Eyewear with chroma enhancement

摘要

Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in a plurality of spectral bands. Each of the plurality of spectral bands can include an absorptance peak with a spectral bandwidth, a maximum absorptance, and an integrated absorptance peak area within the spectral bandwidth. An attenuation factor obtained by dividing the integrated absorptance peak area within the spectral bandwidth by the spectral bandwidth of the absorptance peak can be greater than or equal to about 0.8 for the absorptance peak in each of the plurality of spectral bands.

主权项

1. A lens comprising:
a lens body; and an optical filter configured to attenuate visible light in a plurality of spectral bands, each of the plurality of spectral bands comprising an absorptance peak with a spectral bandwidth, a maximum absorptance, a center wavelength located at a midpoint of the spectral bandwidth, and an integrated absorptance peak area within the spectral bandwidth, the spectral bandwidth being equal to the full width of the absorptance peak at 80% of the maximum absorptance of the absorptance peak; wherein the optical filter comprises a blue light absorptance peak; wherein the center wavelength of the blue light absorptance peak is between about 445 nm and about 480 nm; wherein an attenuation factor of the blue light absorptance peak is greater than or equal to about 0.8 and less than 1; and wherein the attenuation factor of an absorptance peak is obtained by dividing the integrated absorptance peak area within the spectral bandwidth by the spectral bandwidth of the absorptance peak.