High-pixel ultra-wide angle optical system and camera module applied to high-pixel ultra-wide angle optical system

Abstract

The embodiment of the invention discloses a high-pixel ultra-wide angle optical system which is provided with a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence from an object surface to an image surface along the optical axis, wherein for the first lens and the second lens, the object surface sides are convex surfaces, the image surface sides are concave surfaces, and the focal power is negative; for the third lens and the fourth lens, the object surface sides are convex surfaces, the image surface sides are concave surfaces, and the focal power is positive; for the fifth lens, the object surface side is a concave surface, the image surface side is a convex surface, and the focal power is negative; the fourth lens and the fifth lens are glued with each other to form a combined lens; the focal length f45 of the combined lens meets the following conditions: f45 is greater than 2 and less than 10, and TTL / EFL is less than or equal to 16.5. On the other hand, the embodiment of the invention further provides a camera module. The high-pixel ultra-wide angle optical system disclosed by the embodiment of the invention consists of the five lenses; as the number of lenses is small, the system is simple in structure; the total optical length is short, and the size is small; the high-pixel ultra-wide angle optical system has good performances of large aperture, large visual angle, high pixel, extremely high athermalization and the like.

Description

[0001] Technical field: [0002] 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. [0003] Background technique: [0004] 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. [0005] Invention content: [0006] 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. [0007] The high-pixel ultra-wide-angle optical system is provided in sequence along the ...

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Problems solved by technology

[0006] 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

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