Image pick-up camera, image capture device and electronic device

Abstract

The invention discloses an image pick-up camera, an image capture device and an electronic device. The image pick-up camera comprises a diaphragm, a first lens with positive refractive power, a secondlens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power and a fifth lens with negative refractive power which are sequentially distributed from an object side to an image side; the image side surface of the first lens is a concave surface at the optical axis of the camera and a convex surface at the circumference of the camera; the image side surface of the fourth lens is a convex surface at the optical axis; the image side surface of the fifth lens is a concave surface at the optical axis; and at least one of the object side surface and image side surface of the fifth lens has at least one inflection point. The image pick-up camera satisfies the relational expression that 1<R4 / f<1.5, wherein R4 is the curvature radiusof the image side surface of the second lens, and f is the effective focal length of the image pick-up camera. The image pick-up camera has reasonable lens configuration and meets the relational expression 1 that 1<R4 / f< 1.5, and therefore, aberration can be avoided, high-order aberration generated by the second lens can be corrected, and imaging quality is improved.

Description

technical field

[0001] The invention relates to optical imaging technology, in particular to a camera lens, an image taking device and an electronic device. Background technique

[0002] Traditionally, optical systems mounted on electronic products mainly use four-piece lens structures. However, due to the prevalence of high-standard electronic devices such as Smart Phones and Tablet PCs, the optical system has become more advanced in terms of pixels and imaging quality. With the rapid rise of the technology, the known optical system will not be able to meet the higher-order photography system. Therefore, there is an urgent need for a photographic optical system with better imaging quality. Contents of the invention

[0003] Embodiments of the present invention provide a camera lens, an image capturing device, and an electronic device.

[0004] The imaging lens according to the embodiment of the present invention includes a diaphragm, a first lens with positive refractiv...

Images