| 摘要 |
The disclosure is a microscopic lens comprising three component lenses with concave and convex conical sections which refract light rays. Rays emanating from an object pass through five conical surfaces, first being refracted outward and separated to form a ring image, and then being refracted inward and rejoined to form an enlarged image. There is one outward refraction as opposed to three inward refractions, and it is the difference between these refractions that produces magnification of the object. Magnification produced by one conical microscopic lens is small, so a number of lenses are used to form multi-stage microscopes in which magnification increases at an exponential rate. Thus, though the initial stage lens might produce a small magnification of only 4.5x, two stages will produce a magnification of 20x, three stages 91x, four stages 410x, etc. Eight stages produce a magnification in excess of 100,000x, which is in the range of magnification achieved by electron scanning microscopes. The use of multiple stages is possible because both the rays entering the lenses and the rays leaving the lenses are parallel.
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