Device for finding generatrix for measuring surface type of cylindrical mirror

Abstract

The device comprises a glass body and a light source, a light outlet of the light source is arranged inside the glass body, a reflecting mirror is further arranged inside the glass body, an area used for placing a cylindrical mirror to be measured is arranged at the top of the glass body, a projection screen is arranged above the glass body, and the projection screen is connected with the reflecting mirror. An included angle is formed between the reflecting mirror and a light beam emitted by the light source, so that the light beam emitted by the light source is reflected by the reflecting mirror and then enters an area for placing a cylindrical mirror to be measured at the top of the glass body. Through the arrangement of the glass body, the light source and the reflector, light beams can be reflected by the reflector and then enter the area, used for placing the cylindrical mirror to be measured, of the top of the glass body, and after passing through the cylindrical mirror, the generatrix is projected to the projection screen. According to the utility model, the accuracy and efficiency of finding a bus can be effectively improved, so that the accuracy and efficiency of surface type measurement are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of cylindrical mirror measurement, in particular to a device for finding generatrixes in measuring surface shapes of cylindrical mirrors. Background Art

[0002] In the prior art, a profilometer is often used to measure the surface of a cylindrical mirror. However, during the measurement process, it is necessary to find the generatrix, which can lead to large errors in finding the generatrix by physical positioning or eye alignment, and ultimately lead to low accuracy in surface measurement. Therefore, how to improve the accuracy of finding the generatrix when measuring the surface of a cylindrical mirror is a problem that needs to be solved in the prior art. Summary of the invention

[0003] Purpose of the utility model: The purpose of the utility model is to provide a device for finding generatrixes when measuring surface shape with a cylindrical mirror, which can improve the accuracy of finding generatrixes when measuring surface shape with a cylindrical mirror.

[0004] Technical solution: The device for measuring the surface shape of a cylindrical mirror and finding the generatrix described in the utility model comprises a glass body and a light source, wherein the light outlet of the light source is arranged inside the glass body, a reflector is also arranged inside the glass body, an area for placing the cylindrical mirror to be measured is arranged on the top of the glass body, a projection screen is arranged above the glass body, and the reflector forms an angle with the light beam emitted by the light source, so that the light beam emitted by the light source is reflected by the reflector and then incident on the area on the top of the glass body for placing the cylindrical mirror to be measured.

[0005] Furthermore, a turntable is included, and the glass body is arranged on the turntable, so that the glass body can be rotated more conveniently.

[0006] Furthermore, it also includes a base, and the turntable is arranged on the base.

[0007] Furthermore, it also includes an air pipe, one end of which extends into the vitreous body, and the other end is connected to an air pump; a hole is provided in the area on the top of the vitreous body for placing the cylindrical lens to be tested. In this way, negative pressure can be formed inside the vitreous body by pumping air, so that the cylindrical lens to be tested is sucked to the top of the vitreous body to prevent the cylindrical lens to be tested from moving, which can further improve the accuracy of finding the busbar.

[0008] Furthermore, a positioning block is provided at the edge of the area on the top of the glass body for placing the cylindrical mirror to be tested, so that it is more convenient to place the cylindrical mirror to be tested and the accuracy of finding the busbar can be further improved.

[0009] Furthermore, the reflector forms an angle of 45° with the light beam emitted by the light source.

[0010] Furthermore, the glass body is in the shape of a cube.

[0011] Beneficial effects: The utility model discloses a device for measuring surface shape and finding generatrix of cylindrical mirror, which has the following beneficial effects compared with the prior art:

[0012] The utility model is provided with a glass body, a light source and a reflector, so that the light beam is reflected by the reflector and then shot into the area on the top of the glass body for placing the cylindrical mirror to be measured, and the busbar is projected onto the projection screen after passing through the cylindrical mirror. In the actual surface measurement process, the standard lens and the cylindrical mirror to be measured can be placed in the area on the top of the glass body for placing the cylindrical mirror to be measured, respectively, and the light beam is reflected and shot into the projection screen to form a busbar on the projection screen. By aligning the busbar of the cylindrical mirror to be measured with the busbar of the standard lens, the busbar is found, and then the surface measurement is achieved. The utility model can effectively improve the accuracy and efficiency of finding the busbar, thereby effectively improving the accuracy and efficiency of surface measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the device in a specific embodiment of the utility model;

[0014] Figure 2 It is a partial cross-sectional view of the device in a specific implementation mode of the utility model;

[0015] Figure 3 It is a front cross-sectional view of the device in a specific implementation manner of the utility model. DETAILED DESCRIPTION

[0016] This specific embodiment discloses a device for measuring the surface shape of a cylindrical mirror and finding the generatrix, such as Figure 1 As shown, it includes a glass body 3 and a light source 5. The glass body 3 is in the shape of a cube, and the light source 5 includes a light outlet at the head and a tubular body. Figure 2 As shown, the light outlet of the light source 5 is arranged inside the glass body 3, and a reflector 4 is also arranged inside the glass body 3. An area for placing a cylindrical mirror 8 to be tested is arranged on the top of the glass body 3, and a projection screen 9 is arranged above the glass body 3. Figure 1 As shown, a positioning block 7 is provided at the edge of the area on the top of the glass body 3 for placing the cylindrical mirror 8 to be tested, which makes it easier to place the cylindrical mirror 8 to be tested and can further improve the accuracy of finding the busbar.

[0017] according to Figure 2 and Figure 3 It can be seen that the light outlet of the light source 5 is parallel to the bottom of the glass body 3, and the reflector 4 forms an angle of 45° with the bottom of the glass body 3, so that the light beam emitted from the light outlet of the light source 5 forms an angle of 45° with the reflector 4. In fact, the angle between the light beam emitted by the light source 5 and the reflector 4 can also be other angles, as long as the condition of "the light beam emitted by the light source 5 is reflected by the reflector 4 and then incident on the top of the glass body 3 for placing the cylindrical mirror 8 to be tested" is met.

[0018] In order to facilitate the rotation of the glass body 3, the device also includes a turntable 2. Figure 1 As shown, the glass body 3 is arranged on the turntable 2. A base 1 may also be included, and the turntable 2 is arranged on the base 1.

[0019] like Figure 1-Figure 3 As shown, the device further includes an air pipe 6, one end of which extends into the interior of the glass body 3, and the other end is connected to an air pump. A hole is provided in the area on the top of the glass body 3 for placing the cylindrical mirror 8 to be tested. In this way, negative pressure can be formed inside the glass body 3 by evacuating air, so that the cylindrical mirror 8 to be tested is sucked on the top of the glass body 3 to prevent the cylindrical mirror 8 to be tested from moving, which can further improve the accuracy of finding the generatrix.

[0020] Working process:

[0021] In the actual face shape measurement process, a standard lens is first placed on the top of the glass body 3 in the area for placing the cylindrical lens 8 to be measured. The light beam is reflected and then projected onto the projection screen 9. At this time, a line will appear on the projection screen 9. This line is the generatrix of the standard lens. The position of the generatrix of the standard lens is adjusted by rotating the glass body 3, and the face shape is repeatedly measured until it basically matches the standard face shape. At this time, the generatrix on the projection screen 9 is the standard generatrix, and this generatrix is ​​drawn as the reference line.

[0022] When measuring the cylindrical mirror 8 to be measured, it is placed on the top of the glass body 3 in the area for placing the cylindrical mirror 8 to be measured. The light beam is reflected and then projected onto the projection screen 9. At this time, a line will appear on the projection screen 9. This line is the generatrix of the cylindrical mirror 8 to be measured. The position of the generatrix is ​​adjusted by rotating the glass body 3 until the generatrix coincides with the reference line. At this time, the generatrix is ​​found, and then the surface measurement can be performed. This can effectively improve the accuracy and efficiency of finding the generatrix, thereby effectively improving the accuracy and efficiency of surface measurement.

[0023] The above is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A device for measuring the surface shape of a cylindrical mirror and finding the generatrix, characterized in that: The device comprises a glass body (3) and a light source (5), wherein a light outlet of the light source (5) is arranged inside the glass body (3), a reflector (4) is also arranged inside the glass body (3), an area for placing a cylindrical mirror (8) to be tested is arranged on the top of the glass body (3), a projection screen (9) is arranged above the glass body (3), and the reflector (4) forms an angle with a light beam emitted by the light source (5), so that the light beam emitted by the light source (5) is reflected by the reflector (4) and then incident on the area on the top of the glass body (3) for placing the cylindrical mirror (8) to be tested.

2. The device for finding generatrix of cylindrical mirror surface measurement according to claim 1, characterized in that: It also comprises a turntable (2), on which the glass body (3) is arranged.

3. The device for finding generatrix of cylindrical mirror surface measurement according to claim 2, characterized in that: It also comprises a base (1), and the turntable (2) is arranged on the base (1).

4. The device for finding generatrix of cylindrical mirror surface measurement according to claim 1, characterized in that: It also comprises an air tube (6), one end of which extends into the interior of the glass body (3) and the other end of which is connected to an air pump; a hole is provided in an area at the top of the glass body (3) for placing the cylindrical mirror (8) to be tested.

5. The device for finding generatrix of cylindrical mirror surface measurement according to claim 1, characterized in that: A positioning block (7) is provided at the edge of an area on the top of the glass body (3) for placing the cylindrical mirror (8) to be tested.

6. The device for finding generatrix of cylindrical mirror surface measurement according to claim 1, characterized in that: The reflector (4) forms an angle of 45° with the light beam emitted by the light source (5).

7. The device for finding generatrix of cylindrical mirror surface measurement according to claim 1, characterized in that: The glass body (3) is in the shape of a cube.

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