Deep focus fiber optic lens
Patent 4189207 Issued on February 19, 1980. Estimated Expiration Date: 
April 10, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 10, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1959915 2653516 3188188 3469026 3832029 3913872 Aiming/sighting device Self imaging system using a waveguide Multifocal length lens Patent #: 4157213 InventorsApplicationNo. 06/028689 filed on 04/10/1979US Classes:385/116, Imaging (i.e., with coherent fiber structure and includes shaping, enhancing, and correcting)359/601, GLARE OR UNWANTED LIGHT REDUCTION359/642LENSExaminersPrimary: Corbin, John K.Assistant: Lee, John D. International ClassG02B 6/06 (20060101)AbstractA lens comprising a plurality of identical straight optical fibers arranged in a bundle with at least a portion of each fiber treated to suppress internal reflections, so that each fiber transmits only rays which enter the end of the fiber substantially parallel to its axis at that point, the angle between adjacent fibers of the bundle of optical fibers being adjustable to provide a lens for a range of solid angles, with a field of any shape and an image adjustable in size which may be altered in location and plane, by extending the optical fibers by flexible sections with internal reflections permitting transmission of rays on curved paths.Other References
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