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Optical imaging lens

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

Active Publication Date: 2022-03-04
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the large aperture design allows the lens to accept more imaging light, making the design more difficult
And the high resolution makes the resolution of the lens to be improved, and the large aperture design makes the design more difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0096] 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 4 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 5.700 mm.

[0097] The optical imaging lens 1 of the first embodiment is mainly composed of seven lenses with refractive power, an aperture 2 , and an i...

no. 2 example

[0115] 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 surface 4 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

[0118] 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 4 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 24 of the object side surface 21 of the second lens 20 is a concave surface, the circumferential area 67 of the image side surface 62 of the sixth lens 60 is a concave surface, and the circumferential area 74 of the object side su...

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Abstract

The invention discloses an optical imaging lens, which sequentially comprises a first lens to a seventh lens along an optical axis from an object side to an image side, each lens has an object side surface and an image side surface, the first lens has a positive refractive index, the second lens has a negative refractive index, a circumferential area of the object side surface of the third lens is a concave surface, and the third lens has a concave surface. An optical axis area of the image side surface of the third lens is a convex surface; an optical axis area of the object side surface of the fifth lens is a convex surface; an optical axis area of the image side surface of the sixth lens is a concave surface; an optical axis area of the object side surface of the seventh lens is a convex surface; the optical imaging lens only comprises the seven lenses, and meets the conditions that D31t72 / (Fno * D11t22) is greater than or equal to 2.300 and D32t62 * Fno / D62t72 is less than or equal to 3.500. The optical imaging lens has a large aperture (small Fno) and a large image height on the premise of increasing the resolution.

Description

technical field [0001] The invention belongs to the field of optical imaging, and in particular relates to an optical imaging lens mainly used for photographic electronic devices such as shooting images and video recordings, for example, it can be applied to portable devices such as mobile phones, cameras, tablet computers and personal digital assistants (Personal Digital Assistant, PDA). Optical imaging lenses for electronic devices. 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. The main lens of portable electronic devices not only requires a larger aperture and a shorter system length, but also pursues higher pixels and higher resolution. 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. But t...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045G02B9/64
Inventor 朱清智张嘉元高伟哲谢宏健
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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