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Optical imaging lens

An optical imaging lens and imaging technology, applied in optics, optical components, instruments, etc., can solve the problem of reducing the structural strength of the lens

Pending Publication Date: 2022-01-14
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the reduced surface area in front of the front lens will also reduce the structural strength of the lens

Method used

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Examples

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no. 1 example

[0091] see Image 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) is 2.920 mm.

[0092] The optical imaging lens 1 of the first embodiment is mainly composed of five lenses with refractive power, an aperture 80 , and an imaging su...

no. 2 example

[0104] 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 type 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 t...

no. 3 example

[0107] 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 only 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 fifth lens 50 has a negative refractive power, and the optical axis region 56 of the image side 52 of the fifth lens 50 is a concave surface.

[0108] The detailed optical data of the third embodiment are as Figure 28 As shown, the aspheric d...

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Abstract

The invention discloses an optical imaging lens which sequentially comprises a first lens to a fifth lens from an object side to an image side along an optical axis, and the optical axis area of the object side surface of the second lens is a concave surface; the third lens has a negative refractive index, and the optical axis area of the image side surface of the third lens is a convex surface; the optical axis area of the object side surface of the fourth lens is a convex surface; the circumferential area of the object side surface of the fifth lens is a convex surface; and the optical imaging lens only comprises the five lenses, TTL is the distance from the object side face of the first lens to the imaging face on the optical axis, T1 is the thickness of the first lens on the optical axis, and the following conditional expression is met: TTL / T1<=5.600. According to the optical imaging lens, the surface area in front of the lens can be reduced, the structural strength of the lens is maintained, the large field angle design is achieved, good imaging quality is maintained, and meanwhile good optical performance is achieved.

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 front lens of the portable electronic device, not only the design with a larger field of view is pursued, but also the mutual matching with the touch screen of the portable electronic device is pursued. [0003] As the touch screen of portable electronic devices tends to be designed as a full screen, the surface area in front of the front lens must be reduced to be assembled into the opening of the touch screen. In addition, the reduced surface area in front of the front lens will also reduce the structural strength of the lens. Therefore, how to reduce the surface area in front of the lens while maintaining the half angle of view and structural str...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G03B30/00
CPCG02B13/0045G02B13/18G02B9/60
Inventor 陈锋赖永枫
Owner GENIUS ELECTRONICS OPTICAL XIAMEN
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