CN112255779A - Large-caliber compact type Soire-Babinet compensator device - Google Patents
Large-caliber compact type Soire-Babinet compensator device Download PDFInfo
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- CN112255779A CN112255779A CN202011367433.2A CN202011367433A CN112255779A CN 112255779 A CN112255779 A CN 112255779A CN 202011367433 A CN202011367433 A CN 202011367433A CN 112255779 A CN112255779 A CN 112255779A
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- 230000003287 optical effect Effects 0.000 claims abstract description 78
- 239000013078 crystal Substances 0.000 claims abstract description 38
- 230000010287 polarization Effects 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 239000003292 glue Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/06—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the phase of light
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Abstract
The present disclosure provides a large-caliber compact type sodar-babinet compensator device, comprising: the actuator is arranged on the side edge mounting block of the shell and pushes the cross bar on the crystal optical element moving part to drive the long optical wedge and the bearing surface to move relatively along the central axis of the shell together, so that the total thickness of the long optical wedge and the short optical wedge is changed relative to the thickness of the parallel plate, and further the polarization state of a light beam transmitted from the through hole of the shell is changed. The actuator disclosed by the invention is arranged on the side edge mounting block on the shell of the Soraet-Babinet compensator device, so that the length of the compensator is effectively reduced.
Description
Technical Field
The disclosure relates to the field of precise polarized light regulation and measurement, in particular to a large-caliber compact type Sorbet-Babinet compensator device.
Background
The Soley-Babinet compensator is composed of a parallel flat plate, a short optical wedge and a long optical wedge, wherein the three are made of birefringent crystal materials, the short optical wedge and the parallel flat plate are fixed together through glue or optical cement, and the long optical wedge can move continuously relative to the short optical wedge through an actuator, so that the delay amount of a transmitted light beam is changed, and the Soley-Babinet compensator is equivalent to a dynamic wave plate. The classical design of a compensator consists of a birefringent long wedge and a fixed wedge mounted on a compensator plate. The method has the advantages of uniform and continuously adjustable delay in the whole clear aperture. Has important application in the fields of spectral analysis, polarization optics and the like.
In some applications of polarization optics, the aperture of the transmitted beam is large, a large aperture compensator (e.g., aperture greater than 25mm) is required, and to achieve such a large aperture, a long wedge is typically required to move 3 times the clear aperture, i.e., a large stroke actuator is required, which results in a large compensator volume. In addition, in order to adjust the included angle between the incident linearly polarized light and the optical axis of the crystal, a rotating frame is generally required to be added, which further increases the volume of the compensator. However, in the highly integrated optical system, the volume of each component is strictly limited, and therefore, a compensator having a large diameter and a compact structure is required.
Disclosure of Invention
Technical problem to be solved
The present disclosure provides a large-caliber compact type sodar-babinet compensator device to solve the above-mentioned technical problems.
(II) technical scheme
According to an aspect of the present disclosure, there is provided a large-caliber compact solitaire-babinet compensator apparatus, comprising:
a crystal optical element; the crystal optical element comprises a parallel flat plate, a short optical wedge and a long optical wedge; the short optical wedge is fixedly connected with the parallel flat plate; the optical axis direction of the short optical wedge is consistent with that of the long optical wedge and is vertical to that of the parallel flat plate;
the bearing surface of the crystal optical element moving component is fixedly connected with the long optical wedge;
the shell is fixedly connected with the base;
the actuator is arranged on the side edge mounting block of the shell and pushes a cross bar on the crystal optical element moving part to drive the long optical wedge and the bearing surface to move relatively along the central axis of the shell, so that the total thickness of the long optical wedge and the short optical wedge is changed relative to the thickness of the parallel flat plate, and the polarization state of a light beam transmitted from the through hole of the shell is changed.
In some embodiments of the present disclosure, the supporting part of the base is of a U-shaped structure, and the supporting part includes:
the mounting hole is arranged at the bottom of the support part, and the large-caliber compact type Soire-Babinet compensator device is fixed in the light path through the mounting hole;
the first semicircular hole and the second semicircular hole are arranged on two sides of the supporting part, the first rotating seat on the shell is fixed on the first semicircular hole, and the second rotating seat on the shell is fixed on the second semicircular hole
The first pressing block is connected with the first semicircular hole and used for pressing the first rotating seat;
and the second pressing block is connected with the second semicircular hole and used for pressing the second rotating seat.
In some embodiments of the present disclosure, the transmitted beam produces a positive phase delay when the perpendicular bisector of the long wedge is to the left of the perpendicular bisector of the short wedge;
when the perpendicular bisector of the long wedge and the perpendicular bisector of the short wedge coincide, no phase delay is generated in the transmitted beam;
when the perpendicular bisector of the long wedge is located to the right of the perpendicular bisector of the short wedge, the transmitted beam produces a negative phase delay.
In some embodiments of the present disclosure, the crystal optic moving part further comprises:
the bottom plate is connected with the bearing surface through a spring and is fixed on the shell; and moving the long optical wedge relative to the short optical wedge along the central axis direction of the long optical wedge through the actuator and the spring.
In some embodiments of the present disclosure, the diameters of the first and second rotating bases are equal in size and are coaxial.
In some embodiments of the present disclosure, the first swivel mount rotates relative to the first semi-circular bore; the second rotating seat rotates relative to the second semicircular hole so as to change an included angle of the incident polarized light relative to the optical axis of the crystal.
In some embodiments of the present disclosure, the first press block includes a first side through-hole, a second side through-hole, and a first semicircular hole; the second pressing block comprises a first side through hole, a second side through hole and a second semicircular hole;
the first semicircular hole and the first semicircular hole form a first circular hole, and the diameter of the first circular hole is consistent with that of the first rotating seat;
the second semicircular hole and the second semicircular hole form a second round hole, and the diameter of the second round hole is consistent with that of the second rotating seat.
In some embodiments of the present disclosure, the carrying surface of the crystal optical element moving part is provided with a long hole, and when the long wedge moves relative to the short wedge, the crystal optical element moving part does not affect the size of the light passing aperture of the soliton-babinet compensator device.
In some embodiments of the present disclosure, the housing comprises: a first side rail groove and a second side rail groove; the crystal optical element moving part includes: the first side guide rail and the second side guide rail are arranged on the bearing surface; the first side guide rail groove is connected with the first side guide rail in an embedded mode, and the second side guide rail groove is connected with the second side guide rail in an embedded mode.
(III) advantageous effects
From the technical scheme, the large-caliber compact type sorrel-babinet compensator device disclosed by the invention has at least one or part of the following beneficial effects:
(1) the actuator disclosed by the invention is arranged on the side edge mounting block on the shell of the Soraet-Babinet compensator device, so that the length of the compensator is effectively reduced.
(2) The first rotating seat and the second rotating seat are arranged on the shell of the Soire-Babinet compensator device, so that the shell rotates around the first semicircular hole and the second semicircular hole on the base supporting piece, and the effect of changing the included angle between incident polarized light and the crystal optical axis on the basis of not adding an additional rotating table is achieved.
(3) The design requirement of compact structure can be realized while the large caliber is ensured.
Drawings
Fig. 1 is a schematic diagram of a large-caliber compact solitaire-babinet compensator apparatus according to an embodiment of the disclosure.
Fig. 2 is a schematic diagram of the relative positions of crystal optical elements in the large-caliber compact solitaire-babinet compensator apparatus according to the embodiment of the disclosure.
Fig. 3 is a schematic diagram of the moving parts of the crystal optical element in the large-caliber compact solitaire-babinet compensator apparatus according to the embodiment of the disclosure.
Fig. 4 is a schematic view of the bottom of the moving part of the crystal optical element in the large-caliber compact solitaire-babinet compensator apparatus according to the embodiment of the disclosure.
Fig. 5 is a schematic diagram of a housing and an actuator in a large-caliber compact soliton compensator apparatus according to an embodiment of the disclosure.
Fig. 6 is another angle view of fig. 5.
Fig. 7 is a schematic view of a base in a large-caliber compact solitaire-babinet compensator apparatus according to an embodiment of the disclosure.
Detailed Description
The present disclosure provides a large-caliber compact type sodar-babinet compensator device, comprising: the actuator is arranged on the side edge mounting block of the shell and pushes the cross bar on the crystal optical element moving part to drive the long optical wedge and the bearing surface to move relatively along the central axis of the shell together, so that the total thickness of the long optical wedge and the short optical wedge is changed relative to the thickness of the parallel plate, and further the polarization state of a light beam transmitted from the through hole of the shell is changed. The actuator disclosed by the invention is arranged on the side edge mounting block on the shell of the Soraet-Babinet compensator device, so that the length of the compensator is effectively reduced.
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
Certain embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the disclosure are shown. Indeed, various embodiments of the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
In a first exemplary embodiment of the present disclosure, a large caliber compact soliton compensator apparatus is provided. Fig. 1 is a schematic diagram of a large-caliber compact solitaire-babinet compensator apparatus according to an embodiment of the disclosure. As shown in fig. 1, the disclosed large-caliber compact solitaire-babinet compensator apparatus includes: a crystal optical element 100, a crystal optical element moving member 200, a housing 300, a base 400, and an actuator 500.
Fig. 2 is a schematic diagram of the relative positions of crystal optical elements in the large-caliber compact solitaire-babinet compensator apparatus according to the embodiment of the disclosure. As shown in FIG. 2, crystal optic 100 includes a parallel plate 101, a short wedge 102, and a long wedge 103, where the parallel plate 101 and the short wedge 102 are secured together by glue or optical cement. The optical axis 102a of the short wedge 102 and the optical axis 103a of the long wedge 103 are aligned in the direction perpendicular to the optical axis 101a of the parallel plate 101.
When the perpendicular bisector 103b of the long wedge 103 is located to the left of the perpendicular bisector 102b of the short wedge 102, the transmitted beam produces a positive phase delay.
When the perpendicular bisector 103b of the long wedge 103 and the perpendicular bisector 102b of the short wedge 102 coincide, the transmitted beam does not generate a phase delay.
When the perpendicular bisector 103b of the long wedge 103 is located to the right of the perpendicular bisector 102b of the short wedge 102, the transmitted beam produces a negative phase delay.
Fig. 3 is a schematic diagram of the moving parts of the crystal optical element in the large-caliber compact solitaire-babinet compensator apparatus according to the embodiment of the disclosure. As shown in fig. 3, the crystal optical element moving member 200 includes a bearing surface 201, a spring 202, a bottom plate 203, a bar 204, a first side guide 205a, and a second side guide 205 b. The long wedge 103 is fixed on the bearing surface 201 of the crystal optical element moving part 200 by glue, the bearing surface 201 is connected with the bottom plate 203 by the spring 202, and the bottom plate 203 is fixed on the housing 300. The first and second side rails 205a and 205b are disposed on both sidewalls of the carrying surface 201. The bar 204 is disposed on any side wall of the bearing surface 201, and as shown in the figure, the bar 204 is disposed on the side wall of the bearing surface 201 where the first side rail 205a is located. The bar 204 and the first side rail 205a (or the second side rail 205b) are disposed in such a manner as not to interfere with each other. The long wedge 103 is movable relative to the short wedge 102 in the direction indicated by the arrow by means of an actuator 500 and a spring 202.
Fig. 4 is a schematic view of the bottom of the moving part of the crystal optical element in the large-caliber compact solitaire-babinet compensator apparatus according to the embodiment of the disclosure. As shown in fig. 4, a long hole 206 is opened on the bearing surface 201 of the crystal optical element moving member 200, and when the long wedge 103 moves relative to the short wedge 102, the crystal optical element moving member 200 does not affect the size of the light aperture of the soliley-babinet compensator.
Fig. 5 is a schematic diagram of a housing and an actuator in a large-caliber compact soliton compensator apparatus according to an embodiment of the disclosure. Fig. 6 is another angle view of fig. 5. As shown in fig. 5 and 6, the housing 300 includes: a housing 301, a through hole 302, a first rotary base 303a, a second rotary base 303b, and a side mounting block 304. The shell 301 is provided with a through hole 302, two ends of the through hole 302 are respectively provided with a first rotating seat 303a and a second rotating seat 303b, the side wall of the shell 301 is provided with a side edge mounting block 304, and the side wall vertically adjacent to the side wall is also provided with a sliding groove.
In the above-mentioned apparatus, the diameters of the first rotating base 303a and the second rotating base 303b are equal and coaxial, and the first rotating base 303a and the second rotating base 303b can rotate relative to the first semicircular hole 402a and the second semicircular hole 402b of the supporting part 401 of the base 400, so as to change the included angle of the incident polarized light relative to the optical axis of the crystal.
Fig. 7 is a schematic view of a base in a large-caliber compact solitaire-babinet compensator apparatus according to an embodiment of the disclosure. As shown in fig. 7, the base 400 includes a support member 401, first and second pressing pieces 403 and 404, and a mounting hole 405. The first press piece 403 includes a first side through hole 403a, a second side through hole 403b, and a semicircular hole 403 c. The second press piece 404 includes a first side through hole 404a, a second side through hole 404b, and a semicircular hole 404 c. The semicircular hole 403c and the semicircular hole 402a form a circular hole, and the diameter thereof is equal to the diameter of the first rotating base 303 a. The semicircular hole 404c and the semicircular hole 402b form a circular hole, the diameter of the circular hole is consistent with that of the second rotating seat 303b, and the large-caliber compact type Soire-Babinet compensator device is fixed in an optical path through the mounting hole (405).
The actuator 500 is mounted on the side mounting block 304 of the housing 300, and the actuator 500 pushes the bar 204 of the moving member 200 of the crystal optical element to make the long wedge 103 and the carrying surface 201 move relatively along the first side rail groove 305a and the second side rail groove 305b of the housing 300, so that the total thickness of the long wedge 103 and the short wedge 102 varies with respect to the thickness of the parallel plate 101, thereby changing the polarization state of the light beam transmitted from the through hole 302 of the housing 300. The housing 300 is fixed to the first and second semicircular holes 402a and 402b of the supporting member 401 of the base 400 by the first and second rotating bases 303a and 303b, and is pressed by the first and second pressing blocks 403 and 404, and the supporting member 401 is fixed by the bottom mounting hole 405.
So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.
From the above description, those skilled in the art should clearly recognize that the disclosed large-caliber compact solitaire-babinet compensator apparatus is provided.
In summary, the present disclosure provides a large-caliber compact type sodar-babinet compensator apparatus, which can realize a compact type compensator structure while ensuring a large caliber. In a high-integration optical system, strict limitation on the volume of each component can be met, and the structural design is more compact.
It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", and the like, used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present disclosure. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present disclosure.
And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (9)
1. A large caliber compact solitaire-babinet compensator apparatus comprising:
a crystal optical element (100); the crystal optical element (100) comprises a parallel plate (101), a short wedge (102) and a long wedge (103); the short optical wedge (102) is fixedly connected with the parallel flat plate (101); the optical axis (102a) of the short optical wedge (102) is consistent with the optical axis (103a) of the long optical wedge (103) in direction and is perpendicular to the optical axis (101a) of the parallel flat plate (101);
the crystal optical element moving component (200), wherein the bearing surface (201) of the crystal optical element moving component (200) is fixedly connected with the long wedge (103);
the shell (300) is fixedly connected with the base (400);
the actuator (500) is installed on a side installation block (304) of the shell (300), the actuator (500) pushes a cross bar (204) on the crystal optical element moving part (200) to drive the long optical wedge (103) and the bearing surface (201) to move relatively along the central axis of the shell (300) together, so that the total thickness of the long optical wedge (103) and the short optical wedge (102) is changed relative to the thickness of the parallel flat plate (101) to change the polarization state of a light beam transmitted from the through hole (302) of the shell (300).
2. The large aperture compact solitaire-babinet compensator apparatus as claimed in claim 1, wherein the support member (401) of the base (400) is of a U-shaped configuration, the support member (401) comprising:
a mounting hole (405) provided at the bottom of the support member (401), through which mounting hole (405) the large-caliber compact solitaire-babinet compensator apparatus is fixed into the optical path;
a first semicircular hole (402a) and a second semicircular hole (402b) which are arranged on two side surfaces of the supporting component (401), a first rotating seat (303a) on the shell (300) is fixed on the first semicircular hole (402a), and a second rotating seat (303b) on the shell (300) is fixed on the second semicircular hole (402b)
A first pressing block (403) connected with the first semicircular hole (402a) and used for pressing the first rotating seat (303 a);
and the second pressing block (404) is connected with the second semicircular hole (402b) and is used for pressing the second rotating seat (303 b).
3. The large aperture compact solitaire-babinet compensator apparatus of claim 1, wherein a transmitted beam produces a positive phase delay when the perpendicular bisector (103b) of the long wedge (103) is to the left of the perpendicular bisector (102b) of the short wedge (102);
when the perpendicular bisector (103b) of the long wedge (103) and the perpendicular bisector (102b) of the short wedge (102) coincide, no phase delay is produced in the transmitted beam;
when the perpendicular bisector (103b) of the long wedge (103) is located to the right of the perpendicular bisector (102b) of the short wedge (102), the transmitted beam produces a negative phase delay.
4. The large aperture compact soliry-babinet compensator apparatus according to claim 1, wherein said crystal optic element moving part (200) further comprises:
the bottom plate (203), the bottom plate (203) is connected with the bearing surface (201) through a spring (202), and the bottom plate (203) is fixed on the shell (300); and moving the long optical wedge (103) relative to the short optical wedge (102) along the central axis direction of the long optical wedge by the actuator (500) and the spring (202).
5. The large aperture compact soliry-babinet compensator apparatus according to claim 2, wherein the diameters of the first rotating base (303a) and the second rotating base (303b) are equal in size, and the first rotating base (303a) and the second rotating base (303b) are coaxial.
6. The large aperture compact soliry-babinet compensator apparatus according to claim 2, wherein said first rotating seat (303a) rotates relative to said first semicircular aperture (402 a); the second rotating seat (303b) rotates relative to the second semicircular hole (402b) so as to change the included angle of the incident polarized light relative to the optical axis of the crystal.
7. The large caliber compact solitaire-babinet compensator apparatus as claimed in claim 2, wherein said first press block (403) comprises a first side through hole (403a), a second side through hole (403b), and a first semicircular hole (403 c); the second pressing block (404) comprises a first side through hole (404a), a second side through hole (404b) and a second semicircular hole (404 c);
the first semicircular hole (403c) and the first semicircular hole (402a) form a first circular hole, and the diameter of the first circular hole is consistent with that of the first rotating seat (303 a);
the second semicircular hole (404c) and the second semicircular hole (402b) form a second circular hole, and the diameter of the second circular hole is consistent with that of the second rotating seat (303 b).
8. The large-caliber compact Soire-Babinet compensator apparatus according to claim 1, wherein said bearing surface (201) of said crystal optic element moving part (200) is formed with a long hole (206).
9. The large aperture compact solitaire-babinet compensator apparatus as claimed in claim 1, wherein said housing (300) comprises: a first side rail groove (305a) and a second side rail groove (305 b); the crystal optical element moving part (200) includes: a first side guide rail (205a) and a second side guide rail (205b) arranged on the bearing surface (201); the first side rail groove (305a) is fitted to the first side rail (205a), and the second side rail groove (305b) is fitted to the second side rail (205 b).
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CN103197410A (en) * | 2013-03-04 | 2013-07-10 | 中国科学院长春光学精密机械与物理研究所 | Oversized view field off-axis reflection system used for imaging spectrometer |
CN203275784U (en) * | 2013-05-14 | 2013-11-06 | 武汉特光科技有限公司 | Phase retarder with continuously adjustable broadband |
CN103558688A (en) * | 2013-10-23 | 2014-02-05 | 深圳大学 | Broadband double-refraction phase compensator |
CN105785565A (en) * | 2014-12-24 | 2016-07-20 | Ks光电有限公司 | Optical fiber polarized regulator and optical fiber polarization adjustment method by utilizing optical fiber polarized regulator |
CN105319705A (en) * | 2015-12-02 | 2016-02-10 | 中国航空工业集团公司洛阳电光设备研究所 | Double-optical wedge scanning device and photoelectric detection equipment |
CN108225742A (en) * | 2017-12-31 | 2018-06-29 | 苏州大学 | A kind of method and device for depolarizer performance detection |
CN110320624A (en) * | 2019-07-22 | 2019-10-11 | 中国人民解放军总参谋部第六十研究所 | Quasi- orthogonal wedge adjustment mechanism |
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