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Optical Imaging Lens

An optical imaging lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problem of unclear shooting of detailed images of optical imaging lenses

Active Publication Date: 2022-06-21
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an optical imaging lens to solve the problem that the detailed image of the optical imaging lens in the prior art is unclear

Method used

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Examples

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Embodiment 1

[0059] like Figure 1 to Figure 30 As shown, from the object side of the optical imaging lens to the image side of the optical imaging lens along the optical axis sequentially includes a flat glass, a first lens, a second lens, a third lens and a fourth lens; the image side of the first lens is concave; The fourth lens has a negative refractive power; wherein, Semi-FOV, which is half of the maximum angle of view of the optical imaging lens, satisfies: Semi-FOV>40°; the effective focal length f1 of the first lens and the combination of the second lens and the third lens The focal length f23 satisfies: -1.0<f23 / f1<-0.5.

[0060] By arranging the flat glass on the object side of the first lens, the flat glass can protect the rear lens, and at the same time, the image side of the first lens is set as a concave surface, and the fourth lens is set as a negative refractive power, which can maintain the light On the premise of good convergence, the optical imaging lens can shoot more...

Embodiment 2

[0078] like Figure 1 to Figure 30 As shown, along the optical axis from the object side of the optical imaging lens to the image side of the optical imaging lens, it sequentially includes a flat glass; a first lens, a second lens; a third lens and a fourth lens, and the image side of the first lens is concave; The fourth lens has a negative refractive power; wherein, Semi-FOV, which is half of the maximum angle of view of the optical imaging lens, satisfies: Semi-FOV>40°; the air interval T12 between the first lens and the second lens on the optical axis is the same as the optical axis. When the imaging lens is in the minimum object distance state, the distance BFL1 between the image side surface of the fourth lens and the imaging surface of the optical imaging lens on the optical axis satisfies: 0<T12 / BFL1<1.0.

[0079] By arranging flat glass on the object side of the first lens, the flat glass can protect the rear lens, at the same time, the image side of the first lens is...

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Abstract

The invention provides an optical imaging lens. Along the optical axis, from the object side of the optical imaging lens to the image side of the optical imaging lens, it includes: flat glass; the first lens, the image side of the first lens is concave; the second lens; the third lens; the fourth lens has a negative light Focal power; wherein, half of the Semi-FOV of the maximum field of view of the optical imaging lens satisfies: Semi-FOV>40°; between the effective focal length f1 of the first lens and the combined focal length f23 of the second lens and the third lens: -1.0

Description

technical field [0001] The present invention relates to the technical field of optical imaging equipment, and in particular, to an optical imaging lens. Background technique [0002] With the popular use of mobile phones, the application of mobile phones has developed rapidly, and users have higher and higher requirements for mobile phone cameras, and users' needs for mobile phones are no longer limited to some single shooting functions. When taking a picture, when the lens is very close to the object, it is impossible to take a clear picture. Therefore, in the prior art, it is difficult to take a detailed picture with a mobile phone camera. [0003] That is to say, the optical imaging lens in the prior art has the problem that the detail image is not clearly captured. SUMMARY OF THE INVENTION [0004] The main purpose of the present invention is to provide an optical imaging lens, so as to solve the problem of unclear detail pictures in the optical imaging lens in the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/004G02B13/0055G02B13/06G02B13/18
Inventor 崔甲臣黄林戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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