Spherical panoramic ring optical system with ultra-large view field

Abstract

The invention discloses a spherical panoramic ring optical system with an ultra-large view field. The spherical panoramic ring optical system comprises a panoramic ring head lens, a subsequent lens group and a sensor, wherein the panoramic ring head lens is coaxially mounted; the subsequent lens group is arranged behind the panoramic ring head lens; the panoramic ring head lens comprises PAL1 andPAL2 which are sequentially arranged from an object side to an image side; the subsequent lens group comprises RL1, RL2, RL3, RL4, RL5, RL6 and RL7 which are sequentially arranged from the object sideto the image side; the PAL1 and the RL1 are crescent glass lenses with positive focal power; the PAL2, the RL3, the RL4, the RL5 and the RL6 are biconvex lenses with positive focal power; the RL2 andthe RL7 are biconcave lenses with negative focal power; the convex surface of the PAL1 faces the object side, and the concave surface of the PAL1 faces the image side; the concave surface of the RL1faces the object side, and the convex surface of the RL1 faces the image side; all lenses are made of spherical glass. By adopting the panoramic ring optical system disclosed by the invention, one-time staring imaging of the ultra-large view field (55-120 degrees) * 360 degrees can be achieved on a limited image plane on the premise that all the lenses are spherical.

Description

technical field [0001] The invention relates to the field of visual sensors, including video conferencing, vehicle-mounted systems, etc., and particularly relates to a super-large field of view panoramic annular optical system. Background technique [0002] The panoramic ring imaging system needs to complete the geometric transformation imaging of the objects in the super large field of view to the image sensor with a limited image surface at one time. When the demand for the field of view is too large, the design difficulty of the panoramic ring will increase. In the past, Aspheric lenses are often added in the design to improve the image quality of a large field of view, but the processing of aspheric glass is more difficult, and if optical plastics are used, the image quality will be unstable in extreme environments. [0003] With the development of computer vision and artificial intelligence, developers have put forward more subdivided and clear requirements for optical ...

AI Technical Summary

Problems solved by technology

The panoramic ring improves the imaging quality of the large field of view through the design of catadioptric reflection, but when the field of view is greater than 90°, the difficulty of increasing the field of view will gradually increase

Images