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Imaging lens system

An imaging lens and lens technology, applied in optical components, optics, instruments, etc., can solve the problems of increasing the total length of the lens system, unable to fully correct aberrations, etc., and achieve the effect of small and light structure and excellent optical performance.

Inactive Publication Date: 2016-01-06
KOLEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, if two lenses are used, aberrations may not be sufficiently corrected due to the reduced pixel size
If four lenses are used, aberrations are adequately corrected, but the overall length of the lens system increases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0080] figure 1 The optical arrangement of the imaging lens system according to the first embodiment of the present invention is shown, and the lens data of the first embodiment are as follows.

[0081] Table 1

[0082] Fno.=1.6, f=11.868

[0083] S

R

T

Nd

Vd

OBJ

No tamp

0.0000

2*

4.4254

3.4516

1.5238

55.7283

3*

22.6280

0.4278

ST

No tamp

2.6240

5*

23.9624

0.5500

1.5238

55.7283

6*

10.8748

2.5357

7*

-9.9690

1.1368

1.5238

55.7283

8*

282.0169

0.4000

[0084] 9

gigantic

0.3000

64.1664

10

gigantic

0.4742

IMG

gigantic

0.0000

[0085] The aspheric coefficients are as follows.

[0086] Table 2

[0087] S

2

3

5

6

7

...

no. 2 example

[0091] image 3 The optical arrangement of the imaging lens system according to the second embodiment of the present invention is shown, and the lens data of the second embodiment are as follows.

[0092] table 3

[0093] Fno.=1.6838, f=11.911

[0094] S

R

T

Nd

Vd

OBJ

gigantic

0.0000

2*

4.3034

2.8733

1.5238

55.7283

3*

13.0828

0.6226

ST

gigantic

2.0216

5*

28.3459

0.5500

1.5238

55.7283

6*

23.2018

4.3485

7*

-19.1535

0.5555

1.5238

55.7283

8*

14.1682

0.5621

9

gigantic

0.3000

64.1664

10

gigantic

0.1663

IMG

gigantic

0.0000

[0095] The aspheric coefficients are as follows.

[0096] Table 4

[0097]

[0098]

[0099] Figure 4 The longitudinal sp...

no. 3 example ＞

[0102] Figure 5 The optical arrangement of the imaging lens system according to the third embodiment of the present invention is shown, and the lens data of the third embodiment are as follows.

[0103] table 5

[0104] Fno.=1.5841, f=11.949

[0105] S

R

T

Nd

Vd

OBJ

gigantic

0.0000

2*

4.3830

3.4816

1.5238

55.7283

3*

15.9142

0.5516

ST

gigantic

2.0113

5*

27.3688

0.5500

1.5238

55.7283

6*

19.5099

3.4163

7*

-6.3764

0.8891

1.5238

55.7283

8*

-33.4093

0.4064

9

gigantic

0.3000

64.1664

10

gigantic

0.3935

[0106] IMG

gigantic

0.0000

[0107] The aspheric coefficients are as follows.

[0108] Table 6

[0109] S

2

3

5

6 ...

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PUM

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Abstract

The invention provides an imaging lens system. The imaging lens system successively comprises a first lens having positive refractive power, a second lens having negative refractive power and a third lens having negative refractive power from the object side to the image side; and a visual angle [theta] meets the following condition: 0.3<|tan[theta]|<0.8.

Description

technical field [0001] The invention relates to an imaging lens system. Background technique [0002] Cameras using solid-state image sensors, such as charge coupled device (CCD) or complementary metal oxide semiconductor (CMOS) image sensors, have rapidly become popular. [0003] In order to increase the resolution of the camera, it is necessary to increase the pixel integration of the solid-state image sensor. And, as the cameras become smaller and lighter due to the improvement in performance of lens optics built therein, the cameras are being widely integrated into various mobile devices. [0004] In lens optics included in these cameras, desired performance can be obtained when the number of lenses is increased; however, increasing the number of lenses is not suitable for lower-cost compact and lightweight cameras. Therefore, a design suitable for obtaining desired performance of a compact and lightweight camera is necessary. [0005] In such lens design, a method of...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
Inventor 安致浩赵在勳金智恩姜灿求金世晋
Owner KOLEN
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