ToF sensor for smartphone autofocus application

Taking the use of ToF sensors in smartphone autofocus as an example, the previous autofocus function usually adopts a set of data calculation methods integrated in the smartphone image signal processor. After the viewfinder captures the most original image, the image data will be sent to the image signal processor as raw data, and the image signal processor will analyze the raw data, check the density difference between adjacent pixels in the image, from which Picking out the best frame of image is the photo presented in front of our eyes. The autofocus system using the ToF sensor, on the other hand, detects the distance between the object and the camera to focus, reducing the number of frames captured by the camera, and can capture images quickly and clearly even in low light. In terms of video, accurate distance measurement and image capture can be performed within two meters of movement.
The distance measurement of the future ToF sensor will increase the sensing distance, which requires the receiver to detect more photons. In addition to the structure, it also needs optical assistance. It can also capture more photons through the meniscus lens to achieve further distance. Optical ranging for distance. It will become the most basic technology to realize our future intelligent social living environment.

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