Introduction and Working Principle of Lux Meters
An lux meter, also known as a lux meter, is a specialized instrument for measuring luminosity and brightness. It consists of a host and a light sensor, with a measurement range of 0-50000. The average indoor light intensity ranges from 100-1000 lux, and the outdoor sunlight intensity is approximately 50000 lux. Lux is a unit of illuminance that represents the density of light shining on a surface. Its application scenarios mainly include indoor, office, laboratory, and environmental research.
Illuminometer - Measurement Principle of Illuminometer
A photovoltaic cell is a photoelectric component that directly converts light energy into electrical energy. When light is incident on the surface of the selenium solar cell, the incident light passes through the metal thin film 4 and reaches the interface between the semiconductor selenium layer 2 and the metal thin film 4, generating a photoelectric effect at the interface. The magnitude of the generated photocurrent is proportional to the illuminance on the surface of the photovoltaic cell receiving light. At this point, if an external circuit is connected, a current will flow through, and the current value will be indicated on a microampere meter with lux (Lx) as the scale. The magnitude of photocurrent depends on the strength of the incident light. The illuminance meter has a gear shift device, so it can measure both high and low illuminance. Types of illuminance meters: 1. Visual illuminance meter: inconvenient to use, low accuracy, rarely used 2. Optoelectronic illuminance meter: commonly used selenium solar cell illuminance meter and silicon solar cell illuminance meter
