Lux meters, spectrophotometers and colorimeters enable precise measurement, analysis and control of light and colour in a wide range of technical and industrial environments.
Lux meters and professional light meters: accurate illumination measurement
Lux meters, also known as professional light meters, are instruments designed to measure the amount of visible light that falls on a surface, expressed in lux (lx). Their use is essential in workplaces and industries where lighting affects safety, comfort and energy efficiency, such as offices, factories, hospitals, photographic studios and public areas.
These devices ensure that lighting levels comply with regulations and help optimise illumination performance. Thanks to their high-sensitivity sensors, modern lux meters deliver fast and accurate readings even under fluctuating light conditions. Digital models featuring data logging and computer connectivity have become indispensable tools for engineers, technicians and researchers.
A professional light meter is vital for monitoring visual conditions, preventing eye strain and maintaining a safe, productive environment. Applications include energy audits, lighting design, photographic calibration and environmental assessment.
Spectrophotometers and colorimeters: advanced light and colour analysis
While a lux meter measures the amount of incident light, a spectrophotometer analyses how light interacts with matter. It measures the light absorbed, transmitted or reflected according to wavelength, providing valuable data on the composition and optical properties of a sample. This makes it an essential tool in laboratories, quality control, chemical research and industries such as food, textiles and paints.
The colorimeter measures the chromatic properties of an object and translates visual colour perception into objective numerical values. Although simpler than a spectrophotometer, it provides fast, reliable results for assessing colour consistency and appearance. Together, these instruments give a complete understanding of how light and colour behave across different materials.
Owing to their accuracy, spectrophotometers and colorimeters ensure consistent colour quality and maintain high visual standards in industrial and scientific applications.
Types of lux meters and key features
There are various types of professional lux meters tailored to different requirements. Digital lux meters are the most common, offering high precision, backlit displays and advanced functions such as data storage and USB or Bluetooth connectivity. Remote sensor lux meters allow the light sensor to be separated from the main unit, making it easier to take measurements in hard-to-reach areas.
Analogue lux meters are valued for their robustness and simplicity, while scientific or calibrated models provide certified accuracy for laboratory and research use. All models deliver stable, consistent results with wide measurement ranges and fast response times.
Key features of quality light meters include automatic temperature compensation, configurable alarms, calibrated photometric sensors and ergonomic designs. These ensure reliable, repeatable readings in any professional setting.
Applications and maintenance of light measuring instruments
Lux meters, spectrophotometers and colorimeters are widely used across industry, science, architecture and photography. In professional environments, they ensure compliance with lighting standards, while in creative fields they guarantee faithful light and colour reproduction. In engineering and environmental contexts, they are used to assess lighting impact and improve energy efficiency.
To maintain accuracy, regular sensor calibration is recommended, along with careful cleaning using a dry, soft cloth. Devices should be protected from excessive humidity, dust and extreme temperatures, and stored in their protective case when not in use. New-generation models incorporate smart functions such as wireless data transfer and digital lighting analysis.
In conclusion, professional light meters are essential tools for achieving optimal illumination and colour control. Combined with spectrophotometers and colorimeters, they provide a complete solution for precise light and colour measurement in professional and industrial environments.
