| 摘要 |
<p>A photoluminescent material is provided comprising a plurality of nanocrystals, such as quantum dots or Cornell dots, each capable of absorbing electromagnetic energy at a first wavelength and emitting the absorbed energy as a desired or selected wavelength in the direction of a human retina. Preferably, the emitted wavelength is chosen for its ability to suppress naturally occurring melatonin. The photoluminescent material may be placed over at least a portion of a lens to optimize exposure to the desired wavelength while reducing the overall luminescence. The photoluminescent material can be applied as a coating, as part of a material applied to the lens, either superficially or within the lens, as part of eyewear, or even as an optical treatment system. Also, a filter material may be applied to the lens to attenuate at least a portion of the selected wavelength emitted in the direction of the retina.</p> |
