Lens field angle detection device

Abstract

The utility model discloses a lens field angle detection device which comprises a vertical field scale and a horizontal field scale which are fixedly arranged on a mounting bottom plate, and the mounting bottom plate is of a cross-shaped platy structure; the vertical field-of-view scale and the horizontal field-of-view scale are both of an arch structure, and the vertical field-of-view scale and the horizontal field-of-view scale are perpendicular to each other and intersect with each other; vertical scales are arranged on the bottom surface of the inner side of the vertical field-of-view scale, and horizontal scales are arranged on the bottom surface of the inner side of the horizontal field-of-view scale; the mounting bottom plate is also provided with a lens positioning frame for positioning and supporting the lens module; when the lens module is arranged on the lens positioning frame, the camera shooting end of the lens module faces the intersection position of the vertical field-of-view scale and the horizontal field-of-view scale; the device has the advantages of being simple in structure, small in occupied space, convenient to operate, high in detection efficiency and detection precision, convenient to disassemble and assemble, convenient to carry and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of camera field of view angle measurement, in particular to a lens field of view angle detection device. Background Technique

[0002] When the field of view angle is smaller than the standard, it will lead to an increase in the blind area of the field of view and problems with video stitching. However, general small lens factories have limited distortion correction capabilities. Blindly choosing a large field of view angle will cause the lens imaging to be distorted. Therefore, the ability to accurately measure the field of view angle of the lens determines the final quality of the lens imaging. The patent publication number is: CN114166472B, which discloses a method and device for measuring the field of view angle of a lens. Specifically, it discloses a detection device and a support device. The support device is used to connect the camera. The detection device includes a detection board in the shape of a hollow hemisphere, and a detection chart is arranged on the detection board. The field of view angle of the corresponding lens is determined according to the captured image obtained by the camera capturing the detection chart. However, there are problems such as complex structure, large occupied space, and low detection efficiency. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, and provide a lens field of view angle detection device with simple structure, small occupied space, convenient operation, high detection efficiency and detection accuracy, convenient disassembly and assembly, and easy to carry, which can effectively solve the problems in the background technique.

[0004] To achieve the above object, the utility model provides the following technical solution: A lens field of view angle detection device includes a vertical field of view scale and a horizontal field of view scale fixedly arranged on an installation base plate. Both the vertical field of view scale and the horizontal field of view scale are in an arched structure, and the vertical field of view scale and the horizontal field of view scale are perpendicular to each other and intersect. A vertical scale is arranged on the inner bottom surface of the vertical field of view scale, and a horizontal scale is arranged on the inner bottom surface of the horizontal field of view scale. A lens positioning frame for positioning and supporting the lens module is further arranged on the installation base plate, and when the lens module is arranged in the lens positioning frame, its camera is directly opposite to the intersection position of the vertical field of view scale and the horizontal field of view scale.

[0005] Further, the arch feet of the vertical field of view scale and the horizontal field of view scale are both in contact with the installation base plate. Threaded holes II are opened on the bottom surfaces of the arch feet of the vertical field of view scale and the horizontal field of view scale. Connecting holes I are arranged on the installation base plate at positions corresponding to the threaded holes II. The vertical field of view scale and the horizontal field of view scale are both fixedly connected to the installation base plate through screws II passing through the connecting holes I and the threaded holes II.

[0006] Further, a slot I is opened at the center of the inner bottom surface of the vertical field of view scale, and a slot II is opened at the center of the outer top surface of the horizontal field of view scale. The vertical field of view scale and the horizontal field of view scale are mutually clamped through the slot I and the slot II.

[0007] Further, a third connecting hole is provided at the position of the first card slot on the vertical field of view scale, and a third threaded hole is provided at the position of the third connecting hole on the horizontal field of view scale. The vertical field of view scale is fixedly connected to the horizontal field of view scale by a first screw passing through the third connecting hole and the third threaded hole.

[0008] Further, a first threaded hole is provided on the bottom surface of the lens positioning bracket, a second connecting hole is provided at the position corresponding to the first threaded hole on the mounting base plate, and the lens positioning bracket is fixedly connected to the mounting base plate by a third screw passing through the second connecting hole and the first threaded hole; a plurality of vertically arranged positioning pins are provided on the top surface of the lens positioning bracket.

[0009] Further, the mounting base plate is in a "cross"-shaped plate structure, and the lens positioning bracket is arranged at the center of the mounting base plate.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: In this lens field of view angle detection device, the vertical field of view scale and the horizontal field of view scale with an arched structure are used for the field of view angle detection of the lens module. The lens module is positioned and supported by the lens positioning bracket. The structure is simple, the occupied space is small, the operation is convenient, and the detection efficiency and detection accuracy are high; the vertical field of view scale and the horizontal field of view scale are connected by screws, the vertical field of view scale and the horizontal field of view scale are connected to the mounting base plate by screws, and the lens positioning bracket and the mounting base plate are connected by screws, which is convenient for disassembly and assembly and easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is an exploded schematic diagram of the present utility model;

[0013] Figure 3 is a schematic structural diagram of the vertical field of view scale of the present utility model;

[0014] Figure 4 is a schematic structural diagram of the horizontal field of view scale of the present utility model;

[0015] Figure 5 is a schematic structural diagram of the mounting base plate of the present utility model;

[0016] Figure 6 is a schematic structural diagram of the lens positioning bracket of the present utility model;

[0017] Figure 7 is a schematic structural diagram of the present utility model during use.

[0018] In the figure: 1. Mounting base plate; 101. First connection hole; 102. Second connection hole; 2. Lens positioning bracket; 21. Positioning pin; 22. First threaded hole; 3. Vertical field-of-view scale; 31. Vertical scale; 32. First card slot; 33. Third connection hole; 34. Second threaded hole; 4. Horizontal field-of-view scale; 41. Horizontal scale; 42. Second card slot; 43. Third threaded hole; 5. First screw; 6. Second screw; 7. Third screw; 800. Lens module. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0020] Please refer to Figure 1-7 , the present invention provides a technical solution: a lens field-of-view angle detection device, including a vertical field-of-view scale 3 and a horizontal field-of-view scale 4 fixedly arranged on a mounting base plate 1. The mounting base plate 1 is a "cross"-shaped plate structure; both the vertical field-of-view scale 3 and the horizontal field-of-view scale 4 are arched structures, and the vertical field-of-view scale 3 and the horizontal field-of-view scale 4 are perpendicular to each other and intersect; a vertical scale 31 is provided on the inner bottom surface of the vertical field-of-view scale 3, and a horizontal scale 41 is provided on the inner bottom surface of the horizontal field-of-view scale 4;

[0021] The arch feet of both the vertical field-of-view scale 3 and the horizontal field-of-view scale 4 are in contact with the mounting base plate 1. Second threaded holes 34 are opened on the arch bottom surfaces of the vertical field-of-view scale 3 and the horizontal field-of-view scale 4. First connection holes 101 are provided on the mounting base plate 1 at positions corresponding to the second threaded holes 34. The vertical field-of-view scale 3 and the horizontal field-of-view scale 4 are fixedly connected to the mounting base plate 1 through the second screw 6 passing through the first connection hole 101 and the second threaded hole 34;

[0022] A first card slot 32 is opened at the center of the inner bottom surface of the vertical field-of-view scale 3, and a second card slot 42 is opened at the center of the outer top surface of the horizontal field-of-view scale 4. The vertical field-of-view scale 3 and the horizontal field-of-view scale 4 are clamped to each other through the first card slot 32 and the second card slot 42; a third connection hole 33 is opened at the position of the first card slot 32 on the vertical field-of-view scale 3, and a third threaded hole 43 is opened at the position of the third connection hole 33 on the horizontal field-of-view scale 4. The vertical field-of-view scale 3 is fixedly connected to the horizontal field-of-view scale 4 through the first screw 5 passing through the third connection hole 33 and the third threaded hole 43;

[0023] The mounting base plate 1 is further provided with a lens positioning bracket 2 for positioning and supporting the lens module 800, and the lens positioning bracket 2 is arranged at the center of the mounting base plate 1. When the lens module 800 is arranged on the lens positioning bracket 2, the imaging end thereof faces the intersection position of the vertical field of view scale 3 and the horizontal field of view scale 4; a first threaded hole 22 is formed in the bottom surface of the lens positioning bracket 2, a second connecting hole 102 is formed in the mounting base plate 1 at a position corresponding to the first threaded hole 22, and the lens positioning bracket 2 is fixedly connected with the mounting base plate 1 through a screw three 7 penetrating through the second connecting hole 102 and the first threaded hole 22; a plurality of vertically arranged positioning pins 21 are arranged on the top surface of the lens positioning bracket 2.

[0024] During use: Place the lens module 800 to be measured on the lens positioning bracket 2, align the connecting hole of the lens module 800 with the positioning pin 21 on the lens positioning bracket 2, position the lens module 800 through the positioning pin 21, enable the lens module 800 to shoot the vertical field of view scale 3 and the horizontal field of view scale 4 after being powered on, and determine the field of view angle of the lens module 800 through the vertical scale 31 and the horizontal scale 41 displayed in the captured image.

[0025] The lens field of view angle detection device disclosed in this embodiment uses the vertical field of view scale 3 and the horizontal field of view scale 4 with an arched structure for the field of view angle detection of the lens module 800, and positions and supports the lens module 800 through the lens positioning bracket 2. The structure is simple, the occupied space is small, the operation is convenient, and the detection efficiency and detection accuracy are high; between the vertical field of view scale 3 and the horizontal field of view scale 4, between the vertical field of view scale 3 and the horizontal field of view scale 4 and the mounting base plate 1, and between the lens positioning bracket 2 and the mounting base plate 1 are all connected by screws, which is convenient for disassembly and assembly and easy to carry.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lens field of view angle detection device, comprising a vertical field of view scale and a horizontal field of view scale fixedly provided on a mounting base, characterized in that: The vertical field of view scale and the horizontal field of view scale are both arch structures, and the vertical field of view scale and the horizontal field of view scale intersect each other vertically; the inner bottom surface of the vertical field of view scale is provided with a vertical scale, and the inner bottom surface of the horizontal field of view scale is provided with a horizontal scale; the mounting base plate is also provided with a lens positioning frame for positioning and supporting the lens module, and when the lens module is arranged on the lens positioning frame, its camera end is aligned with the intersection of the vertical field of view scale and the horizontal field of view scale.

2. A lens field of view angle detection device according to claim 1, characterized in that: The arch feet of the vertical field of view scale and the horizontal field of view scale are both in contact with the mounting base plate, and threaded holes 2 are provided on the bottom surfaces of the arch feet of the vertical field of view scale and the horizontal field of view scale. Connecting holes 1 are provided on the mounting base plate at positions corresponding to the threaded holes 2, and the vertical field of view scale and the horizontal field of view scale are fixedly connected to the mounting base plate by screws 2 penetrating the connecting holes 1 and 2.

3. The lens field angle detection device according to claim 1, characterized in that: A first card slot is provided at the center of the inner bottom surface of the vertical field of view scale, a second card slot is provided at the center of the outer top surface of the horizontal field of view scale, and the vertical field of view scale and the horizontal field of view scale are connected to each other through the first card slot and the second card slot.

4. The lens field angle detection device according to claim 3, characterized in that: A connecting hole three is provided on the vertical field of view scale at the position of the card slot one, and a threaded hole three is provided on the horizontal field of view scale at the position of the connecting hole three. The vertical field of view scale is fixedly connected to the horizontal field of view scale by a screw one penetrating the connecting hole three and the threaded hole three.

5. The lens field angle detection device according to claim 1, characterized in that: The bottom surface of the lens positioning frame is provided with a threaded hole 1, and the mounting base plate is provided with a connecting hole 2 at a position corresponding to the threaded hole 1, and the lens positioning frame is fixedly connected to the mounting base plate by screws 3 penetrating the connecting hole 2 and the threaded hole 1; the top surface of the lens positioning frame is provided with a plurality of vertically arranged positioning pins.

6. The lens field angle detection device according to claim 1, characterized in that: The installation base plate is a "cross" shaped plate structure, and the lens positioning frame is arranged at the center of the installation base plate.

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