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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.

Pending Publication Date: 2022-03-01
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

[0083] 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 aberration diagram in the embodiments represents the image height. The image height of the first embodiment (Image Height, ImgH) is 5.467 mm.

[0084] The optical imaging lens 1 of the first embodiment is mainly composed of eight lenses with refractive power, an aperture 2 , and an...

no. 2 example

[0097] 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

[0100] 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.

[0101] The detailed optical data of the third embodiment are as Figure 24 As shown, the aspheric data such as Figure 25 As shown, in this embodiment, EFL=8.647 mm; HFOV=40.842 degrees; TTL=9.384 mm; Fno=1.909; ImgH=5.742 mm. In particular: 1. The system length TTL of this embodime...

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Abstract

The invention discloses an optical imaging lens which comprises a first lens to an eighth lens. The first lens has a positive refractive index, a circumferential area of an image side surface of the first lens is a concave surface, a circumferential area of an object side surface of the third lens is a concave surface, an optical axis area of an image side surface of the sixth lens is a convex surface, an optical axis area of an object side surface of the eighth lens is a convex surface, and a circumferential area of an image side surface of the eighth lens is a convex surface. The optical imaging lens only comprises the eight lenses, and the condition that D41t51 / (T3 + G34) is larger than or equal to 1.700 is met. The optical imaging lens has the characteristics of large aperture, large image height and high resolution.

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 portable electronic devices, not only larger aperture and 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 to the limited system length of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B1/04
CPCG02B13/0045G02B13/18G02B1/041G03B30/00G02B9/64
Inventor 廖华滨黄颂超林海谢宏健
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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