Prism system for assisting in shooting bottom of deep hole

Abstract

The prism system for assisting in shooting the bottom of the deep hole comprises a first prism and a second prism, the first prism is arranged along the hole depth and refracts first light of the light source to illuminate the bottom of the deep hole; the second prism is used for being arranged along the hole depth and refracting second light scattered at the bottom of the deep hole; the second light is used for being captured and imaged. Two prisms with different polarities are glued according to a certain arrangement, a semi-transparent and semi-reflective film is not used, the total reflection principle of light is utilized, loss of energy illumination is avoided, high precision requirements for prism installation are not needed, and the prism installation precision is improved due to the fact that the prism principle is total reflection. The image is not stretched or deformed in the transmission process, the imaging effect is not influenced, the precision and efficiency of visual detection are well guaranteed, the problems that the bottom of the deep hole is not bright enough and the depth is too large and shooting cannot be carried out are effectively solved, and the method has high practicability and wide applicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a prism system, concretely relates to an auxiliary shooting deep hole bottom prism system belongs to optical prism technical field. BACKGROUND

[0002] With the development of science and technology, machine vision has been more and more widely used in industrial production process, and people use visual camera to shoot some parts that human eyes cannot reach to assist production.

[0003] But some application occasions such as deep hole bottom and other complex structures need to be illuminated and shot, but the field of view of the visual lens and the illumination range of the light source are limited, so some non-standard imaging methods need to be used to expand the shooting range of the optical system to realize deep hole shooting.

[0004] At present, there are also methods of using optical fiber turning to realize deep hole shooting, but due to the limitation of optical fiber aperture and NA, the range of optical fiber system shooting is limited. There are also methods of using half-transmission half-reflection film, but the half-transmission half-reflection film will also cause the problems of light energy loss and ghost image,

[0005] Therefore, we design a new prism system to solve the above technical problems. SUMMARY

[0006] In order to solve the problems of the prior art, the purpose of the utility model is to provide a prism system for assisting shooting deep hole bottom.

[0007] In order to achieve the above goal, the utility model adopts the following technical scheme:

[0008] A prism system for assisting shooting deep hole bottom, comprising a first prism and a second prism; the first prism is used to be arranged along the hole depth, and the first light of the light source is refracted to illuminate the deep hole bottom;

[0009] The second prism is used to be arranged along the hole depth, and the second light scattered back to the deep hole bottom is refracted; the second light is used to be captured and imaged.

[0010] The first prism and the second prism are symmetrical to each other.

[0011] The top surface and the bottom surface of the first prism and the second prism are respectively the transmission surface, and the side surface is respectively the reflection surface.

[0012] Further, the top surface and / or the bottom surface of the first prism and the second prism are coated with an antireflection film.

[0013] The side surface of the first prism and the second prism is longitudinally arranged, and the top surface and the bottom surface are respectively at an angle of 45° with the side surface.

[0014] The bottom surface and the top surface of the first prism are parallel to each other, and the bottom surface and the top surface of the second prism are parallel to each other.

[0015] The first prism and the second prism are air gap bonded through adjacent surfaces to form a prism group.

[0016] Further, the bottom surface of the prism group forms a concave cavity between the first prism and the second prism.

[0017] Still further, the internal angle of the cross section of the concave cavity is 90°.

[0018] Further, the folding angle of the top of the cross section of the prism group is 90°.

[0019] The utility model has the advantages of:

[0020] The utility model discloses a kind of prisms of auxiliary shooting deep hole bottom, using two dissimilar prisms is bonded according to certain arrangement, without using half transparent half reflection film, utilize the total reflection principle of light, not only there is no energy illumination loss, and the installation of prism also does not have very high precision requirement, and since the principle of prism uses total reflection, there is no any stretching in the process of transmission of image, deformation, will not affect imaging effect, provide good guarantee to the precision and efficiency of visual inspection, effectively solve the problem that deep hole bottom brightness is not enough, depth is too deep to shoot, With strong practicality and extensive applicability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is structural schematic diagram of prism system.

[0022] The meaning of mark in the drawing is as follows: 1, first prism, 2, second prism. DETAILED DESCRIPTION

[0023] The utility model will be specifically introduced in combination with the drawings and specific embodiment.

[0024] A kind of prisms of auxiliary shooting deep hole bottom, is composed of first prism 1 and second prism 2.

[0025] As Figure 1 The cross-sectional view shown in the figure, the top surface and the bottom surface of the first prism are mutually parallel inclined surface. Two side surfaces are parallel longitudinal surface. And the inclination angle of inclined surface relative to longitudinal surface is preferably 45 °.

[0026] The top surface of the first prism is surface 1, the bottom surface is surface 3, one side surface is surface 2, and the other side surface is surface 4. Surface 1 is coated with an anti-reflection film to increase the entry of illumination light energy; surface 2 is not coated with a film and light is conducted by total reflection; surface 3 is coated with an anti-reflection film to increase the output of illumination light energy; and surface 4 is not coated with a film and light is conducted by total reflection.

[0027] The first prism and the second prism are symmetrical to each other in structure.

[0028] The top surface of the second prism is surface 6, the bottom surface is surface 8, one side surface is surface 7, and the other side surface is surface 5. Surface 8 is coated with an anti-reflection film to increase the entry of object reflected light energy; surface 7 is not coated with a film and light is conducted by total reflection; surface 6 is coated with an anti-reflection film to increase the output of illumination light energy; and surface 5 is not coated with a film and light is conducted by total reflection.

[0029] The first prism and the second prism are air gap bonded through surface 4 and surface 5 to form a prism group, and light energy is conducted.

[0030] As shown in Figure 1 The cross section of the prism group is in the shape of an arrow. Surface 1 and surface 6 form a 90° angle. Surface 3 and surface 8 also form a 90° angle and form a concave cavity at the bottom surface of the prism group.

[0031] In use,

[0032] The first light emitted by the illumination light source enters the prism group through surface 1 of the first prism, is reflected by surface 2 and surface 4 of the first prism, and is transmitted and conducted by surface 3 to illuminate the bottom of the deep hole.

[0033] The bottom information (second light) enters the prism group through surface 8 of the second prism, is reflected by surface 7 and surface 5 of the second prism, and is finally emitted to the camera system by surface 6.

[0034] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the above examples do not limit the present application in any form, and any technical solution obtained by equivalent substitution or equivalent transformation falls within the scope of the present application.

Claims

1. A prism system for assisting in photographing the bottom of a deep hole, characterized in that, The first prism and the second prism are arranged along the depth of the hole, the first prism refracts the first light from the light source to illuminate the bottom of the deep hole, and the second prism refracts the second light scattered from the bottom of the deep hole to be captured and imaged. The first prism and the second prism are arranged along the depth of the hole, the first prism refracts the first light from the light source to illuminate the bottom of the deep hole, and the second prism refracts the second light scattered from the bottom of the deep hole to be captured and imaged.

2. The prism system of claim 1, wherein, The first prism and the second prism are symmetrical to each other.

3. The prism system of claim 1, wherein, The top surface and the bottom surface of the first prism and the second prism are respectively a transmission surface, and the side surface is a reflection surface.

4. The prism system of claim 3, wherein, The top surface and / or the bottom surface of the first prism and the second prism are coated with an anti-reflection film.

5. The prism system of claim 1, wherein, The side surface of the first prism and the second prism is arranged along the longitudinal direction, and the top surface and the bottom surface are respectively at an angle of 45° with the side surface.

6. The prism system of claim 1, wherein, The bottom surface and the top surface of the first prism are parallel to each other, and the bottom surface and the top surface of the second prism are parallel to each other.

7. The prism system of claim 1, wherein, The first prism and the second prism are air gap bonded through adjacent surfaces to form a prism group.

8. The prism system of claim 7, wherein, The bottom surface of the prism group forms a concave cavity between the first prism and the second prism.

9. The prism system of claim 8, wherein, The inner angle of the cross section of the concave cavity is 90°.

10. The prism system of claim 7, wherein, The folding angle of the top of the cross section of the prism group is 90°.

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