A desktop embedded schlieren apparatus

Abstract

The utility model discloses a desktop embedded stria instrument, including mirror body, mirror body mounting plate, projection system and projection system mounting plate, the mirror body is fixedly installed through mirror body mounting plate on desktop or mesa, the projection system is fixedly installed through projection system mounting plate on desktop or mesa, the mirror body mounting plate and projection system mounting plate bottom all are equipped with a plurality of installation hole for fixing stria instrument on desktop or mesa, the relative position of mirror body mounting plate and projection system mounting plate is determined according to stria instrument parameter and keeps invariant after fixed, the utility model discloses simple structure has reduced overall size and packing size, and the transportation and storage are convenient. The installation is flexible, can be fixed on desktop or other mesa according to demand, is not restricted by the base. Firmly, the relative position of mirror body and projection system keeps invariant after once adjustment, only needs to fine tune light path in subsequent use, and the operation is convenient. Can quick assembly and disassembly, has improved use efficiency and adaptability.

Description

Technical Field

[0001] This utility model relates to the field of schlieren device technology, specifically a desktop embedded schlieren device. Background Technology

[0002] Schlieren imaging is an optical experimental technique used to visualize and quantitatively analyze density gradient changes in transparent media. Based on the phenomenon of refraction, it reveals density variations in a medium by observing the deflection of light rays as the light passes through it. In a schlieren system, a beam of parallel light travels through the observed medium, such as a gas or liquid. As the light passes through the medium, its propagation path is slightly deflected due to the density variations present within it. These slight deflections are made visible in the image by using lenses, knife edges, and observation devices.

[0003] Schlieren systems mainly consist of a mirror, a projection system (comprising a camera, blade, light source, etc.), and their supporting base. Traditionally, the mirror and projection system are separate units, requiring the distance between them to be determined based on parameters, and the light path to be adjusted gradually after proper alignment – ​​a cumbersome process. While portable Schlieren integrates the mirror and projection system onto a single base, reducing length, they remain bulky and difficult for a single person to carry. Furthermore, their installation flexibility is insufficient, and the base's limitations prevent them from adapting to various tabletop mounting requirements. Utility Model Content

[0004] (I) Technical Issues

[0005] This utility model provides a desktop embedded schlieren scanner, which aims to solve the technical problems mentioned in the background art.

[0006] (II) Technical Content

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a desktop embedded schlieren instrument, including a mirror body, a mirror body mounting plate, a projection system, and a projection system mounting plate. The mirror body is fixedly mounted on a desktop or tabletop via the mirror body mounting plate, and the projection system is fixedly mounted on the desktop or tabletop via the projection system mounting plate. The bottom of both the mirror body mounting plate and the projection system mounting plate is provided with multiple mounting holes for fixing the schlieren instrument to the desktop or tabletop. The relative positions of the mirror body mounting plate and the projection system mounting plate are determined according to the parameters of the schlieren instrument and remain unchanged after fixing.

[0008] Furthermore, the microscope body includes a lens, a lens frame, a support structure, a protective cover, an adjustment slide, and a microscope body fixing seat; the adjustment slide is used to adjust the pitch and rotation of the lens around a vertical axis; the microscope body fixing seat is used to support the microscope body and meet the experimental space requirements.

[0009] Furthermore, the projection system includes a camera, a light source, a blade, a video output interface, a power input interface, and an adjustment knob; the projection system also includes a slide for adjusting the forward and backward movement of the projection system; the projection system mounting base is used to support the projection system and align the light source, camera, and blade with the axis of the mirror body.

[0010] Furthermore, the mirror mounting plate and the mirror body, as well as the projection system and the projection system mounting plate, are all detachably connected.

[0011] Furthermore, the mirror body and the mirror body mounting plate are connected through side threaded holes; the projection system and the projection system mounting plate are connected through side threaded holes.

[0012] (III) Technical Effects

[0013] Compared with existing technologies, this invention has the following advantages: It features a simple structure, reducing overall and packaging size, facilitating transportation and storage. Installation is flexible; it can be fixed to a desktop or other surface as needed, without being limited by a base. The fixation is secure; the relative positions of the mirror and projection system remain unchanged after a single adjustment, requiring only minor adjustments to the light path for subsequent use, making operation convenient. It can be quickly assembled and disassembled, improving efficiency and adaptability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the mirror body of a desktop embedded schlieren device according to this utility model.

[0015] Figure 2 This is a schematic diagram of the projection system of a desktop embedded schlieren camera according to this utility model.

[0016] As shown in the figure: 1. Mirror body; 2. Mirror body mounting plate; 3. Projection system; 4. Projection system mounting plate. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] Combined with appendix Figure 1 To be continued Figure 2 A desktop embedded schlieren scanner includes a mirror body 1, a mirror body mounting plate 2, a projection system 3, and a projection system mounting plate 4. The mirror body 1 is fixedly mounted on a desktop or tabletop via the mirror body mounting plate 2, and the projection system 3 is fixedly mounted on the desktop or tabletop via the projection system mounting plate 4. The bottom of both the mirror body mounting plate 2 and the projection system mounting plate 4 are provided with multiple mounting holes for fixing the schlieren scanner to the desktop or tabletop. The relative positions of the mirror body mounting plate 2 and the projection system mounting plate 4 are determined according to the parameters of the schlieren scanner and remain unchanged after fixing.

[0021] The microscope body 1 includes a lens, a lens frame, a support structure, a protective cover, an adjustment slide, and a microscope body fixing base; the adjustment slide is used to adjust the pitch and rotation of the lens around the vertical axis; the microscope body fixing base is used to support the microscope body 1 and meet the experimental space requirements.

[0022] The projection system 3 includes a camera, a light source, a blade, a video output interface, a power input interface, and an adjustment knob; the projection system 3 also includes a slide for adjusting the forward and backward movement of the projection system 3; the projection system mounting base is used to support the projection system 3 and align the light source, camera, and blade with the axis of the mirror body 1.

[0023] The mirror mounting plate 2 and the mirror body 1, as well as the projection system 3 and the projection system mounting plate 4, are all detachably connected. The mirror body 1 is connected to the mirror mounting plate 2 through a side threaded hole; the projection system 3 is connected to the projection system mounting plate 4 through a side threaded hole.

[0024] The working principle of this utility model is as follows: The working principle of this desktop embedded schlieren instrument is based on the classic schlieren optical system, which is existing technology. Its core lies in utilizing the phenomenon of refraction (deflection) that occurs when light passes through a transparent medium (such as gas) with uneven density, and then using a cutting edge to transform the invisible density changes into a visible image with contrasting light and dark areas. The entire optical path system consists of two core parts: the projection system 3 and the mirror body 1. The basic optical path flow is as follows:

[0025] A point light source located within projection system 3 emits light. After passing through optical elements (such as a collimating lens), the light becomes parallel light and exits projection system 3, projecting onto mirror body 1. The primary mirror in mirror body 1 focuses the incident parallel light onto its focal plane (i.e., the test area, usually located in the space above the mirror body mounting). The light then reflects back to mirror body 1 and becomes parallel again. When a density gradient exists in the test area (such as heat or different gases), the light will undergo a slight deflection as it passes through that area. The returning parallel light re-enters projection system 3 and is focused onto the blade plane. The blade acts as an aperture, cutting the focused light point. Light that is not deflected is partially blocked by the blade, while light that is deflected due to density changes is either more blocked by the blade (darkened) or passes through the blade more (brightened). Finally, the camera captures this change in brightness, forming a schlieren image representing the density distribution within the test area.

[0026] The innovation of this utility model lies not in the aforementioned optical principles, nor in the optical components inside the mirror body 1 and the projection system 3, but in integrating and fixing these two existing functional modules through a novel, baseless, desktop embedded installation structure (i.e., mirror body mounting plate 2 and projection system mounting plate 4), thereby improving portability, installation flexibility and ease of use.

[0027] The working process of this utility model is as follows:

[0028] 1. Installation and Fixing: Based on the product parameters of the schlieren instrument (mainly the lens focal length), determine the relative distance and position of the lens mounting plate 2 and the projection system mounting plate 4 on the desktop or tabletop; place the lens mounting plate 2 and the projection system mounting plate 4 in the determined positions, and use the mounting holes on their bottoms to make matching holes on the desktop to firmly fix them; connect and lock the lens 1 to the fixed lens mounting plate 2 through the threaded holes on its side; connect and lock the projection system 3 to the fixed projection system mounting plate 4 through the threaded holes on its side; at this point, the relative spatial position of the lens 1 and the projection system 3 has been fixed, forming a stable optical platform.

[0029] 2. Initial Light Path Adjustment: Turn on the light source of projection system 3; roughly adjust the adjustment slide on mirror body 1 to change the pitch and deflection angles of the lens. Simultaneously, it may be necessary to fine-tune the slide inside projection system 3 to ensure that the light spot emitted by the light source accurately illuminates the center of the lens on mirror body 1 and that the reflected light path correctly returns to projection system 3; finely adjust the blade on projection system 3 until a uniform background field and a clear blade-cut image are observed in the camera preview. This step is crucial for the imaging quality of the schlieren, but it is an existing technology operation.

[0030] 3. Conduct the experiment: Place the object or phenomenon to be tested (such as a lit candle, alcohol swab, hot or cold air flow, etc.) in the test area (i.e. the focusing area of ​​the light path) in front of the mirror body 1; due to the change in density of the medium in the test area, the light path is deflected, and the camera will capture the corresponding schlieren image in real time; observe, record or analyze the schlieren image by connecting to the video output of the projection system 3.

[0031] 4. Post-use processing: After the experiment, remove the test object; if the equipment needs to be moved, only the mirror body 1 and the projection system 3 can be removed from their respective mounting plates, while the mirror body mounting plate 2 and the projection system mounting plate 4 can be fixed on the table; since the relative positions of the mirror body 1 and the projection system 3 remain unchanged after being fixed by the mounting plates, there is no need to repeat the first step of installation and the second step of complex optical path adjustment when using it next time. You only need to turn on the equipment and make a very small optical path fine-tuning before it can be put into use immediately, which greatly improves the efficiency of use.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A desktop embedded schlieren camera, comprising a mirror body (1), a mirror body mounting plate (2), a projection system (3), and a projection system mounting plate (4), characterized in that: The mirror (1) is fixedly mounted on the desktop or tabletop via the mirror mounting plate (2), and the projection system (3) is fixedly mounted on the desktop or tabletop via the projection system mounting plate (4). The bottom of both the mirror mounting plate (2) and the projection system mounting plate (4) is provided with multiple mounting holes for fixing the schlieren instrument to the desktop or tabletop. The relative positions of the mirror mounting plate (2) and the projection system mounting plate (4) are determined according to the parameters of the schlieren instrument and remain unchanged after being fixed.

2. The desktop embedded schlieren scanner according to claim 1, characterized in that, The mirror body (1) includes a lens, a lens frame, a support structure, a protective cover, an adjustment slide, and a mirror body fixing seat; the adjustment slide is used to adjust the pitch and rotation of the lens around the vertical axis; the mirror body fixing seat is used to support the mirror body (1) and meet the experimental space requirements.

3. A desktop embedded schlieren scanner according to claim 1, characterized in that, The projection system (3) includes a camera, a light source, a blade, a video output interface, a power input interface, and an adjustment knob; the projection system (3) also includes a slide for adjusting the forward and backward movement of the projection system (3); the projection system mounting base is used to support the projection system (3) and align the light source, camera, and blade with the axis of the mirror body (1).

4. A desktop embedded schlieren scanner according to claim 1, characterized in that, The mirror mounting plate (2) and the mirror (1), as well as the projection system (3) and the projection system mounting plate (4), are all detachably connected.

5. A desktop embedded schlieren scanner according to claim 4, characterized in that, The mirror body (1) is connected to the mirror body mounting plate (2) through a side threaded hole; the projection system (3) is connected to the projection system mounting plate (4) through a side threaded hole.

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