High-pixel ultra-wide-angle optical system and its application camera module

Abstract

A high-pixel ultra-wide angle optical system, comprising a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), and a fifth lens (5) in sequence from an object surface to an image surface along the optical axis; for the first lens and the second lens, the object surfaces are convex surfaces, the image surfaces are concave surfaces, and the focal power is negative; for the third lens and the fourth lens, the object surfaces are convex surfaces, the image surfaces are concave surfaces, and the focal power is positive; for the fifth lens, the object surface is a concave surface, the image surface is a convex surface, and the focal power is negative; the fourth lens and the fifth lens are glued to each other to form a combined lens; the focal length f45 of the combined lens meets the following conditions: 2<f45<10, and TTL / EFL≤16.5. On the other hand, also provided is a camera module. The high-pixel ultra-wide angle optical system consists of five lenses. Since there are a few lenses, the system is simple in structure, short in total optical length, and small in size, and has good performances of large aperture, large visual angle, high pixel, extremely high athermalization and the like.

Description

Technical field: [0001] The invention relates to an optical system and a lens applied thereto, in particular to a high-pixel ultra-wide-angle optical system and a camera module applied thereto. Background technique: [0002] With the application of panoramic lens camera technology and the development and utilization of panoramic parking systems, a series of ultra-wide-angle lens products have appeared on the market: for example, the patent application with publication number CN106019540A mentions a fisheye optical lens, but the lens uses 6 The eyeglass has the defects of large number of eyeglasses and high cost. Invention content: [0003] In order to overcome the problems of a large number of lenses and high cost in existing optical systems or lenses, an embodiment of the present invention provides a high-pixel ultra-wide-angle optical system on the one hand. [0004] The high-pixel ultra-wide-angle optical system is provided in sequence along the optical axis from the o...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of large number of lenses and high cost in existing optical systems or lenses, the embodiments of the present invention provide a high-pixel ultra-wide-angle optical system on the one hand

Images