Inner hole 360-degree side wall detection lens system

Abstract

The utility model discloses an inner hole 360-degree side wall detection lens system. Comprising a first diaphragm unit, a second single positive spherical lens, a third single negative spherical lens, a fourth single positive spherical lens, a fifth single negative spherical lens, a sixth single positive spherical lens, a seventh single positive spherical lens, an eighth single positive spherical lens, a ninth single negative spherical lens and a tenth positive spherical lens, and the fourth single positive spherical lens and the fifth single negative spherical lens form a bonding lens group. The system realizes full-coverage detection of inner hole diameters of 5mm to 120mm by optimizing the curvature and arrangement of the lenses, has the advantages of simple structure, low cost, high precision and the like, and is suitable for inner hole detection in the fields of automobiles, packaging, industrial manufacturing and the like.

Description

Technical Field

[0001] This utility model relates to the field of optical inspection equipment technology, and in particular to a lens system for inspecting the 360° sidewall of an inner hole. Background Technology

[0002] Traditional internal bore inspection techniques have the following drawbacks:

[0003] It cannot simultaneously cover a wide diameter range from 5mm to 120mm, requiring switching between multiple sets of equipment;

[0004] It has a complex structure, high cost, and is difficult to operate;

[0005] The detection accuracy is insufficient to meet industrial-grade requirements. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this application proposes a 360° inner hole sidewall detection lens system to solve the problems existing in the prior art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A 360° sidewall detection lens system for an inner aperture includes a first aperture unit, a second single positive spherical lens, a third single negative spherical lens, a fourth single positive spherical lens, a fifth single negative spherical lens, a sixth single positive spherical lens, a seventh single positive spherical lens, an eighth single positive spherical lens, a ninth single negative spherical lens, and a tenth single positive spherical lens arranged sequentially from the object side. The fourth single positive spherical lens and the fifth single negative spherical lens are bonded together, as are the eighth single positive spherical lens and the ninth single negative spherical lens. Light from the inner aperture sidewall passes through the aperture unit and enters the subsequent imaging system for imaging.

[0009] As a further technical solution of this utility model: the second single positive spherical lens is a concave-convex positive lens with the opening direction facing the object surface.

[0010] As a further technical solution of this utility model: the third single negative spherical lens is a convex-concave negative lens with the opening direction facing the image plane.

[0011] As a further technical solution of this utility model: the fourth single positive spherical lens is a biconvex positive lens.

[0012] As a further technical solution of this utility model: the fifth single negative spherical lens is a convex-concave negative lens with the opening direction facing the object surface.

[0013] As a further technical solution of this utility model: the sixth single positive spherical lens is a biconvex positive lens.

[0014] As a further technical solution of this utility model: the seventh single positive spherical lens is a concave-convex positive lens with its opening facing the object surface.

[0015] As a further technical solution of this utility model: the eighth single positive spherical lens is a biconvex positive lens.

[0016] As a further technical solution of this utility model: the ninth single negative spherical lens is a convex-concave negative lens with the opening direction facing the object surface.

[0017] As a further technical solution of this utility model: the tenth single positive spherical lens is a concave-convex positive lens with the opening direction facing the image plane.

[0018] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0019] This invention can detect inner hole diameters ranging from 5mm to 120mm, requiring only one system for comprehensive inspection. Therefore, the 360° inner hole sidewall inspection lens reduces costs when inspecting the 360° sidewalls of inner holes, offering a simple structure and easy operation. With its unique optical system, the 360° inner hole sidewall inspection lens has a significant market potential in fields such as inner hole inspection of automotive parts, inner wall inspection of bottles, and inner hole inspection of industrial parts with internal holes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] In the diagram: 1-First aperture unit, 2-Second single positive spherical lens, 3-Third single negative spherical lens, 4-Fourth single positive spherical lens, 5-Fifth single negative spherical lens, 6-Sixth single positive spherical lens, 7-Seventh single positive spherical lens, 8-Eighth single positive spherical lens, 9-Single negative spherical lens, 10-Tenth single positive spherical lens. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] like Figure 1As shown, a 360° sidewall detection lens system for an inner aperture includes a first aperture unit 1, a second single positive spherical lens 2, a third single negative spherical lens 3, a fourth single positive spherical lens 4, a fifth single negative spherical lens 5, a sixth single positive spherical lens 6, a seventh single positive spherical lens 7, an eighth single positive spherical lens 8, a ninth single negative spherical lens 9, and a tenth single positive spherical lens 10 arranged sequentially from the object side. The fourth single positive spherical lens 4 and the fifth single negative spherical lens 5 are bonded lens groups, and the eighth single positive spherical lens 8 and the ninth single negative spherical lens 9 are bonded lens groups. Light from the inner aperture sidewall passes through the aperture and enters the subsequent imaging system for imaging.

[0024] The working principle is as follows:

[0025] The second single positive spherical lens 2 is a concave-convex positive lens with its opening facing the object plane. The third single negative spherical lens 3 is a convex-concave negative lens with its opening facing the image plane. The fourth single positive spherical lens 4 is a biconvex positive lens. The fifth single negative spherical lens 5 is a convex-concave negative lens with its opening facing the object plane. The sixth single positive spherical lens 6 is a biconvex positive lens. The seventh single positive spherical lens 7 is a concave-convex positive lens with its opening facing the object plane. The eighth single positive spherical lens 8 is a biconvex positive lens. The ninth single negative spherical lens 9 is a convex-concave negative lens with its opening facing the object plane. The tenth single positive spherical lens 10 is a concave-convex positive lens with its opening facing the image plane.

[0026] This design can inspect inner hole diameters ranging from 5mm to 120mm, requiring only a single system for comprehensive inspection. Therefore, the 360° inner hole sidewall inspection lens reduces costs when inspecting the 360° sidewalls of inner holes, offering a simple structure and easy operation. With its unique optical system, the 360° inner hole sidewall inspection lens has a significant market potential in fields such as inner hole inspection of automotive parts, inner wall inspection of bottles, and inner hole inspection of industrial parts with internal holes.

[0027] The structural numerical examples of the lens assembly are shown in the table below:

[0028] Table 1: Structural values ​​of the lens assembly;

[0029]

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment have been appropriately combined to form other embodiments that are easy for those skilled in the art to understand.

Claims

1. A lens system for detecting the 360° sidewall of an inner hole, characterized in that: The system includes a first aperture unit (1), a second single positive spherical lens (2), a third single negative spherical lens (3), a fourth single positive spherical lens (4), a fifth single negative spherical lens (5), a sixth single positive spherical lens (6), a seventh single positive spherical lens (7), an eighth single positive spherical lens (8), a ninth single negative spherical lens (9), and a tenth single positive spherical lens (10), arranged sequentially from the object side. The fourth single positive spherical lens (4) and the fifth single negative spherical lens (5) are bonded lens groups, and the eighth single positive spherical lens (8) and the ninth single negative spherical lens (9) are bonded lens groups. Light from the inner hole sidewall passes through the aperture and enters the subsequent imaging system for imaging.

2. The internal bore 360° sidewall detection lens system according to claim 1, characterized in that, The second single positive spherical lens (2) is a concave-convex positive lens with its opening facing the object surface.

3. The internal bore 360° sidewall detection lens system according to claim 1, characterized in that, The third single negative spherical lens (3) is a convex-concave negative lens with its opening facing the image plane.

4. The internal bore 360° sidewall detection lens system according to claim 1, characterized in that, The fourth single positive spherical lens (4) is a biconvex positive lens.

5. The internal bore 360° sidewall detection lens system according to claim 1, characterized in that, The fifth single negative spherical lens (5) is a convex-concave negative lens with its opening facing the object surface.

6. The internal bore 360° sidewall detection lens system according to claim 1, characterized in that, The sixth single positive spherical lens (6) is a biconvex positive lens.

7. The internal bore 360° sidewall detection lens system according to claim 1, characterized in that, The seventh single positive spherical lens (7) is a concave-convex positive lens with its opening facing the object surface.

8. The internal bore 360° sidewall detection lens system according to claim 1, characterized in that, The eighth single positive spherical lens (8) is a biconvex positive lens.

9. A 360° sidewall inspection lens system for internal holes according to claim 1, characterized in that, The ninth single negative spherical lens (9) is a convex-concave negative lens with its opening facing the object surface.

10. A 360° sidewall inspection lens system for internal holes according to claim 1, characterized in that, The tenth single positive spherical lens (10) is a concave-convex positive lens with its opening facing the image plane.

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