Optical imaging lens

An optical imaging lens and imaging technology, applied in optics, optical components, instruments, etc.

Active Publication Date: 2021-05-04
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]However, optical lens design is not simply to scale down a lens with good imaging quality to produce an optical lens with both image quality and miniaturization. The design process not only involves In addition to material properties, lens thickness or air gap configuration, practical issues such as production and assembly yield must also be considered

Method used

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Examples

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no. 1 example

[0112] see Figure 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 image height of the first embodiment (Image Height, ImgH) was 0.144 mm.

[0113] The optical imaging lens 1 of the first embodiment is mainly composed of four lenses with refractive power, an aperture 80 , and an imaging ...

no. 2 example

[0123] 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 shape 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 ...

no. 3 example

[0126] 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 related parameters such as lens refractive power, lens curvature radius, lens thickness, lens aspheric coefficient, or back focus are different. In addition, in this embodiment, the circumferential area 14 of the object side 11 of the first lens 10 is a convex surface, the optical axis area 33 of the object side 31 of the third lens 30 is a convex surface, and the circumferential area 44 of the object side 41 of the fourth lens ...

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Abstract

The invention discloses an optical imaging lens. The optical imaging lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from an object side to an image side on an optical axis. The optical axis area of the object side surface of the first lens is a convex surface, the optical axis area of the image side surface of the third lens is a concave surface, and the optical imaging lens only comprises four lenses. Tavg is defined as the average value of the thicknesses of the four lenses on the optical axis from the first lens to the fourth lens, [nu]1 is defined as the Abbe number of the first lens, [nu]2 is defined as the Abbe number of the second lens, and Tavg < = 300 [mu]m, and |[nu]1 - [nu]2| <= 30.000 are satisfied. The optical imaging lens has the advantages of being small in aperture value (Fno), small in size, large in field angle, excellent in imaging quality and good in optical performance.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to an optical imaging lens. Background technique [0002] The specifications of consumer electronic products are changing with each passing day. Not only are the specifications of key components of electronic products such as optical lenses constantly improving to meet the needs of consumers. In addition to the imaging quality and volume of the optical lens, it is also increasingly important to improve the field of view and aperture of the imaging lens. Therefore, in the field of optical lens design, in addition to pursuing thinner lenses, it is also necessary to take into account the imaging quality and performance of the lens. [0003] However, optical lens design does not simply reduce the proportion of a lens with good imaging quality to produce an optical lens with both image quality and miniaturization. The design process not only involves material properties, lens thickness or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/004G03B30/00G02B9/34G02B13/18G02B27/0025
Inventor 廖华滨林海高伟哲董传博谢宏健
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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