Pick-up lens

Abstract

The invention discloses a pick-up lens. The pick-up lens comprises a first lens with positive focal power, a second lens with focal power, a third lens with focal power, a fourth lens with focal power, a fifth lens with focal power, a sixth lens with focal power, a seventh lens with positive focal power, and an eighth lens with negative focal power which are sequentially distributed. The total effective focal length f of the pick-up lens and the maximum half field angle Semi-FOV of the pick-up lens meet the condition that f * tan (Semi-FOV) is greater than 7.0 mm; and the refractive index N1 of the first lens and the refractive index N4 of the fourth lens meet the condition that (N4+N1) / (N4-N1) is less than 20.

Description

technical field

[0001] The present application relates to the field of optical elements, in particular, to a camera lens. Background technique

[0002] With the vigorous development of portable electronic products such as smartphones, major smartphone manufacturers have put forward higher design requirements for camera lenses mounted on smartphones. At present, most camera lenses are developing towards large image area, large aperture and high imaging quality.

[0003] However, as the application fields of portable electronic products such as smartphones become more and more extensive, when used in an environment with large temperature differences, the image quality will be reduced to varying degrees, which will reduce the reliability of the camera lens. How to make the camera lens meet the characteristics of miniaturization and large image surface, and also have strong temperature adaptability, that is, it can work normally in the environment with large temperature differe...

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