Double telecentric lens for industrial detection

Abstract

The utility model relates to a double telecentric lens for industrial detection, which comprises a lens cone, a lens, a lens box, prisms and cameras, the lens cone comprises an inner lens cone, an outer lens cone and a lens cone sealing ring, the lens is arranged in the lens cone, one end of the lens cone is provided with the lens box, two ends of the lens box are respectively provided with the lens cone, two ends of the lens box are respectively provided with the cameras, and the prisms are arranged in the lens box. The inner lens cone is installed inside the outer lens cone, the outer side of the inner lens cone is provided with a plurality of diversion trenches, the inner side of the outer lens cone is provided with a plurality of clamping blocks, and the clamping blocks are installed on the diversion trenches. The lens box and the prism adopted by the utility model can shoot and detect at the same time under two-end visual angles, and the length of the utility model is reduced.

Description

Technical Field

[0001] This utility model relates to a dual telecentric lens, specifically a dual telecentric lens for industrial inspection. Background Technology

[0002] Double telecentric lenses are a type of high-end optical lens that plays an important role in fields such as industrial measurement and machine vision due to their unique optical design. Both the object-side principal ray and the image-side principal ray are parallel to the optical axis, which can maintain the image magnification within a certain object distance range and effectively solve problems such as parallax and distortion that exist in ordinary lenses.

[0003] Chinese patent discloses a dual telecentric lens (authorization announcement number CN 212781638 U). This patented technology includes a lens body, a protective cylinder fixedly connected to the lens body, and a cooling box detachably connected to the connection between the protective cylinder and the lens body. The cooling box stores coolant, and a protective pad is fixedly connected to the cooling box. The protective pads are spliced ​​to form a ring structure, achieving protection at the bending points of the lens body. However, the cooling function of this patented technology requires replacing the cooling box and cannot simultaneously detect from multiple angles while also occupying space efficiently. Therefore, those skilled in the art provide a dual telecentric lens for industrial inspection to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a dual telecentric lens for industrial inspection, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dual telecentric lens for industrial inspection includes a lens barrel, a lens element, a lens housing, a prism, and a camera. The lens barrel includes an inner lens barrel, an outer lens barrel, and a lens barrel sealing ring. A lens element is disposed in the lens barrel. A lens housing is disposed at one end of the lens barrel. Lens barrels are disposed at both ends of the lens housing. A camera is mounted at each end of the lens housing. A prism is disposed in the lens housing.

[0007] As a further embodiment of this utility model: the lens includes lens one, lens two and lens three, all of which are installed inside the inner endoscope tube. The inner endoscope tube is installed inside the outer endoscope tube. Several guide grooves are provided on the outer side of the inner endoscope tube, and several clamping blocks are provided on the inner side of the outer endoscope tube. The clamping blocks are installed on the guide grooves.

[0008] As a further improvement of this utility model: camera docking rings are provided at both ends of the lens case, and the camera docking rings are installed at one end of the camera.

[0009] As a further improvement of this utility model: the outer side of the lens barrel sealing ring is provided with a liquid outlet and a liquid inlet, the liquid outlet is located on the outer side of the liquid outlet groove, and the liquid inlet is located at one end of the liquid inlet groove.

[0010] As a further embodiment of this utility model: a lens box mounting ring is installed at one end of the lens barrel sealing ring, and one end of the lens box mounting ring is installed on the lens box. The inside of the lens box is provided with a lens mounting groove, and a prism is installed on the lens mounting groove. Both sides of the prism are reflective surfaces.

[0011] As a further improvement of this utility model: a lens barrel sealing ring is installed at one end of the endoscope barrel, and a liquid outlet groove and a liquid inlet groove are provided inside the lens barrel sealing ring. A mating interface is provided at one end of the lens barrel sealing ring, and the mating interface is installed on the guide groove.

[0012] As a further improvement of this utility model: the clamping block serves to connect the inner and outer lens tubes, and the interface serves to connect the liquid outlet tank and the guide channel, and the inlet liquid tank and the guide channel. Both sides of the prism are reflective surfaces, which can reflect the light in the lens tube into the cameras at both ends of the lens box, thereby shortening the overall length of this utility model and making it easier to use. This utility model can simultaneously photograph and detect objects at both ends without occupying twice the length of the lens tube plus the camera, thus increasing the detection efficiency.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The guide channel used in this utility model can be connected to an external water cooling system, so that the coolant can circulate repeatedly to cool the lens comprehensively, and can better resist the adverse effects of high temperature environment.

[0015] 2. The mirror box and prism used in this utility model can simultaneously capture and detect images from both ends of the field of view, and reduce the length of this utility model. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a dual telecentric lens used for industrial inspection.

[0017] Figure 2 This is a schematic diagram of the exploded structure of a double telecentric lens used for industrial inspection.

[0018] Figure 3 This is a schematic diagram of the endoscope tube in a double telecentric lens used for industrial inspection.

[0019] Figure 4 For a type of telecentric lens used in industrial inspection Figure 3 A magnified structural diagram of point A in the middle.

[0020] Figure 5 This is a schematic diagram of the outer lens barrel in a double telecentric lens used for industrial inspection.

[0021] Figure 6 This is an exploded structural diagram of the lens box and camera in a double telecentric lens used for industrial inspection.

[0022] Figure 7 This is a schematic diagram of the lens box in a double telecentric lens used for industrial inspection.

[0023] In the diagram: 1. Lens tube; 2. Lens; 3. Lens case; 4. Prism; 5. Camera; 101. Inner lens tube; 102. Outer lens tube; 103. Flow channel; 104. Clamping block; 105. Lens tube sealing ring; 106. Liquid outlet channel; 107. Liquid inlet channel; 108. Liquid outlet; 109. Liquid inlet; 110. Connecting interface; 201. Lens 1; 202. Lens 2; 203. Lens 3; 301. Lens mounting slot; 302. Camera docking ring; 303. Lens case mounting ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-7 In this embodiment of the present invention, a dual telecentric lens for industrial inspection includes a lens barrel 1, a lens 2, a lens box 3, a prism 4, and a camera 5. The lens barrel 1 includes an inner lens barrel 101, an outer lens barrel 102, and a lens barrel sealing ring 105. The lens 2 is disposed in the lens barrel 1. The lens box 3 is disposed at one end of the lens barrel 1. The lens barrel 1 is disposed at each end of the lens box 3. The camera 5 is installed at each end of the lens box 3. The prism 4 is installed in the lens box 3.

[0026] Lens 2 includes lens one 201, lens two 202 and lens three 203, all of which are installed inside the inner endoscope tube 101;

[0027] The endoscope tube 101 is installed inside the outer endoscope tube 102. Several guide grooves 103 are provided on the outer side of the endoscope tube 101, and several clamping blocks 104 are provided on the inner side of the outer endoscope tube 102. The clamping blocks 104 are installed on the guide grooves 103.

[0028] A tube sealing ring 105 is installed at one end of the endoscope tube 101. A liquid outlet groove 106 and a liquid inlet groove 107 are provided inside the tube sealing ring 105. A mating interface 110 is provided at one end of the tube sealing ring 105. The mating interface 110 is installed on the flow guide groove 103.

[0029] The outer side of the lens barrel sealing ring 105 is provided with a liquid outlet 108 and a liquid inlet 109. The liquid outlet 108 is located on the outer side of the liquid outlet groove 106, and the liquid inlet 109 is located at one end of the liquid inlet groove 107.

[0030] One end of the lens barrel sealing ring 105 is fitted with a lens box mounting ring 303. One end of the lens box mounting ring 303 is mounted on the lens box 3. The inside of the lens box 3 is provided with a lens mounting groove 301. A prism 4 is mounted on the lens mounting groove 301. Both sides of the prism 4 are reflective surfaces.

[0031] The lens housing 3 has camera docking rings 302 at both ends, and the camera docking rings 302 are installed at one end of the camera 5.

[0032] The working principle of this utility model is as follows:

[0033] This invention can cool down the lens barrel 1, enabling it to work in a high-temperature environment. The cooling function can be achieved through the guide channel 103, the outlet channel 106, the inlet channel 107, the inlet port 109, and the docking port 110. The coolant can be injected from the inlet port 109 and enter the inlet channel 107, thereby flowing along the Z-shaped guide channel 103 all over the outer wall of the inner lens barrel 101 and flowing out of the outlet channel 106 and the outlet port 108. The outlet port 108 and the inlet port 109 can be connected to an external circulating water cooling system or sealed after the coolant is injected.

[0034] The clamp 104 serves to connect the endoscope tube 101 and the outer endoscope tube 102, and the interface 110 serves to connect the liquid outlet tank 106 and the guide channel 103, and the liquid inlet tank 107 and the guide channel 103.

[0035] Both sides of the prism 4 are reflective surfaces. The prism 4 can reflect the light in the lens tube 1 into the cameras 5 at both ends of the lens box 3, thereby shortening the overall length of the utility model and making it easier to use. The utility model can simultaneously photograph and detect objects at both ends without occupying twice the length of the lens tube 1 plus the camera 5, thus increasing the detection efficiency.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double telecentric lens for industrial inspection, comprising a lens barrel (1), a lens element (2), a lens housing (3), a prism (4), and a camera (5), characterized in that, The lens tube (1) includes an inner lens tube (101), an outer lens tube (102) and a lens tube sealing ring (105). A lens (2) is provided in the lens tube (1). A lens box (3) is provided at one end of the lens tube (1). The lens tube (1) is provided at both ends of the lens box (3). The camera (5) is installed at both ends of the lens box (3). The prism (4) is installed in the lens box (3).

2. The double telecentric lens for industrial inspection according to claim 1, characterized in that, The lens (2) includes lens one (201), lens two (202) and lens three (203), all of which are installed inside the endoscope tube (101).

3. A double telecentric lens for industrial inspection according to claim 1, characterized in that, The endoscope tube (101) is installed inside the outer endoscope tube (102). The outer side of the endoscope tube (101) is provided with several guide grooves (103), and the inner side of the outer endoscope tube (102) is provided with several clamping blocks (104). The clamping blocks (104) are installed on the guide grooves (103).

4. A double telecentric lens for industrial inspection according to claim 3, characterized in that, One end of the endoscope tube (101) is equipped with the endoscope tube sealing ring (105), and the endoscope tube sealing ring (105) is provided with a liquid outlet groove (106) and a liquid inlet groove (107). One end of the endoscope tube sealing ring (105) is provided with a coupling interface (110), and the coupling interface (110) is installed on the flow guide groove (103).

5. A double telecentric lens for industrial inspection according to claim 4, characterized in that, The outer side of the lens barrel sealing ring (105) is provided with a liquid outlet (108) and a liquid inlet (109). The liquid outlet (108) is located on the outer side of the liquid outlet groove (106), and the liquid inlet (109) is located at one end of the liquid inlet groove (107).

6. A double telecentric lens for industrial inspection according to claim 5, characterized in that, One end of the lens barrel sealing ring (105) is fitted with a lens box mounting ring (303), and one end of the lens box mounting ring (303) is mounted on the lens box (3). The lens box (3) is provided with a lens mounting groove (301), and the prism (4) is mounted on the lens mounting groove (301). Both sides of the prism (4) are reflective surfaces.

7. A double telecentric lens for industrial inspection according to claim 6, characterized in that, The mirror box (3) is provided with camera docking rings (302) at both ends, and the camera docking rings (302) are installed at one end of the camera (5).

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