Compact ultra-wide fisheye lens optical system

An optical system and ultra-wide-angle fish technology, applied in the field of optical systems, can solve the problems of complex structure and large size, and achieve the effect of enriching application scenarios, reducing the pressure of aberration correction, and excellent imaging quality.

Pending Publication Date: 2019-11-12
FOSHAN UNIVERSITY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fisheye optical system pursues the performance indicators of super large field of view, high resolution and light miniaturization, but most of the existing fisheye lens optical systems suitable for panoramic cameras have defects such as relatively complex structure and large size.

Method used

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  • Compact ultra-wide fisheye lens optical system
  • Compact ultra-wide fisheye lens optical system
  • Compact ultra-wide fisheye lens optical system

Examples

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Embodiment 1

[0031] Embodiment 1, with reference to figure 1 , a compact ultra-wide-angle fisheye lens optical system, including a front lens group 120, a diaphragm 900, a rear lens group 130, and an image plane arranged sequentially from front to back along the incident direction of light, and the front lens group 120 includes The first lens 100, the second lens 200, and the third lens 300 are arranged in sequence, and the rear lens group 130 includes a fourth lens 400, a fifth lens 500, a sixth lens 600, and a seventh lens arranged in sequence from front to back. 700;

[0032] The first lens 100 is a meniscus lens with a negative power, the second lens 200 and the fifth lens 500 are biconcave lenses with a negative power, the third lens 300, the fourth lens 400 and the sixth lens 600 are biconvex lenses with positive refractive power, the seventh lens 700 is a meniscus lens with positive refractive power, and the fourth lens 400 and the fifth lens 500 are combined into a double cement ...

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Abstract

The invention discloses a compact ultra-wide fisheye lens optical system which comprises a front lens group, a diaphragm, a rear lens group and an image plane which are sequentially arranged from front to back in the light incidence direction, wherein the front lens group comprises a first lens, a second lens and a third lenswhich are sequentially arranged from front to back; and the rear lens group comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from front to back. An anti-telephoto optical structure form is adopted by the optical system;two negative refractive power lenses are adopted by the front lens group at the forward-most end; and a larger principal light ratio inverse value is obtained, so that the aberration correction pressure of the rear lens group is reduced, the total length of the optical system is only 10mm, miniaturization design of a panorama camera is facilitated, the application scenarios of the panorama cameraare enriched, and excellent imaging quality is achieved.

Description

technical field [0001] The invention relates to the technical field of optical systems, in particular to a compact super wide-angle fisheye lens optical system. Background technique [0002] The fisheye optical system has a field of view approaching or exceeding 180°, which can obtain a super wide range of scene imaging and is widely used in security, monitoring and other fields. The fisheye optical system pursues the performance indicators of super large field of view, high resolution and light weight miniaturization, but most of the existing fisheye lens optical systems suitable for panoramic cameras have defects such as relatively complex structure and large size. Contents of the invention [0003] The invention provides a compact ultra-wide-angle fisheye lens optical system with simple structure and greatly reduced length and dimension. [0004] The solution that the present invention solves its technical problem is: [0005] A compact ultra-wide-angle fisheye lens o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/06G02B13/18G02B1/00
CPCG02B1/00G02B13/06G02B13/18
Inventor 伍雁雄谭海曙
Owner FOSHAN UNIVERSITY
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