Coaxial visual and laser device

Abstract

The utility model relates to tunnel engineering laser ranging technical field, specifically disclose a visual and laser coaxial device. Including the shell with visual window, install industrial camera in the shell, set up the beam combining mirror between the lens of industrial camera and visual window, the beam combining mirror is obliquely arranged, still install laser emitter and mirror in the shell, the light path after the twice reflection of laser of laser emitter generation through mirror and beam combining mirror is coaxial with the light path of industrial camera and is same direction. The camera beam that industrial camera sends passes through the beam combining mirror and aims at visual window, make the laser that laser emitter sends after twice reflection of mirror and beam combining mirror with the camera beam that industrial camera sends coaxial and is same direction, and then make the collimation axis (the camera beam that industrial camera sends) and laser beam emission and receiving optical axis are completely coaxial, need not increase the inspection and correction procedure, reduce the error, improve the efficiency.

Description

Technical Field

[0001] This utility model relates to the field of laser ranging technology in tunnel engineering, specifically to a vision and laser coaxial device. Background Technology

[0002] To avoid impacting the condition of railway lines during construction, regular manual inspections and measurements are typically used for monitoring and measurement during the construction process. Traditionally, monitoring and measurement during construction primarily rely on manual monitoring using total stations and levels. Total stations utilize laser distance measurement, which works by using a laser as a light source to measure distance and calculating the distance using the speed of light and round-trip time.

[0003] Current total stations have not achieved complete coaxiality of the line of sight (visual) axis, the laser beam emission axis, and the receiving axis. Total stations need to be inspected and calibrated before measurement. Errors may occur during the inspection and calibration process, and the inspection and calibration process will affect the monitoring efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a vision and laser coaxial device to solve the problems in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A vision and laser coaxial device includes a housing with a viewing window, an industrial camera installed inside the housing with its lens aligned with the viewing window, a beam combiner disposed between the lens of the industrial camera and the viewing window, the beam combiner being tilted, and a laser emitter and a reflector also installed inside the housing, wherein the laser emitted by the laser emitter, after being reflected twice by the reflector and the beam combiner, has an optical path that is coaxial and in the same direction as the optical path of the industrial camera.

[0006] Furthermore, the angle between the optical path generated by the industrial camera and the beam combiner is 45°, the angle between the reflector and the optical path generated by the laser emitter is 45°, and the mirror surface of the reflector and the mirror surface of the beam combiner are arranged parallel to each other.

[0007] Compared with the prior art, this utility model has the following advantages and beneficial effects: The camera beam emitted by the industrial camera passes through the beam combiner and aligns with the viewing window. The wavelength of the laser emitted by the laser emitter is selected to be a wavelength that can be reflected by the beam combiner. This ensures that the laser emitted by the laser emitter is coaxial and in the same direction with the camera beam emitted by the industrial camera after two reflections by the reflector and the beam combiner. This makes the line of sight (the camera beam emitted by the industrial camera) completely coaxial with the laser beam emission and reception optical axes, eliminating the need for additional inspection and calibration processes, reducing errors, and improving efficiency. Attached Figure Description

[0008] Figure 1This is an overall drawing of the present utility model.

[0009] Figure 2 This is a cross-sectional view of the present invention.

[0010] The labels in the diagram are as follows: 1-shell, 2-viewing window, 3-industrial camera, 4-beam combiner, 5-laser emitter, 6-reflector, 7-camera beam, 8-laser. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0012] like Figure 1 , Figure 2 As shown, a vision and laser coaxial device includes a housing 1 with a viewing window 2, an industrial camera 3 installed inside the housing 1, and the lens of the industrial camera 3 aligned with the viewing window 2; a beam combiner 4 is disposed between the lens of the industrial camera 3 and the viewing window 2, and the beam combiner 4 is tilted; a laser emitter 5 and a reflector 6 are also installed inside the housing 1, and the laser 8 generated by the laser emitter 5 is coaxial and in the same direction with the optical path of the industrial camera 3 after being reflected twice by the reflector 6 and the beam combiner 4.

[0013] This invention is mainly used in engineering monitoring, particularly for measuring arch settlement and horizontal convergence during tunnel construction, replacing total stations for monitoring. The camera beam 7 emitted by the industrial camera 3 passes through a beam combiner 4 and aligns with the viewing window 2. The beam combiner 4 is a semi-transparent mirror that transmits one wavelength of light while reflecting another, ensuring the camera beam 7 from the industrial camera 3 passes through it. The design selects a laser beam 8 emitted by the laser emitter 5 that can be reflected by the beam combiner 4. This ensures that the laser beam 8, after two reflections by the reflector 6 and the beam combiner 4, is coaxial and in the same direction with the camera beam 7 emitted by the industrial camera 3. This makes the line of sight (the camera beam 7 emitted by the industrial camera 3) completely coaxial with the laser beam's emission and reception axes, eliminating the need for additional inspection and calibration procedures, reducing errors, and improving efficiency.

[0014] Furthermore, the angle between the camera beam 7 generated by the industrial camera 3 and the beam combiner 4 is 45°, and the angle between the reflector 6 and the optical path generated by the laser emitter 5 is 45°. The mirror surface of the reflector 6 is parallel to the mirror surface of the beam combiner 4. This ensures that the laser 8 emitted by the laser emitter 5 is coaxial and in the same direction with the camera beam 7 of the industrial camera 3 after two 45° angle reflections, minimizing the path of the laser 8 and thus reducing laser 8 consumption, ensuring that the emission effect of the laser 8 does not deteriorate.

[0015] The terms "connection" and "fixing" appearing in this utility model description can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0016] In the description of this utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used only to indicate the orientation or positional relationship for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A vision and laser coaxial device, characterized in that: Includes a housing (1) with a viewing window (2), an industrial camera (3) is installed inside the housing (1), and the lens of the industrial camera (3) is aligned with the viewing window (2); A beam combiner (4) is provided between the lens of the industrial camera (3) and the viewing window (2), and the beam combiner (4) is tilted. The housing (1) also houses a laser emitter (5) and a reflector (6). The laser (8) generated by the laser emitter (5) is reflected twice by the reflector (6) and the beam combiner (4), and its optical path is coaxial and in the same direction as the optical path of the industrial camera (3).

2. The vision and laser coaxial device according to claim 1, characterized in that: The angle between the optical path generated by the industrial camera (3) and the beam combiner (4) is 45°, the angle between the reflector (6) and the optical path generated by the laser emitter (5) is 45°, and the mirror surface of the reflector (6) is set parallel to the mirror surface of the beam combiner (4).

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