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High-pixel optical lens

An optical lens and high-pixel technology, applied in optics, optical components, instruments, etc., to achieve high-pixel, back focus compensation effect, and perfect imaging clarity

Active Publication Date: 2014-03-26
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because plastic lenses are greatly affected by temperature, it is difficult to ensure high-definition image requirements at different temperature ranges if used improperly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] In Embodiment 1, the overall focal length value of the optical lens is F, the aperture value is FNO, the field of view is FOV, and the total length of the lens is TTL.

[0058] Table 1 is the parameter of the system of example 1:

[0059] F=4.82mmFNO=1.6FOV=70°TTL=19.1mm

[0060] Face number

radius of curvature r

center thickness d

Refractive index Nd

Abbe constant Vd

Effective caliber D

1

12.69495

0.6

1.517

64.2

6.41

2

3.121

2.866

4.91

*3

-3.119

1.662

1.512

56.3

4.74

*4

-3.906

0.1

5.60

5

9.516

3.249

1.804

46.6

5.58

6

-9.516

-0.2

4.93

7

Infinity

0.3

4.78

8

7.22

1.983

1.696

55.5

4.78

9

-7.22

0.6

1.847

23.8

4.43

10

5.6

1.05

4.14

*11

-26.213

2.2

...

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PUM

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Abstract

The invention discloses a high-pixel optical lens. A front lens group with a positive focal power, a diaphragm, and a rear lens group with a positive focal power are successively arranged from an object side to an image side, wherein the front lens group is composed of a first lens with a negative focal power, a second lens with a negative focal power and a third lens with a negative focal power; and the rear lens group is composed of a group of gummed eyeglasses and a sixth lens with a positive focal power. The optical lens related to by the invention can realize small distortion, small dimension and high light transmitting performance, can satisfy an optical lens with a high definition requirement, and can ensure that quite perfect imaging sharpness still remains within a temperature scope of -40 DEG to +85 DEG, thereby being especially suitable for outdoor monitoring and vehicle-mounted camera systems.

Description

technical field [0001] The invention relates to a high-pixel optical lens, in particular to a monitoring or vehicle-mounted front-view lens suitable for maintaining high resolution in different temperatures. Background technique [0002] With the development of active safety in the automotive industry, the requirements for vehicle-mounted front-view lenses continue to increase. Small distortion, miniaturization, high-pixel, and large-aperture lenses are already necessary conditions for such lenses. And the lens is required to maintain perfect imaging clarity within the temperature range of -40°C to +85°C. [0003] In order to meet these requirements, it has become an inevitable trend to introduce the design of aspheric lens into the front-view lens. At the same time, in order to meet the requirements of low cost, the aspheric lens in the lens needs to use plastic aspheric surface as much as possible. However, because plastic lenses are greatly affected by temperature, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
Inventor 谢前森
Owner NINGBO SUNNY AUTOMOTIVE OPTECH
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