| 摘要 |
A concave conical-planar lens which receives and refracts three annular convergent conical incipient beams of diffused sunlight, producing three annular spectral beams; a circular shield with three annular slits which emit the ultraviolet portions of the beams through the planar section of the lens; three annular 45 DEG mirrors which reflect the ultraviolet beams in toward the vertical axis of the concentrator, forming three lateral ultraviolet beams in the horizontal planes; a conical 45 DEG mirror which reflects the lateral ultraviolet beams downward, forming a whole ultraviolet beam; and a conical beam concentrator which refracts the whole ultraviolet beam, forming a concentrated whole ultraviolet beam which is emitted in the vertical axis of the concentrator.
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