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

Claim 19:
20. An ophthalmic lens having a luminous transmittance between 8 percent and 40 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 mean spectral transmittance between 460 nanometers and 510 nanometers less than percent;
a mean transmittance between 520 nanometers and 540 nanometers greater than the luminous transmittance,
a mean transmittance between 600 nanometers and 700 nanometers greater than the luminous transmittance; and
a mean transmittance between 400 nanometers and 450 nanometers at least 4 times greater than the mean transmittance between 460 nanometers and 510 nanometers.