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Optical imaging lens and imaging equipment

A technology of optical imaging lens and imaging surface, which is applied in the field of imaging lens, can solve the problems of many aspherical lenses and high production cost, and achieve the effects of good imaging quality, convenient assembly, and large aperture assembly

Active Publication Date: 2021-10-08
JIANGXI LIANCHUANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing lenses on the market have a large number of lenses, and many aspherical lenses are used, and the production cost has been high; therefore, it is necessary to develop a high-resolution, large image area, and large Aperture, high-illuminance optical lens is the top priority

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

[0064] see figure 1 , which is a schematic structural view of the optical imaging lens 100 provided in the first embodiment of the present invention, the optical imaging lens 100 includes in sequence from the object side to the imaging surface along the optical axis: a first lens L1, a second lens L2, and a diaphragm ST, the third lens L3, the fourth lens L4, the fifth lens L5, and the filter G1;

[0065] The first lens L1 has negative refractive power, and the object side S1 of the first lens and the image side S2 of the first lens are both concave surfaces;

[0066] The second lens L2 has positive refractive power, and the object side S3 of the second lens and the image side S4 of the second lens are both convex surfaces;

[0067] The third lens L3 has positive refractive power, the object side S5 of the third lens is concave, and the image side S6 of the third lens is convex;

[0068] The fourth lens L4 has a positive refractive power, and the object side S7 of the fourth...

no. 2 example

[0079] The structure of the optical imaging lens provided by the second embodiment of the present invention is substantially the same as that of the optical imaging lens 100 provided by the first embodiment, except that the parameters such as radius of curvature, thickness, and material selection of each lens are different.

[0080] Please refer to Table 2, which shows the relevant parameters of each lens in the optical imaging lens provided by the second embodiment of the present invention.

[0081] Table 2

[0082]

[0083] Please refer to Figure 5 , Image 6 with Figure 7 , respectively show the vertical axis chromatic aberration diagram, distortion curve diagram and relative illuminance diagram of the optical imaging lens in this embodiment. from Figure 5 It can be seen from the figure that the difference between short-wave chromatic aberration and long-wave chromatic aberration is controlled within 3.5 microns, indicating that the vertical axis chromatic aberrat...

no. 3 example

[0088] see Figure 8 , shows the imaging device 300 provided by the third embodiment of the present invention, and the imaging device 300 may include an imaging element 310 and the optical imaging lens (such as the optical imaging lens 100 ) in any of the above embodiments. The imaging element 310 may be a CMOS (Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor) image sensor, and may also be a CCD (Charge Coupled Device, Charge Coupled Device) image sensor.

[0089] The imaging device 300 may be a vehicle-mounted camera, a surveillance camera, or any other form of electronic device loaded with the aforementioned optical imaging lens.

[0090] The imaging device 300 provided in the embodiment of the present application includes an optical imaging lens 100. Since the optical imaging lens 100 has the advantages of large image area, large aperture and high illuminance, the imaging device 300 with the optical imaging lens 100 also has a large image ar...

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Abstract

The invention discloses an optical imaging lens and an imaging device. The optical imaging lens sequentially comprises from the object side to the imaging surface along the optical axis: a first lens with negative refractive power, the object side and the image side are both concave surfaces; The second lens with positive refractive power, the object side and the image side are both convex; the diaphragm; the third lens with positive refractive power, the object side is concave, and the image side is convex; the fourth lens with positive refractive power, The object side and image side are both convex; the fifth lens with negative refractive power has a concave object side and a convex image side, and the fourth lens and the fifth lens form a cemented lens group; wherein the first lens , the second lens, the third lens, the fourth lens and the fifth lens are all glass spherical lenses. The optical imaging lens has the advantages of large image surface, large aperture and high illumination.

Description

technical field [0001] The invention relates to the technical field of imaging lenses, in particular to an optical imaging lens and imaging equipment. Background technique [0002] ADAS (Advanced Driver Assistant System, Advanced Driver Assistance System) uses the on-board camera lens as a key component, which can sense the road conditions around the vehicle in real time, and realize functions such as forward collision warning, lane departure warning and pedestrian detection. The ADAS system has extremely high requirements on the vehicle-mounted lens. First, it needs to have a strong light transmission ability and be able to adapt to changes in light and shade in the external environment. It can have a good resolution ability for objects that emit or reflect monochromatic light of different wavelengths (such as traffic lights, road sign information, etc.), so as to meet the special requirements of the intelligent driving system. [0003] With the development of autonomous d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B1/00G03B30/00
CPCG02B1/00G02B13/005
Inventor 张歆越王克民曾吉勇
Owner JIANGXI LIANCHUANG ELECTRONICS CO LTD
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