| 摘要 |
A lens for use on a device to assist in the phototherapeutic treatment of skin disorders where the device includes a housing having an interior containing a source of ultra-violet radiation or being adapted to receive ultra-violet radiation from an external source. The lens comprises a sheet-like structure releasably securable to the housing and for assisting in the direction of ultra-violet radiation from the housing to a desired skin surface. The lens has an upper surface and a lower surface with the upper surface generally adjacent to the interior of the housing. The lens further includes a plurality of generally hollow conical protrusions having upper and lower ends. The protrusions are situated on the lower surface of the lens such that when the lens is secured to the housing ultra-violet radiation is diverted outwardly through the lower ends of the protrusions.
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