Photometry Flashcards by Abbey Mayer

Q

Luminous flux (F)

A

lumen

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Q

Luminous intensity (I)

A

Flux/solid angle

Candela

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Q

Illuminance (E)

A

Flux incident/Area

Lux

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Q

Solid angle (w)

A

steradian

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Q

Luminance (L)

A

Intensity/projected area

nit

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Q

Luminous exitance (X)

A

Flux out/area

lux

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Q

Reflectance or transmittance (p or t)

A

exitance/illuminance

no units

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Q

Retinal illuminance (Et)

A

Lo*Aent

td

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