DigiLens, an innovator in holographic waveguide display technology for extended reality (XR), announced T-REx (Transparent Resolution Expander). The solid state, electrically switchable wobulation solution, a cutting-edge core technology component doubles the resolution of attached light engines within XR smartglasses without adding any material size, weight or power (SWaP) requirements to the head worn system.
This takes high-definition (HD) content and allows it to be viewed on hardware that previously was not able to support HD images when measuring by pixel count. This enables OEMs to provide hardware that can support high resolution content – including high precision usage in the medical or enterprise field – without forcing a tradeoff in wearability or durability.
It also provides the option for smartglasses manufacturers to leverage lower resolution hardware that is smaller in volume, weight, and thermal dissipation – three factors that are critical for compelling XR smartglass offerings.
Many of the augmented and XR applications being developed today require a high angular resolution as well as a large field of view. These requirements mean that the projector or display of choice needs to have an ever-increasing number of pixels. This drives cost, size and power consumption and there is a limit to how small the projector pixels can become.
T-REx is a smart and power efficient method for increasing the resolution of a chosen light engine coupled with existing DigiLens waveguides. It achieves this by implementing a proprietary hardware and software process that ultimately doubles the resolution of the content through solid state wobulation and thereby delivers maximum resolution in the smallest, most cost-effective package possible.
When added to DigiLens’ modular approach to XR glasses, the customer can choose to use this increased resolution component technology to reduce projector size, enable a larger FOV at a fixed resolution or simply reduce the cost of the projector by reducing its resolution and then doubling the systems overall resolution with the T-REx add on.
“This is a real technological breakthrough as very rarely do you improve on pixel experience without any sort of trade off,” said Chris Pickett, CEO of DigiLens. “It also expands the possibilities of our waveguides for a range of customers and use cases, who can benefit from a system they can upgrade and mold to their unique needs rather than a one size fits all approach where you have to wait for a whole new generation of products to benefit from updated specs.”
The T-REx switchable gratings generate a wobulation characteristic that now opens several new technical configurations that the hardware marketplace has never before had access to at this performance level. DigiLens’ waveguide can switch as fast as 50µs so they can easily support full color RGB wobulation at 60Hz and even 90Hz. This allows the eye to integrate it automatically and a viewer to experience a high-resolution image despite a lower resolution projector.
Advantages of T-REx:
Resolution doubling: Doubles the resolution of the projector that is coupled with the waveguide.
Competitive power consumption: 19.8-milliwatts for a Crystal50 waveguide (RGB) at 60Hz wobulation. This is really 3 times 6.6-milliwatts for each of the waveguide that make up the RGB stack. A single-color waveguide can be upgraded with T-REx for a total of just 6.6-milliwatts power consumption.
Space savings: T-REx waveguides are no larger than a normal Crystal50 waveguide since the switchable gratings take the place of standard input gratings within the waveguide itself. The only added measurable weight is the flex cable coming out of the waveguide and the chip that would be needed to provide the voltages. This equates to approximately 0.15g extra weight.
Projector compatibility: Compatible with all established projector types. This includes but is not limited to; LCoS, µLED, DLP, OLED, LBS and WILD. The only requirement on the projector is that there is a temporal separation between consecutive frames.
Heat and sound: T-REx does not produce any heat, sound or vibration and can run non-stop and indefinitely. Other wobulation alternatives generate a buzzing sound and/or heat and can be bulky and/or power hungry.
T-REx is available as an optional add-on component technology grant to the baseline manufacturing and supply license for any of DigiLens’ licensees; or customers and partners can gain access to the technology by requesting the functionality when undertaking a custom smartglasses project within the Visualize Framework.
