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Camera lens group

A camera lens and lens technology, which is applied in the field of camera lens groups, can solve problems such as inability to correct off-axis aberrations, and achieve the effect of image quality improvement

Pending Publication Date: 2019-04-19
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of rotationally symmetric aspheric surface can be regarded as a curve in the meridian plane rotated 360° around the optical axis, so it only has sufficient degrees of freedom in the meridian plane, and cannot correct off-axis aberrations well. make corrections

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Refer to the following figure 1 and figure 2 An imaging lens group according to Embodiment 1 of the present application will be described. FIG. 1 shows a schematic structural diagram of a camera lens group according to Embodiment 1 of the present application.

[0081] Such as figure 1 As shown, the imaging lens group according to the exemplary embodiment of the present application includes in sequence along the optical axis from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, and a fourth lens E4 , the fifth lens E5, the sixth lens E6, the filter E7 and the imaging surface S15.

[0082] The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has negative refractive power, its object side S5 is convex, and its image side S6 ...

Embodiment 2

[0117] Refer to the following image 3 and Figure 4 An imaging lens group according to Embodiment 2 of the present application will be described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. image 3 A schematic structural diagram of the camera lens group according to Embodiment 2 of the present application is shown.

[0118] Such as image 3 As shown, the imaging lens group according to the exemplary embodiment of the present application includes in sequence along the optical axis from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, and a fourth lens E4 , the fifth lens E5, the sixth lens E6, the filter E7 and the imaging surface S15.

[0119] The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive power, its object side S3 is co...

Embodiment 3

[0135] Refer to the following Figure 5 and Figure 6 An imaging lens group according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of a camera lens group according to Embodiment 3 of the present application is shown.

[0136] Such as Figure 5 As shown, the imaging lens group according to the exemplary embodiment of the present application includes in sequence along the optical axis from the object side to the image side: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, and a fourth lens E4 , the fifth lens E5, the sixth lens E6, the filter E7 and the imaging surface S15.

[0137] The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has negative refractive power, its object side S5 is convex, and its image side S...

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Abstract

The invention discloses a camera lens group. The camera lens group sequentially comprises a first lens having optical power, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side along an optical axis. The first lens has positive focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens has positive focal power; the third lens has negative focal power; at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth length and the sixth lens has a non-rotationally symmetric aspheric surface; and the effective focal length fx in the X-axis direction of the camera lens group and the effective focal length fy in the Y-axis direction of the camera lens group meet the following condition: 0.80 <fx / fy <1.20.

Description

technical field [0001] The present application relates to a camera lens group, more particularly, to a camera lens group comprising six lenses. Background technique [0002] Recently, the ultra-thin trend of mobile phones has become more and more obvious with the changes in market demand and the continuous upgrading of module technology. At the same time, not only the ultra-thin characteristics of the mobile phone lens are required, but also higher requirements for its imaging quality How to reduce the size while improving the imaging quality on the basis of the traditional structure is a major problem facing the design of mobile phone lenses recently. [0003] Most of the camera lens groups used in mobile phone rear cameras adopt a 6-piece structure, and the current user market prefers ultra-thin lenses with large apertures and small F-numbers. However, most current lens groups use rotationally symmetric (axisymmetric) aspheric surfaces for lens surfaces. This type of rot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18
Inventor 耿晓婷邢天祥吕赛锋戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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