Optical calibration device

Abstract

The utility model relates to the technical field of optical calibration, and discloses an optical calibration device which comprises a locking block, a calibration platform, an adjusting base and at least one adjusting screw. A vertical first clamping groove is formed in the calibration platform; the locking block is arranged in the first clamping groove in a penetrating mode, the locking block is used for installing a light source to be calibrated, and the locking block is matched with the first clamping groove to adjust the angle of the light source; the adjusting base is arranged at the bottom of the calibration platform, the adjusting screw rod is vertically arranged below the locking block, the adjusting screw rod is in threaded connection with the adjusting base, the end face of the tail end of the adjusting screw rod abuts against the bottom face of the locking block, and the adjusting screw rod is used for adjusting the height of the locking block. According to the optical calibration device, the angle of the light source can be adjusted through cooperation of the locking block and the first clamping groove, the height of the light source is adjusted through the adjusting screw, the adjusting precision and the adjusting efficiency are improved, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of optical calibration, and in particular to an optical calibration device. Background Art

[0002] In the field of optics, it is often necessary to calibrate the angle and height of the light source. For example, when a laser light is used as the light source, in order to ensure that the light is irradiated vertically to the prism surface and finally hits the imaging device, the angle and height of the laser light often need to be adjusted to meet the calibration requirements.

[0003] The existing optical calibration device adjusts the angle and height of the light source by directly moving the light source by hand. First, the locking device is loosened, and then the light source is manually raised, lowered or rotated to adjust the angle or height of the light source. This calibration method has a large range of manual adjustment, and it is difficult to move the light source to the correct position. There are technical problems such as low adjustment accuracy, low adjustment efficiency, and inconvenient operation. Utility Model Content

[0004] The purpose of the present application is to provide an optical calibration device that can achieve high-precision, efficient and convenient adjustment of the angle and height of the light source with a simple structure.

[0005] In order to solve the above technical problems, the present application provides an optical calibration device, comprising: a locking block, a calibration platform, an adjustment base, and at least one adjustment screw;

[0006] The calibration platform is provided with a vertical first slot;

[0007] The locking block is inserted into the first slot, and is used to install the light source. The locking block cooperates with the first slot to adjust the angle of the light source.

[0008] The adjustment base is arranged at the bottom of the calibration platform, the adjustment screw is vertically arranged below the locking block, the adjustment screw is threadedly connected to the adjustment base, the tail end face of the adjustment screw abuts against the bottom surface of the locking block, and the adjustment screw is used to adjust the height of the locking block.

[0009] Optionally, the side walls of the locking block and the groove walls of the first slot are both vertical planes, and at least one side wall of the locking block fits with at least one groove wall of the first slot.

[0010] Optionally, the front side wall of the locking block is in contact with the front groove wall of the first slot, and the front side wall of the locking block and the front groove wall of the first slot are both finely machined surfaces with a machining accuracy within 0.02 mm.

[0011] Optionally, it also includes: a locking assembly;

[0012] The locking assembly is used to lock the locking block in the first slot.

[0013] Optionally, the locking assembly includes a pressing block and at least one set of locking screws;

[0014] The irradiation direction of the light source is defined as forward, the first slot is a groove with a notch facing backward, the locking block comprises a front part and a rear part, the front part is passed through the first slot, and the pressing block is arranged at the rear side of the locking block;

[0015] A group of locking screws includes two locking screws, and the two locking screws in each group are threadedly connected to the left and right sides of the locking block on the pressing block, and the tail end surface of the locking screw abuts against the rear side surface of the calibration platform.

[0016] Optionally, a vertical second slot is provided in the middle of the front side of the pressing block;

[0017] The second card slot is a groove with a notch facing forward, and the rear side portion is arranged through the second card slot.

[0018] Optionally, a locking knob is fixed to the head end of the locking screw.

[0019] Optionally, an adjustment groove is provided in the middle of the bottom surface of the locking block;

[0020] The tail end surface of the adjusting screw rod abuts against the upper groove wall of the adjusting groove.

[0021] Optionally, an adjusting knob is fixed to the head end of the adjusting screw.

[0022] Optionally, it also includes: a mounting block;

[0023] The light source is a laser lamp, and the upper part of the locking block is provided with a mounting hole in the front-to-back direction, and the mounting hole is used to mount the light source;

[0024] The mounting block is arranged on the front top of the calibration platform, and a vertical mounting groove is formed on the top of the mounting block, and the mounting groove is used to install a prism used in conjunction with the light source.

[0025] The optical calibration device provided in the present application has a first slot on the calibration platform to pass the locking block, and an adjustment base is set at the bottom of the calibration platform to install the adjusting screw. The adjusting screw supports the locking block from below, and the locking block and the first slot can be used to cooperate to adjust the angle of the light source, and the adjusting screw can be used to adjust the height of the light source, thereby improving the adjustment accuracy and efficiency, and the structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a schematic diagram of the structure of the optical calibration device according to the embodiment of the present application when used to calibrate a laser light;

[0027] Figure 2 for Figure 1 Left view of

[0028] Figure 3 for Figure 1 Partial bottom view without the laser light, adjustment base, and adjustment screw.

[0029] The reference numerals in the above drawings are described as follows:

[0030] 1-locking block, 11-front side wall, 12-rear side wall, 13-adjusting slot; 2-light source; 3-locking assembly, 31-pressing block, 311-second slot, 3111-rear slot wall, 32-locking screw, 33-locking knob; 4-prism; 5-adjusting base; 6-adjusting screw, 61-adjusting knob; 7-calibration platform, 71-first slot, 711-front slot wall, 72-connecting threaded hole; 8-mounting block. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] The optical calibration device provided in the present application is used to solve the technical problems of low adjustment accuracy, low adjustment efficiency and inconvenient operation in existing optical calibration devices which mainly use manual adjustment of the angle or height of the light source.

[0033] Specifically, the light source 2 to be calibrated may be a laser light or other light sources. In the embodiment provided in the present application, the angle and height of the laser light are adjusted using the optical calibration device of the present application. The calibration of other types of light sources 2 can be understood by reference and will not be listed one by one.

[0034] Please refer to Figure 1 to Figure 2 , Figure 1 This is a schematic diagram of the structure of the optical calibration device according to the embodiment of the present application when used to calibrate a laser light. Figure 2 for Figure 1 Left view of .

[0035] It should be noted that the front and rear in this application refer to the front and rear in the irradiation direction of the light source 2, and the two sides corresponding to the front and rear directions are the left and right. Figures 1 to 3 In the direction indicated by the arrow, Figure 1 The right side is the front and the left side is the back. Figure 2 The left side is left, and the right side is right. Figure 3 The right side is the front, the left side is the back, the upper side is the left, and the lower side is the right.

[0036] The embodiment of the present application provides an optical calibration device, including a locking block 1, a calibration platform 7, an adjustment base 5, and at least one adjustment screw 6; the calibration platform 7 is provided with a vertical first slot 71; the locking block 1 is inserted into the first slot 71, the locking block 1 is used to install the light source 2, and the locking block 1 cooperates with the first slot 71 to adjust the angle of the light source 2; the adjustment base 5 is arranged at the bottom of the calibration platform 7, the adjustment screw 6 is vertically arranged below the locking block 1, the adjustment screw 6 is threadedly connected to the adjustment base 5, the tail end face of the adjustment screw 6 abuts against the bottom surface of the locking block 1, and the adjustment screw 6 is used to adjust the height of the locking block 1. It can be understood that the first slot 71 should be a vertical through slot, so that the locking block 1 can move up and down along the first slot 71 to facilitate height adjustment.

[0037] In the above structure, the locking block 1 cooperates with the first slot 71 to achieve the adjustment of the angle of the light source, and the adjusting screw 6 can achieve stepless adjustment of the height of the light source. In this way, the difficulty of adjusting the angle and height of the light source is greatly reduced through the mutual cooperation between the simple structures, and the adjustment accuracy and efficiency are improved, and the operation is convenient. The overall structure of the optical calibration device is simple, the installation is convenient, and the production cost is low.

[0038] The application does not limit the manner in which the locking block 1 cooperates with the first slot 71, as long as the angle of the light source 2 on the locking block 1 can be adjusted. For example, the side wall of the locking block 1 and the slot wall of the first slot 71 can be set as vertical planes, and when at least one side wall of the locking block 1 and at least one slot wall of the first slot 71 fit together, the angle of the light source 2 is the required angle.

[0039] In an embodiment of the present application, the front side wall 11 of the locking block 1 and the front groove wall 711 of the first slot 71 are both set as vertical planes. When the front side wall 11 of the locking block 1 is in contact with the front groove wall 711 of the first slot 71, the angle of the light source 2 is the required angle. Specifically, the light source 2 is vertically installed on the locking block 1, the front side wall 11 of the locking block 1 and the front groove wall 711 of the first slot 71 are in contact with each other and are in a vertical state, and the light source 2 is adjusted to a horizontal state.

[0040] In actual setting, the front side wall 11 of the locking block 1 and the front groove wall 711 of the first slot 71 can be set as fine-machined surfaces to achieve precise matching between the locking block 1 and the calibration platform 7 and improve the accuracy of angle adjustment. The machining accuracy of the fine-machined surface can be set according to requirements. In the embodiment of the present application, the machining accuracy of the fine-machined surface is within 0.02 mm, that is, not greater than 0.02 mm. Here, the machining accuracy refers to the dimensional error of the machined surface.

[0041] In order to lock the locking block 1 in the first slot 71 , the optical calibration device provided in the embodiment of the present application is further provided with a locking assembly 3 .

[0042] It is understandable that the locking assembly 3 can be of various structures as long as it can achieve locking of the locking block 1 on the calibration platform 7, and the present application does not impose any limitation on this.

[0043] In this embodiment, the locking assembly 3 is configured to be in the form of a pressure block 31 and at least one set of locking screws 32. Specifically, the irradiation direction of the light source 2 is defined as the front, the first slot 71 is a groove with the slot facing backward, the locking block 1 includes a front part and a rear part, the front part is inserted into the first slot 71, and the pressure block 31 is arranged at the rear side of the locking block 1; a set of locking screws 32 includes two locking screws 32, please refer to Figure 2 The two locking screws 32 in each group are threadedly connected to the left and right sides of the locking block 1 on the pressing block 31, and the tail end faces of the locking screws 32 are against the rear side surface of the calibration platform 7.

[0044] In this arrangement, the locking screw 32 is used to press the rear side of the calibration platform 7, so that the locking block 1 is locked to the rear side of the calibration platform 7 by the pressing block 31. When in use, when the locking screw 32 is locked, the locking block 1 and the calibration platform 7 are precisely matched to ensure the correct installation angle of the light source 2, and the angle of the light source 2 does not need to be adjusted during the calibration process; when the height of the light source 2 needs to be adjusted, the locking screw 32 only needs to be slightly loosened to allow the locking block 1 to be in a state where it can move up and down.

[0045] Please continue to refer to Figure 3 , Figure 3 for Figure 1 Partial bottom view after removing the laser light, adjustment base and adjustment screw. Figure 3 The right side is the front and the left side is the back. In order to improve the locking effect of the locking assembly 3 on the locking block 1, a vertical second card slot 311 is provided in the middle of the front side of the pressing block 31 in the embodiment of the present application; the second card slot 311 is a groove with the notch facing forward, and the rear side of the locking block 1 is penetrated by the second card slot 311. It can be understood that the second card slot 311 should be a vertical through slot, and at least the rear slot wall 3111 of the second card slot 311 should match the shape of the rear side wall 12 of the locking block 1. As for the specific shape, the present application does not limit it, as long as it can ensure that the direction of the force applied by the pressing block 31 on the locking block 1 is forward.

[0046] In the embodiment provided in the present application, in the same way as the locking block 1 cooperates with the first slot 71, the rear slot wall 3111 of the second slot 311 and the rear side wall 12 of the locking block 1 are both set to vertical planes. When the rear slot wall 3111 of the second slot 311 is in contact with the rear side wall 12 of the locking block 1, tightening the locking screw 32 can make the front side wall 11 of the locking block 1 close to the front slot wall 711 of the first slot 71, thereby achieving a close fit between the front side wall 11 of the locking block 1 and the front slot wall 711 of the first slot 71, thereby further ensuring the accuracy of the light source angle adjustment.

[0047] During the specific setting, the rear groove wall 3111 of the second groove 311 and the rear side wall 12 of the locking block 1 can be set as a fine-machined surface with a processing accuracy within 0.02mm, just like the front side wall 11 of the locking block 1 and the front groove wall 711 of the first groove 71, so as to achieve precise matching between the rear groove wall 3111 of the second groove 311 and the rear side wall 12 of the locking block 1. In addition, the front side wall 11 of the locking block 1 and the front groove wall 711 of the first groove 71 can further ensure the accuracy of the light source angle adjustment.

[0048] In actual setting, the number of groups of locking screws 32 is set according to the weight of the light source 2 supported by the locking block 1, and can be one group or more than two groups. Figure 2 In this embodiment, the locking screws 32 are arranged as a group, and two locking screws 32 are arranged on the left and right sides of the locking block 1 on the pressing block 31, and the two locking screws 32 work together to lock the locking block 1. When the weight of the light source 2 is heavy, the locking screws 32 can be arranged in more than two groups. In another embodiment of the present application, the locking screws 32 are arranged in two groups, and the two locking screws 32 on the same side of the two groups of locking screws 32 can be arranged up and down, or left and right. In this way, multiple locking screws 32 can lock the locking block 1 installed with a heavier light source 2.

[0049] In the embodiment of the present application, a locking knob 33 is fixed to the head end of the locking screw 32, and the locking knob 33 is coaxially arranged with the locking screw 32. The tail end of the locking screw 32 passes through the threaded hole opened at the corresponding position on the pressure block 31 from back to front and then abuts against the rear side surface of the calibration platform 7. The locking screw 32 can be screwed in or out in the front-to-back direction by directly turning the locking knob 33 by hand, thereby realizing the locking or loosening of the locking block 1, and the operation is very convenient.

[0050] In order to make the support of the adjusting screw 6 on the locking block 1 more stable, in the embodiment of the present application, an adjusting groove 13 is opened in the middle of the bottom surface of the locking block 1, and the tail end surface of the adjusting screw 6 abuts against the upper groove wall of the adjusting groove 13. In this way, the area where the upper groove wall of the adjusting groove 13 is located is the area where the adjusting screw 6 contacts the locking block 1. The adjusting groove 13 can be waist-shaped or other shapes, and the present application does not limit this.

[0051] In this embodiment, an adjusting knob 61 is fixed to the head end of the adjusting screw 6, and the adjusting knob 61 is coaxially arranged with the adjusting screw 6. The tail end of the adjusting screw 6 passes through the threaded hole opened at the corresponding position on the adjusting base 5 from bottom to top and then abuts against the upper groove wall of the adjusting groove 13. The adjusting screw 6 can be screwed in or out in the up and down directions by directly twisting the adjusting knob 61 by hand, thereby realizing the rising or falling of the locking block 1 and adjusting the height of the light source 2. The operation is very convenient.

[0052] The present application, by providing an adjusting screw 6, can convert the rotary motion of the adjusting screw 6 in the horizontal direction into the linear motion of the locking block 1 in the vertical direction through the threaded structure. Specifically, due to the characteristics of the threaded structure itself, when the adjusting knob 61 is rotated, the locking block 1 can be slightly displaced in the vertical direction under the action of the adjusting screw 6, and the locking block 1 can more easily capture the correct position of the light source 2 when it moves slightly, which greatly reduces the difficulty of adjusting the height of the light source 2 and improves the accuracy of the height adjustment of the light source 2.

[0053] In actual settings, the number of adjusting screws 6 can also be set according to needs, for example, according to the weight of the light source 2 supported by the locking block 1, and can be one or more than two, and this application does not limit this. When the weight of the light source 2 is light, please refer to Figure 2 , the adjusting screw 6 is set to one, and the adjusting screw 6 is directly opposite to the bottom middle position of the locking block 1 to smoothly adjust the height of the locking block 1; when the weight of the light source 2 is heavier, the adjusting screw 6 is set to more than two, for example, it can be set to two, and is symmetrically arranged left and right below the locking block 1.

[0054] The adjustment base 5 of the present application is arranged at the bottom of the calibration platform 7, and is used to install and support the adjustment screw 6. It can be understood that at least a part of the adjustment base 5 should be located below the locking block 1, and after the adjustment screw 6 is installed on the adjustment base 5, the height of the locking block 1 can be adjusted.

[0055] In order to increase the space for the locking block 1 to be adjusted up and down, in this embodiment, the height of the rear top surface of the adjusting base 5 is set to be lower than the height of the front top surface of the adjusting base 5, which is equivalent to cutting off the rear upper corner of the adjusting base 5 and forming a notch in the rear upper corner, so that the adjusting base 5 can be L-shaped as a whole, and the front top surface of the adjusting base 5 is fixedly connected to the bottom surface of the calibration platform 7, and a screw mounting hole is opened at the rear of the adjusting base 5, and the tail end of the adjusting screw 6 passes through the corresponding screw mounting hole from bottom to top and enters the space where the notch is located, and the lower part of the locking block 1 extends into the space, and the tail end surface of the adjusting screw 6 is Figure 1 The top end surface of the locking block 1 abuts against the bottom surface of the locking block 1, thereby being able to support the locking block 1.

[0056] There are many ways to fix the adjustment base 5 and the calibration platform 7, and this application does not limit this, as long as the two can be fixedly connected. In order to facilitate the disassembly of the adjustment base 5, the adjustment base 5 and the calibration platform 7 can be connected by connecting bolts. In order to facilitate the installation of the connecting bolts, Figure 1 As shown, a part of the front lower corner of the adjustment base 5 is cut off to form another notch, so that the front part of the adjustment base 5 becomes thinner. At this time, the overall shape of the adjustment base 5 is similar to a Z-shape. A connecting threaded hole 72 is provided on the calibration platform 7, and another connecting threaded hole is provided on the front part of the adjustment base 5 for installing a connecting bolt.

[0057] In the embodiment of the present application, the optical calibration device of the present application is used to adjust the angle and height of the laser lamp. When the laser lamp is used as a light source, in order to ensure that the light is vertically irradiated to the surface of the prism 4 and finally hits the imaging device, the angle and height of the laser lamp often need to be adjusted to meet the calibration requirements.

[0058] Correspondingly, in order to install the laser light, you can Figure 2 As shown, a mounting hole is provided on the upper part of the locking block 1 and is passed through in the front-to-back direction, and the laser light is installed in the mounting hole. It is understood that the locking block 1 can be provided with various structures other than the above-mentioned mounting hole, and the present application does not limit this, as long as the corresponding light source can be conveniently installed. For example, the top surface of the locking block 1 can be provided as a plane, and the light source 2 can be fastened to the plane with screws.

[0059] In order to install the prism 4, in this embodiment, refer to Figure 1 to Figure 2A mounting block 8 is also provided, and the mounting block 8 is provided at the front top of the calibration platform 7. A vertical mounting groove is provided at the top of the mounting block 8, and the prism 4 is installed in the mounting groove. There are many ways to install the mounting block 8 on the calibration platform 7, and this application does not limit this. In actual setting, in order to facilitate the removal of the mounting block 8, a horizontal third slot is provided at the bottom of the mounting block 8, the slot of the third slot is downward, and is connected in the horizontal direction, and the mounting block 8 is clamped on the calibration platform 7 through the third slot.

[0060] Please refer to Figure 1 In the embodiment provided in the present application, after the locking block 1 is locked using the locking assembly 3, the close fit between the fine-machined surfaces of the locking block 1 and the calibration platform 7 can ensure that the light emitted by the laser lamp is perpendicular to the prism 4. After that, the angle of the laser lamp does not need to be adjusted. Then, when the height of the laser lamp needs to be adjusted, the locking screw 32 can be slightly loosened to allow the locking block 1 to be in a state where it can move up and down. At this time, the adjusting screw 6 is rotated to convert the rotational motion of the adjusting screw 6 in the horizontal direction into the linear motion of the locking block 1 in the vertical direction, so that the laser lamp moves slightly in the vertical direction, making it easier to capture the correct position, reducing the difficulty of adjusting the height of the laser lamp, improving the adjustment accuracy, and improving the adjustment efficiency.

[0061] In summary, the optical calibration device provided in the embodiment of the present application ensures the accuracy of the installation angle of the light source through the close cooperation between the fine-machined surfaces of the locking block 1 and the calibration platform 7, and realizes stepless adjustment of the height of the light source by adjusting the screw 6. The cooperation between the above-mentioned simple structural parts reduces the difficulty of adjusting the angle and height of the light source, improves the adjustment accuracy and efficiency, and is easy to use and has low manufacturing cost.

[0062] The principles and implementation methods of the present application are described in this article using specific examples. The description of the above embodiments is only used to help understand the device and its core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. An optical calibration device, characterized in that: include: A locking block (1), a calibration platform (7), an adjustment base (5), and at least one adjustment screw (6); The calibration platform (7) is provided with a vertical first slot (71); The locking block (1) is inserted into the first slot (71), the locking block (1) is used to install the light source (2), and the locking block (1) cooperates with the first slot (71) to adjust the angle of the light source (2); The adjustment base (5) is arranged at the bottom of the calibration platform (7), the adjustment screw (6) is vertically arranged below the locking block (1), the adjustment screw (6) is threadedly connected to the adjustment base (5), the tail end face of the adjustment screw (6) abuts against the bottom surface of the locking block (1), and the adjustment screw (6) is used to adjust the height of the locking block (1).

2. The optical calibration device according to claim 1, characterized in that: The side walls of the locking block (1) and the groove walls of the first locking groove (71) are both vertical planes, and at least one side wall of the locking block (1) fits with at least one groove wall of the first locking groove (71).

3. The optical calibration device according to claim 1 or 2, characterized in that: The front side wall (11) of the locking block (1) is in contact with the front groove wall (711) of the first slot (71); the front side wall (11) of the locking block (1) and the front groove wall (711) of the first slot (71) are both finely machined surfaces with a machining accuracy within 0.02 mm.

4. The optical calibration device according to claim 1 or 2, characterized in that: Also includes: Locking assembly (3); The locking assembly (3) is used to lock the locking block (1) in the first locking slot (71).

5. The optical calibration device according to claim 4, characterized in that: The locking assembly (3) comprises a pressing block (31) and at least one set of locking screws (32); The irradiation direction of the light source (2) is defined as forward, the first slot (71) is a groove with a notch facing backward, the locking block (1) comprises a front part and a rear part, the front part is arranged in the first slot (71), and the pressing block (31) is arranged on the rear side of the locking block (1); A group of the locking screws (32) includes two locking screws (32), and the two locking screws (32) in each group are threadedly connected to the left and right sides of the locking block (1) on the pressing block (31), and the tail end faces of the locking screws (32) are against the rear side surface of the calibration platform (7).

6. The optical calibration device according to claim 5, characterized in that: A vertical second slot (311) is provided in the middle of the front side of the pressing block (31); The second card slot (311) is a groove with a notch facing forward, and the rear side portion is arranged through the second card slot (311).

7. The optical calibration device according to claim 5, characterized in that: A locking knob (33) is fixed to the head end of the locking screw (32).

8. The optical calibration device according to claim 1 or 2, characterized in that: An adjustment groove (13) is provided in the middle of the bottom surface of the locking block (1); The tail end face of the adjusting screw rod (6) abuts against the upper groove wall of the adjusting groove (13).

9. The optical calibration device according to claim 1 or 2, characterized in that: An adjusting knob (61) is fixed to the head end of the adjusting screw rod (6).

10. The optical calibration device according to claim 1 or 2, characterized in that: Also includes: Mounting block (8); The light source (2) is a laser lamp, and a mounting hole in the front-to-back direction is provided on the upper portion of the locking block (1), and the mounting hole is used to mount the light source (2); The mounting block (8) is arranged on the front top of the calibration platform (7), and a vertical mounting groove is provided on the top of the mounting block (8), and the mounting groove is used to install a prism (4) used in conjunction with the light source (2).

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