Sensitivity: Difference between revisions

Revision as of 17:13, 28 March 2023

In an image intensifier, the photocathode sensitivity, measures the efficiency of the photocathode at converting incoming light into electrons.

There are two different measurements of photocathode sensitivity, luminous transmission sensitivity and radiant sensitivity.

Photocathodes have a spectral response, which means that their sensitivity differs depending on the spectrum of the light.

Luminous transmission sensitivity is measured in microamperes per lumen ( $\mathrm {\mu A} /\mathrm {lm}$ ).

Photocathode radiant sensitivity is measured in milliamperes per watt ( $\mathrm {mA} /\mathrm {W}$ ).

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-In an [[Image Intensifier|image intensifier]], the photocathode sensitivity measures the efficiency of the photocathode at converting incoming light into electrons.
+In an [[Image Intensifier|image intensifier]], the photocathode sensitivity, measures the efficiency of the photocathode at converting incoming light into electrons.
-Sensitivity is usually measured in microamperes per lumen (<math>\mathrm{\mu A} / \mathrm{lm}</math>).
+There are two different measurements of photocathode sensitivity, luminous transmission sensitivity and radiant sensitivity.
+Photocathodes have a spectral response, which means that their sensitivity differs depending on the spectrum of the light.
+== Luminous Transmission Sensitivity ==
+Luminous transmission sensitivity is measured in microamperes per lumen (<math>\mathrm{\mu A} / \mathrm{lm}</math>).
+== Radiant Sensitivity ==
+Photocathode radiant sensitivity is measured in milliamperes per watt (<math>\mathrm{mA} / \mathrm{W}</math>).