| 摘要 |
An improved line lens for producing output radiation in the form of a narrow sheet from a collimated input beam despite the use of a lens material having an index of refraction of less than 1.6. A novel design method permits redistribution of output energy as a function of angle along the surface of the lens to achieve the specified output pattern and defines the polynomials of the contoured surface curves of such a lens. In one embodiment of such a lens, which is designed by the inventive method, the input shape is contoured by circular segments and the exit surface is contoured according to the design-method-produced polynomials.
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