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Optical imaging lens

A technology of optical imaging lens and imaging surface, applied in optics, optical components, instruments, etc., can solve problems such as increased distortion, difficulty in matching, and reduced degree of freedom in design

Pending Publication Date: 2021-01-05
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to meet the requirements of high pixels and large field of view, common optical imaging lenses usually need to adopt a large-aperture configuration, resulting in a longer lens size, so it will be difficult to meet the requirements of a high-pixel photosensitive chip
In addition, in order to further increase the field of view, it often leads to increased distortion, that is, the main ray exit angle is too large, which makes the lens resolution insufficient
In order to meet the development needs of the market, the optical imaging lens needs to shorten the total length of the lens as much as possible and reduce the number of lenses, but this will reduce the design freedom and increase the design difficulty, and it is difficult to meet the high-quality imaging requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Refer to the following Figure 1 to Figure 2D An optical imaging lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0095] Such as figure 1 As shown, the optical imaging lens includes in sequence from the object side to the image side: the first lens E1, the second lens E2, the diaphragm STO, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, The seventh lens E7, the filter E8 and the imaging surface S17.

[0096] The first lens E1 has negative refractive power, its object side S1 is concave, and its image side S2 is convex. 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 concave, and its image side S6 is concave. The fourth lens E4 has positive refractiv...

Embodiment 2

[0111] Refer to the following Figure 3 to Figure 4D An optical imaging lens 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 according to Embodiment 2 of the present application is shown.

[0112] Such as image 3 As shown, the optical imaging lens includes in sequence from the object side to the image side: the first lens E1, the second lens E2, the diaphragm STO, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, The seventh lens E7, the filter E8 and the imaging surface S17.

[0113] The first lens E1 has negative refractive power, its object side S1 is concave, and its image side S2 is convex. 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...

Embodiment 3

[0125] Refer to the following Figure 5 to Figure 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0126] Such as Figure 5 As shown, the optical imaging lens includes in sequence from the object side to the image side: the first lens E1, the second lens E2, the diaphragm STO, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, The seventh lens E7, the filter E8 and the imaging surface S17.

[0127] The first lens E1 has negative refractive power, its object side S1 is concave, and its image side S2 is convex. 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 concave, and its image side S6 is concave. The fourth lens E4 has positive refract...

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Abstract

The invention discloses an optical imaging lens which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens with focal power from an object side to an image side along an optical axis. The first lens has negative focal power, the object side surface of the first lens is a concave surface, and the image side surface is a convex surface; and the third lens has negative focal power. The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and halfImgH of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens satisfy the condition that TTL / ImgH is less than or equal to 1.4.

Description

technical field [0001] The present application relates to the field of optical elements, in particular, to an optical imaging lens. Background technique [0002] With the rapid development of electronic products, the application of optical imaging lenses is becoming more and more extensive. With the trend of electronic products gradually becoming thinner and lighter, the optical imaging lens must not only have good image quality, but also need to have a thinner and lighter shape, so as to effectively reduce product costs and be more in line with humanized design. [0003] Currently, most of the photosensitive elements used in optical imaging lenses in the market are Charge Coupled Devices (CCD) or Complementary Metal-Oxide Semiconductor Sensors (CMOS Sensors). With the improvement of semiconductor process technology, the pixel size of the photosensitive element is continuously reduced, making the optical imaging lens mounted on electronic products such as mobile phones or d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G02B9/64G02B27/0025
Inventor 戴付建徐武超赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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