van Norren & Vos lens density spectrum (1974)

Data key

  1. Wavelength (nm)
  2. Lens density


    Proposed adjustment to the Wyszecki & Stiles' (1967) lens density template. The adjustment was based on the correction needed to transform (1949) Crawford's mean rod spectral sensitivity curve to the rod (rhodopsin) photopigment curve.

The data from 380-440 nm are from van Norren & Vos (1974), Table 2
The data from 440-710 nm are from Wyszecki & Stiles(1982), Table 1(2.4.6)

Values for open pupil. x1.16 for small pupil.


Crawford (1949) The scotopic visibility function, Proceedings of the Physical Society, B62, 321-334.

van Norren, D. & Vos J.J. (1974) Spectral transmission of the human ocular media Vision Research, 14, 1237-1244.

Wyszecki, G., & Stiles, W. S. (1967). Color Science New York: Wiley.

Wyszecki, G., & Stiles, W. S. (1982). Color Science (2nd ed.). New York: Wiley.