Cheapest Brightness meter is a measuring instrument for photometry and color measurement. Cheapest Brightness meter is one of the common instruments and equipment necessary for every chemical analysis laboratory, and it has been widely used in various quantitative and qualitative analysis. So do you know the principle of Cheapest Brightness meter? Let's take a look at it briefly!
Cheapest Brightness meter mainly uses a pair of light holes with a certain distance to receive the luminous flux with a fixed solid angle and a fixed projection area. This value does not change with the distance of the object, as long as the surface area of the object is large enough. In order to aim at the measured object, an imaging system is often used. The light source to be tested is imaged on the mirror with a hole (front light hole) after passing through the objective lens, and a part of it is received by the human eye through the mirror and eyepiece to aim and monitor the coincidence of the clear imaging surface with the mirror with the hole; the other part of the light is Go through the small hole on the reflector and reach the V(λ) receiver through the rear light hole. The brightness value is displayed by pointer or digital meter.
In summary, it is a brief introduction to the principles and knowledge of Cheapest Brightness meter.