The spectrophotometric data for one thickness of a glass is sufficient for calculating these data for any other thickness by a method here described, using either an ordinary slide rule or a special table. Calculation is made of the thickness required of two special glasses used in combination, one yellow, the other a new type of blue green, for correcting the spectral response of a photronic cell to the spectral luminosity response of the eye.
H. P. GAGE, "Glass Color Filters for Special Applications," J. Opt. Soc. Am. 27, 159-164 (1937)