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Optical imaging lens

An optical imaging lens and imaging technology, applied in the field of optical imaging, can solve the problems of increasing the aperture value and reducing the amount of incoming light

Active Publication Date: 2020-09-11
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When the effective focal length of the optical imaging lens is increased, the aperture value increases, and at the same time, the amount of incoming light decreases

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0085] 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 aberration diagram in the embodiments represents the image height. The system image height of the first embodiment ( Image Height, ImgH) is 2.580 mm.

[0086] The optical imaging lens 1 of the first embodiment is mainly composed of six lenses with refractive power, an aperture 80 ...

no. 2 example

[0103] 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

[0106] 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 peripheral region 24 of the object side surface 21 of the second lens 20 is a convex surface, the optical axis region 26 of the image side surface 22 of the second lens 20 is a concave surface and its peripheral region 27 is a concave surface, and th...

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Abstract

The invention discloses an optical imaging lens which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a five lens to a sixth lens along an optical axis from an objectside to an image side, and each lens is provided with an object side surface and an image side surface. A circumferential area of the image side surface of the sixth lens is a convex surface. The optical imaging lens comprises the six lenses. The sum of the five air gaps of the first to sixth lenses on the optical axis is larger than the sum of the six thicknesses of the first to sixth lenses on the optical axis. The maximum air gap is formed between the second lens and the third lens; the object side surface and the image side surface of one of the second lens to the fifth lens are aspheric surfaces, the following conditional expressions are satisfied: 2.000 < = EFL / ImgH, the EFL is defined as the effective focal length of the optical imaging lens, and the ImgH is defined as the image height of the optical imaging lens. The optical imaging lens has the advantages that the effective focal length is increased, the aperture value is maintained, the imaging quality is maintained, the assembling difficulty is reduced, and the manufacturing yield is improved.

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 portable electronic products are changing with each passing day, and one of its key components: the optical imaging lens is also more diversified. Zoom function. If the effective focal length of the telephoto lens is longer, the magnification of the optical zoom is higher. [0003] When the effective focal length of the optical imaging lens is increased, the aperture value increases, and at the same time, the amount of incoming light decreases. Therefore, how to increase the effective focal length of the optical imaging lens while maintaining the aperture value, maintain the image quality, reduce the difficulty of assembly and improve the manufacturing yield is one of the topics that need to be further discussed. Contents of the invention [0004] Therefore, in order to solve the above problems, vario...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G02B9/62G02B2003/0093G02B3/04G02B13/02
Inventor 张嘉元廖华滨刘新明
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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