Dimmable illumination module for projection systems using a high-intensity discharge lamp via polarization manipulation
An external electronically controlled illumination module utilizing polarizing beam splitters to split the light beam from a projection lamp into two polarization states, selectively altering the state of each polarized light beam to reject a controlled portion of the light where the selectively alt...
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| creator | KANE ROBERT H KANE STEVEN J |
| description | An external electronically controlled illumination module utilizing polarizing beam splitters to split the light beam from a projection lamp into two polarization states, selectively altering the state of each polarized light beam to reject a controlled portion of the light where the selectively altered beams are recombined and passed to the projection system optics. |
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| subjects | ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY FREQUENCY-CHANGING HOLOGRAPHY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF |
| title | Dimmable illumination module for projection systems using a high-intensity discharge lamp via polarization manipulation |
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