VerLASE Gets Another Patent for Color Conversion Technology Targeting Augmented Reality Applications
VerLASE Technologies announced today that US Patent No. 9,354,366 has issued, extending aspects of its revolutionary Chromover™ color conversion technology. The technology is a new approach for efficiently converting colors from inexpensive, widely available blue/violet light sources such as LEDs or laser diodes to any color in the visible, in particular to the optimal greens and reds needed for the ideal projection of images, whether in Near Eye Displays (NEDs) for Virtual (VR) and Augmented Reality (AR) applications, or in larger projectors. Not only can the color of the output light be tailored, but also spectral characteristics and directionality. Devices can be designed as a laser, directional LED, or in-between, depending on the application.
The technology is ideally suited for integrating with microLED displays for the next generation of NEDs needed in AR applications. The light sources and microdisplay technologies used today have numerous drawbacks, whether in color quality, resolution, brightness, efficiency, or longevity, or a combination of all these. MicroLED technology, with individually addressable pixels, would be preferred for higher brightness and efficiency leading to longer battery life and very compact physical forms, but they are typically only monochrome (blue /violet) emitters. Phosphors or Quantum Dots have not been shown to work with microLEDs; moreover, many AR approaches use diffractive or holographic waveguide optics which are sensitive to the input angles and spectral width of the input source light.
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