Depth Q Polarization Modulator 2009 P D F W E B V1 2
- 1. www.depthq.comFor more information please call +1.206.784.1385 Passive Polarized Eyewear (with matching Linear or Circular Polarization) Result: Orientation B DepthQ速 Modulator (Linear or Circular Polarization) Result: Orientation A Single-lens 3D Projector Operational Example Lightspeed Design, Inc., with headquarters in Bellevue, Washington, USA is one of the world's premiere designers of stereoscopic 3D (s3D) presentations, projection, and image-processing software technologies and has been a leader in stereoscopic3Dforoversixteenyears. Clients include Pfizer, Intuitive Surgical, Microsoft, Harvard & Munich Universities, US Army, NASA, JPL, DreamWorks SKG, IMAX, andWaltDisneyAnimation. LC-TEC Manufacturing facility, Borl辰nge, Sweden The new DepthQ速 Polarization Modulator is a joint product of LC-TEC DISPLAYS AB and Lightspeed Design, Inc., and is sold and distributed worldwide exclusively by Lightspeed Design, Inc. LC-TEC DISPLAYS AB, headquartered in Borl辰nge, SWEDEN, started operations in 1992 and has extensive experience in manufacturing and developing liquid crystal devices (optical-shutters & custom LCDs) on an R&D, prototypingandvolumemanufacturinglevel. The DepthQ速 Polarization Modulator utilizes a unique combination of separate liquid crystal elements stacked 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 between polarization states from 120Hz to 400Hz. Transition time between optical states is <0.5ms at room temperature. 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, and Large, for projectors with apertures <7.12 inches. It is also available pre-configured for either linear or circular polarization. Control Unit Liquid Crystal Modulator (Small model) Large Aperture: 7.12x5.94(180.85x150.85mm) Small Aperture: 2.75x2.51(69.85x63.85mm) Efficiently alternates the polarization of light passing through it between two orthagonal orientations (of either circular or linear polarization) in sync with progressive page-flip stereoscopic data. In combination with a single-lens stereoscopic 3D projector and a polarization-preserving screen, this enables high-brightness, low-crosstalk (ghosting) viewing via lightweight & comfortable passive 3D eyewear. The DepthQ速 Polarization Modulator D E S I G N FromFrom HDs3DHDs3DPrecision
- 2. Lightspeed Design, Inc. 1611 116th Ave NE, Suite 112 Bellevue, WA 98004 USA 206.784.1385 www.depthq.com D E S I G N *Value for Small model. Capacitance is a function of the total area of Polarization Modulator. Volts Hertz 袖A mA 袖F 10 10 --- --- --- 30 1000 --- --- --- 24 50 --- --- 0.32* VD fD lD lP C --- Square Wave VD=24V; fD=10 Hz VD=24V; fD=10 Hz VD=0V Driving voltage (AC) Driving frequency (rec) Current Consumption Peak Current Capacitance UnitsMaximumTypicalMinimumRemarkSymParameter Electrical Specifications Volts Hertz degrees Celsius degrees Celsius 30 1000 +75 +90 0 10 -10 -30 Driving voltage (AC) Driving frequency Operating temperature Storage temperature UnitsMaximumMinimumParameter Absolute Maximum Ratings Specifications Advantages of Using the DepthQ速 Polarization Modulator: Viewer Comfort: -Glasses are lightweight -Single-projector solution eliminates possibil- ity of geometric asymmetry between eyes -Likewise, no vertical or horizontal parallax problems -And no bulb differences (intensity and color temperature over time) Ease of set-up : -Modulator placement is simple and forgiv- ing - just set it in front of the projector -No time-consuming alignment of superim- posed images required Lower Cost/Maintenance: -No moving parts -Less hardware than two projector solutions -Glasses are inexpensive Options for Viewing: -Choose between circular or linear polariza- tion models -Glasses are available in a variety of form- factors, from paper to plastic to wire-frame Versatililty: -Enables applications from theme parks and commercial 3D theaters to scientific and industrial visualization Flexible Pricing: -Pricing model reflects application and use Polarization Modulator operating at an optical frequency of 400Hz and placed between mutually crossed linear polarization- sheets in order to obtain optical transmission contrast. Optical performance of the polarization modulator when placed between mutually crossed linearpolarization-sheetsatroomtemperature(25oC)withinitiallyunpolarizedincidentlightis shownbelow. Opticalpolarizationmodulatedatafrequencyof400Hzwith1.5mszero-voltage time-period between polarity-reversals. Transition speed between optical states < 0.5ms at roomtemperature. Optical states generated by the polarization modulator when used together with passive linear polarized viewing-glasses. Transmis- sion spectra are predomi- nantly achromatic for visible wavelengths. Four unique optical states are used in the generation of the 3D stereoscopic image; namely (i) Left-eyeOPEN(ref:VON-Open),(ii)Right-eyeCLOSED(ref:VON-Closed),(iii)Right-eyeOPEN (ref:V OFF - Open), and (iv) Left-eye CLOSED (ref:V OFF - Closed). Transmission spectra for the individualopticalstatesareshownbelow,measuredaftercommonlinearpolarizedeyewear. Technical Data Polarization Modulator