What is lux meter is used to measure?

The lux (symbol: lx) is the SI derived unit of illuminance, measuring luminous flux per unit area. 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.

Which sensor is used in lux meter?

Most of the lux meters consist of a body, photocell or light sensor, and display. The light that falls on to the photocell or sensor contains energy that is converted to electric current. In turn, the amount of current depends on the light that strokes the photocell or light sensor.

What is light illuminance?

Illuminance is the quantity of light or luminous flux falling on a surface. It is measured in lumen per meter square, or lux.

What is lux testing?

Test Equipment provides a number of digital light meters, also known as a lux meter, used for measurement of light intensity or light levels in offices, schools, factories and a large range of other environments, such as photography and sporting events.

What is the difference between lux meter and light meter?

To support the previous comments, lux meters measure only the total irradiance in the visible part of the spectrum whereas a ‘light meter’ may be similar or be able to measure accross the visible and some of the UV as well depending on its construction/ optics.

What is illuminance lux?

Lux is a standardised unit of measurement of light level intensity, which is commonly referred to as “illuminance” or “illumination”. So what is exactly 1 lux? A measurement of 1 lux is equal to the illumination of a one metre square surface that is one metre away from a single candle.

What is the unit of illuminance?

lux
Illuminance (the quantity of illumination) is measured in lux, where 1 lx = 1 lm/m2. Illuminance is readily measured by a light-meter held at the point of measurement.

Is luminance and illuminance same?

Luminance describes the amount of light passing through the lightbulb, while illuminance describes the light hitting the desk. Because luminance and illuminance are quantifiable, they are not interchangeable with brightness.