Light meter
Light meters measure the illuminance and light intensity of various light sources. They are essential tools for quantitative light measurement in research and technology.
Product
Light meter
Light meters measure the illuminance and light intensity of various light sources. They are essential tools for quantitative light measurement in research and technology.
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Milian SA
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Guide and selection support
Light meters are used for precise detection of illuminance and light intensity and are utilized in laboratories, photometry, and technical light measurement.
Key factors in selection include measurement accuracy, measurement range, sensor type, and handling. Application requires detailed knowledge of lighting conditions and measurement principles, depending on usage.
LabFinder provides a clear overview of product variants and technical features so purchasers can find suitable light meters for specialized requirements.
Application and Benefits
Light meters are used for the quantitative measurement of light intensity and illuminance (lux) from different light sources. In laboratories, technical facilities, or light measurement technology, they enable the determination of standardized and comparable light values. This supports both the optimization of systems and research and development in a wide range of technical environments.
Selection Criteria
Key criteria when selecting a light meter include the measurement range in lux, required accuracy, type of sensor (e.g. photodiode or photocell), and ease of use. Depending on the application, portable handheld devices or stationary systems may be relevant. Compatibility with existing measurement systems and reliable calibration are also important.
Variants and Measurement Principles
Light meters generally operate with photoelectric sensors that convert light into an electrical signal. Variants include lux meters, illuminance meters, and light detectors, which differ in design, accuracy, and sensor size. Some models also allow measurement of various light types (e.g. daylight, artificial light).
Calibration and Maintenance
Regular calibration is essential for reliable measurement results. Calibration intervals depend on frequency of use and accuracy requirements. Maintenance usually involves cleaning the optics and checking sensor functionality.
Limitations of Application
Light meters measure light intensity but not spectral properties or color temperature. Their accuracy can be influenced by strong ambient light or reflections. For specialized light measurements, additional instruments may be required.
Search Terms and Related Concepts
Synonyms and related terms include lux meter, illuminance meter, luxmeter, light meter, illuminance measuring device, light detector, photocell, and light measuring instrument. Search can be refined with terms such as light intensity, illuminance, photometry, and lux.
Also known as
exposure detector
illuminance measuring device
illuminance meter
illumination meter
light detector
light intensity meter
light measuring instrument
lux meter
luxmeter
photocell
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Frequently asked questions
How does a light meter work?
A light meter uses a light-sensitive sensor, usually a photodiode or photocell, which converts the intensity of incoming light into an electrical signal to measure illuminance.
What types of light meters are there?
There are mainly portable lux meters for mobile measurements and stationary illuminance measurement devices. Variants also differ by sensor type and measurement accuracy.
What criteria are important when selecting a light meter?
Key factors include measurement range, accuracy, sensor type, ease of use, calibratability, and suitability for the possible light spectrum in the application.
Can a light meter determine color temperature or light color?
No, standard light meters only record light intensity or illuminance, not spectral information or color temperature.
How often should light meters be calibrated?
Calibration intervals depend on the intended use, but typically occur annually or after predefined measurement cycles to ensure accuracy.
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