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Innovative see-through display tech to enable smart eyewear

16 Nov 2015

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Dispelix Oy, a spin-off company from VTT Technical Research Centre, Finland, is bringing to market what it describes as an innovative see-through display technology for smart eyewear. The technology is based on light guide optics that offer a simple way to transfer an information stream from a miniaturised image source to the user's eye.

The display uses a patented out-coupling element with superior see-through properties. The element has high see-through transparency (60-80 per cent), it does not produce any optical aberrations, and the view through the element is crystal clear without any haze or rainbow patterns. The display element is only 1mm thick, making it lightweight and compact for aesthetic eyewear. The laterally wide out-coupling element expands the eye-box in the horizontal direction, providing good user experience for all users with varying interpupillary distances.

The Dispelix display technology is targeted for both consumer and enterprise applications. The enterprise market is expanding rapidly, finding new applications from health, manufacturing, process and logistic industries. Smart eyewear increases productivity, reduces mistakes, and allows hands-free operation in demanding environments.

Dispelix display

The Dispelix display uses a patented out-coupling element that does not produce any optical aberrations and the view through the element is crystal clear without any haze or rainbow patterns.

The success of smart eyewear products in the consumer market is largely defined by factors such as aesthetics, user experience and price. The Dispelix technology overcomes the difficult trade-off in optical see-through display design and meets all the key design objectives at the same time, stated the company. Dispelix's displays are mass-customisable and can provide a monochromatic or full colour image. They can be manufactured in high yields to produce high definition images meeting customer specifications. Both plastic and glass can be used as the display material. This widens the selection of manufacturing approaches that are available for high volume production. The displays are compatible with all common miniature image sources of smart glasses: LCOS, LCD and LED microdisplays as well as LED and laser projectors. A narrow image in-coupling element of the company's displays enables thin, aesthetic eyewear frame designs. The display element provides a 29° field of view.

Dispelix Oy is now fund-raising and forming partnerships in order to bring to market a disruptive display device, with enterprise and consumer applications. Dispelix has working prototypes backed by strong IP and many years of research and development at VTT Technical Research Centre of Finland.

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