Camera lens group

A camera lens and lens technology, applied in optical components, optics, instruments, etc., can solve the problems of unsatisfactory optical total length, unable to meet the thinning requirements of portable electronic products such as smart phones, etc., and achieve high imaging quality and large aperture. , the effect of good machinability

Pending Publication Date: 2018-01-30
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the eight-chip optical imaging system can effectively correct aberrations for a large amount of incoming light, but due to the large number of lenses,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Refer to the following Figure 1 to Figure 2DAn imaging lens group according to Embodiment 1 of the present application will be described. figure 1 A schematic structural diagram of an imaging lens group according to Embodiment 1 of the present application is shown.

[0081] Such as figure 1 As shown, the imaging lens group according to the exemplary embodiment of the present application includes in sequence from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8 and imaging surface S17.

[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 negative refractive power, its object side S3 is convex, and its image side S4 is concave; the third lens E3 has Positive refractive power, the object side S5 is concave, and the image side S6 is co...

Embodiment 2

[0108] Refer to the following Figure 3 to Figure 4D 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, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural diagram of an imaging lens group according to Embodiment 2 of the present application is shown.

[0109] Such as image 3 As shown, the imaging lens group according to the exemplary embodiment of the present application includes in sequence from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8 and imaging surface S17.

[0110] 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, an...

Embodiment 3

[0122] Refer to the following Figure 5 to Figure 6D An imaging lens group according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an imaging lens group according to Embodiment 3 of the present application is shown.

[0123] Such as Figure 5 As shown, the imaging lens group according to the exemplary embodiment of the present application includes in sequence from the object side to the image side along the optical axis: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8 and imaging surface S17.

[0124]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, the object side S5 is concave, and the image side S6 is conve...

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Abstract

The application discloses a camera lens group. The lens group includes, along an optical axis in sequence from an object side to an image side, a first lens which has positive focal power and whose image side surface is a concave surface, a second lens having focal power, a third lens having focal power, a fourth lens having focal power, a fifth lens having focal power, a sixth lens which has positive focal power and whose object side surface is a concave surface, a seventh lens having focal power and an eighth lens which has negative focal power and whose object side surface is a concave surface. The total effective focal length f of the camera lens group and an entrance pupil diameter EPD of the camera lens group satisfy the formula f/EPD<=2.0.

Description

technical field [0001] The present application relates to an imaging lens group, more specifically, the present application relates to an imaging lens group including eight lenses with a large field of view and a large aperture. Background technique [0002] With the improvement of the performance and the reduction of the size of commonly used photosensitive elements such as photosensitive coupling device (CCD) or complementary metal oxide semiconductor device (CMOS), the number of pixels of the photosensitive element is increased and the size of the pixel is reduced. The high imaging quality and miniaturization of the matching camera lens group put forward higher requirements. [0003] The reduction in pixel size means that the amount of light passing through the imaging system will be reduced within the same exposure time. However, image sensors and environmental backgrounds have certain system noises, which have certain requirements for the amount of light passing throug...

Claims

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Application Information

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IPC IPC(8): G02B13/00
Inventor 宋博闻人建科
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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