular biology students who will wear StereoGraphics patented,
lightweight CrystalEyes wireless shuttering glasses to view 3D images
projected on a 10- by 12-foot Stewart-brand screen. The images are created
on a Silicon Graphics Onyx workstation with a Reality Engine graphics
processor and are projected by an Electrohome Marquee 8000 Data
Projector.

Keyboards, mice and controls distributed throughout the classroom will
enable students to rotate, spin and superimpose projected images of
complex molecules.

Professor Steven Ealick, director of the Keck Laboratory for Molecular
Structure and professor of biochemistry, molecular and  cell biology at
Cornell University, said, ' Students can look at a flat representation of
an organic molecule a dozen times and still not understand its structure.
No matter how many words we use, it's very difficult to explain the three
dimensional arrangement of atoms. But what's complicated to describe is
easy to visualize. It's amazing how quickly students pick up the concept
when shown the structure in 3D. The response has been overwhelming.'

The Cornell stereoscopic classroom originated as a research project funded
by the W. M. Keck Foundation. Professor Ealick will coordinate the use of
the classroom for five courses in chemistry and biochemistry, which will
include viewing both small organic molecules and complex biological
macromolecules.

Wil Cochran, vice president of sales and marketing for StereoGraphics,
said, "Three-dimensional stereo vision is one of the most powerful
teaching tools that has ever been developed. In the near future, schools
that don't offer stereoscopic classrooms won't be academically
competitive."

Several other universities are currently planning to offer classrooms using
stereoscopic and virtual reality teaching aids. For example, CrystalEyes
will also be used this fall at the San Diego SuperComputing Center for
students attending San Diego State University, San Diego, California.

CrystalEyes stereo electronics displays separate left and right fields
which are alternated at high speed onto the screen for viewing through the
eyewear. Because the untethered CrystalEyes glasses are synchronized with
the stereo image by the infrared emitter, users simultaneously view 3D
screen images with complete freedom of movement.

The patented CrystalEyes eyewear delivers a minimum dynamic range of 250:1,
ensuring a realistic, high-resolution, ghost-free color image, while the
120Hz screen refresh rate in stereo mode provides flicker-free viewing.

For larger classes or lectures, students wear StereoGraphics less-expensive
passive polarizing glasses. In this application, the same electronics that
are used in CrystalEyes active shuttering eyewear are integrated into a
shuttering lens, called a ZScreen, attached to the data projector. The
ZScreen configuration enables large groups of 100 or more to
simultaneously view 3D objects and reduce the cost of eyewear per
student.

A wide variety of life sciences and scientific visualization stereo-ready
software programs are also CrystalEyes-compatible, including Sybil (Tripos
Associates), Quanta/Cerius (Molecular Simulations, Inc.), Mathematica
(Walfram Research) and Hyperchem (Hypercube).

CrystalEyes products are available with or for most major stereo-ready
workstations, personal computers, monitors and software programs.
Platforms include such major workstation OEMs as Silicon Graphics, Inc.,
Sun Microsystems, Digital Equipment Corp., Evans & Sutherland,
HewlettPackard, IBM and Kubota Graphics Corp. Personal computers include
IBM PC and compatibles, Macintosh, Power Mac and Power PC, and Amiga.
Stereo-ready monitors include NEC, Hitachi, Sony, Philips, Mitsubishi,
Radius and Rasterops.

StereoGraphics Corp., founded in 1980, invented and developed the market
for modern stereo imaging hardware. Due to its capability, reasonable
price and state-of-the-art technology backed by 14 patents, CrystalEyes
systems are accepted as the industry standard for stereo viewing.
StereoGraphics is located at 2171 East Francisco Boulevard, San Rafael,
California 94901, phone 415/459-4500, fax 415/459-3020, email
stereo@well.sf.ca.us.

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