Laser light source improves image quality in smart glasses

April 10, 2014 // By Paul Buckley
EpiCrystals Inc., of Finland has developed a revolutionary multicolor laser light source which is especially designed to improve the usability and image quality in advanced projection applications such as smart glasses and other wearable augmented reality devices.

Emerging wearable electronics devices like near-to-eye displays (NTE) or head-mounted displays have recently been introduced by more companies than ever before. The common approach to form an image is to use a 5-inch to 7-inch LED/OLED screen or LCOS with a LED light source. The end result is often either bulky or the image quality is poor due to washed out colors, low contrast and resolution.

A light weight see-through image with excellent (3D) quality provided to both eyes in a wide viewing angle is the preferred solution. Heads-up displays for the automotive industry are facing similar challenges in providing great image quality while not disturbing the driver.

"Our technology is a true breakthrough versus other light sources and brings several advantages. For example, unlike conventional light sources our laser does not emit any visible spontaneous emission which limits the achievable contrast and quality. When our laser is turned on only stimulated laser emission is in use giving rise to infinite contrast – finally black is black, and the gray box in the background seen in projected images today is now gone. We also want to provide our customers with a light source solution which makes system design and production easier than ever. A single very small module with precisely aligned beams and low operating voltage of 2 V is the key here. We will continue developing even smaller, less power consuming and more cost-effective solutions to answer the needs of the industry,” said Vice President of Business Development Tomi Jouhti of EpiCrystals Inc.

EpiCrystals has started shipping pre-production samples to partners and customers.

www.epicrystals.com