Fraunhofer FEP
Develop data glasses faster
Scientists from the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology will be showcasing their latest developments in special microdisplays for augmented reality and virtual reality data glasses at embedded world 2018.
Microdisplays are a key component of augmented reality (AR) and virtual reality (VR) smart glasses.
© Fraunhofer FEP
Augmented reality is increasingly finding its way into everyday working life thanks to smart glasses. One reason for this is that the required technologies are now at a level that enables compact, powerful data glasses that are comfortable for the user. "We use OLED-on-silicon technology for our microdisplays. OLEDs are self-luminous and, unlike other display types, do not require any additional lighting, thus enabling simplified optics and significantly higher contrast ratios," explains Bernd Richter, Deputy Head of Microdisplays and Sensor Technology at Fraunhofer FEP. "Other functions can even be integrated directly into the display, such as a camera function that allows the information shown in glasses to be controlled with the eyes."
As different as the areas of application for data glasses are - support in the maintenance of systems, checking the health of people or a simple display of information for joggers or cyclists - as different are the corresponding data glasses.
In order to make it as easy as possible for developers of data glasses to use OLED-on-silicon technology in their glasses in an application-oriented manner, the scientists offer evaluation kits - i.e. development tools.
Content control with the eyes
One specialty here are bidirectional microdisplays that combine high-resolution SVGA OLED microdisplays with embedded SVGA image sensors in an active area. These evaluation kits can be used to develop glasses that allow the user to control the displayed content with their eyes, leaving their hands free for assembly work, for example. In addition, these bidirectional displays can be used as a basis for the development and evaluation of optical sensors, such as optical fingerprint sensors.
Ultra-low power OLED microdisplay
Ultra-low-power displays are particularly suitable for displaying simple information. Although these have a limited resolution, an innovative approach to the design of the display backplane can reduce the power consumption to a fraction and thus enable significantly longer battery life with small and lightweight systems. This is particularly beneficial for data glasses for athletes, e.g. for displaying mobile navigation or fitness data.
Large OLED microdisplay
At embedded world 2018, the FEP is presenting an evaluation kit with a particularly large-area OLED microdisplay for the first time, which is particularly interesting for VR applications. This OLED microdisplay was developed in the LOMID project (Large-Area Cost-Efficient OLED Microdisplays and their Application).
The researchers can also develop customized OLED microdisplays on request - completely adapted to the intended use of the display. OLED-on-silicon technology is also successfully used for sensors: for all sensor tasks in which something must first be illuminated and the reflected light must be detected and evaluated in real time, such as optical biosensors or fingerprint sensors.
Fraunhofer FEP, Hall 4, Booth 470
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