Basic principles and characteristics of Luminance meter

A luminance meter can be used in lighting engineering to measure the brightness and color temperature of light sources, allowing for better design and adjustment of lighting schemes. Manufacturers of light sources and emitters can use photometers to verify the performance of their products, ensuring that the brightness and colors meet requirements.

In film and television production, photometers can be used to measure the brightness and color accuracy of screens. This is important for adjusting color corrections and ensuring picture quality. Traffic signal lights also need to be evaluated using luminance meter to ensure their brightness and visibility meet safety requirements. LISUN XYL-VI Luminance Photoelectric Colorimeter changes the traditional structure thoroughly, employs the digital X(λ), Y(λ), Z(λ) sensors to replace the traditional analogue sensors, employs the digital signal measurement system to replace the traditional analogue measurement system. The instrument has no analogue unit, thus it is very simple to overcome the zero drift that is impossible to be avoided in traditional colorimeter. The digital sensor has a large dynamic range. Moreover, it possesses strong anti-interference ability and it has high accuracy.

XYL-VI_Luminance Colorimeter

In the field of architecture, luminance meter can be used to measure the brightness of building facades and interior lighting, allowing for better design and evaluation of lighting effects. Additionally, luminance meter can be used in atmospheric photometry research to measure the intensity and color distribution of light in the atmosphere, providing better understanding of atmospheric optical properties and the impact of atmospheric pollution. LISUN LS-ELF 2D Video Luminance Meter can record 15 frame‘s 2D luminance data per second. Also LS-ELF 2D Video Luminance Meter can record the image while driving 60-80km/h speed. It can be used in many fields as Display, Light pollution, Lighting, Lab, etc.

LS-ELF_2D Video Luminance Meter

In conclusion, luminance meter serve as essential instruments for measuring light and color in various fields. By using luminance meter, we can accurately measure the brightness and color characteristics of light sources and evaluate and adjust the effectiveness of lighting schemes. Additionally, luminance meter aid manufacturers in verifying the performance of their products, ensuring that the brightness and colors meet requirements. In areas such as film and television production, traffic signals, architecture, and atmospheric photometry, photometers play a crucial role. With ongoing technological advancements, luminance meter will continue to play a significant role in providing us with better lighting and display experiences.

The Basic Principle of a Luminance Meter

A luminance meter primarily utilizes a pair of light apertures located at a certain distance to receive a fixed solid angle and fixed light flux. This value does not vary with the distance of an object, as long as the surface area of the object is sufficiently large. In order to be able to target the object being measured, an imaging system is commonly used. The measured light source is imaged on the reflecting mirror with a hole (front aperture) through a lens. Part of it is received by the human eye through the reflecting mirror and eyepiece for targeting and monitoring, ensuring that the imaging plane is aligned with the reflecting mirror. The other part of the light passes through the small hole on the reflecting mirror and reaches the V(λ) receiver through the rear aperture. The brightness value is displayed using a pointer or numerical table. 

A luminance meter is a commonly used instrument for measuring light and color, widely applied in fields such as chemical analysis laboratories. It measures brightness by utilizing a pair of light apertures with fixed solid angles and fixed light flux to receive light flux. The basic principle is that when the surface area of an object is sufficiently large, the numerical value of received light flux is not influenced by the distance of the object. In order to target the object being measured, an imaging system is commonly used for imaging and monitoring. The brightness value is displayed using a pointer or numerical table.

What’s more, if customer from lab who required high accuracy test, LISUN KS-10 series Imaging Luminance and Colorimeter equipped with detector with a resolution of 2 million pixels to 61 million pixels, which provide excellent luminance and chromaticity test solutions.

KS-10 Imaging Luminance Colorimeter

Characteristics of a Luminance Meter:

1. Utilizes microcomputer control and data processing.
2. Utilizes interference filters as spectrometers and phototubes for photoelectric conversion.
3. Features direct reading of potassium and sodium concentrations, curve fitting, sensitivity drift, automatic calibration, and automatic adjustment of fullness. It also includes functions such as displaying operational errors and printing results.
4. Excellent linear stability and reproducibility, especially suitable for clinical applications.

Applications of Luminance meter

Luminance meter have wide-ranging applications in various fields. In lighting engineering, photometers are used to measure the brightness and color temperature of light sources in order to design and adjust lighting schemes more effectively. For manufacturers of light sources and lighting devices, photometers can be used to verify the performance of their products and ensure that their brightness and color meet requirements. In film and television production, photometers are used to measure screen brightness and color accuracy for color correction and ensuring image quality. In traffic signals, photometers ensure that the brightness and visibility of lights meet safety requirements.

In the field of architecture, Luminance meter can be used to measure the brightness of building facades and indoor lighting to better design and assess lighting effects. Additionally, photometers can also be used in atmospheric photometry studies to measure the intensity and color distribution of light in the atmosphere to better understand atmospheric optical properties and the impact of atmospheric pollution.

In summary, luminance meter play an important role in light measurement and color measurement. They can be used to measure the brightness and color characteristics of light sources and evaluate and adjust lighting schemes. At the same time, photometers can help manufacturers verify the performance of their products and ensure that their light sources meet brightness and color requirements. In fields such as film and television production, traffic signals, architecture, and atmospheric photometry, photometers also play crucial roles. With the continuous development of technology, photometers will continue to be applied in various fields, providing people with better lighting and display experiences.