1 February 1981 Optical System With Fiber Optical Elements
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Optical Engineering, 20(1), 200195 (1981). doi:10.1117/12.7972670
Many reflecting and refracting elements are required in the construction of a conventional optical system with a low f/number. Such a system poses problems in alignment and mechanical stabilty when operating in severe environments over a wide temerature range. A fiber bundle designed in the form of a cone with larger entrance diameter than the exit diameter transmits and reduces the uimage size. A simple lens of longer focal length and larger effective aperture can be used to produce an imageat the entrance of the cone. Since there is a gain in flux per unit area, this system intesifies as well as trasmits an image. It also enables the use of a detector of smaller size to achieve a higher signal-to-noise ratio. An effective optical systen for doing this is described and demonstrated.
Robert Y. Wong, Mohammad R. Jafarpour, "Optical System With Fiber Optical Elements," Optical Engineering 20(1), 200195 (1 February 1981). https://doi.org/10.1117/12.7972670

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