DepthQ Polarization Modulator

The new DepthQ® Polarization Modulator electronically switches the polarization orientation of light passing through it. In combination with a polarization-preserving screen and a single-lens stereoscopic 3D projector like the DepthQ® HD 3D Projector, this enables high-brightness, low-ghost viewing using lightweight & comfortable passive 3D eyewear.

The DepthQ® Polarization Modulator utilizes a unique combination of separate liquid crystal elements bonded together, enabling both high polarization efficiency over visible wavelengths from 400 to 750 nm (predominantly achromatic spectral response) as well as fast transition switching speeds (<0.5ms at room temperature) between polarization states at frequencies from 120Hz to 400Hz.

TECHNICAL DESCRIPTION

By actively alternating between two orthogonal polarization orientations in sync with progressive page-flip stereoscopic data, matching polarized eyewear can passively block or transmit light to the viewer's eyes at the appropriate moment. Efficient, high-speed switching between the eyes ensures bright, low-crosstalk, flicker-free operation.

The system includes both the liquid-crystal modulator as well as its control unit. A standard sync output from your graphics card or projector is supplied to the control unit, which then conditions the signal to match the modulators required input.

The modulator is available in two sizes: Small (pictured), for projectors with apertures <2.75 inches (69.85mm), and Large, for projectors with apertures <7.12 inches (180.85mm).

The optical window is also very heat-tolerant and can operate at temperatures up to 75 degrees Celsius (elevated temperatures actually enhance switching speeds).

The DepthQ® Polarization Modulator is available pre-configured for either linear or circular polarization.