Camera shooting lens group

Abstract

The application discloses a camera shooting lens group which comprises a first lens, a second lens, a second lens and a fourth lens that are orderly arranged from an object side to an image side along an optical axis. Object side faces of the first lens and the second lens are convex faces; an image side face of the third lens is a convex face, an image side face of the fourth lens is a concaved face, both of the first lens and the third lens have positive focal power, the second lens and the fourth lens have positive focal power or negative focal power, and total effective focal length f of the camera shooting lens group and an entrance pupil diameter EPD of the camera shooting lens group satisfy the condition of f / EPD<1.5.

Description

technical field

[0001] The present application relates to an imaging lens group, and more specifically, the present application relates to a large-aperture, high-brightness imaging lens group comprising four lenses. Background technique

[0002] With the improvement of performance and size reduction of commonly used photosensitive elements such as photosensitive coupling device (CCD) or complementary metal oxide semiconductor device (CMOS), higher imaging quality and miniaturization of the matching optical imaging system are proposed. requirements.

[0003] In order to meet the requirements of miniaturization, the aperture number Fno (the total effective focal length of the lens / the entrance pupil diameter of the lens) of the existing imaging lens group is usually configured at 2.0 or more, so as to have good optical performance while realizing miniaturization . However, with the continuous development of portable electronic products such as smart phones, higher requiremen...

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