Ultra wide angle low distortion large aperture lens based on time-of-flight imaging application

Patent number: CN219625800U

Patent number: CN116299993A

Time of Flight (TOF) imaging technology is a distance measurement based imaging method that calculates the distance information of an object by sending and receiving light pulses, measuring the time it takes for the object to reflect back and reach the receiver. TOF imaging technology has broad application prospects in fields such as unmanned driving, robot navigation, and LiDAR. The development plan of ultra wide angle bottom distortion large aperture lenses can be applied in TOF imaging systems to improve imaging quality and system performance.

● Optical design

Conduct optical design based on the characteristics and requirements of TOF imaging systems. Considering the requirements of ultra wide angle and large aperture, special types of lenses such as aspherical lenses and free form curved lenses are adopted to meet the needs of distortion correction and beam transmission. At the same time, it is necessary to optimize the optical system to achieve high-quality images and lower distortion.

● Distortion correction

Ultra wide angle lenses are prone to distortion, and distortion correction techniques are used to reduce distortion. Using optical distortion correction methods, the network's correction is superior to the 11 algorithm. Meanwhile, image processing methods can be combined to further correct distortions.

● Large aperture design

A large aperture lens can improve the contrast and depth of images, which is beneficial for improving the performance of TOF imaging systems. In the design process, balance the relationship between aperture size and lens distortion, size, and cost. Adopting multi-layer anti reflective coating technology to improve the transmittance of the lens and reduce light loss.

● Structural design

In response to the requirements of the time-of-flight imaging system, structural design of the lens is carried out, including material selection, mechanical processing, and assembly. Ensure the stability and reliability of the lens structure, while considering factors such as thermal expansion and contraction.

● Performance testing and optimization

Conduct performance testing on the developed ultra wide angle bottom distortion large aperture lens, including imaging quality, distortion, beam transmission, and other indicators. Based on the test results, optimize the optical design to achieve better performance.