Patent ID: 11940675
Assignee: ENCHROMA, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An ophthalmic lens having a luminous transmittance between 60 percent and 85 percent, where the luminous transmittance is the weighted photopic transmittance of CIE Standard Illuminant D65 according to the CIE 1931 2-degree Standard Observer, the ophthalmic lens having a spectral transmittance curve comprising:
a maximum spectral transmittance between 460 nanometers and 510 nanometers less than 50 percent of the luminous transmittance;
a minimum spectral transmittance between 460 nanometers and 500 nanometers less than or equal to 1 percent;
a minimum spectral transmittance between 550 nanometers and 700 nanometers greater than 60 percent; and
a mean transmittance between 400 nanometers and 450 nanometers at least 4 times greater than a mean transmittance between 460 nanometers and 500 nanometers.