Small-caliber cylinder 360-degree outer wall detection lens system

Abstract

The utility model discloses a 360-degree outer wall detection lens system for a small-caliber cylinder. Comprising a first concave spherical reflection lens, a second convex spherical reflection lens, a third single negative spherical lens, a fourth single positive spherical lens, a fifth single positive spherical lens, a sixth diaphragm unit, a seventh single negative spherical lens, an eighth single positive spherical lens, a ninth single positive spherical lens and a tenth imaging image surface from the object space. Outer wall light is reflected by the first concave spherical reflector and then reflected by the second convex spherical reflector to enter a rear imaging system for imaging. According to the utility model, the single system can cover the diameter detection from 3mm to 12mm. The system is simple in structure, low in cost, high in precision and suitable for column outer wall detection in the fields of glass products, packaging, medicine, industrial manufacturing and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical detection equipment technical field, especially relates to a small caliber cylinder 360 degree outer wall detection lens system. BACKGROUND

[0002] Traditional small caliber cylinder detection has the following defects:

[0003] 1. At least six sets of plane detection systems are needed to cover 360 degree outer wall, and the equipment cost is high;

[0004] 2. The detection range is narrow, and it is difficult to adapt to the diameter change of 3mm to 12mm;

[0005] 3. The structure is complex, and the operation is cumbersome. INVENTION CONTENTS

[0006] In order to make up for the deficiencies of the prior art, the application provides a small caliber cylinder 360 degree outer wall detection lens system to solve the problems in the prior art.

[0007] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0008] A small caliber cylinder 360 degree outer wall detection lens system, comprising a first concave spherical mirror from the object side, a second convex spherical mirror, a third single negative spherical mirror, a fourth single positive spherical mirror, a fifth single positive spherical mirror, a sixth light barrier unit, a seventh single negative spherical mirror, an eighth single positive spherical mirror, a ninth single positive spherical mirror and a tenth imaging image plane, the outer wall light passes through the first concave spherical mirror and is reflected, and then passes through the second convex spherical mirror and is reflected into the rear imaging system for imaging.

[0009] As a further technical scheme of the utility model: the concave reflection direction of the first concave spherical mirror is towards the object plane.

[0010] As a further technical scheme of the utility model: the convex reflection direction of the second convex spherical mirror is towards the image plane.

[0011] As a further technical scheme of the utility model: the third single negative spherical mirror is a convex-concave negative lens, and the opening direction is towards the image plane.

[0012] As a further technical scheme of the utility model: the fourth single positive spherical mirror is a concave-convex positive lens, and the opening direction is towards the object plane.

[0013] As a further technical scheme of the utility model: the fifth single positive spherical mirror is a double-convex positive lens.

[0014] As a further technical scheme of the utility model: the seventh single negative spherical lens is a double-concave negative lens.

[0015] As a further technical scheme of the utility model: the eighth single positive spherical lens is a double-convex positive lens.

[0016] As a further technical scheme of the utility model: the ninth single positive spherical lens is a double-convex positive lens.

[0017] As a further technical scheme of the utility model: the focal length of the lens group of the imaging system is -3.13mm.

[0018] One or more technical schemes provided in the embodiment of the application have at least the following technical effects or advantages:

[0019] The utility model can realize single system coverage 3mm to 12mm diameter detection, and the system has simple structure, low cost and high precision, and is suitable for column outer wall detection in the fields of glass products, packaging, medicine and industrial manufacturing. ACCOUNT OF DRAWINGS

[0020] Figure 1 It is the structural schematic diagram of the utility model.

[0021] In the drawing: 1 - first concave spherical mirror piece, 2 - second convex spherical mirror piece, 3 - third single negative spherical lens, 4 - fourth single positive spherical lens, 5 - fifth single positive spherical lens, 6 - sixth is diaphragm unit, 7 - seventh single negative spherical lens, 8 - eighth single positive spherical lens, 9 - ninth single positive spherical lens, 10 - tenth imaging image surface. DETAILED DESCRIPTION

[0022] The technical schemes in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] As Figure 1 As shown in a small caliber cylinder 360 ° outer wall detection lens system, characterized by: including from the first concave spherical mirror piece 1, second convex spherical mirror piece 2, third single negative spherical lens 3, fourth single positive spherical lens 4, fifth single positive spherical lens 5, sixth is diaphragm unit 6, seventh single negative spherical lens 7, eighth single positive spherical lens 8, ninth single positive spherical lens 9 and tenth imaging image surface 10 from the object side, outer wall light is reflected through the first concave spherical mirror piece 1, then is reflected through the second convex spherical mirror piece 2 and enters the imaging system behind imaging.

[0024] The working principle is as follows:

[0025] The concave reflecting direction of the first concave spherical mirror 1 is towards the object plane. The convex reflecting direction of the second convex spherical mirror 2 is towards the image plane. The third single negative spherical mirror 3 is a convex-concave negative lens, and the opening direction is towards the image plane. The fourth single positive spherical mirror 4 is a concave-convex positive lens, and the opening direction is towards the object plane. The fifth single positive spherical mirror 5 is a biconvex positive lens. The seventh single negative spherical mirror 7 is a biconcave negative lens. The eighth single positive spherical mirror 8 is a biconvex positive lens. The ninth single positive spherical mirror 9 is a biconvex positive lens. The focal length of the lens group of the imaging system is -3.13 mm.

[0026] The design can detect the diameter of a cylinder ranging from 3 mm to 12 mm, and only one system is needed for comprehensive detection, so that the small-diameter cylinder 360° outer wall detection lens can reduce the cost when detecting the 360° outer wall of the cylinder, and has a simple structure and is easy to operate. The small-diameter cylinder 360° outer wall detection lens has a unique optical system and has a considerable market in the fields of glass cylinder 360° outer wall appearance detection, bottle cap 360° outer wall detection, cylindrical medical product detection, cylindrical workpiece detection and the like.

[0027] The structure values of the lens group are shown in the following table:

[0028] Table 1: Structure value table of the lens group

[0029]

[0030] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the foregoing description, and it is intended to encompass all changes and modifications that fall within the meaning and scope of equivalents of the claims. Therefore, the scope of the present application is not limited to the above-described embodiments, and various modifications and changes can be made thereto without departing from the spirit and scope of the present application.

[0031] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment have been properly combined to form other embodiments which are easily understood by those skilled in the art.

Claims

1. A lens system for detecting the 360° outer wall of a small-diameter cylinder, characterized in that: Starting from the object side, the system includes a first concave spherical reflecting lens (1), a second convex spherical reflecting lens (2), a third single negative spherical lens (3), a fourth single positive spherical lens (4), a fifth single positive spherical lens (5), a sixth aperture unit (6), a seventh single negative spherical lens (7), an eighth single positive spherical lens (8), a ninth single positive spherical lens (9), and a tenth imaging plane (10). Light rays from the outer wall are reflected by the first concave spherical reflecting lens (1) and then reflected by the second convex spherical reflecting lens (2) before entering the subsequent imaging system for imaging.

2. The small-diameter cylindrical 360° outer wall inspection lens system according to claim 1, characterized in that, The concave surface of the first concave spherical reflective lens (1) reflects the object surface.

3. The small-diameter cylindrical 360° outer wall inspection lens system according to claim 1, characterized in that, The convex surface of the second convex spherical reflector (2) is convex and the reflection direction is towards the image plane.

4. The small-diameter cylindrical 360° outer wall inspection 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.

5. The small-diameter cylindrical 360° outer wall inspection lens system according to claim 1, characterized in that, The fourth single positive spherical lens (4) is a concave-convex positive lens with its opening facing the object surface.

6. The small-diameter cylindrical 360° outer wall inspection lens system according to claim 1, characterized in that, The fifth single positive spherical lens (5) is a biconvex positive lens.

7. The small-diameter cylindrical 360° outer wall inspection lens system according to claim 1, characterized in that, The seventh single negative spherical lens (7) is a double concave negative lens.

8. The small-diameter cylindrical 360° outer wall inspection lens system according to claim 1, characterized in that, The eighth single positive spherical lens (8) is a biconvex positive lens.

9. A small-diameter cylindrical 360° outer wall inspection lens system according to claim 1, characterized in that, The ninth single positive spherical lens (9) is a biconvex positive lens.

10. A small-diameter cylindrical 360° outer wall inspection lens system according to claim 1, characterized in that, The lens assembly of the imaging system has a focal length of -3.13mm.

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