METHOD AND APPARATUS FOR EVALUATING THE PERFORMANC

专利名称：METHOD AND APPARATUS FOR
EVALUATING THE PERFORMANCE
CHARACTERISTICS OF ENDOSCOPES 发明人：ROSOW, Eric,BEATRICE, Finton,ADAM, Joseph,YOUNGDAHL, Curtis
申请号：EP98911877.3
申请日：19980320
公开号：EP0968410A1
公开日：
20000105
专利内容由知识产权出版社提供
摘要：In a method and apparatus for evaluating the performance characteristics of fiber-optic endoscopes, a beam of light defining a predetermined intensity pattern is transmitted through the endoscope from a tip end through an eyepiece end of the endoscope. The intensity pattern of the beam defines either a uniform intensity, or an intensity which varies sinusoidally in a predetermined direction across the beam. The following tests are performed in order to evaluate both the optical fibers and the lens system of the endoscope, and the intensity pattern is selected in accordance with the requirements of the respective test: (i) a light loss test, (ii) a reflective symmetry test, (iii) a lighted fibers test, (iv) a geometric distortion test, and (v) a MTF test. A video system generates signals indicative of the optical intensity of the beam after transmission through the endoscope at each of a plurality of predetermined locations within the beam. The video signals are in turn evaluated in accordance with the selected tests in order to provide graphical and numerical indicia of the optical performance characteristics of the endoscope.
申请人：Hartford Hospital
地址：80 Seymour Street,P.O. Box 5037 Hartford, CT 06103-5037 US 国籍：US
代理机构：Menges, Rolf, Dipl.-Ing.
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