LensTransmittance

Psychtoolbox › PsychColorimetricData

[lensTransmit,lensDensity] = LensTransmittance(S,[species],[source],[ageInYears],[pupilDiameterMM])

Return an estimate of the transmittance of the lens.

Allowable species:
Human (Default)

Allowable sources:
StockmanSharpe (Default) - Stockman, Sharpe, & Fach (1999).
CIE - Formula from CIE 170-1:2006.
WyszeckiStiles - W&S, Table 1(2.4.6), p. 109. First data set in table.
None - Unity transmittance.

The answer is returned in a row vector. This function
depends on data contained in directory
PsychColorimetricData:PsychColorimetricMatFiles.

The CIE source will take age in years and pupil size in mm.
The default age is 32. The acceptable range is 20-80.
The default pupil size is 3 mm. Sizes less than 3 are treated
as 3. Sizes greater than 7 are treated as 7. The interpolation
between 3 and 7 doesn't appear to be part of the standard but
I coded it in anyway.


7/8/03 dhb Made this a separate function.
7/11/03 dhb Species arg, change name.
7/23/03 dhb Add Stockman estimate.
7/26/03 dhb Extend functions, rather than zero truncate.
8/12/11 dhb Start to write CIE version. Return lensDensity too.
8/13/11 dhb Linearly extrapolate read functions outside of range.