CN114035299A - Bihan prism through-axis assembling and adjusting method - Google Patents
Bihan prism through-axis assembling and adjusting method Download PDFInfo
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- CN114035299A CN114035299A CN202111397298.0A CN202111397298A CN114035299A CN 114035299 A CN114035299 A CN 114035299A CN 202111397298 A CN202111397298 A CN 202111397298A CN 114035299 A CN114035299 A CN 114035299A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 239000011248 coating agent Substances 0.000 claims description 41
- 238000000576 coating method Methods 0.000 claims description 41
- 239000007888 film coating Substances 0.000 claims description 33
- 238000009501 film coating Methods 0.000 claims description 33
- 238000003384 imaging method Methods 0.000 claims description 18
- 230000001678 irradiating effect Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 230000004069 differentiation Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 235000009815 Momordica Nutrition 0.000 description 1
- 241000218984 Momordica Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011378 penetrating method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
The invention belongs to the technical field of optical design and assembly and adjustment test, and particularly relates to an Oldham prism through-axis assembly and adjustment method. When the optical axis of the four-dimensional adjustable center film-coated reticle is consistent with the optical axis of the internal focusing light tube, the collimation surface of the reticle is the film-coated surface, and parallel light emitted by the internal focusing light tube can penetrate through the reticle to irradiate the Pechan prism and form an image on the other internal focusing light tube, so that the assembly and adjustment errors caused by the parallel difference of the reticle can be effectively eliminated, the through-axis assembly and adjustment precision of the Pechan prism is effectively improved, and the method can be applied to the through-axis assembly and adjustment of all Pechan prisms.
Description
Technical Field
The invention belongs to the technical field of optical design and assembly and adjustment test, and particularly relates to an Oldham prism through-axis assembly and adjustment method.
Background
The Pechan prism is a composite prism, is composed of a half pentagonal prism and a Schmidt prism, and is mainly used for eliminating image rotation of an optical system. The rotation angle of the image caused by the rotation of the Pechan prism is equal to twice of the rotation angle of the Pechan prism, and the rotation direction of the image is the same as that of the prism. Generally, the Pechan prism is located in a rotating shaft system, and shaft penetrating installation and adjustment are needed to ensure the consistency of the Pechan prism optical axis and a despin mechanical rotating shaft. According to a common shaft penetrating method, the consistency assembly and adjustment of the optical axis of the four-dimensional adjustable reticle and the despin mechanical rotating shaft are realized through the four-dimensional adjustable reticle and the internal focusing light tube, the consistency assembly and adjustment of the optical axis of the four-dimensional adjustable reticle and the optical axis of the Pechan prism is realized through adjusting the posture of the Pechan prism and observing the Pechan prism by using the other internal focusing light tube, and therefore the shaft penetrating assembly and adjustment of the Pechan prism and the despin mechanical rotating shaft are realized. However, the parallel difference of the four-dimensional adjustable reticle itself can introduce a setup error to the through-axis setup of the Pechan prism, which leads to the reduction of the through-axis precision.
Disclosure of Invention
In view of this, the invention provides a new method for through-axis installation and adjustment of a Pechan prism, which can effectively eliminate installation and adjustment errors introduced by the parallel difference of a four-dimensional adjustable reticle and improve the precision of through-axis installation and adjustment of the Pechan prism.
In order to achieve the technical purpose, the invention adopts the following specific technical scheme:
a method for installing an Arhat prism into a rotary shaft system is realized by the following mechanisms:
a first internally focusing light pipe;
the four-dimensional adjustable center-splitting film coating reticle is fixed on an inner shaft of a rotary shaft system and can rotate along with the rotary shaft system;
a second inner focusing light pipe;
wherein: a reflecting film is arranged in the central area of the four-dimensional adjustable central film coating reticle, and a light-transmitting cross line is etched in the center of the reflecting film;
the debugging method comprises the following steps:
s101, fixing a rotary shaft system provided with a four-dimensional adjustable center-coating reticle between a first inner focusing light pipe and a second inner focusing light pipe through an outer seat of the rotary shaft system;
s102, observing the optical axis of the four-dimensional adjustable central film coating reticle by using a first internal focusing light tube, adjusting the posture of the four-dimensional adjustable central film coating reticle to ensure that the optical axis of the four-dimensional adjustable central film coating reticle is consistent with the mechanical rotating shaft of the rotating shaft system, and adjusting the posture of the first internal focusing light tube to ensure that the optical axis of the four-dimensional adjustable central film coating reticle is consistent with the optical axis of the four-dimensional adjustable central film coating reticle;
s103, the Poehan prism is arranged in an inner shaft of a rotary shaft system, and parallel light emitted by a first inner focusing light pipe is transmitted by a four-dimensional adjustable center coating reticle and the Poehan prism and then imaged on a second inner focusing light pipe to form a first image; irradiating the cross line of the four-dimensional adjustable center coating reticle by using a limited light source, and imaging the cross line on a second inner focusing light pipe after the cross line is transmitted by the four-dimensional adjustable center coating reticle and the Pechan prism to form a second image;
s104, rotating the inner shaft of the rotary shaft system; observing the circle drawing amount of the first imaging and the second imaging;
s105, adjusting the posture of the Pechan prism until the circle drawing quantity of the first imaging and the second imaging is minimum; namely, the optical axis of the Pechan prism is consistent with the mechanical rotating shaft of the rotating shaft system.
Further, the method for adjusting the posture of the four-dimensional adjustable center coating reticle to enable the optical axis of the reticle to be consistent with the mechanical rotating shaft of the rotating shaft system comprises the following steps:
s201, the first internal focusing light pipe emits parallel light, the parallel light is reflected by a four-dimensional adjustable central coating reticle and then is imaged on the first internal focusing light pipe to form a reflected image; irradiating the cross line of the four-dimensional adjustable central coating reticle by using a limited light source, and imaging the cross line on a first inner focusing light pipe after the cross line is transmitted by the four-dimensional adjustable central coating reticle to form a differential image;
s202, rotating an inner shaft of a rotary shaft system; observing the circle drawing amount of the reflection image and the differentiation image;
and S203, adjusting the posture of the four-dimensional adjustable center coating reticle until the circle drawing quantity of the reflection image and the differentiation image is minimum.
Further, the reflective film is a metal film.
Further, the shape of the reflection film is circular.
Further, the diameter of the reflecting film is half of the caliber of the first inner focusing light pipe and the second inner focusing light pipe.
Furthermore, the diameter of the four-dimensional adjustable central film coating reticle is not less than the caliber of the first inner focusing light tube and the second inner focusing light tube;
the four-dimensional adjustable center coating reticle is arranged in the inner shaft in the direction that the coating surface faces the Pechan prism.
By adopting the technical scheme, the invention can bring the following beneficial effects:
when the optical axis of the four-dimensional adjustable center film-coated reticle is consistent with the optical axis of the internal focusing light tube, the collimation surface of the reticle is the film-coated surface, and parallel light emitted by the internal focusing light tube can penetrate through the reticle to irradiate the Pechan prism and form an image on the other internal focusing light tube, so that the assembly and adjustment errors caused by the parallel difference of the reticle can be effectively eliminated, the through-axis assembly and adjustment precision of the Pechan prism is effectively improved, and the method can be applied to the through-axis assembly and adjustment of all Pechan prisms.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a four-dimensional adjustable center-coated reticle design according to an embodiment of the present invention;
FIG. 2 is a schematic view of the Poehan prism being mounted and adjusted through a shaft in the embodiment of the present invention;
wherein: 1. a first internally focusing light pipe; 2. a second inner focusing light pipe; 3. a four-dimensional adjustable center coating reticle; 4. a finite light source; 5. a Pechan prism; 6. a rotating shaft system; 7. an optical platform.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
In an embodiment of the present invention, a method for installing the momordica prism 5 into the rotating shaft system 6 is provided, where the method is implemented by the following mechanism, as shown in fig. 2, the mechanism includes:
a first internally focusing light pipe 1;
the four-dimensional adjustable center-separated coating reticle 3 is fixed on an inner shaft of the rotary shaft system 6 and can rotate along with the rotary shaft system 6;
a second inner focusing light pipe 2;
wherein: a reflecting film is arranged in the central area of the four-dimensional adjustable central film coating reticle 3, and a light-transmitting cross line is etched in the center of the reflecting film;
the debugging method comprises the following steps:
s101, fixing a rotary shaft system 6 provided with a four-dimensional adjustable center coating reticle 3 between a first inner focusing light pipe 1 and a second inner focusing light pipe 2 through an outer seat of the rotary shaft system;
s102, observing the optical axis of the four-dimensional adjustable central film coating reticle 3 by using the first inner focusing light tube 1, adjusting the posture of the four-dimensional adjustable central film coating reticle 3 to ensure that the optical axis of the four-dimensional adjustable central film coating reticle 3 is consistent with the mechanical rotating shaft of the rotating shaft system 6, and adjusting the posture of the first inner focusing light tube 1 to ensure that the optical axis of the four-dimensional adjustable central film coating reticle 3 is consistent with the optical axis of the four-dimensional adjustable central film coating reticle 3;
s103, the Poehan prism 5 is arranged in an inner shaft of a rotary shaft system 6, and the first inner focusing light pipe 1 emits parallel light which is transmitted by the four-dimensional adjustable center coating reticle 3 and the Poehan prism 5 and then is imaged on the second inner focusing light pipe 2 to form a first image; irradiating the cross line of the four-dimensional adjustable center coating reticle 3 by using a limited light source 4, and imaging the cross line on a second inner focusing light tube 2 after the cross line is transmitted by the four-dimensional adjustable center coating reticle 3 and a Pechan prism 5 to form a second image;
s104, rotating the inner shaft of the rotary shaft system 6; observing the circle drawing amount of the first imaging and the second imaging;
s105, adjusting the posture of the Pechan prism 5 until the circle drawing quantity of the first imaging and the second imaging is minimum; namely, the optical axis of the Pechan prism 5 is consistent with the mechanical rotating shaft of the rotating shaft system 6.
In this embodiment, the method for adjusting the posture of the four-dimensional adjustable center-coated reticle 3 to make the optical axis thereof consistent with the mechanical rotation axis of the rotation axis system 6 comprises:
s201, the first internal focusing light pipe 1 emits parallel light, the parallel light is reflected by a four-dimensional adjustable central coating reticle 3 and then is imaged on the first internal focusing light pipe 1 to form a reflected image; irradiating the cross line of the four-dimensional adjustable central film coating reticle 3 by using a limited light source 4, and imaging the cross line on a first inner focusing light pipe 1 after the cross line is transmitted by the four-dimensional adjustable central film coating reticle 3 to form a differential image;
s202, rotating an inner shaft of the rotary shaft system 6; observing the circle drawing amount of the reflection image and the differentiation image;
s203, adjusting the posture of the four-dimensional adjustable center coating reticle 3 until the circle drawing quantity of the reflection image and the differentiation image is minimum.
In the present embodiment, the reflective film is a metal film.
In the present embodiment, the shape of the reflective film is circular.
In this embodiment, the reflective film has a diameter that is half the aperture of the first and second internally focusing light pipes 1 and 2.
In the embodiment, the diameter of the four-dimensional adjustable central coating reticle 3 is not less than the caliber of the first inner focusing light pipe 1 and the second inner focusing light pipe 2;
the four-dimensional adjustable central coating reticle 3 is arranged in the inner shaft in the direction that the coating surface faces the Pechan prism 5.
Further, the embodiments of the present invention are as follows
1) As shown in fig. 1, the central area of the four-dimensional adjustable central film-coating reticle 3 is plated with a metal film, the diameter of the film-coating area is D0, a cross line is etched in the center, the diameter of the four-dimensional adjustable central film-coating reticle 3 is D1, the calibers of the first inner focusing light pipe 1 and the second inner focusing light pipe 2 are the same and are both D2, D0 is D2/2, and D1 is not less than D2;
2) as shown in fig. 2, a first inner focusing light pipe 1, a second inner focusing light pipe 2 and a rotary shaft system 6 are fixed on an optical platform 7, a four-dimensional adjustable center coating reticle 3 is arranged on the rotary shaft system 6, and a coating surface faces to the installation position of a Pechan prism 5;
3) rotating a rotary shaft system 6, irradiating a cross line of a four-dimensional adjustable central film coating reticle 3 by using a limited light source 4, adjusting the focal length of a first inner focusing light tube 1 to observe the circle drawing amount of a differentiated image of the four-dimensional adjustable central film coating reticle 3, adjusting the focal length of the first inner focusing light tube 1 to infinity to observe the circle drawing amount of an aligned image of the four-dimensional adjustable central film coating reticle 3, adjusting the posture of the four-dimensional adjustable central film coating reticle 3 to enable the circle drawing amount to be minimum, and enabling the optical axis of the four-dimensional adjustable central film coating reticle 3 to be consistent with the mechanical rotary shaft of the rotary shaft system 6;
4) adjusting the translation and the inclination of the first inner focusing light pipe 1 to enable the differential image and the collimation image to be positioned at the center of the first inner focusing light pipe 1, and enabling the optical axis of the first inner focusing light pipe 1 to be consistent with the optical axis of the four-dimensional adjustable center film coating reticle 3;
5) the Poehan prism 5 is arranged in a rotary shaft system 6, the focal length of a first inner focusing light pipe 1 is adjusted to infinity so that the first inner focusing light pipe emits parallel light, the parallel light is transmitted through a non-coating area of a four-dimensional adjustable central coating reticle 3 and is imaged on a second inner focusing light pipe 2 after being transmitted by the Poehan prism 5, the rotary shaft system 6 is rotated to observe the circle drawing amount of the collimated image, a limited light source 4 is used for irradiating the cross line of the four-dimensional adjustable central coating reticle 3, the cross line is imaged on the second inner focusing light pipe 2 after being transmitted through a coating area of the four-dimensional adjustable central coating reticle 3 and being transmitted by the Poehan prism 5, and the rotary shaft system 6 is rotated to observe the circle drawing amount of the cross-shaped differential image;
6) the inclination and the translation of the Pechan prism 5 are adjusted to ensure that the circle drawing amount of the collimated image and the cross-shaped differentiated image is minimum, at the moment, the optical axis of the Pechan prism 5 is consistent with the optical axis of the four-dimensional adjustable central film coating reticle 3, and the optical axis of the Pechan prism 5 is consistent with the mechanical rotating shaft of the rotating shaft system 6.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (6)
1. An Poehan prism through-shaft installation and adjustment method is used for installing a Poehan prism into a rotary shaft system, and is characterized in that the installation and adjustment method is realized through the following mechanisms, and the mechanisms comprise:
a first internally focusing light pipe;
the four-dimensional adjustable center-splitting film coating reticle is fixed on an inner shaft of a rotary shaft system and can rotate along with the rotary shaft system;
a second inner focusing light pipe;
wherein: a reflecting film is arranged in the central area of the four-dimensional adjustable central film coating reticle, and a light-transmitting cross line is etched in the center of the reflecting film;
the debugging method comprises the following steps:
s101, fixing a rotary shaft system provided with a four-dimensional adjustable center-coating reticle between a first inner focusing light pipe and a second inner focusing light pipe through an outer seat of the rotary shaft system;
s102, observing the optical axis of the four-dimensional adjustable central film coating reticle by using a first internal focusing light tube, adjusting the posture of the four-dimensional adjustable central film coating reticle to ensure that the optical axis of the four-dimensional adjustable central film coating reticle is consistent with the mechanical rotating shaft of the rotating shaft system, and adjusting the posture of the first internal focusing light tube to ensure that the optical axis of the four-dimensional adjustable central film coating reticle is consistent with the optical axis of the four-dimensional adjustable central film coating reticle;
s103, the Poehan prism is arranged in an inner shaft of a rotary shaft system, and parallel light emitted by a first inner focusing light pipe is transmitted by a four-dimensional adjustable center coating reticle and the Poehan prism and then imaged on a second inner focusing light pipe to form a first image; irradiating the cross line of the four-dimensional adjustable center coating reticle by using a limited light source, and imaging the cross line on a second inner focusing light pipe after the cross line is transmitted by the four-dimensional adjustable center coating reticle and the Pechan prism to form a second image;
s104, rotating the inner shaft of the rotary shaft system; observing the circle drawing amount of the first imaging and the second imaging;
s105, adjusting the posture of the Pechan prism until the circle drawing quantity of the first imaging and the second imaging is minimum; namely, the optical axis of the Pechan prism is consistent with the mechanical rotating shaft of the rotating shaft system.
2. The Pechan prism through-axis adjustment method according to claim 1, wherein: the method for adjusting the posture of the four-dimensional adjustable center coating reticle to enable the optical axis of the reticle to be consistent with the mechanical rotating shaft of the rotating shaft system comprises the following steps:
s201, the first internal focusing light pipe emits parallel light, the parallel light is reflected by a four-dimensional adjustable central coating reticle and then is imaged on the first internal focusing light pipe to form a reflected image; irradiating the cross line of the four-dimensional adjustable central coating reticle by using a limited light source, and imaging the cross line on a first inner focusing light pipe after the cross line is transmitted by the four-dimensional adjustable central coating reticle to form a differential image;
s202, rotating an inner shaft of a rotary shaft system; observing the circle drawing amount of the reflection image and the differentiation image;
and S203, adjusting the posture of the four-dimensional adjustable center coating reticle until the circle drawing quantity of the reflection image and the differentiation image is minimum.
3. The Pechan prism through-axis adjustment method according to claim 1, wherein: the reflective film is a metal film.
4. The Pechan prism through-axis adjustment method according to claim 1, wherein: the shape of the reflecting film is circular.
5. The Pechan prism through-axis adjustment method according to claim 4, wherein: the diameter of the reflecting film is half of the caliber of the first inner focusing light pipe and the second inner focusing light pipe.
6. The Pechan prism through-axis adjustment method according to claim 1, wherein: the diameter of the four-dimensional adjustable central coating reticle is not less than the caliber of the first inner focusing light tube and the second inner focusing light tube;
the four-dimensional adjustable center coating reticle is arranged in the inner shaft in the direction that the coating surface faces the Pechan prism.
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CN202111397298.0A CN114035299B (en) | 2021-11-23 | 2021-11-23 | Shaft penetrating adjustment method for Buchner prism |
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CN202111397298.0A CN114035299B (en) | 2021-11-23 | 2021-11-23 | Shaft penetrating adjustment method for Buchner prism |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008097720A (en) * | 2006-10-12 | 2008-04-24 | Pentax Corp | Optical axis adjusting device of optical pickup and optical axis adjusting method |
CN103226234A (en) * | 2013-04-01 | 2013-07-31 | 西安应用光学研究所 | Method for adjusting optical axis of Pechan prism |
CN109283652A (en) * | 2018-11-19 | 2019-01-29 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of Method of Adjustment of benhain prism racemization component optical axis |
US20210216003A1 (en) * | 2020-01-15 | 2021-07-15 | Coretronic Corporation | Opto-mechanical module and projection device |
-
2021
- 2021-11-23 CN CN202111397298.0A patent/CN114035299B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008097720A (en) * | 2006-10-12 | 2008-04-24 | Pentax Corp | Optical axis adjusting device of optical pickup and optical axis adjusting method |
CN103226234A (en) * | 2013-04-01 | 2013-07-31 | 西安应用光学研究所 | Method for adjusting optical axis of Pechan prism |
CN109283652A (en) * | 2018-11-19 | 2019-01-29 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of Method of Adjustment of benhain prism racemization component optical axis |
US20210216003A1 (en) * | 2020-01-15 | 2021-07-15 | Coretronic Corporation | Opto-mechanical module and projection device |
Non-Patent Citations (1)
Title |
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蒋世磊: "别汉棱镜的旋像精度分析和装校方法", 光电工程, no. 06, pages 52 - 58 * |
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