Photometry services

Photometric tests
Photometric tests make it possible to determine 8-10 (and their most accurate varieties - 13 or more) of the most important characteristics of a light source, which can be various lamps for domestic and industrial-commercial purposes. With the help of a goniophotometer (a device for accurately measuring the propagation of photons from a light source) and a specialized sphere, scientists are able to establish, in particular, the most important luminaire parameters for the consumer:

luminous flux power - how brightly the source will shine;
color rendering index - how reliably the colors of objects will be read in the light of the source being tested (the parameter is especially important for artists and designers);
color temperature - measured in Kelvin and means how close the source light will be close to a cold blue or warm yellow tint;
electrical parameters: power, current, voltage, energy class, etc.
For professionals, it will also be especially important to create IES files during source tests necessary for 3D modeling and lighting calculations.

List of measurements
Luminous flux of the lamp, Lm;
Correlated color temperature, K;
Radiation color coordinates (x, y), units;
Color rendering index (Ra), units;
Spectral distribution of radiation (range 380 - 800 nm);
Recession and stabilization time of the luminous flux, Lm/min;
Electrical measurements (current, A; voltage, V; power, W; power factor, units);
Diagram of the distribution of light intensity in 2 planes of space;
Formation of IES - file;
Irregularity of the brightness of the radiation of the light device, units;
Luminous efficiency, Lm/W;

Lighting studies are mandatory for any lighting devices that will be used in industrial facilities and in everyday life. In addition to the basic electrical and lighting characteristics, they allow you to set the degree of safety and security of devices for specific operating conditions. For example, if the lamp is supposed to be used outdoors, then it must be protected according to the International Protection (IP) standard - its body must be protected from dust and moisture (the level of moisture protection is characterized by numbers: from the worst protection - 1 to the most reliable - 9).

Additional tests, such as those given in the example above, are necessarily required for specialized light sources as well. As a rule, they are used in mines, quarries, factories and hazardous industries. Depending on the type and class of such a device, its stability is tested under conditions of high constant and especially high short-term pressure (imitation of flooding and explosion), as well as long-term operation in offline mode (for emergency lamps that must work in the event of a power outage)

For the manufacturer, lighting tests are also important because of the documentary confirmation of the properties of the lamp or luminaire that are important for the consumer. For example, photographers are looking for LED lamps with the most accurate color reproduction, and for some, the glow of a bedroom lamp in the warm range plays a decisive role, because such light is most conducive to sleep. And for a lighting designer, IES files (data on the volumetric distribution of light from a source in digital format) of a particular lamp are needed, without which he will not be able to use it in his 3D model.

All this can only be determined during tests with precise and expensive equipment - a light measuring sphere and a goniophotometer. In addition to the equipment, you will need teams of lighting scientists who know how to use it and take measurements correctly, documenting their results. Of course, all this costs a lot of money, so it is much more rational to pass lighting tests in our laboratory, where there is a new necessary equipment and a team that specializes exclusively in testing lighting fixtures.