What is lux meter and how does it operate? - Quora.

The lux measurement procedure simply requires positioning a meter’s sensor on the surface or location where you wish to measure the incident light. The sensor should face the light source at a right angle. If the sensor is not perpendicular to the light, the measurement will be incorrect, though some lux meters have a cosine correction to.

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Luxmeter a portable instrument for measuring illumination; a type of photometer. The simplest luxmeter consists of a selenium photocell that converts luminous energy into the energy of an electric current, which is measured by a pointer-type microammeter with scales calibrated in luxes (Ix). Different scales correspond to different ranges of the.

Lux meters should fulfil specific criteria in order to be able to measure the light intensity and light conditions reliably and precisely: Sensor type: The type of sensor is important when it comes to a lux meter, because it has to perceive ambient light in a way that corresponds to the human eye.

The lux (symbol: lx) is the SI derived unit of illuminance, measuring luminous flux per unit area. (1) (2) It is equal to one lumen per square metre. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface.

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