irradianceWattsPerUm2 = RadianceToRetIrradiance(radianceWattsPerM2Sr,radianceS,pupilAreaMm2,eyeLengthMm)
Perform the geometric calculations necessary to convert a measurement of source
radiance to corresponding retinal irradiance.
Input radianceWattsPerM2Sr should be in units of power/m^2-sr-wlinterval.
Input radianceS gives the wavelength sampling information.
Input pupilAreaMm2 should be in units of mm^2.
Input eyeLengthMm should be the length of the eye in mm.
Output irradianceWattsPerUm2 is in units of power/um^2-wlinterval.
Light power may be expressed in watts or quanta-sec or in your
favorite units. Indeed, it may also be passed as energy rather
This conversion does not take absorption in the eye into account,
as this is more conveniently foldeded into the spectral absorptance.
Note: This routine is now obsolete, as it mixes radiometric and unit conversions. Preferred is to
use RadianceAndPupilAreaEyeLengthToRetIrradiance and then take charge of your units in your
7/10/03 dhb Wrote it.
11/06/03 dhb Fixed comments about units, as per Lu Yin email.
3/29/12 dhb Comment on output units was wrong. It said power/um^2-sec-wlinterval
but the ‘sec’ part makes no sense given the ‘power’ in the numerator.
2/28/13 dhb Make units clear in variable names.
3/6/13 dhb Rewrite to use new conversion function. Move to Obsolete directory.
dhb Also improved variable naming.