Transmittance tester used to test the performance of car film

Some main performance indicators of automobile heat insulation film: Visible light transmittance: Referred to as light transmittance, it is used to measure the percentage of visible light passing through the glass. The front barrier is generally more than 70%, and the side rear barrier is generally 5%-60%. The worse the ability, the darker the relative film color. UV rejection rate: high-quality automotive film, this index is generally not less than 98%, the highest can reach 100%. The high ultraviolet blocking rate can effectively prevent people in the car from being irradiated by excessive ultraviolet rays and burning the skin. Many inferior membranes do not have this index, or are far below the 98% standard. Infrared rejection rate: Infrared is also a part of sunlight. Most of the heat of light is transmitted through infrared. Compared with automotive glass films, the higher the percentage, the better the thermal insulation effect. Total thermal insulation rate: The total thermal insulation rate of professional thermal insulation film can generally reach 40%-79%. It is a value synthesized by various indicators of the glass film. Some merchants usually confuse the concept and often use the concept of "infrared barrier rate" to pretend to be "insulation rate". This is not correct. Visible light reflectance: Unlike visible light transmittance, higher reflectance will directly reflect the irradiated light back, similar to a mirror. The higher the reflectivity, the stronger the privacy of the glass film and the better the heat insulation.
Transmittance tester is a professional instrument used to test the visible light transmittance, IR rejection rate and UV rejection rate.