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L2 Radiometry + Photometry - Coggle Diagram
L2 Radiometry + Photometry
light characteristics
EM wave
WL + freq + radiant energy
WL = c/v, unit nm
spectrum
shorter WL higher energy
short WL damage
EMR measurement
radiometry
photometry
luminosity function V
photopic + scotopic conditions
stimuli
monochr
broadband
amt of radiant energy
spectral power/radiometry
Qe radiant energy/radiometric quantities
radiant flux Fe (watts, J/s)
radiant intensity Ie (W/steradian)
irradiance Ee (watts/m^2)
radiance Le (W/steradian/m^2)
Fe radiant flux
Fe(lambda) spectral power
Fev spectral power
transformatn from WL -> freq
transformatn from spectral power -> photon flux
spectral luminous efficiency Vlambda
luminance + radiance
luminous efficiency function
eq brightness all WL
flicker photometry
photometry
general info
luminous efficiency function
absolute + relative (add diagram)
Lλ = Km Vλ Leλ (abney's law)
luminous flux for broadband stimuli
luminous flux F
luminous intensity
illuminance E
luminance L
other
inverse square law of radio + photo
angle of incidence effect
lambertian surface
isotropic luminance
specular reflection
cosine law + luminous intensity
other ways to specify visual stimulus
luminance in eye plane
retinal illuminance
source luminance L
pupil area A
Eret = L x A (unit: troland)