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Low-distortion compact type high-resolution fisheye lens optical system

An optical system and high-resolution fish technology, applied in optics, optical components, instruments, etc., can solve the problems of large distortion of the optical system, achieve low cost, achieve low distortion, and achieve the effect of imaging

Pending Publication Date: 2019-11-19
FOSHAN UNIVERSITY
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  • Description
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  • Application Information

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Problems solved by technology

However, the existing fisheye lens optical system has the defect of large distortion

Method used

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  • Low-distortion compact type high-resolution fisheye lens optical system
  • Low-distortion compact type high-resolution fisheye lens optical system
  • Low-distortion compact type high-resolution fisheye lens optical system

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Embodiment 1

[0032] Embodiment 1, with reference to figure 1 , a low-distortion compact high-resolution fisheye lens optical system is proposed, including a front lens group, a diaphragm 800, a rear lens group, and an image surface 900 arranged sequentially from front to back along the incident direction of light;

[0033] The front lens group includes a first lens 100, a second lens 200, and a third lens 300 arranged sequentially from front to back;

[0034] The rear lens group includes a fourth lens 400, a fifth lens 500, a sixth lens 600 and a seventh lens 700 arranged sequentially from front to back;

[0035] The fifth lens 500 and the sixth lens 600 form a doublet lens, the first lens 100 is a meniscus negative power spherical lens, and the second lens 200 is a meniscus negative power spherical thick lens , the third lens 300 is a biconvex positive power spherical lens, the fourth lens 400 is a meniscus positive positive power spherical lens, the fifth lens 500 is a biconvex positive...

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Abstract

The present invention relates to a low-distortion compact type high-resolution fisheye lens optical system. The optical system includes a front lens set, a diaphragm, a rear lens set and an image plane that are arranged sequentially from front to back along a light incident direction; the front lens set includes a first lens, a second lens and a third lens arranged sequentially from front to back;the rear lens set includes a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged sequentially from front to back; and the fifth lens and the sixth lens are formed into a doublet lens.The optical system provided by the present invention is only 11.2 mm long, thus implementing the highly compact structural layout, being beneficial to miniaturization design of a panoramic camera andenriching an application scenario of the panoramic camera; with a relatively simple structure, the excellent imaging quality is implemented; the low-distortion imaging effect is implemented, and particularly, the resolution of an edge image is improved; and with the adoption of a plastic aspherical lens, the aberration correction capability is improved; and compared with a glass aspherical lens,the cost is low and thus the optical system is beneficial to batch production.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a low-distortion compact high-resolution fisheye lens optical system. Background technique [0002] The fisheye lens 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. [0003] The fisheye lens 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. With the improvement of people's demand for panoramic imaging image performance, in addition to achieving high-definition imaging, full-frame images are required to achieve low distortion, so as to adapt to subsequent electronic image correction algorithms to obtain low-distortio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06G02B1/04
CPCG02B13/0015G02B13/0045G02B13/006G02B13/06G02B1/041
Inventor 伍雁雄谭海曙
Owner FOSHAN UNIVERSITY
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