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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 to achieve the effects of ultra-high resolution, good imaging quality, and convenient assembly

Active Publication Date: 2022-03-04
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

However, most lenses on the existing market cannot meet the above requirements well. Therefore, it is urgent to develop an optical imaging lens with high resolution and large imaging surface 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

[0058] 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 third lens L3, stop ST, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, and filter G1;

[0059] The first lens L1 has negative refractive power, the object side S1 of the first lens L1 is a convex surface, and the image side S2 of the first lens L1 is a concave surface;

[0060] The second lens L2 has a negative refractive power, the object side S3 of the second lens L2 is a concave surface, and the image side S4 of the second lens L2 is a convex surface;

[0061] The third lens L3 has a positive refractive power, and both the object side S5 and the image side S6 of the third lens L3 are convex;

[0062] The stop ST is disposed between the third lens L3 and...

no. 2 example

[0080] 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 in the first embodiment, except that the parameters such as the radius of curvature of each lens are different.

[0081] The relevant parameters of each lens in the optical imaging lens according to the second embodiment of the present invention are shown in Table 3.

[0082] table 3

[0083]

[0084]

[0085] The parameters of each lens aspheric surface in this embodiment are shown in Table 4.

[0086] Table 4

[0087]

[0088] Please refer to Figure 5 , Figure 6 and Figure 7 , respectively show the field curvature curve diagram, f-θ distortion diagram and MTF curve diagram of the optical imaging lens in the second embodiment. From Figure 5 It can be seen from the figure that the field curvature of the meridional image plane and sagittal image plane is controlled within ±0.05mm, indicat...

no. 3 example

[0094] 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 (such as 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, and may also be a CCD (Charge Coupled Device, Charge Coupled Device) image sensor.

[0095] The imaging device 200 may be a vehicle monitoring device, a drone, a panoramic camera, or any other form of electronic device loaded with an optical imaging lens.

[0096] 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 characteristics of ultra-high resolution, good thermal stability, large imaging surface, and convenient assembly, the imaging device 200 has imaging quality. High, large t...

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Abstract

The invention discloses an optical imaging lens and an imaging device. The optical imaging lens sequentially comprises: a first lens with negative refractive power from the object side to the imaging surface along the optical axis, the object side is convex, and the image side is concave; A second lens with negative power, its object side is concave and its image side is convex; a third lens with positive power, its object side and image side are both convex; stop; a fourth lens with positive power A lens whose object side and image side are both convex; a fifth lens with positive power, whose object side and image side are both convex; a sixth lens with negative power, whose object side and image side are both concave , and the fifth lens and the sixth lens form a cemented lens group; the seventh lens with positive refractive power has a convex surface on both the object side and the image side. The optical imaging lens provided by the invention has the characteristics of super high resolution, good thermal stability, large imaging surface and convenient assembly.

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] With the development of autonomous driving technology, ADAS (Advanced Driver Assistant System, Advanced Driver Assistance System) has become the standard configuration of automobiles; among them, the on-board camera lens, as a 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 departure warning, and pedestrian detection directly affects the safety factor of ADAS. Therefore, the performance requirements of on-board camera lenses are getting higher and higher. [0003] The optical imaging lens installed in ADAS and applied to the front of the vehicle is mainly to identify the situation in front of the car. It is required to clearly distinguish obstacles from a hundred meters away ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18G02B1/00
CPCG02B13/0045G02B13/006G02B13/06G02B13/18G02B1/00
Inventor 张歆越王克民曾吉勇
Owner 合肥联创光学有限公司
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