Optical imaging lens and imaging equipment

An optical imaging lens, imaging surface technology, applied in the field of imaging lenses, to achieve ultra-high resolution, easy assembly, and meet requirements

Active Publication Date: 2021-03-12
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 cannot meet the above requirements well. Therefore, it is urgent to develop an optical imaging lens with high resolution, large imaging area, and large aperture that can cooperate with ADAS.

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

[0061] 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 includes sequentially from the object side to the imaging surface along the optical axis: a first lens L1, a second lens L2, a diaphragm ST , the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the filter G1;

[0062] The first lens L1 has negative refractive power, the object side S1 of the first lens L1 is convex, and the image side S2 of the first lens L1 is concave;

[0063] The second lens L2 has negative refractive power, the object side S3 of the second lens L2 is concave, and the image side S4 of the second lens L2 is convex;

[0064] The diaphragm ST is arranged between the second lens L2 and the third lens L3;

[0065] 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;

[0066]...

no. 2 example

[0081] The optical imaging lens provided by the second embodiment of the present invention has substantially the same structure as the optical imaging lens 100 in the first embodiment, and the difference lies in that the parameters such as the radius of curvature of each lens are different.

[0082] The relevant parameters of each lens in the optical imaging lens of the second embodiment of the present invention are shown in Table 3.

[0083] table 3

[0084]

[0085]

[0086] The parameters of the aspheric surfaces of each lens in this embodiment are shown in Table 4.

[0087] Table 4

[0088]

[0089] Please refer to Figure 5 , Image 6 and Figure 7 , which are respectively the field curvature graph, f-θ distortion graph and MTF graph of the optical imaging lens in the second embodiment. from Figure 5 It can be seen that the field curvature of the meridional image plane and sagittal image plane is controlled within ±0.04mm, indicating that the field curvatu...

no. 3 example

[0095] see Figure 8 , the third embodiment of the present invention provides an imaging device 200, and the imaging device 200 may include an imaging element 210 and the optical imaging lens (eg, the optical imaging lens 100) in any of the above embodiments. The imaging element 210 may be a CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor) image sensor, or may be a CCD (Charge Coupled Device, charge coupled device) image sensor.

[0096] The imaging device 200 may be a vehicle-mounted surveillance device, an unmanned aerial vehicle, a panoramic camera, or any other electronic device equipped with an optical imaging lens.

[0097] The imaging device 200 provided in this embodiment includes the optical imaging lens in any of the above embodiments. Since the optical imaging lens has the advantages of high resolution, large imaging surface, large aperture, and good thermal stability, the imaging device 200 has high resolution. , large imagin...

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Abstract

The invention discloses an optical imaging lens and imaging equipment. The optical imaging lens sequentially comprises a first lens, a second lens, a diaphragm, a third lens, a fourth lens, a fifth lens, a sixth lens and an optical filter from an object side to an imaging surface along an optical axis, the first lens is a meniscus lens with negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens has negative focal power, the object side surface is a concave surface, and the image side surface is a convex surface; the diaphragm is arranged between the second lens and the third lens; the third lens has positive focal power, and the object side surface and the image side surface ofthe third lens are convex surfaces; the fourth lens has positive focal power, and the object side surface and the image side surface of the fourth lens are convex surfaces; the fifth lens has negativefocal power, and the object side surface and the image side surface of the fifth lens are concave surfaces; and the sixth lens element with positive refractive power has a convex object-side surfaceand a convex image-side surface. The optical imaging lens provided by the invention has the characteristics of ultrahigh resolution, good thermal stability, large aperture, convenience in assembly andthe like.

Description

technical field [0001] The present invention relates to the technical field of imaging lenses, in particular to an optical imaging lens and an imaging device. Background technique [0002] With the development of autonomous driving technology, ADAS (Advanced Driver Assistant System) has become the standard configuration of automobiles; among them, the vehicle camera lens, as the key component of ADAS, can sense the road conditions around the vehicle in real time and realize forward collision The performance of functions such as early warning, lane deviation alarm and pedestrian detection directly affects the safety factor of ADAS. Therefore, the performance requirements for vehicle camera lenses are getting higher and higher. [0003] The ADAS system has extremely high requirements for the mounted on-board lens. First, it requires strong light transmission ability, which can adapt to the changes of light and shade in the external environment. At the same time, the lens requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/006G02B13/06G02B13/18G02B9/64
Inventor 张歆越王克民曾吉勇
Owner JIANGXI LIANCHUANG ELECTRONICS CO LTD
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