Mobile phone film transmittance test

With the hot sale of touch screen 3G mobile phones, mobile phone stickers are everywhere in the streets near the mobile phone market. The light transmittance of the 10 yuan ordinary high-transparency film outer packaging is marked as 99%, and the actual light transmittance is 92.7% after being tested by a professional optical instrument-light transmittance tester. Jobs spent tens of millions of dollars, committed to making the iPhone 1 mm thinner and the screen clearer. In China, the iPhone is covered with a plastic film, which not only increases the thickness, but also makes the screen less clear. This is a joke popular on the Internet. The reason for the film is to prevent the screen from being scratched and to prevent radiation. In the streets, mobile phone film business is booming. In the mouth of the merchants, these plastic films are affixed with professional anti-scratch, anti-radiation, anti-fingerprint and other functional labels. Is a thin plastic film so magical? The experimenters bought four films from the market, and conducted light transmittance experiments with a light transmittance tester.Transmittance tester to test the transmittance of mobile phone film:
The experimenter bought four different price films from the market, and tested the light transmittance of the film using the light transmittance haze meter. For easy identification, the four films are labeled A, B, C, and D, respectively. A is a 50-pin Shengsheng matte film, B is a 50-yuan Pinsheng high-transparency film, C is a 10-yuan ordinary matte film, and D is a 10-yuan ordinary high-transparency film. Transmittance tester consists of three parts: transmitting light source system, receiving light source system, and sample holder for placing mobile phone film. After the switch is turned on, the transmitting system emits a light source, and the light source enters the receiving system through the film, and the light transmittance of the film is obtained. Place the sample A on the sample holder, turn on the power, the light is emitted by the transmitting system, and enters the receiving system after passing the sample A. After more than ten seconds, the test results showed that the transmittance of sample A was 93.2%. Subsequently, the experimenters tested the other three films according to the same method. The transmittance of B was 92.8%, C was 92.8%, and D was 92.7%. Experimental conclusion: The light transmitta