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Optical imaging lens and imaging equipment

An optical imaging lens and lens technology, which is applied in the field of optical lenses, can solve the problems of poor market competitiveness, poor imaging quality, and high manufacturing costs, and achieve the effects of improving resolution, reducing aberrations, and good thermal stability

Active Publication Date: 2022-07-08
合肥联创光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the vehicle-mounted camera lenses are all made of glass materials with a relatively stable thermal expansion coefficient, it will lead to high manufacturing costs and poor market competitiveness.
In addition, users have higher and higher requirements for lens imaging quality. Imaging performance is generally improved by increasing the number of lenses. However, the increase in the number of lenses is not conducive to the miniaturization of the lens, and it will also increase the aberration. lead to poor image quality

Method used

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  • Optical imaging lens and imaging equipment
  • Optical imaging lens and imaging equipment
  • Optical imaging lens and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0083] see figure 1 , which is a schematic structural diagram of the optical imaging lens 100 provided by the first embodiment of the present invention. The optical imaging lens 100 sequentially includes a first lens L1, a second lens L2, a diaphragm along the optical axis from the object side to the imaging surface S13. ST, the third lens L3, the fourth lens L4, the fifth lens L5 and the filter G1.

[0084] The first lens L1 has negative refractive power, the object side S1 of the first lens L1 is concave, and the image side S2 is concave.

[0085] The second lens L2 has positive refractive power, the object side S3 of the second lens L2 is concave, and the image side S4 is convex.

[0086] The third lens L3 has positive refractive power, and both the object side S5 and the image side S6 of the third lens L3 are convex.

[0087] The fourth lens L4 has negative refractive power, and both the object side S7 and the image side S8 of the fourth lens L4 are concave.

[0088] Th...

no. 2 example

[0101] see Figure 5 , which is a schematic structural diagram of the optical imaging lens 200 provided by the second embodiment of the present invention. The optical imaging lens 200 in this embodiment has substantially the same structure as the optical imaging lens 100 provided by the first embodiment, and the difference is mainly in that , the object side surface S3 of the second lens L2 in the optical imaging lens 200 is a convex surface, and there are differences in the related parameters and the air spacing of each lens of the lens.

[0102] Referring to Table 3, the relevant parameters of each lens in the optical imaging lens 200 provided by the second embodiment of the present application are shown in Table 3.

[0103] table 3

[0104]

[0105]

[0106] Referring to Table 4, the surface shape coefficients of each aspherical surface of the optical imaging lens 200 provided by the second embodiment of the present application are shown in Table 4.

[0107] Table 4...

no. 3 example

[0114] see Figure 9 , which is a schematic structural diagram of the optical imaging lens 300 provided by the third embodiment of the present application. The structure of the optical imaging lens 300 provided by the embodiment of the present application is roughly the same as the structure of the optical imaging lens 100 provided by the first embodiment. The main points are: the object side S1 of the first lens is close to a plane, the image side S8 of the fourth lens L4 is convex at the near optical axis, and the relevant parameters of each lens of the lens and the air space are different.

[0115] Referring to Table 5, the relevant parameters of each lens in the optical imaging lens 300 provided by the third embodiment of the present application are shown in Table 5.

[0116] table 5

[0117]

[0118] Referring to Table 6, the surface shape coefficients of each aspherical surface of the optical imaging lens 300 provided by the third embodiment of the present applicatio...

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Abstract

The present application provides an optical imaging lens and an imaging device. The optical imaging lens includes a first lens, a second lens, a diaphragm, a third lens, a fourth lens, a fifth lens and filter. The first lens has negative refractive power, the object side is concave or near plane, and the image side is concave; the second lens has positive power, the object side is concave or convex, and the image side is convex; the third lens has positive refractive power, Both the object side and the image side are convex; the fourth lens has negative refractive power, the object side is concave, and the image side is concave or convex at the near optical axis; the fifth lens has positive power, and both the object side and the image side are Convex. The first lens and the third lens are glass lenses, and the second lens, the fourth lens and the fifth lens are plastic aspherical lenses. The optical imaging lens adopts five glass-plastic hybrid lenses, which have the advantages of large aperture, high resolution and good thermal stability while controlling the low cost.

Description

technical field [0001] The present application relates to the technical field of optical lenses, and in particular, to an optical imaging lens and an imaging device. Background technique [0002] At present, with the advancement of science and technology, the automatic driving system is also developing rapidly with the increase of market demand. In-vehicle cameras, as a key component of autonomous driving assistance systems, have also ushered in rapid development. [0003] In some applications, the vehicle camera lens needs to have the performance requirements of small size and good thermal stability. If the vehicle camera lens is all made of glass material with stable thermal expansion coefficient, it will lead to the disadvantages of high manufacturing cost and poor market competitiveness. In addition, users have higher and higher requirements for the imaging quality of the lens. The improvement of imaging performance is generally by increasing the number of lenses. Howe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B1/04G02B1/00
CPCG02B13/0045G02B13/18G02B1/041G02B1/00
Inventor 尚博文鲍宇旻曾吉勇
Owner 合肥联创光学有限公司