Micro-Optic Based Polarization Cameras

    The polarization of light is not readily apparent to our human eyes, but it becomes obvious when we put on sunglasses or see the reflection from a glass surface. Indeed, we can get a far more complete picture of an object than is possible with a simple photograph by observing how it interacts with polarized light.

    Polarimetric cameras render images for various light polarizations to make use of this fact. While these cameras are ordinarily bulky and cumbersome, Professor Stanley Pau has recently created micropolarizer and waveplate films based on liquid crystal polymers that enable compact and fast polarimetric imaging, such as that shown at right — making this technique more useful and versatile in fields from microscopy to surveillance. The micropolarizer operates in visible and infrared wavelengths.

     

    College of Optical Sciences Research
    Polarimetric microscopy of Desmidiales enabled by novel micro-polarizers and waveplates based on liquid crystal polymer.