CN111879452A - Pen container type stress detection device - Google Patents
Pen container type stress detection device Download PDFInfo
- Publication number
- CN111879452A CN111879452A CN202010761527.1A CN202010761527A CN111879452A CN 111879452 A CN111879452 A CN 111879452A CN 202010761527 A CN202010761527 A CN 202010761527A CN 111879452 A CN111879452 A CN 111879452A
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- Prior art keywords
- triple prism
- stress detection
- light
- light source
- detection device
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- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 238000003384 imaging method Methods 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a pen container type stress detection device, which comprises a light source incidence unit, a light refraction unit and a receiving imaging system, and is characterized in that: the light refraction unit comprises two right-angle turning prisms and a triple prism, a sample to be detected is placed on one side of the triple prism for stress detection, the two right-angle turning prisms are respectively positioned on two sides of the triple prism, and the bevel edges of the two right-angle turning prisms are parallel to the other two sides of the triple prism; the light source incidence unit and the receiving imaging system are positioned below the triple prism in parallel. The stress detection device is a pen container type structure which is parallel to the light source incidence unit and the receiving imaging system and is positioned below the triple prism, the detection light path is inverted by 180 degrees when being refracted by the light refraction unit and then emitted, the size of the whole structure of the light path is greatly reduced, the device can be freely grafted in any detection station, the instrument cost is saved, and the practical production requirements are further met.
Description
Technical Field
The invention belongs to an optical detection device, and particularly relates to a pen container type stress detection device.
Background
When polarized light passes through a stressed sample, the emergent light of the polarized light generates phase difference, and the magnitude of the stress of the sample at the position where the polarized light is transmitted can be obtained by calculating the magnitude of the phase difference.
Stress detection needs a transmission light path, ensures that polarized light completely passes through a stress sample, or measures the surface stress condition of the stress model through a total reflection mode, the existing stress detection equipment takes a prism as a center, a detection sample is placed on the stress detection equipment, the left side is an incident light source, the right side is an imaging system, the whole detection light path is as shown in figure 1, the occupied volume is large, and then the size of the whole detection equipment is larger, so that the combination of the stress detection equipment and other detection stations can cause the conditions of difficult matching and inapplicability.
Disclosure of Invention
In view of the above, the present invention provides a pen-holder type stress detection device, which is capable of turning the incident and emergent light paths by adding a turning prism in the incident direction and the emergent direction, reducing the volume of the whole structure of the light path, freely grafting the light path to any detection station, and saving the cost of the instrument.
The specific technical scheme of the invention is as follows:
the utility model provides a pen container formula stress detection device, includes light source incident unit, photorefractive unit and receipt imaging system, its characterized in that: the light refraction unit comprises two right-angle turning prisms and a triple prism, a sample to be detected is placed on one side of the triple prism for stress detection, the two right-angle turning prisms are respectively positioned on two sides of the triple prism, and the bevel edges of the two right-angle turning prisms are parallel to the other two sides of the triple prism; the light source incidence unit and the receiving imaging system are positioned below the triple prism in parallel.
Further, the light source incidence unit sequentially comprises a light source, a collimating mirror and an optical filter along the light path direction.
Further, the receiving imaging system sequentially comprises an imaging lens and a camera along the direction of the light path.
Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a detection optical path structure of a conventional stress detection apparatus;
FIG. 2 is a schematic diagram of a light path structure of the pen container type stress detection device of the present invention;
wherein, 1 is the light source, 2 is collimation lens, 3 is the light filter, 4 is right angle turning prism, 5 is the prism, 6 is imaging lens, 7 is the camera, 8 is the sample that detects.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 2, the pen container type stress detection device of the present embodiment includes a light source incidence unit, a light refraction unit and a receiving imaging system, wherein the light refraction unit includes two right-angle turning prisms 4 and a triple prism 5, a sample 8 to be detected is placed on one side of the triple prism 5 for stress detection, the two right-angle turning prisms 4 are respectively located on two sides of the triple prism 5, and the bevel edges of the two right-angle turning prisms 4 are parallel to the other two sides of the triple prism 5.
Preferably, the light source incidence unit and the receiving imaging system are located below the triple prism in parallel, the light source incidence unit sequentially comprises a light source 1, a collimating mirror 2 and an optical filter 3 along the light path direction, and the receiving imaging system sequentially comprises an imaging lens 6 and a camera 7 along the light path direction.
In this embodiment, the light source 1 may be an LED or a laser, light emitted from the light source 1 is collimated by the first lens, the divergence angle of the light is reduced, a low-angle light beam is incident to a right-angle bottom side of the right-angle turning prism 4 on the left side of the triangular prism 5 through the filter, the incident light is totally reflected at two sides in the right-angle turning prism 4 and then incident to the side of the triangular prism 5, when the incident light is emitted, the light is emitted to the hypotenuse of the right-angle turning prism 5 through the right side of the triangular prism 5, is totally reflected twice in the hypotenuse and then emitted perpendicular to the right-angle bottom side of the right-angle turning prism, and then enters the imaging lens and the camera for imaging.
The pen container type stress detection device of the embodiment has the advantages that the light source incidence unit and the pen container type structure located below the triple prism in parallel with the receiving imaging system enable the detection light path to be inverted by 180 degrees after being refracted by the light refraction unit and then emit, further the size of the overall structure of the light path is greatly reduced, the device can be freely grafted in any detection station, the instrument cost is saved, and the practical production requirements are further met.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (3)
1. The utility model provides a pen container formula stress detection device, includes light source incident unit, photorefractive unit and receipt imaging system, its characterized in that: the light refraction unit comprises two right-angle turning prisms and a triple prism, a sample to be detected is placed on one side of the triple prism for stress detection, the two right-angle turning prisms are respectively positioned on two sides of the triple prism, and the bevel edges of the two right-angle turning prisms are parallel to the other two sides of the triple prism; the light source incidence unit and the receiving imaging system are positioned below the triple prism in parallel.
2. The pen container type stress detection device according to claim 1, wherein the light source incidence unit sequentially comprises a light source, a collimating mirror and a filter along a light path direction.
3. The pen barrel type stress detection device according to claim 1, wherein the receiving imaging system comprises an imaging lens and a camera in sequence along the light path direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761527.1A CN111879452A (en) | 2020-07-31 | 2020-07-31 | Pen container type stress detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761527.1A CN111879452A (en) | 2020-07-31 | 2020-07-31 | Pen container type stress detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111879452A true CN111879452A (en) | 2020-11-03 |
Family
ID=73206176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010761527.1A Withdrawn CN111879452A (en) | 2020-07-31 | 2020-07-31 | Pen container type stress detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111879452A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234828A (en) * | 2021-11-29 | 2022-03-25 | 北京航空航天大学 | High-temperature strain measuring device |
-
2020
- 2020-07-31 CN CN202010761527.1A patent/CN111879452A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114234828A (en) * | 2021-11-29 | 2022-03-25 | 北京航空航天大学 | High-temperature strain measuring device |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201103 |