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Optical imaging lens and electronic device using same

An optical imaging lens and lens technology, applied in optics, optical components, instruments, etc., can solve problems such as difficulty in conforming to miniaturization design trends, long overall length, etc., achieve good optical performance, shorten overall length, and expand half field of view corner effect

Inactive Publication Date: 2014-10-29
GENIUS ELECTRONICS OPTICAL XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Both US8199416 and US8351135 patents disclose a four-piece optical imaging lens, the refractive index of the second lens is positive, and the refractive index of the third lens is negative. Comply with the design trend of miniaturization

Method used

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  • Optical imaging lens and electronic device using same
  • Optical imaging lens and electronic device using same
  • Optical imaging lens and electronic device using same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0119] see figure 1 , 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 71 of the first embodiment, please refer to Figure 2A , astigmatic field aberration in the sagittal direction, please refer to Figure 2B 、 Astigmatism aberration in the meridian direction (tangential) please refer to Figure 2C , and distortion aberration (distortion aberration), please refer to Figure 2D . The Y-axis of each spherical aberration diagram in all embodiments represents the field of view, and its highest point is 1.0. In this embodiment, the Y-axis of each astigmatism diagram and distortion diagram represents the image height, and the system image height is 2.856 mm.

[0120]The optical imaging lens system 1 of the first embodiment is mainly composed of four lenses made of plastic and having a refractive index, a filter 72 , an aperture 80 , and a...

no. 2 example

[0137] see image 3 , illustrating the second embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration on the imaging surface 71 of the second embodiment, please refer to Figure 4A , Astigmatic aberration in the sagittal direction, please refer to Figure 4B 、Astigmatic aberration in the meridional direction, please refer to Figure 4C , Distortion aberration, please refer to Figure 4D . The second embodiment is similar to the first embodiment, except that the parameters of the lens, such as the radius of curvature, the refractive index of the lens, the radius of curvature of the lens, the thickness of the lens, the aspheric coefficient of the lens or the back focal length, etc. are different. The detailed optical data of the second embodiment is as Figure 18 As shown, the aspheric data such as Figure 19 shown. The length of the optical imaging lens is 4.934 mm, while the system image height is 2.856 mm, and the HF...

no. 3 example

[0140] see Figure 5 , illustrating the third embodiment of the optical imaging lens 1 of the present invention. For the longitudinal spherical aberration on the imaging surface 71 of the third embodiment, please refer to Figure 6A , Astigmatic aberration in the sagittal direction, please refer to Figure 6B 、Astigmatic aberration in the meridional direction, please refer to Figure 6C , Distortion aberration, please refer to Figure 6D . The third embodiment is similar to the first embodiment, except that the parameters of the lens, such as radius of curvature, lens refractive index, lens radius of curvature, lens thickness, lens aspheric coefficient or back focal length, etc. are different, and the third embodiment In the example, the second object side 21 of the second lens 20 has a concave surface 23A located near the optical axis and a convex surface 24A located near the circumference. The detailed optical data of the third embodiment is as follows Figure 20 As sho...

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Abstract

The invention relates to an optical imaging lens and an electronic device using the optical imaging lens. The optical imaging lens comprises a first lens, an aperture, a second lens with negative refractive index, a third lens with positive refractive index and a fourth lens. A convex portion on the area nearby the optical axis and a convex portion on the area nearby the circumference are arranged on the object side of the first lens. A concave portion on the area nearby the circumference is arranged on the object side of the third lens, and a convex portion on the area nearby the optical axis is arranged on the image side of the third lens. A convex portion on the area nearby the circumference is arranged on the object side of the fourth lens, and a concave portion on the area nearby the optical axis and a convex portion on the area nearby the circumference are arranged on the image side of the fourth lens. The electronic device comprises a machine casing and an image module installed in the machine casing. The image module comprises the optical imaging lens, a lens cone, a module rear seat unit, a substrate and an image sensor. The optical imaging lens and the electronic device are light in weight, reduce lens length, reduce manufacture cost and are high in resolution and imaging quality.

Description

technical field [0001] The present invention generally relates to an optical imaging lens and an electronic device including the optical imaging lens. Specifically, the present invention particularly refers to an optical imaging lens with a shorter lens length, and an electronic device using the optical imaging lens. Background technique [0002] In recent years, the thinning of mobile phones has become a design trend, and this trend has affected the development of related optical imaging lenses. How to effectively reduce the system length of optical lenses while maintaining sufficient optical performance has always been an industry effort. The direction of research and development. [0003] Both US8199416 and US8351135 patents disclose a four-piece optical imaging lens, the refractive index of the second lens is positive, and the refractive index of the third lens is negative. Comply with the design trend of miniaturization. [0004] Therefore, how to effectively reduce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B13/00
CPCG02B13/004G02B9/34G02B13/0015
Inventor 陈思翰林家正叶龙
Owner GENIUS ELECTRONICS OPTICAL XIAMEN