Once when he was driving home through a mountain road at night, he was caught in a fog and couldn't see the road ahead clearly. He saw two bright things, and he was disturbed by this light. He opened his eyes wide and found it was a lovely kitten. On the way back, he was thinking about how to avoid this dangerous bend, but it was unrealistic to install all the lights and the effect was not good. So he thought of the light from the cat's eye, which he thought could reflect light. After returning home, he asked the cat to study it. He found that the cat's eye is a very smooth sphere, which can reflect light. It also knows this principle, so he found a glass to replace the cat's eye. 1933, he invented the cat's eye and then filed a patent application. Don't worry about the light when driving during the day, but driving at night will be more troublesome. The original cat's eye is used to reflect light on the road, which is beneficial to distinguish the road when it is foggy and dark at night.
Later applied to the door. For safety, people inside the house can see people outside the door, but they can't see inside. It consists of a concave lens and a convex lens. With the knowledge of physics, people inside can clearly see the situation outside the door.
Cat's eye was invented to illuminate drivers at night, reduce traffic accidents and ensure the safety of pedestrians and drivers. According to this principle, the present door mirror is made, but in fact, it is a small optical instrument installed on the door of a house, with clear sight and clear image, which plays a certain role in theft prevention and family safety for residents to observe outdoor conditions and safety.