Optics: measuring and testing – Lens or reflective image former testing – For optical transfer function
Patent
1998-03-26
1999-09-07
Pham, Hoa Q.
Optics: measuring and testing
Lens or reflective image former testing
For optical transfer function
351 44, G01B 900
Patent
active
059495359
ABSTRACT:
The present invention is a method of rating eyewear according to their solar radiation protective capabilities. Measured ultraviolet (UV), blue light (BLUE), and reflective and blocking properties (STYLE) of eyewear are transformed into a substantially linear numerical value. The ultraviolet and blue light values provide information about the absorptive properties of eyewear lenses. The UV and BLUE values provide information about the absorptive properties of the lenses while style provides information about the light blocking properties of the frames. These values are then placed upon rated eyewear, thus allowing consumers the ability to make more informed decisions when shopping for protective eyewear.
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