The CIE scotopic luminous efficiency function V'(lambda) for night vision,
from CIE 018:2019 Table 2. Tabulated at 1 nm intervals from 380 nm to
780 nm, with its peak at 507 nm. Used by scotopic_lux.
Format
A data frame with 401 rows and 2 columns:
- lambda
Wavelength in standard air, in nm (380-780, step 1).
- W
V'(lambda), dimensionless sensitivity from 0 to 1.
Source
International Commission on Illumination (CIE), CIE spectral luminous efficiency for scotopic vision, DOI: doi:10.25039/CIE.DS.gr6w4b5g , licensed CC BY-SA 4.0.