And You Thought 3 D Glasses Went Out With Hula Hoops

Imagine you're an architect showing clients the computer drawings of a new house. Or a doctor using a computer display to describe to your bedridden patient details of the surgery you're about to perform. With CyberBook, from VRex Inc. in Hawthorne, N.Y., you can add simulated three-dimensional imagery to such presentations without sacrificing the portability you get with a notebook computer.

VRex, a company specializing in 3-D computer graphics, plans to ship Panasonic Co. and Apple Computer Inc. notebooks modified with its 3-D display technology called pol. VRex' system creates a pair of stereoscopic images and displays them together, interlaced video line by video line. A polarizing filter layered on the surface of the computer screen and matching glasses make sure that the viewer's left and right eyes see separate images, which creates a 3-D illusion. A VRex executive says the technology will add "a few hundred dollars" to the price of a notebook.