How to Ensure That A ToF Lens Works Stably in Strong Light?
The principle of Time-of-Flight (ToF) is to calculate distance by emitting infrared light and measuring its round-trip time. Strong light (such as direct sunlight, spotlights, etc.) will generate a lot of background light, which will interfere with the echo signal of the emitted light and cause the ranging to fail. For example, strong sunlight contains abundant near-infrared components, which can enter the receiver of a ToF sensor as background noise. This may drown out the weak modulated light signal reflected back from the target, leading to a decrease in the signal-to-noise ratio (SNR), thereby causing measurement errors, data jumps, or even failure. To ensure that ToF lenses work stably in strong light environments, a multi-layered and multi-dimensional comprehensive protection strategy is needed. The core ideas are noise suppression, signal enhancement, and dynamic adaptation to the environment. Let's take a look at the core processing methods: 1. Strong light suppression at ...