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Optical imaging lens

An optical imaging lens and imaging technology, applied in the direction of optics, optical components, instruments, etc., can solve the problems of increasing design difficulty and increasing design difficulty

Pending Publication Date: 2021-03-05
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the design of large aperture allows the lens to accept more imaging light, making the design more difficult; while the high resolution increases the resolution of the lens, and the design of large aperture makes the design more difficult.

Method used

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Examples

Experimental program
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no. 1 example

[0093] 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 system image height (Image Height) of the first embodiment , ImgH) is 5.800 mm.

[0094] The optical imaging lens 1 of the first embodiment is mainly composed of seven lenses with refractive power, an aperture 80 , and an...

no. 2 example

[0108] 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

[0111] 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 optical axis area 33 of the object side 31 of the third lens 30 is a convex surface, the circumferential area 37 of the image side 32 of the third lens 30 is a concave surface, and the optical axis area 33 of the image side 42 of the fourth lens 40 i...

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PUM

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Abstract

The invention discloses an optical imaging lens, which comprises a first lens to a seventh lens, wherein each lens is provided with an object side surface and an image side surface, the second lens has a negative refractive index, one optical axis area of the object side surface of the fifth lens is a concave surface, one optical axis area of the object side surface of the seventh lens is a convexsurface, the optical imaging lens only comprises the seven lenses, and the following conditions are satisfied: V5 + V6 + V7 is more than or equal to 140.00, (ImgH + D61t72) / D11t42 is more than or equal to 2.400, and V4 is more than or equal to 30.00. The optical imaging lens has the advantages of short system length, small aperture value, large image height, good optical performance and feasibletechnology.

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 devices are changing with each passing day, and their key components - optical imaging lenses are also becoming more diversified. For the main lens of the portable electronic device, not only a larger aperture and a shorter system length are required, but also higher pixels and higher resolution are pursued. The high pixel size implies that the image height of the lens must be increased, and the pixel requirement is increased by using a larger image sensor to receive imaging light. However, the large aperture design allows the lens to accept more imaging light, which makes the design more difficult; and the high resolution increases the resolution of the lens, and the large aperture design makes the design more difficult. Therefore, how to add multiple lenses into the limited system l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045G02B9/64
Inventor 张加欣胡润
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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