Photographic system, image pickup device and electronic device

Abstract

The invention discloses a photographic system, an image pickup device and an electronic device. The photographic system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are distributed from an object side to an image side sequentially; the first lens has positive refractive power, and the object side surface of the first lens is a convex surface near an optic axis; the second lens has refractive power, and the image side surface of the second lens is a concave surface near the optical axis; each of the third lens, the fourth lens and the fifth lens has refractive power; the sixth lens has refractive power, the image side surface of the sixth lens is a concave surface near the optical axis, the image side surface of the sixth lens is provided with at least one convex surface at an off-axis, and the image side surface and object side surface of the sixth lens are both an aspheric surface; the seventh lens has refractive power, the object side surface of the seventh lens is a concave surface near the optic axis, and the image side surface and object side surface of the seventh lens are both an aspheric surface; no relative movement occurs among the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens on the optical axis; and an air gap is left between any two adjacent lenses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens on the optical axis. The invention also discloses a photographic system with the above image pickup device and an electronic device with the image pickup device.

Description

technical field [0001] The invention relates to a photography system, an image pickup device and an electronic device, in particular to a photography system and an image pickup device suitable for the electronic device. Background technique [0002] In recent years, with the vigorous development of miniaturized photographic lenses, the demand for miniature imaging modules has been increasing day by day, and the photosensitive elements of general photographic lenses are nothing more than charge coupled devices (CCD) or complementary metal oxide semiconductor elements. (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor) two types, and with the improvement of semiconductor process technology, the pixel size of the photosensitive element is reduced, and today's electronic products are developing with good functions and thin, light and small appearance. Therefore, , Miniaturized photographic lenses with good imaging quality have become the mainstream in the current mark...

AI Technical Summary

Problems solved by technology

[0003] In recent years, due to the rapid increase in the specifications of photographic systems mounted on electronic devices such as high-end Smart Phones (Smart Phones), Wearable Devices (Wearable Devices), and Tablet Personal Computers (Tablet Personal Computers), for cameras equipped with large apertures and large photosensitive elements As the demand for optical systems increases, the existing five-element and six-element optical systems will not be able to meet higher-level requirements

[0004] At present, although there is a development of seven-element optical system to meet the needs of high-end specifications, the number of lenses in the seven-element optical system is large, which is not conducive to the miniaturization of the optical system

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