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

Claim 14:
15. An ophthalmic lens having a luminous transmittance between 1 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 500 nanometers less than or equal to 1 percent;
a mean transmittance between 520 nanometers and 550 nanometers greater than the luminous transmittance,
a mean transmittance between 600 nanometers and 650 nanometers greater than 10%;
a mean transmittance between 400 nanometers and 450 nanometers at least 4 times greater than the mean transmittance between 460 nanometers and 500 nanometers; and
a mean transmittance between 560 nanometers and 590 nanometers at least two times greater than the mean spectral transmittance between 460 nanometers and 500 nanometers.