Imaging optical system
A technology of imaging optics and image side, which is applied in optics, optical components, instruments, etc., can solve the problems of high resolution and performance of cameras, a large number of aspheric surfaces, and high cost, and achieve miniaturization, light weight, and high resolution The effect of rate and performance
Inactive Publication Date: 2020-09-29
王亚亚
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Problems solved by technology
However, it is difficult for existing cameras to achieve high resolution and performance while being miniaturized and lightweight
On the other hand, in the prior art, aspheric surfaces are often used to correct aberrations, but there are generally too many aspheric surfaces, and aspheric surfaces are difficult to manufacture and cost high
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[0046] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. In the drawings, the shapes and dimensions of elements may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like elements.
[0047] In addition, it should be noted that in this specification, the first lens means the lens closest to the object side, and the eighth lens means the lens closest to the image sensor. Further, it should be noted that the term "front" refers to the direction from the lens module toward the object, and the term "rear" refers to the direction from the len...
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The invention provides an imaging optical system, which is composed of a front lens group and a rear lens group which are sequentially arranged from an object side to an image side, wherein the frontlens group is composed of a first lens, a second lens, a third lens, a fourth lens and a fifth lens, the rear lens group is composed of a sixth lens, a seventh lens and an eighth lens, a diaphragm islocated in front of the front lens group, only the first lens object side surface, the first lens image side surface, the third lens object side surface, the fourth lens object side surface, the fifthlens object side surface, the fifth lens image side surface, the seventh lens object side surface, the seventh lens image side surface and the eighth lens image side surface are aspheric surfaces, and the refractive index and Abbe number of each lens satisfy a specific relationship, so that the imaging optical system can realize miniaturization and light weight, and can realize high resolution and performance by adopting few aspheric surfaces.
Description
technical field [0001] The invention relates to an eight-chip imaging optical system, which is suitable for an electronic system including an imaging device. Background technique [0002] Imaging lenses are increasingly miniaturized and lightweight, and their resolutions are increasing. However, it is difficult for existing cameras to achieve high resolution and performance while being miniaturized and lightweight. On the other hand, aspherical surfaces are often used to correct aberrations in the prior art, but there is generally a problem of too many aspheric surfaces, and the aspheric surfaces are difficult to manufacture and cost high. Contents of the invention [0003] The present invention provides an imaging optical system capable of improving aberration and realizing high resolution, and on the other hand, it is desired to provide an imaging optical system with a small number of aspheric surfaces. [0004] According to the imaging optical system of the presen...
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Login to View More IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/006G02B13/18
Inventor 王亚亚
Owner 王亚亚