Optoma describes the EH320USTi as:
"Optoma’s 1080p ultra short throw interactive projector, the EH320USTi, is perfect for businesses, schools and colleges. It is bright (4,000 lumens) and uses a new generation of TouchBeam finger-touch interactive technology, enabling several people to work simultaneously on the screen without using a pen. The throw ratio of 0.25:1 means that it can project a 100” image from just 55cm away. And having the projector installed so close to the screen avoids any shadows being cast across the screen from the presenter(s)."
"It provides a complete package for engaging learning with many new features, including two HDMI inputs, powered USB port, powerful 16W built-in speaker, improved lamp life, compact chassis and a completely new mounting system for a fast and simple set-up."
Optoma bills the EH320USTi as the industry's first 1080p Ultra Short Throw projector. Ultra short throw projectors are becoming more popular as white board projectors for use in the classroom or conference room. Also stylus pens and finger touch sensors are becoming more common on the higher-end ultra short projectors. The EH320USTi includes a pair of passive interactive pens, whose position on the white board is tracked by the projector's built-in camera along with the included IR laser touch module. This setup, using the touch module supplying the IR light source along with the projector's IR camera, is used to determine the position of the pen or the presenter's finger position on the white board. Unlike the active pens found with most other interactive projectors, the pens supplied with the EH320USTi are truly passive (just a piece of molded plastic) so the sensing of the pen's position or the position of a finger on the white board use the same technology.
With a price of $1799 the EH320USTi is very competitive, in terms of both features and price, for this class of interactive projector. The EH320USTi is Optoma's top model in this series of ultra short throw models. Optoma also offers the lower priced model EH320UST (for $200 - $250 less - street price), which is essentially the same projector without the interactive features.
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