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Optical imaging lens group

An optical imaging and lens group technology, applied in optics, optical components, instruments, etc., can solve problems such as enlargement, and achieve the effect of high imaging quality and miniaturized imaging quality

Pending Publication Date: 2019-02-15
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the large aperture of the large-aperture imaging lens group, the lens diameter and the total length of the lens group tend to increase accordingly. Conventional systems using spherical lenses are difficult to achieve large-aperture imaging while maintaining a small lens aperture and lens group. total length

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Refer to the following Figure 1 to Figure 2D An optical imaging lens group according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging lens group according to Embodiment 1 of the present application is shown.

[0074] Such as figure 1 As shown, the optical imaging lens group according to the exemplary embodiment of the present application includes sequentially 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, sixth lens E6, seventh lens E7, eighth lens E8, filter E9 and imaging surface S19.

[0075] 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...

Embodiment 2

[0102] Refer to the following Figure 3 to Figure 4D An optical imaging lens group according to Embodiment 2 of the present application is 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 optical imaging lens group according to Embodiment 2 of the present application is shown.

[0103] Such as image 3 As shown, the optical imaging lens group according to the exemplary embodiment of the present application includes sequentially 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, sixth lens E6, seventh lens E7, eighth lens E8, filter E9 and imaging surface S19.

[0104] 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 ref...

Embodiment 3

[0116] Refer to the following Figure 5 to Figure 6D An optical imaging lens group according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens group according to Embodiment 3 of the present application is shown.

[0117] Such as Figure 5 As shown, the optical imaging lens group according to the exemplary embodiment of the present application includes sequentially 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, sixth lens E6, seventh lens E7, eighth lens E8, filter E9 and imaging surface S19.

[0118] 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 obje...

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Abstract

The application discloses an optical imaging lens group, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens in sequence from the object side to the image side along the optical axis. The first lens has positive focal power, the object-side surface is convex, and the image-side surface is concave. The second lens has negative focal power, and the image-side surface is concave. The third lens has positive focal power, and the object-side surface is convex. The fourth lens has focal power. The fifth lens has focal power. The sixth lens has focal power, the object-side surface is convex, and the image-side surface is concave. The seventh lens has positive focal power. The eighth lens has focal power. The totaleffective focal length f of the optical imaging lens group and the entrance pupil diameter EPD of the optical imaging lens group satisfy the relational expression f / EPD<1.4.

Description

technical field [0001] The present application relates to an optical imaging lens group, more specifically, the present application relates to an optical imaging lens group including eight lenses. Background technique [0002] At present, in order to meet the requirements of various application scenarios, different types of optical imaging lens groups gradually appear on the market. For example, the telephoto optical lens group suitable for long-distance imaging, the ultra-thin optical lens group used in ultra-thin mobile phone bodies, the ultra-wide-angle optical lens group suitable for wide-angle imaging and used in ball screen projection, vehicle security, etc. Large-aperture optical lens group for clear imaging in low-light conditions, etc. Among them, the large-aperture optical imaging lens group has the following advantages: it is helpful for clear imaging in dim light; it is helpful for obtaining a small depth of field and achieving the shooting effect of large apert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045G02B9/64
Inventor 计云兵周鑫汤禹
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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