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Optical imaging lens

An optical imaging lens and imaging technology, used in optics, optical components, instruments, etc., can solve the problems of increasing distance, unfavorable thinning of mobile phones and digital cameras, and increasing luminous flux.

Pending Publication Date: 2020-06-05
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In recent years, the optical imaging lens has been continuously evolving. In addition to requiring the lens to be light and thin, it is also more and more important to improve the imaging quality of the lens such as aberration and chromatic aberration. However, to meet the demand, increasing the number of optical lenses will make the first lens object side to the imaging The distance between the surface and the optical axis increases, which is not conducive to the thinning of mobile phones and digital cameras. Therefore, it has always been the development goal of the design to provide an optical imaging lens that is light, small, and good in imaging quality. In addition, the small aperture value Helps increase luminous flux

Method used

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Examples

Experimental program
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no. 1 example

[0118] see Image 6 , illustrating the first embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration (longitudinal spherical aberration) on the imaging surface 91 of the first embodiment, please refer to Figure 7 For A, the field curvature aberration in the sagittal direction, please refer to Figure 7 B, field curvature aberration in the meridian direction, please refer to Figure 7 C, and distortion aberration (distortion aberration), please refer to Figure 7 D. The Y-axis of each spherical aberration diagram in all embodiments represents the field of view, and its highest point is 1.0. The Y-axis of each aberration diagram and distortion diagram in the embodiments represents the image height. The system image height (Image Height) of the first embodiment , ImgH) is 4.595 mm.

[0119] The optical imaging lens 1 of the first embodiment is mainly composed of seven lenses with refractive power, an aperture 80 , and an im...

no. 2 example

[0137] see Figure 8 , illustrating the second embodiment of the optical imaging lens 1 of the present invention. Please note that starting from the second embodiment, in order to simplify and clearly express the drawings, only the optical axis area and the circumferential area of ​​each lens that are different from the first embodiment are specially marked on the figure, while the rest are the same as those of the first embodiment. The optical axis area and the circumferential area of ​​the same surface type of the lens, such as concave or convex, are not marked separately. For the longitudinal spherical aberration on the imaging plane 91 of the second embodiment, please refer to Figure 9 A, field curvature aberration in the sagittal direction, please refer to Figure 9 B, field curvature aberration in the meridional direction, please refer to Figure 9 For C, distortion aberration, please refer to Figure 9 D. The design of the second embodiment is similar to that of t...

no. 3 example

[0140] see Figure 10 , illustrating the third embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration on the imaging surface 91 of the third embodiment, please refer to Figure 11 A, field curvature aberration in the sagittal direction, please refer to Figure 11 B, field curvature aberration in the meridional direction, please refer to Figure 11 For C, distortion aberration, please refer to Figure 11 D. The design of the third embodiment is similar to that of the first embodiment, except that only related parameters such as lens refractive power, lens curvature radius, lens thickness, lens aspheric coefficient, or back focus are different.

[0141] The detailed optical data of the third embodiment are as Figure 40 As shown, the aspheric data such as Figure 41 As shown, in this embodiment, TTL=6.770 mm; EFL=5.588 mm; HFOV=39.051 degrees; image height=4.595 mm; Fno=1.625.

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Abstract

The invention discloses an optical imaging lens which comprises first to seventh lenses along an optical axis in sequence from an object side to an image side, and each lens is provided with an objectside surface and an image side surface. The optical axis area of the object side surface of the third lens is a convex surface, the optical axis area of the object side surface of the fourth lens isa concave surface, the optical axis area of the image side surface of the fifth lens is a concave surface, the sixth lens has a positive refractive index, the circumferential area of the object side surface of the sixth lens is a concave surface, and the optical axis area of the object side surface of the seventh lens is a concave surface. The optical imaging lens satisfies the following conditions: upsilon 2 + upsilon 3 + upsilon 6 < = 110.000 and (T1 + T7) / (G12 + T2 + G45) > = 2.500. The optical imaging lens has the advantages that the system length of the optical imaging lens is reduced, the imaging quality is ensured, and the optical imaging lens has good optical performance with a small aperture value.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to an optical imaging lens. Background technique [0002] In recent years, the optical imaging lens has been continuously evolving. In addition to requiring the lens to be light and thin, it is also more and more important to improve the imaging quality of the lens such as aberration and chromatic aberration. However, to meet the demand, increasing the number of optical lenses will make the first lens object side to the imaging The distance between the surface and the optical axis increases, which is not conducive to the thinning of mobile phones and digital cameras. Therefore, it has always been the development goal of the design to provide an optical imaging lens that is light, small, and of good imaging quality. In addition, the small aperture value Helps to increase luminous flux. [0003] Therefore, how to design an optical imaging lens with a small aperture value is also a focu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B9/64
Inventor 张加欣林茂宗李建鹏
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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