A time-of-flight camera (ToF camera), also known as time-of-flight sensor (ToF sensor), is a range imaging camera system for measuring distances between the camera and the subject for each point of the image based on time-of-flight, the round trip time of an artificial light signal, as provided by a laser or an LED.

ToF (Time-of-Flight) lens represents the pinnacle of imaging technology, delivering unparalleled precision and performance across various industries. With ToF lens, you can achieve ultra-fast depth sensing and 3D imaging, making significant strides in industrial automation, intelligent security, augmented reality, and more.

This is an important optical component which enables cameras, including 3D time-of-flight (ToF) cameras, to work. 3D ToF cameras have certain distinct characteristics which have special requirements to be met with while selecting or designing the lenses. This document explains how to decide the specifications for 3D ToF cameras.

Optics plays a key role in time of flight (ToF) depth sensing cameras, and the optical design dictates the complexity and feasibility of the final system and its performance. 3D ToF cameras have certain distinct characteristics1 that drive special optics requirements.

ToF stands for Time-of-Flight. As such, a ToF camera, also known as a 3D depth lens, is built to capture an unprecedented level of depth and detail. It is also a type of LIDAR (light detection and ranging) lens. Comparatively, a ToF lens is scannerless, while a LIDAR possesses a distinct scanning feature.

ToF-cameras illuminate a scene with a modulated signal, and the phase shift between the send and receive signal determines the depth ranging. LiDAR stands for Light-Detection-and-Ranging and uses the delay between send and receive of a single laser pulse to determine depth.

ToF or Time-of-Flight refers to a measurement principle based on a signal leaving a source and a detector measuring the time it takes for a detector to receive the same signal back. The distance to any given object can be determined by factoring in the speed of the signal itself.

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TOF, short for Time of Flight, refers to the method of measuring distance by calculating the time light takes to travel a certain distance in a medium. Predominantly applied in optical TOF scenarios, its principle is relatively straightforward.

ToF lenses can calculate the distance between an object and the lens by firing a laser or infrared beam and measuring the time it takes for them to return. Therefore, ToF lenses have also become an ideal choice for people to carry out 3D scanning, tracking and positioning.