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Camera shooting lens system

A technology of camera lenses and lenses, which is applied in the field of camera lens groups, can solve problems such as inability to correct off-axis meridional aberrations and sagittal aberrations

Pending Publication Date: 2019-03-08
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the current types of terminal lenses mostly use rotationally symmetric (axisymmetric) aspheric surface structures, and they only have sufficient degrees of freedom in the meridional direction, they cannot properly correct for off-axis meridional aberrations and sagittal aberrations. Aberrations are effectively corrected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Refer to the following figure 1 with figure 2 An imaging lens group according to Embodiment 1 of the present application will be described. figure 1 A schematic structural diagram of the camera lens group according to Embodiment 1 of the present application is shown.

[0072] 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, fifth lens E5, filter E6 and imaging surface S13.

[0073] 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 negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive refractive power, its object side S5 is concave, and its image side S6 is convex. The fourth ...

Embodiment 2

[0107] Refer to the following image 3 with Figure 4 An imaging lens group according to Embodiment 2 of the present application will be described. In this embodiment and other embodiments below, for the sake of brevity, descriptions similar to those in 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.

[0108] 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, fifth lens E5, filter E6 and imaging surface S13.

[0109] 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 negative refractive power, its object side S3 is convex, and its image side S4 i...

Embodiment 3

[0126] Refer to the following Figure 5 with Image 6 An imaging lens group according to Embodiment 3 of the present application is described.

[0127] Figure 5 A schematic structural diagram of a camera lens group according to Embodiment 3 of the present application is shown.

[0128] 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, fifth lens E5, filter E6 and imaging surface S13.

[0129] 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 negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive refractive power, its object side S5 is concave, and its image side S6 is convex. The fo...

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Abstract

The invention provides a camera shooting lens system. The camera shooting lens system successively comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side along an optical axis, the first lens has positive light focal power, and the object side surface of the first lens is a convex surface; the second lens has negative light focalpower, and the image side surface of the second lens is a concave surface; the third lens has positive light focal power; the fourth lens has light focal power; the fifth lens has light focal power, and the image side surface of the fifth lens is a concave surface; at least one surface of at least one of the first lens, the second lens, the third lens, the fourth lens and the fifth lens is a non-rotational symmetric aspheric surface, and the effective focal length fx of the camera shooting lens system in the X axis direction and the effective focal length fy of the camera shooting lens systemin the Y axis direction meet the relationship that 0.5 is less than fx / fy, and fx / fy is less than 1.5.

Description

technical field [0001] The present application relates to a camera lens group, and more particularly, to a camera lens group including five lenses. Background technique [0002] Recently, with the development of miniaturized camera lenses and the popularity of large-size, high-pixel complementary metal oxide semiconductor (CMOS) or photosensitive coupling device (CCD) chips, various terminal manufacturers have proposed higher requirements. Since the current types of terminal lenses mostly use rotationally symmetric (axisymmetric) aspheric surface structures, and they only have sufficient degrees of freedom in the meridional direction, they cannot properly correct for off-axis meridional aberrations and sagittal aberrations. Aberrations are effectively corrected. Contents of the invention [0003] According to one aspect of the present application, it provides such a camera lens group, which sequentially includes a first lens, a second lens, a third lens, a fourth lens an...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045
Inventor 李阳戴付建赵烈烽贾远林徐武超
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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