Application Scope and Solutions of Lux Meters
Illuminance meter type:
1. Visual lux meter: inconvenient to use, low accuracy, rarely used
2. Optoelectronic lux meter: commonly used selenium photovoltaic cell lux meter and silicon photovoltaic cell lux meter
Scope of application of illuminance meter:
1. Application in general public places
In order to ensure that people can live under suitable lighting conditions, China has formulated hygiene standards for indoor (including public places) illuminance, and uses illuminance meters to measure illuminance in various places.
2. Lighting production industry, photography industry, stage lighting layout, etc
Illuminance meters have been successfully applied to multiple solutions, such as the lighting industry, photography industry, stage lighting layout, etc. Different models of illuminance meters can meet different measurement requirements.
3. Application of factory production line
In factories, the lighting requirements on production lines are relatively strict. Continuous work can cause visual fatigue and greatly reduce work efficiency. Usually, the illuminance requirement is ≥ 1000Lx. For places with high lighting requirements, a large range of illuminance meters can be selected, which can cope with strong light illuminance measurement.
4. The application of illuminance meters is very extensive, including applications in our daily lives such as factories, warehouses, schools, offices, homes, streetlight construction, laboratories, and so on.
Measurement principle of illuminance meter
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.
