What causes double vision when looking at lights at night after applying film to a new car?
2 Answers
It may be due to issues with the film. According to national regulations, the front windshield film must have a light transmittance of over 70%, so it should not affect visibility. Below are the specific functions of applying film to the front windshield of a car: 1. Effectively protects the equipment inside the car: If the car has many electronic devices, such as a GPS navigator, direct sunlight can cause damage to these products. 2. Protects the front windshield from damage by stones: The film has anti-glare properties, enhancing safety. 3. Effectively blocks UV rays: UV radiation can harm human skin. During long car rides, when the body is mostly stationary, it is more susceptible to UV damage, leading to skin diseases.
On the first night driving after getting my new car tinted, I was completely confused—all the streetlights appeared double! The tint shop owner said this was most likely due to the film not being applied tightly enough, with tiny air bubbles or dust particles between the glass and film causing light refraction and ghosting. Especially with high-metal-content films, uneven metal layers can more easily lead to glare. He advised observing for a week: if rainbow patterns or small bubbles appear at the window edges under sunlight, it indicates a workmanship flaw. After I went back to have the edge bubbles flattened, the lights at night became noticeably clearer. Remember not to roll down the windows for 7 days after application, otherwise, the film edges lifting can also cause light distortion. If you notice ghosting at night, address it immediately—it's too dangerous for driving!
