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Virtual Dictionary

Polarized Glasses

Polarised glasses are a subset of shutter glasses. Rather than the shutters opening and closing at a defined rate, continually, the shutters on polarised glasses are permanently down, and polarised. Each is polarised perpendicular to the other such that each half can only accept light beams whose wavelength is in a precise alignment. Typically, the left eye looks through vertical polarizing film, right eye looks through horizontal polarizing film.

They work in conjunction with a display screen that alternates every refresh between horizontally and vertically polarised light. The display rate is halved, but stereoscopic vision can be achieved with only one screen.

Sometimes polarised glasses are termed passive polarised 3D glasses. Both terms mean the same thing.

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Taking a look at shutter glasses, one of the staple technologies for sterioscopic vision in VR and AR.

At CES 2009, Nvidea unveiled a system of active glasses. Specifically, shutter glasses. The frames alternate polarisation to block light out every second frame, so that each eye gets half the screen update rate of any normal monitor, but will work with a normal output stream just fine.

At CHI 2009 (computer Human Interaction conference,) many new modalities of interface were demonstrated. One of the more practical was the product of a team from ETH Zurich's Wearable Computing lab. Vaguely resembling the bastard child of a set of safety glasses and a HMD, the EOG goggles are an eye movement tracking system, that requires no external hardware to operate.


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The Japanese eyewear company behind Sarah Palin's designer glasses has come up with a high-tech solution for obsessive video-gamers and bookworms whose eyes dry out from lack of blinking.

Masunaga Optical Manufacturing Co. L...

Using carpets of aligned carbon nanotubes, researchers from Rice University and Sandia National Laboratories have created a solid-state electronic device that is hardwired to detect polarized light across a broad swath of the visible and in...

Most people?s experience with 3D involves wearing tinted glasses in a cinema. But a new technology, which does not require glasses and may enable 3DTV, is being developed by European researchers.

While the first applications ...

Now here's an odd item stereotypically coming out of Japan that might be of circumstantial interest to those in medical schools. The Wink Glasses are clip-ons that can detect one's blinking, and when the blinking slows, as when you're do...

A research breakthrough means that it is now possible to have truly '3D' monitor displays without needing special glasses, narrow viewing angles, or any other special equipment. Instead, all the work is done inside the prototype unit. ...