How do I Check My Window Tint VLT?

Time:2020/05/25 12:00:00 Browse:1025

Tint tester is a light transmittance measuring device used to detect the visible light transmittance, which can be used to detect the percentage of visible light transmitted through car windows. This is a compact and split-type device that is suitable for use in any occasion. For example, it can test the automotive windshield transmittance on the road. How to check window tint VLT?

There are more and more types of automobile window films. In addition to the windows that can be insulated from most ultraviolet rays and heat, some more professional car films can even play a role of anti-peeping and explosion-proof. However, the light transmittance of the window is closely related to the driver's viewing distance. Considering the safety issues of the driver and the passenger, different countries and regions have requirements for the light transmittance of the car front windshield. The instrument is also widely used in vehicle management stations and traffic police brigades and other units.

I. Why do we use tint tester to measure the car window VLT?

1. VLT value of window tint affect the driver's viewing distance

The automotive window film not only has decorative function, it can also block most ultraviolet rays and heat. It can also reduce the temperature in the car in high temperature weather. There are some more professional anti-peep films to prevent the outside from seeing the car through the window valuables. Although automotive window film has many advantages, if the light transmittance does not reach the standard, it will seriously affect the driver's viewing distance, which will seriously threaten the life safety of the passenger. 

2. Need legal guidance on window tinting laws

In China, there is a national standard for automotive window film. According to the current film standard mentioned in the "Technical Conditions for the Safety of Motor Vehicle Operation": the visible light transmittance of the front windshield window film and the glass outside the windshield used for the driver ’s visual area should be greater than or equal 70%; while in the UK, the law requires that the visible light transmittance of the automotive window film must be greater than 75%. And the visible light transmittance of the automotive window film at the driver ’s location must be greater than 70%. The specific percentage requirements depend on the country and region. The visible light transmittance measured by the tint tester (window tint meter) can provide data intuitively, so the tint meter is also a necessary light  transmittance measuring device to detect whether the VLT of the automotive window film is in compliance.

windpw tint tester
windpw tint tester

II. The application of tint tester in automotive safety testing

Automotive safety testing requires testing of all aspects of the vehicle, including the testing of window light transmission is also essential. Through the tint tester to test the window light transmittance, can effectively ensure the safety of the driver and car personnel.

First, test the window light transmission rate. According to the standards of different countries and regions, there are certain requirements for the light transmission rate of car windows. Too high or too low light transmission rate will affect the driver's vision, increasing the risk of traffic accidents, such as China's DMV on the front glass light transmission rate must be greater than 70% of the requirements. The use of automotive tint tester can quickly and accurately measure the light transmittance of the window and determine whether it meets the standard. If it does not meet the standard, the light transmission rate needs to be adjusted or the window needs to be replaced to ensure driving safety.

Second, assess the quality of auto glass. Tint testers can detect the light transmittance of car windows, and also assess the quality of auto glass. If there are cracks, bubbles or other defects in the auto glass, the transmittance meter can also detect and alert the staff in time.

Third, it improves the efficiency and quality of automobile manufacturing and repair. The use of automotive tint tester can quickly and accurately detect the light transmittance of windows, avoid human errors, and improve the efficiency and quality of manufacturing and maintenance.

Fourth, the application of automotive tint tester is not only in the safety test, but also in the automotive beauty industry. Through the detection of light transmittance meter, it can determine whether the windows need to be replaced or other treatment to achieve the purpose of beauty and maintenance.

III. How do I check the VLT of automotive window tint using a tint tester?

  1. Step 1: Use professional tint tester to test the VLT of automotive window film, or directly measure the visible light transmittance of the front and rear glass of the car.

  2. Step 2: Make sure that both the main unit and auxiliary unit of the split-type window tint meter are turned on. After the main unit displays 100% visible light transmittance, attach the main unit and auxiliary unit to the sides of the glass. Align the red laser point in the main unit and auxiliary unit.

  3. Step 3: Press the "HOLD" button on the tint tester, the measured VLT value will remain on the tint tester after taking away the sample.

  4. Step 4: Determine whether the VLT of your automotive window tint meets the standard according to the local standard.

Note: When the LS110 tint tester is turned on, it is necessary to ensure that the main and auxiliary machines are stuck together. And the red laser point is aligned with the center of the cross, so as to ensure the accuracy of subsequent test data.

LS110 tint tester
LS110 tint tester

IV. Split window tint meter

1. LS110 tint tester for vehicle administration

Light source: 380-760nm, in line with CIE photopic luminosity function
Adopt wireless split design, built-in strong suction magnet
It can measure front and rear glass, side glass, etc.
Suitable for vehicle transmittance inspection of vehicle management stations, traffic police brigades, etc.

2. LS110 tint tester working principle

  • The LS110 tint tester adopts wireless split design. And the main unit and auxiliary unit have built-in light source and receiver respectively.

  • The main unit and auxiliary unit have built-in strong suction magnets, which can be adsorbed on both sides of the glass. This tint tester can be used for light transmittance measurement in various occasions.

  • Three light sources of 380-760nm, which meets the CIE photopic luminosity function.

  • How does a tint meter work: when no test material is placed, the light intensity received by the receiver is the original light intensity; after placing the measured material between the main unit and the auxiliary unit, only part of the light intensity will pass through the material.

  • How to calculate the VLT of window tint: the light intensity through the measured material divided by the original light intensity.

  • The LS110 tint tester measures the visible light transmittance at three positions simultaneously. And the visible light transmittance finally displayed is the average of the three data.

3. Features of Linshang Technology LS110 tint tester

The LS110 tint tester for automotive uses advanced optical technology and high precision sensors to quickly and accurately measure the light transmission of various types of windows. It has these features.

  • Easy to operate. LS110 tint tester adopts a split design, which is easy to use whether testing the front glass of a car or measuring the windows on both sides.

  • Good stability. The product adopts a high-precision sensor and advanced optical technology, and the instrument uses three light sources for each measurement to take the average value, which is highly resistant to interference and can work stably.

  • Laser positioning. The function of laser positioning alignment can be used after power on, so that the instrument can be accurately positioned to ensure the accuracy of test results.

  • Easy reading. The measurement data is displayed on a large screen for clarity and can be locked, so that the data can be read even if the measurement object is moved.

  • LS110 tint tester can measure the light transmittance of various types of windows, and is suitable for various kinds of cars, such as cars, trucks, passenger cars, etc.

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