Spring actuated sequential color filter for image tubes
Abstract
Abstract A METHOD AND AN APPARATUS FOR TAKING COLOR PHOTOGRAPHS OF SUBJECTS AT LOW LIGHT LEVELS. RED, GREEN AND BLUE COLOR FILTERS ARE MOVED SEQUENTIALLY AND LINEARLY ACROSS THE INPUT FACE OF AN IMAGE INTENSIFIER TUBE. SIMULTANEOUSLY, RED, GREEN AND BLUE COLOR FILTERS ARE MOVED SEQUENTIALLY AND LINEARLY ACROSS THE OUTPUT FACE OF THE IMAGE INTENSIFIER TUBE, IN SYNCHRONIZATION WITH THE FILTERS MOVING ACROSS THE INPUT FACE. AN OBJECTIVE LENS IS FORWARD OF THE FILTERS MOVING ACROSS THE INPUT FACE AND A RELAY LENS IS TO THE EAR OF THE FILTERS MOVING ACROSS THE OUTPUT FACE. THE OBJECTIVE LENS, THE IMAGE INTENSIFIER TUBE, AND THE RELAY LENS ARE CO-AXIAL, HAVING THE SAME OPTICAL AXIS. THE FILTERS ARE IN PLANES PERPENDICULAR TO SAID AXIS. THE FILTERS ARE THE RELAY LENS AND PERPENDICULAR TO ITS OPTICAL AXIS IS USED AS THE RECORDING MEDIUM FOR THE RESULTANT INTENSIFIED COLOR IMAGE.
Inventors
- 👤 Edgar Hutto Jr
- 👤 Patrick F Joy Jr
Bibliographic Details
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