CN215985118U - Object distance measuring structure - Google Patents
Object distance measuring structure Download PDFInfo
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- CN215985118U CN215985118U CN202122547645.5U CN202122547645U CN215985118U CN 215985118 U CN215985118 U CN 215985118U CN 202122547645 U CN202122547645 U CN 202122547645U CN 215985118 U CN215985118 U CN 215985118U
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- horizontal mirror
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Abstract
The utility model relates to the technical field of optical imaging, in particular to an object distance measuring structure which comprises a base, a horizontal mirror base, a lifting driving piece, a sensor, a glass capacitance grid fixed grid ruler and a capacitance grid movable grid ruler, wherein the base is provided with a horizontal mirror base; the lifting driving piece is arranged on one side of the base and connected with the horizontal mirror base, the lifting driving piece is used for driving the horizontal mirror base to lift in the vertical direction, and the capacitive grating movable grating ruler is arranged on the horizontal mirror base; the glass capacitance grid fixed grid ruler is arranged on the other side of the base and used for measuring the vertical displacement of the capacitance grid movable grid ruler. The object distance measuring structure provided by the utility model uses the glass grid ruler to measure the vertical displacement of the grid movable grid ruler, namely the moving distance of the sensor, so as to obtain the changed back focal distance, further calculate the object distance of the optical system and improve the accuracy of the measuring result.
Description
Technical Field
The utility model relates to the technical field of optical imaging, in particular to an object distance measuring structure.
Background
In order to obtain an accurate measurement value of a measured object, the accuracy of back focal length change needs to be ensured, the traditional camera calculates the changed back focal distance through a stepping motor so as to calculate the object distance of an optical system, but the step loss of the stepping motor easily occurs, and the problem that the object distance of the optical system is inaccurate due to the error of the back focal distance caused by accumulated errors is solved, so that the object distance measurement accuracy can be reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide an object distance measuring structure which ensures the object distance measuring precision.
In order to solve the technical problems, the utility model adopts the technical scheme that: an object distance measuring structure comprises a base, a horizontal mirror base, a lifting driving piece, a sensor, a glass capacitance grid fixed grid ruler and a capacitance grid movable grid ruler;
the lifting driving piece is arranged on one side of the base and connected with the horizontal mirror base, the lifting driving piece is used for driving the horizontal mirror base to lift in the vertical direction, and the capacitive grating movable grating ruler is arranged on the horizontal mirror base;
the glass capacitance grid fixed grid ruler is arranged on the other side of the base and used for measuring the vertical displacement of the capacitance grid movable grid ruler.
Furthermore, the base is provided with a guide rail in sliding fit with the horizontal mirror base along the vertical direction.
Further, the lifting driving piece is a motor, an output shaft of the motor is parallel to the guide rail, and the motor is in threaded fit with the horizontal mirror base.
Furthermore, the lifting driving piece, the sensor and the glass grid positioning ruler are detachably connected with the horizontal mirror base through fasteners.
Further, the device also comprises a buffer component, wherein the buffer component is arranged between the grid moving ruler and the horizontal mirror base.
Further, the buffer component is a rubber pad.
The utility model has the beneficial effects that: the utility model provides an object distance measurement structure uses glass holding grid chi to measure the vertical displacement of holding grid movable grid chi promptly the displacement of sensor to obtain the back focal distance that changes, and then calculate optical system's object distance, the precision can be controlled within 0.002mm, has improved measuring result's accuracy.
Drawings
Fig. 1 is a schematic structural diagram of an object distance measuring structure according to an embodiment of the present invention;
description of reference numerals:
1. a base;
2. a horizontal lens base;
3. a lifting drive member;
4. a sensor;
5. a glass grid fixed ruler;
6. and a movable grid ruler of the capacitive grid.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The application scenario of this embodiment is as follows: the object distance of the optical system is calculated by calculating the changed back focal distance of the camera.
Referring to fig. 1, the object distance measuring structure of the present invention includes a base 1, a horizontal mirror base 2, a lifting driving member 3, a sensor 4, a glass grid fixed ruler 5 and a grid movable ruler 6;
the lifting driving piece 3 is arranged on one side of the base 1, the lifting driving piece 3 is connected with the horizontal mirror base 2, the lifting driving piece 3 is used for driving the horizontal mirror base 2 to lift in the vertical direction, and the grid-containing movable ruler 6 is arranged on the horizontal mirror base 2;
the glass capacitance grid fixed grid ruler 5 is arranged on the other side of the base 1, and the glass capacitance grid fixed grid ruler 5 is used for measuring the vertical displacement of the capacitance grid movable grid ruler 6.
From the above description, the beneficial effects of the present invention are: the utility model provides an object distance measurement structure uses glass holding grid chi to measure the vertical displacement of holding grid movable grid chi 6 and is the displacement distance of sensor 4 to obtain the back focal distance that changes, and then calculate optical system's object distance, the precision can be controlled within 0.002mm, has improved measuring result's accuracy.
In an alternative embodiment, the base 1 is provided with a guide rail in a vertical direction, which is in sliding fit with the horizontal mirror base 2.
From the above description, the guide rail is used to restrain the horizontal mirror base 2 from moving on the base 1 along the vertical direction, so as to ensure the measurement accuracy.
In an alternative embodiment, the lifting driving member 3 is a motor, an output shaft of the motor is parallel to the guide rail, and the motor is in threaded fit with the horizontal mirror base 2.
From the above description, the output shaft of the motor is in threaded fit with the screw hole on the horizontal mirror base 2, and when the output shaft of the motor rotates, the horizontal mirror base 2 is lifted and lowered in the vertical direction under the constraint of the guide rail, so that the displacement precision is ensured.
In an alternative embodiment, the lifting driving member 3, the sensor 4 and the glass grid sizing ruler 5 are detachably connected with the horizontal mirror base 2 through fasteners.
From the above description, it can be seen that the above components are quickly mounted and dismounted on the horizontal mirror base 2 by the fasteners, and the adjustment is convenient.
In an optional embodiment, the device further comprises a buffer component, and the buffer component is arranged between the grid movable ruler 6 and the horizontal mirror base 2.
From the above description, the buffer assembly plays a role of supporting and buffering the capacitive grating movable grating ruler 6 on the horizontal mirror base 2, and further ensures the measurement accuracy.
In an alternative embodiment, the cushioning component is a rubber pad.
As can be seen from the above description, the rubber pad support plays a role of supporting and buffering the grid movable ruler 6.
Referring to fig. 1, the working principle of the above embodiment is as follows: during the use, with lift driving piece 3, sensor 4 and glass holding grid fixed grid chi 5 all lock on horizontal microscope base 2 through the fastener, and it has set up the rubber pad to move between grid chi 6 and horizontal microscope base 2 at the holding grid, utilize the motor as lift driving piece 3, drive horizontal microscope base 2 through screw-thread fit's mode and go up and down along vertical direction on the guide rail of base 1, utilize glass holding grid fixed grid chi 5 to measure the vertical displacement that holds grid moved grid chi 6, can reach sensor 4's displacement, thereby obtain the back burnt distance that changes, and then calculate optical system's object distance.
In summary, the present invention provides an object distance measuring structure, in which a glass capacitance grid ruler is used to measure the vertical displacement of a capacitance grid movable grid ruler, i.e. the moving distance of a sensor, so as to obtain a changed back focal distance, and further calculate the object distance of an optical system, the precision can be controlled within 0.002mm, and the accuracy of the measurement result is improved. The guide rail is used for restricting the horizontal lens base to move on the base along the vertical direction, and the measuring precision is guaranteed. The output shaft of motor and the screw thread fit on the horizontal microscope base, when the output shaft of motor rotated, the horizontal microscope base was gone up and down along vertical direction under the restraint of guide rail, guaranteed the displacement precision. The components can be quickly mounted and dismounted on the horizontal mirror base through the fasteners, and adjustment is convenient. The buffer component plays a role in supporting and buffering the capacitive grating movable grating ruler on the horizontal lens base, and the measurement precision is further ensured. The rubber pad supports and plays a role in supporting and buffering the movable grid ruler of the capacitive grid.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (6)
1. An object distance measuring structure is characterized by comprising a base, a horizontal mirror base, a lifting driving piece, a sensor, a glass grid fixed ruler and a grid movable ruler;
the lifting driving piece is arranged on one side of the base and connected with the horizontal mirror base, the lifting driving piece is used for driving the horizontal mirror base to lift in the vertical direction, and the capacitive grating movable grating ruler is arranged on the horizontal mirror base;
the glass capacitance grid fixed grid ruler is arranged on the other side of the base and used for measuring the vertical displacement of the capacitance grid movable grid ruler.
2. The object distance measuring structure according to claim 1, wherein said base is provided with a guide rail in a vertical direction in sliding engagement with said horizontal mirror base.
3. The object distance measuring structure according to claim 2, wherein the lifting driving member is a motor, an output shaft of the motor is parallel to the guide rail, and the motor is in threaded engagement with the horizontal mirror base.
4. The object distance measuring structure according to claim 1, wherein the lifting driving member, the sensor and the glass grid sizing ruler are detachably connected with the horizontal mirror base through fasteners.
5. The object distance measuring structure according to claim 1, further comprising a buffer member disposed between said grating movable scale and said horizontal mirror base.
6. The object distance measurement structure according to claim 5, wherein said cushion member is a rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547645.5U CN215985118U (en) | 2021-10-21 | 2021-10-21 | Object distance measuring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122547645.5U CN215985118U (en) | 2021-10-21 | 2021-10-21 | Object distance measuring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215985118U true CN215985118U (en) | 2022-03-08 |
Family
ID=80512603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122547645.5U Active CN215985118U (en) | 2021-10-21 | 2021-10-21 | Object distance measuring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215985118U (en) |
-
2021
- 2021-10-21 CN CN202122547645.5U patent/CN215985118U/en active Active
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