Wide-angle lens and optical fiber sight glass system with same

A wide-angle lens and optical fiber technology, applied in optics, telescopes, optical components, etc., can solve the problems of low imaging quality and large system errors, and achieve the effect of reducing system chromatic aberration, reducing processing difficulty, and improving imaging quality.

Inactive Publication Date: 2014-07-16
BEIJING SCITLION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the application of the existing fiberscope system, there are defects of large system error and low imaging quality. Therefore, in order to meet the high quality requirements of the observer for the image, it is urgent to improve the performance of the fiberscope system

Method used

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  • Wide-angle lens and optical fiber sight glass system with same
  • Wide-angle lens and optical fiber sight glass system with same
  • Wide-angle lens and optical fiber sight glass system with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a kind of wide-angle lens of the present invention comprises lens combination arranged in sequence, and described lens combination is arranged in sequence by first lens 1, second lens 2, third lens 3, fourth lens 4, fifth lens 5 and The sixth lens 6 constitutes, wherein, the first lens 1 is a negative lens, the second lens 2 is a positive lens, the third lens 3 is a biconvex lens, the fourth lens 4 is a biconvex lens, the fifth lens 5 is a biconcave lens, and the sixth lens 5 is a biconvex lens. Lens 6 is a plano-convex lens; wherein:

[0028] The concave surface of the first lens 1 is adjacent to and opposite to the concave surface of the second lens 2; a convex surface of the third lens 3 is opposite to and adjacent to the convex surface of the second lens 2, and the other convex surface of the third lens 3 is adjacent to the fourth lens 3. One convex surface of the lens 4 is adjacent and oppositely arranged; the other convex surface of the...

Embodiment 2

[0039] Such as Figure 1 to Figure 3 As shown, a kind of wide-angle lens of the present invention and the fiber optic scope system that uses this wide-angle lens, its basic structure setting and application are the same as embodiment 1, wherein, with the focal length f=1.56mm of fiber optic scope system, entrance pupil distance D is 0.9 mm, f / D=1.67 (i.e. F-NO: 1.67), field of view (2ω) 110°, total length 10.3mm, and back focal length 0mm to further illustrate the present invention, the parameters of each lens surface (S1 to S11) see Table 1, for imaging tests of the system see Figure 4 and Figure 5 .

[0040] In order from the object side, it is assumed that surface S1 is the surface of the first lens 1 on the object side, surface S2 is the surface of the first lens 1 on the image plane side, and surface S3 is the surface of the second lens 2 on the object side , S4 is the surface of the second lens 2 on the image plane side, surface S5 is the surface of the third lens 3...

Embodiment 3

[0046] Such as Figure 1 to Figure 3 As shown, a kind of wide-angle lens of the present invention and the fiber optic scope system using this wide-angle lens, its basic structure setting and application and imaging performance test method are the same as embodiment 2, wherein, the lens data of the fiber optic scope system is F-NO. : 1.75, focal length (f): 1.58mm, field of view (2ω) 111°, total length 10.48mm and back focal length 0mm to further illustrate the present invention, the parameters of each lens surface (S1 to S11) are shown in Table 2, about the system For imaging tests see Figure 6 and Figure 7 .

[0047] In order from the object side, it is assumed that surface S1 is the surface of the first lens 1 on the object side, surface S2 is the surface of the first lens 1 on the image plane side, and surface S3 is the surface of the second lens 2 on the object side , S4 is the surface of the second lens 2 on the image plane side, surface S5 is the surface of the thir...

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PUM

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Abstract

The invention relates to a wide-angle lens and an optical fiber sight glass system with the wide-angle lens. The wide-angle lens comprises lens combinations sequentially ranked. The lens combinations include a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are sequentially ranked. The first lens is a negative lens, the second lens is a positive lens, the third lens is a biconvex lens, the four lens is a biconvex lens, the fifth lens is a biconcave lens, and the sixth lens is a plano-convex pens. The wide-angle lens is simple and optimal in structure and convenient to machine and manufacture, and is easily combined with image transmission optical fibers to form the sight glass system so as to be applied to various small spaces such as equipment gaps. According to the optical fiber sight glass system, system chromatic aberration can be effectively reduced, and imaging quality of the large-view-field optical fiber sight glass system is greatly improved. The wide-angle lens and the optical fiber sight glass system with the wide-angle lens are suitable for being applied to a large-view-field imaging system.

Description

technical field [0001] The invention relates to the technical field of increasing the field of view of an optical fiber scope system, in particular to a wide-angle lens and an optical fiber scope system using the wide-angle lens. Background technique [0002] Due to its advantages of small size, light weight, and easy bending, the fiber optic scope system can directly and quickly inspect objects that are difficult to directly observe with the naked eye, and is widely used in industrial, security, medical and other fields. However, in the application of the existing fiberscope system, there are defects of large system error and low imaging quality. Therefore, in order to meet the high-quality requirements of the observer for the image, it is urgent to improve the performance of the fiberscope system. Contents of the invention [0003] The object of the present invention is to provide a wide-angle lens and an optical fiber optic system using the wide-angle lens, which can ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/06G02B23/26G02B1/00A61B1/00
Inventor 韩琦琦彭红攀朱文华王琦
Owner BEIJING SCITLION TECH
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