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

Claim 5:
6. The ophthalmic lens of claim 1 wherein the lens has spatially varying spectral transmittance such that in a non-central region outside of the optical center of the lens the luminous transmittance of the lens is between 40 percent and 60 percent and in the non-central region the spectral transmittance has the following properties:
the maximum spectral transmittance between 460 nanometers and 510 nanometers is less than 50 percent of the luminous transmittance;
the minimum spectral transmittance between 550 nanometers and 700 nanometers is greater than 60 percent; and
the mean transmittance between 400 nanometers and 450 nanometers is at least 4 times greater than the mean transmittance between 460 nanometers and 500 nanometers.