White cell with variable optical path

Abstract

The utility model relates to the technical field of installation and adjustment of optical precision machinery, and provides an optical path variable White cell, which comprises a reflector 2, a reflector 4 and an adjusting structure, and the reflector 2 and the reflector 4 are arranged on the adjusting structure and move face to face or relatively under the action of the adjusting structure. The second reflecting mirror and the fourth reflecting mirror are driven to move oppositely or relatively through the adjusting structure, the curvature center distance between the second reflecting mirror and the fourth reflecting mirror is changed, the change of the detection optical path in the White cell is achieved, and different detection precision requirements are met. According to the utility model, only the third reflector is fixed on the inner wall of the White cell, and the rest reflectors can be adjusted according to requirements, so that flexible measurement on different conditions on site is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical precision machinery adjustment technical field, especially relate to a light path variable formula white pool. BACKGROUND

[0002] White pool realizes the multiple turn of light path through a main mirror and two secondary mirrors and improves the light path, and it is the commonly used light path structure in the measurement of trace gas, and its structure is as shown in Figure 1 The three mirrors of the traditional white pool light path detection system are fixed at the two ends of the pool inner wall, and the measurement light path is also a fixed value. The reflection times in the white pool are determined by , wherein the distance from the incident light to the center of B mirror is X, the distance from the center of curvature of A, A' mirror to the center of B mirror is a and b respectively, and the reflection times are n; the reflection times are determined by the distance between the incident light and the main optical axis and the distance between the center of curvature of the small mirror and the main optical axis, and the reflection mirror cannot be moved after installation, so that the detection light path is also a fixed value, flexible measurement under different conditions on site cannot be realized, in addition, the manual installation of the reflection mirror leads to a certain error of a and b, and the installation precision of the white pool cannot be guaranteed. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the above problems, the utility model provides the following technical scheme:

[0004] The utility model provides a light path variable formula white pool, including mirror two, mirror four and adjusting structure, mirror two, mirror four set up on adjusting structure and under the action of adjusting structure opposite or relative motion, through adjusting structure drive mirror two, mirror four opposite or relative motion, change the center of curvature spacing between mirror two, mirror four, realize the change of detection light path in white pool, adapt to different detection precision demand.

[0005] Further, the adjusting structure includes a lead screw and a driving member, the lead screw and the driving member are connected, and the driving member is configured to drive the lead screw to drive mirror two and mirror four to move towards each other or away from each other. Preferably, the driving member is a motor, and the adjustment precision is adjusted by the motor operation, which is higher than the manual installation precision.

[0006] Further, one end of the lead screw is provided with a positive direction thread, and the other end is provided with a reverse direction thread.

[0007] Further, the mirror two and the mirror four are respectively arranged at two ends of the lead screw and are threadedly connected with the lead screw.

[0008] Further, the mirror two and the mirror four are both concave spherical mirrors.

[0009] Further, the mirror one, the mirror three and the mirror five are further included, the mirror one is configured to reflect the light source to the mirror two, the mirror two is configured to reflect the reflected light from the mirror one or the mirror three to the mirror three, the mirror three is configured to reflect the reflected light from the mirror two or the mirror three to the mirror two or the mirror four, the mirror four is configured to reflect the reflected light from the mirror three to the mirror three or the mirror five, and the mirror five is configured to reflect the reflected light from the mirror four to the sensor.

[0010] Further, the distance between the curvature center of the mirror two and the curvature center of the mirror four and the curvature center of the mirror three is equal to the curvature radius of the mirror three.

[0011] Further, the angle of the mirror one and the mirror five is adjustable.

[0012] Further, the mirror three is fixed on the inner wall of the White cell, and only the mirror three is fixed on the inner wall of the White cell in the application, and the remaining mirrors can be adjusted according to requirements, so that flexible measurement of different situations on site is realized.

[0013] Further, the mirror one and the mirror five are arranged in the White cell.

[0014] The utility model has the following beneficial effects:

[0015] (1) the utility model discloses a adjusting structure drives mirror two, mirror four and moves towards each other or relative motion, changes the curvature center spacing between mirror two, mirror four, realizes the detection optical path change in the White cell, and different detection precision needs are adapted to;

[0016] (2) the driving part of adjusting structure in the utility model discloses a motor, and the precision of operation is adjusted through the motor, and the relative manual installation precision is higher;

[0017] (3) only the mirror three is fixed on the inner wall of the White cell in the utility model, and the remaining mirrors can be adjusted according to requirements, so that flexible measurement of different situations on site is realized. DRAWINGS

[0018] Figure 1 It is the light path diagram of the existing White cell.

[0019] Figure 2 It is the light path diagram of the utility model. CONCRETE IMPLEMENTING METHOD

[0020] The specific embodiments of the utility model are described in detail below in combination with the drawings, and it should be pointed out that the embodiments are only specific descriptions of the utility model and should not be regarded as limitations of the utility model, the purpose of the embodiments is to enable those skilled in the art to better understand and reproduce the technical scheme of the utility model, and the protection scope of the utility model should still be limited by the range defined in the claims.

[0021] The utility model provides a kind of optical path variable formula white pool, including mirror two 1, mirror four 2 and adjusting structure 3, the mirror two 1, mirror four 1 are set on adjusting structure 3 and under the action of adjusting structure 3, it is towards or relative motion, mirror two 1, mirror four 2 are driven by adjusting structure 3 towards or relative motion, change the curvature center spacing between mirror two 1, mirror four 2, realize the detection optical path change in white pool, adapt to different detection precision demand.

[0022] The adjusting structure 3 includes screw rod 31 and driving part 32, the screw rod 31 and driving part 32 are connected, and the driving part is configured to drive the screw rod to drive mirror two 1 and mirror four 2 to move towards or relative to each other. Preferably, the driving part 32 includes but is not limited to a motor, and the adjustment accuracy is adjusted by the motor. The relative manual installation accuracy is higher. One end of the screw rod 31 is provided with a positive direction thread 311, and the other end is provided with a reverse direction thread 312. The mirror two 1 and the mirror four 2 are respectively arranged at both ends of the screw rod 31 and are threadedly connected with the screw rod 31. Specifically, the mirror two 1 and the mirror four 2 are threadedly connected with the screw rod through a fixing member 4. One end of the fixing member 4 is connected with the mirror two 1 / mirror four 2, and the other end of the fixing member 4 is internally provided with an internal thread, which is threadedly connected with the screw rod 31. The mirror two 1 and the mirror four 2 are both concave spherical mirrors. The screw rod 31 can also be other devices that can drive the mirror two 1 and the mirror four 2 to move towards or relative to each other.

[0023] The white cell further comprises a mirror one 5, a mirror three 6 and a mirror five 7, the mirror one 5 is configured to reflect the light source 8 to the mirror two 1, the mirror two 1 is configured to reflect the reflected light from the mirror one 5 or the mirror three 6 to the mirror three 6, the mirror three 6 is configured to reflect the reflected light from the mirror two 1 or the mirror three 6 to the mirror two 1 or the mirror four 2, the mirror four 2 is configured to reflect the reflected light from the mirror three 6 to the mirror three 6 or the mirror five 7, and the mirror five 7 is configured to reflect the reflected light from the mirror four 1 to the sensor 9, wherein the sensor 9 is an infrared detector, and the light source is an infrared light source; the distance between the curvature centers of the mirror two 1 and the mirror four 2 and the curvature center of the mirror three 6 is equal to the curvature radius of the mirror three 6; the angle of the mirror one 5 and the mirror five 7 is adjustable; the mirror three 6 is fixed on the inner wall of the white cell, and the mirror one 5 and the mirror five 7 are arranged in the white cell; in the application, only the mirror three 6 is fixed on the inner wall of the white cell, and the other mirrors can be adjusted according to requirements to realize flexible measurement on different situations.

[0024] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to cover all changes and modifications falling within the scope of the present application.

[0025] It should be noted that the technical features not described in detail in the application can be realized by any existing technology.

Claims

1. A variable optical path White cell, characterized by, The adjusting structure comprises a screw rod and a driving member, the screw rod and the driving member are connected, and the driving member is configured to drive the screw rod to drive the mirror two and the mirror four to move towards or away from each other.

2. A variable optical path length White cell according to claim 1, wherein, The adjusting structure comprises a screw rod and a driving member, the screw rod and the driving member are connected, and the driving member is configured to drive the screw rod to drive the mirror two and the mirror four to move towards or away from each other.

3. A variable optical path length White cell according to claim 2, wherein, One end of the screw rod is provided with a positive direction thread, and the other end is provided with a reverse direction thread.

4. A variable optical path length White cell according to claim 3, wherein, The mirror two and the mirror four are respectively arranged at the two ends of the screw rod and are threadedly connected with the screw rod.

5. The variable optical path length White cell of claim 1 wherein, The mirror two and the mirror four are both concave spherical mirrors.

6. The variable optical path length White cell of claim 1 wherein, The adjusting structure comprises a screw rod and a driving member, the screw rod and the driving member are connected, and the driving member is configured to drive the screw rod to drive the mirror two and the mirror four to move towards or away from each other.

7. A variable optical path length White cell according to claim 6, wherein, The distance between the curvature centers of the mirror two and the mirror four and the curvature center of the mirror three is equal to the curvature radius of the mirror three.

8. A variable optical path length White cell according to claim 6, wherein, The angles of the mirror one and the mirror five are adjustable.

9. A variable optical path length White cell according to claim 6, wherein, The mirror three is fixed to the inner wall of the White cell.

10. The variable optical path length White cell of claim 6, wherein, The mirror one and the mirror five are arranged in the White cell.

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