Facebook Reality Labs develops mechanical vibration components to reduce screen window effects of VR display screens
According to Gadget Pixels news, on January 10, Foreign Media Roadtow. Facebook Reality Lab and University of Arizona jointly announced the high-speed mechanical vibration component on January 8. Which can reduce the screen window effect (SDE) of the VR display. this effect. Due to the very large gaps between pixels.
Facebook Reality Labs – Dispaly |
Screen window effects have always been a major problem for VR displays, and almost all devices on the market have this problem. (Except HP Reverb G2). This effect will, and can, damage the look and feel and definition of the video. Resolution has been improved by increasing it. The device has two pairs of power cords to provide power for the X axis and Y axis. The display screen is fixed on a movable metal base, and the screen uses an independent cable to transmit the signal.
According to the Facebook Reality Labs to minimize screen window effects. Some manufacturers choose to use a smaller visual field and higher screen distances to avoid this problem. Some brands use diffuser diaphragms to mix light. This method is similar to the camera’s anti-shake technique. CMOS, which quickly shakes the screen to fill gaps between pixels.
This method uses piezoelectric materials to drive screen platform displayable movement at a frequency of 120Hz or more. The amplitude of movement can be selected according to the pixel dimension. In addition, this method can be adapted for 480Hz display screen. A frame can be divided into four subframes, and more complex paths are used to fill the pixels. What researchers call the “non-redundant” method.
Gadget Pixels have understands that the movement path of this method can be round, cross, or figure eight. For OLED displays According to the Facebook Reality Labs, a circular is more appropriate. This method can slightly increase the clarity of the image while reducing the screen window effect.
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