CN101777480A - X-ray fluorescent screen with function of improving luminance and method thereof - Google Patents
X-ray fluorescent screen with function of improving luminance and method thereof Download PDFInfo
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- CN101777480A CN101777480A CN200910000451A CN200910000451A CN101777480A CN 101777480 A CN101777480 A CN 101777480A CN 200910000451 A CN200910000451 A CN 200910000451A CN 200910000451 A CN200910000451 A CN 200910000451A CN 101777480 A CN101777480 A CN 101777480A
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- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens
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Abstract
The invention relates to an X-ray fluorescent screen with the function of improving luminance and a method thereof. According to the invention, the X-ray fluorescent screen comprises a first layer provided with a first surface and a second surface, wherein the first layer comprises fluorescent material which is evenly distributed in the first layer; and the first surface comprises a microscope array formed by a plurality of microscope units which are concave inwards. By adopting the invention, the fluorescent screen which has higher luminance, less scattered beam and lower cost can be made by the existing fluorescent material.
Description
Technical field
The present invention generally relates to a kind of phosphor screen that is made of the fluorescent material thin layer, particularly a kind of phosphor screen that is subjected to excitation of X-rays to produce fluoroscopic image.
Background technology
At present, the known phosphor screen that is subjected to excitation of X-rays to produce fluoroscopic image is divided into two classes.
The first kind is that fluorescent material and transparent resin are mixed the back attached to a kind of luminescent screen that forms on the base material, also claims intensifying screen sometimes, as the intensifying screen of Kodak.Wherein fluorescent material is the tiny powder of particle diameter, with transparent resin evenly mix the back in the thin layer mode attached to substrate surface, fluorescent material is luminous behind excitation of X-rays, utilizes the difference of each point excitation intensity in the fluorescence coating to cause the luminous intensity difference, and then forms the fluoroscopic image of width of cloth light and shade contrast.Because this type of fluorescence coating light transmittance is limited, be in the light that the fluorescent material of light output bottom sends and be difficult to effective ejaculation, so the fluoroscopic fluorescence coating thickness of class is very limited, intercepting and capturing rate to excitation energy is lower, luminosity is also lower, improves this type of fluoroscopic brightness in decades and depends on the better fluorescent material of invention basically.In addition, tiny light-emitting particles lack of alignment in the fluorescence coating, phosphor screen output light directive property is very poor, when responding to the image of phosphor screen generation with receiving system, departs from positive scattered beam and is not only wasted, and can reduce the resolution and the contrast of image.
Second class is that fluorescent material is made carefully extremely several microns, grown to hundreds of microns transparent crystal buttress shaft, a large amount of this transparent crystal buttress shafts is parallel to each other, is closely aligned together, form a kind of phosphor screen of similar fibre optic plate, as the cesium iodide,crystal screen of Japanese shore pine photoelectricity.Form fluoroscopic each the root transparent crystal buttress shaft of this class and constituted a luminescence unit, utilize the difference of each luminescence unit excitation intensity to cause the luminous intensity difference, and then form the fluoroscopic image of width of cloth light and shade contrast.Because of the light transmittance of transparent crystal buttress shaft higher, in certain crystal column length range, the light majority that sends after each particle is excited in the crystal column can penetrate smoothly, thereby can use suitable increase crystal column length, the i.e. suitable intercepting and capturing rate that increases the method raising of fluorescence coating thickness to excitation energy, and then raising screen brightness.At present, under equal shooting condition, this type of fluoroscopic brightness is apparently higher than first kind phosphor screen.But the second class phosphor screen production technology harshness, production cost is very high; Poor for applicability to fluorescent material, can not use and can't make the transparent crystal buttress shaft, but the higher fluorescent material of conversion efficiency; The directive property of output light is also relatively poor, and scattered beam is not only wasted, and the problem of reduction image resolution ratio and contrast still exists.
Therefore, need so a kind of XRF screen, its manufacturing process is simple relatively, cost is lower, and can provide higher brightness, better pictures resolution and contrast with existing fluorescent material.
Summary of the invention
In view of above-mentioned prior art problems and deficiency, the present invention aims to provide that a kind of brightness is higher, scattered beam is less, cost is lower, can be suitable for most fluorescent materials screens.
According to an aspect of the present invention, a kind of XRF screen is provided, described XRF screen comprises: have relative first and second ground floor, described ground floor comprises the fluorescent material that is evenly distributed in the described ground floor, and described first face comprises the micro mirror array that is made of a plurality of micro mirror unit that concave.According to embodiment of the present invention, described micro mirror unit is selected from by falling the group that polygonal pyramid, inverted cone, concave spherical surface and concave paraboloid and combination thereof form, and wherein the area of overlooking of each micro mirror unit should be less than the area of the pixel that will describe image.Especially and preferably, described micro mirror unit is 45 ° and falls rectangular pyramids, and described 45 ° of base length of falling rectangular pyramid are about 20 to about 200 microns, and the thickness of described ground floor is about 50 to about 500 microns.
Also comprise according to XRF of the present invention screen being attached to described second reflector, the effect in reflector is the light reflected back front the directive phosphor screen back side, the brightness in increase phosphor screen front.And the basic unit that is attached to described reflector, be used to support fragile fluorescent material thin layer.
According to embodiment of the present invention, the every bit in the micro mirror unit on described first had both been launched also reflection ray of light when work.A plurality of micro mirror unit of described micro mirror array can be overlooked area equal and opposite in direction and proper alignment.In more embodiment, a plurality of micro mirror unit of described micro mirror array also can be overlooked slightly difference and arrange by various rules of area size.Especially and preferably, described micro-mirror array surfaces is higher in phosphor screen stimulated luminescence wave-length coverage internal reflection rate.
More specifically, in a preferred embodiment, fluorescent material and the mixed uniformly fluorescence thin layer of transparent resin surface make cave inward one by one, size is small 45 ° fall rectangular pyramid, 45 ° of bottom surfaces of falling rectangular pyramid be square, 45 ° intersect for about 45 ° each inclined plane and the bottom surface of rectangular pyramid, relatively independent light output unit of each 45 ° of formation of falling the rectangular pyramid, both direction closely is covered with this microprism luminescence unit in length and breadth on edge, fluorescence thin layer surface, forms a microprism luminous matrix.
The be stimulated light of back output of the micromirror matrix formula phosphor screen of making by method provided by the present invention is direct light and surface reflection sum.Fluorescence coating internal structure that the present invention uses and first kind phosphor screen are approximate, the similar existing first kind phosphor screen of direct light part, because of first kind phosphor screen output directive property not strong, the luminosity of screen front face normal will direction and approximate with the luminosity of normal angular direction at 45 is so micromirror matrix formula phosphor screen is approximately equal with first kind phosphor screen positive direct projection luminosity under identical, the equal shooting condition of fluorescence coating material and average thickness.Always some is in a lot of point reflections of same micro mirror unit to screen front face normal will and proximal direction thereof to the light that sends from micro mirror surface any point, reflection can be greater than direct light partly when the microprism surface reflectivity is higher to the light total amount of the normal of whole face and proximal direction thereof, thus micromirror matrix formula phosphor screen under equal conditions the luminosity in front double above than existing first kind phosphor screen.
Though the existing second class phosphor screen is than first kind screen brightness height, but micromirror matrix formula phosphor screen provided by the invention is lower than under the fluoroscopic situation of second class at the direct projection luminosity, recessed surface reflection by micro-mirror structure, add to use to cause second class phosphor screen fluorescent material that can't use, that energy conversion efficiency is higher, realized being higher than the fluoroscopic purpose of second class at the normal and the proximal direction luminosity thereof of whole face because of not making the transparent rules crystal.And micromirror matrix formula phosphor screen employing process according to the present invention is simple relatively, little duplication process that production efficiency, rate of finished products are all higher, and the high-leveled and difficult acicular crystal screen growth technique that has replaced the second class phosphor screen to adopt has the low advantage of production cost.
The invention has the beneficial effects as follows, use existing fluorescent material, produce that a kind of brightness is higher, scattered beam is less, lower-cost phosphor screen.
Description of drawings
In order to understand the mode that realizes embodiment of the present invention,, the more concrete description of the various different embodiments of the present invention who sketches above will be provided by with reference to appended accompanying drawing.What should be appreciated that these accompanying drawings describe only is the typical embodiment of the present invention, these embodiments are not necessarily drawn in proportion, and therefore can not think limitation of the scope of the invention, by using accompanying drawing, to describe and explain embodiment of the present invention with extra feature and details, wherein:
Fig. 1 is the schematic diagram of the prism matrix of XRF screen according to an embodiment of the invention.
Fig. 2 is a fluoroscopic cutaway view according to another embodiment of the invention.
Fig. 3 is the vertical view of prism unit according to an embodiment of the invention.
Fig. 4 is the cutaway view of Fig. 3, illustrates particularly according to direct light in the prism unit of one embodiment of the invention and reverberation.
Embodiment
Following description and accompanying drawing show detailed embodiment of the present invention, are enough to make those skilled in the art can put into practice them.Other embodiments can comprise structure, process and other changes.The part of some embodiments and feature can be included in the part and feature of other embodiments, perhaps can be replaced by the part of other embodiments and feature.The scope of embodiment of the present invention contains the scope of claims, and all available equivalents of these claims.Here, represent the indivedual or all of these embodiments of the present invention with term " invention ", only be for convenience, but not intention will be automatically with should with scope be restricted to the notion (if in fact disclose more than invention) of any other invention or invention.
Before describing this method, system and material, be appreciated that the disclosure is not limited to described ad hoc approach, system and material, because these can change.It is also understood that the term that uses only is used to describe the purpose of particular version or embodiment in this description, and do not plan limited field.
At first with reference to Fig. 1, Fig. 1 is the schematic diagram of the micromirror matrix 101 of XRF screen 100 according to an embodiment of the invention.As shown in Figure 1, the surface according to XRF screen 100 of the present invention comprises the array 101 that a plurality of micro mirrors 102 are formed, relatively independent light output unit of each micro mirror 102 formation.Structure and concrete principle thereof about each micro mirror will be carried out concrete description with reference to Fig. 3 and 4 in the back.Both direction closely is covered with this micro mirror light output unit in length and breadth on edge, phosphor screen 100 surface, thereby forms a micro mirror luminous matrix.
In one embodiment, fluorescent material and transparent resin evenly can be mixed the fluorescence coating that constitutes phosphor screen 100 of the present invention.In order to improve the brightness of phosphor screen 100, according to the present invention, fluorescent material should select energy intercepting and capturing rate height, fluorescent energy transfer ratio height, emission wavelength for use and reception partly matches, at the high material of stimulated luminescence wave-length coverage internal reflection rate, as the zinc-cadmium sulfide of silver-doped, the gadolinium oxysulfide of doping lanthanide series.Transparent resin should be selected anti-X ray for use, and at the stimulated luminescence wave-length coverage iuuminting rate of the fluorescent material material high with stability, as the acrylic resin that UV solidifies, add-on type liquid silica gel.Yet, it should be appreciated by those skilled in the art that various fluorescent materials and transparent resin known or future development all may be applicable to the present invention in this area, and the present invention is unrestricted in this regard.
Go out as shown in Figure 1, a plurality of micro mirror unit 102 of described micro mirror array 101 are along both direction proper alignment in length and breadth.Yet, it will be understood by those skilled in the art that the present invention is not limited to this.In other embodiments, a plurality of micro mirror unit of described micro mirror array also can be arranged or the dislocation arrangement by translation-angle.
In Fig. 1, each micro mirror unit is shown as and is of similar shape and size, yet described micro mirror array can also comprise the micro mirror unit with different size.In addition, described micro mirror array can also comprise the micro mirror unit of different geometric types.
Go out as shown in Figure 1, each micro mirror unit 102 is constituted as and inwardly concaves, thereby strengthens mutually from the light that recessed face reflected of micro mirror unit 102, makes the brightness of phosphor screen 100 to be improved.For example, each micro mirror unit 102 be constituted as cave inward, the small prism of falling the rectangular pyramid of size, bottom surface that should the prism of falling the rectangular pyramid be square, each inclined plane of the prism of falling the rectangular pyramid and bottom surface about 45 ° crossing.In one embodiment, the base length of this prism of falling the rectangular pyramid can be about 20 to about 200 microns.Those skilled in the art can understand, in other embodiments, each micro mirror unit 102 can be for falling polygonal pyramid, inverted cone, concave spherical surface and concave paraboloid, it perhaps is the combination of above-mentioned shape, as long as the surface of micro mirror unit 102 is the form that caves inward, promptly can realizes purpose of the present invention and fall within the scope of the present invention.What deserves to be mentioned is that it not is that every part on surface of forming the unit 102 of sunken inside all is recessed or smooth that the surface of unit 102 is the form that caves inward, do not get rid of and adopt partly or entirely protruding surface to form the described form that caves inward.Preferably, the area of overlooking of each micro mirror unit 102 should be less than the area of the pixel that will describe image.
According to the preferred embodiments of the invention, the every bit in the micro mirror unit 102 both can be when work owing to the existence of fluorescent material stimulated emission light, can also reflection ray.Like this, the stimulated emission light and the reflection ray of each micro mirror unit 102 strengthen mutually, can improve the brightness of phosphor screen 100 further, realize purpose of the present invention.Especially and preferably, the reflectivity of described micro mirror array 101 surfaces in phosphor screen stimulated luminescence wave-length coverage is higher, thereby can increase the output intensity of phosphor screen 100 better, improve brightness.
Referring now to Fig. 2, Fig. 2 is the cutaway view of phosphor screen 200 according to another embodiment of the invention.Go out as shown in Figure 2, XRF screen 200 comprises the structure of layering.The ground floor 201 of phosphor screen 200 can be structure as described above, that is, ground floor 201 has relative first 211 and second 221, and described first 211 comprises by a plurality of edges micro mirror array of constituting of the both direction micro mirror unit of closely arranging in length and breadth.Notice that as top each micro mirror unit is constituted as and inwardly concaves, make to strengthen mutually, thereby the brightness of phosphor screen 200 is improved from the light that recessed face reflected of micro mirror unit.According to the preferred embodiments of the invention, each micro mirror unit be constituted as cave inward, the small prism of falling the rectangular pyramid of size, intersect for about 45 ° each inclined plane of the prism of falling the rectangular pyramid and bottom surface, and the bottom surface constitutes square.In order to reach better effect, the size of the pixel that the bottom surface length of side of a prism unit of falling the rectangular pyramid should need be differentiated less than the expection image.According to one embodiment of the invention, the bottom surface length of side of the prism unit of falling the rectangular pyramid can be less than half of a Pixel Dimensions need differentiating of expection image.
According to one embodiment of the invention, described ground floor 201 comprises transparent resin and the fluorescent material that is evenly distributed in the described transparent resin.Schematically show the fluorescent material that is distributed in the ground floor in the accompanying drawings, but those skilled in the art should understand that, this indicative icon only is to set forth explanation for convenience, and also limits size, distribution and the fluorescent material of fluorescent material and the structure and the volume relationship of other materials never in any form.According to the preferred embodiments of the invention, fluorescent material should be big as far as possible with the ratio of the volume of transparent resin in this ground floor 201, and do not allow air gap in this ground floor 201.According to the preferred embodiments of the invention, be constituted as in micro mirror unit under the situation of the prism of falling the rectangular pyramid, the particle diameter of fluorescent material should be enough little, to guarantee the fineness of each triangular ramp of microprism.Preferably, be constituted as in the embodiment of the prism of falling the rectangular pyramid in micro mirror unit, the height of described microprism can be less than 20% of described first fluorescence coating, 201 maximum ga(u)ges, and the thickness of described ground floor can be about 50 to about 500 microns.Certainly, layer thickness of the present invention can be other value, and the ratio of micro mirror unit height and ground floor thickness also can adopt other suitable values according to different application or requirement.
As shown in Figure 2, described XRF screen 200 can also comprise reflector 202.Described reflector 202 is attached to second 221 of described ground floor 201, and described reflector 202 can be incorporated into basic unit 203 again.According to the preferred embodiments of the invention, the stimulated luminescence wave-length coverage internal reflection rate height that described reflector 202 requires at fluorescence coating, X ray penetrance height.Preferably, generally can adopt aluminium coated to constitute described reflector 202.Certainly, it should be appreciated by those skilled in the art that and to select other materials to constitute this reflector 202, and the present invention is unrestricted in this regard.Comprise base material in the described basic unit 203.In order to improve the reliability of phosphor screen 200, this base material should be selected X ray penetrance height, material that mechanical strength is high for use.Preferably, can adopt the fine plate of carbon.Certainly, it should be appreciated by those skilled in the art that and to select other materials to constitute this basic unit 203, and the present invention is unrestricted in this regard.
Micro-mirror structure and the present invention who describes in detail according to the preferred embodiments of the invention with reference to Fig. 3 and Fig. 4 improves the concrete principle of XRF screen brightness below.Fig. 3 is the vertical view of prism unit according to an embodiment of the invention, and Fig. 4 then is the cutaway view of Fig. 3, illustrates direct light and reverberation according to the prism unit of one embodiment of the invention particularly.
As mentioned above, each micro mirror unit is constituted as concave type, the arbitrfary point of the recessed face of micro mirror unit can be owing to the existence of fluorescent material stimulated emission light, can also reflection ray, thus make fluoroscopic brightness further be enhanced.If make described micro mirror unit higher in phosphor screen stimulated luminescence wave-length coverage internal reflection rate, the stimulated emission light and the reflection ray of each micro mirror unit strengthen mutually, and will be of value to fluoroscopic brightness increases.
By above description as can be known, if can make the direct light and the catoptrical compound light intensity maximization of micro mirror unit, both can realize purpose of the present invention.Go out as shown in Figure 3, each micro mirror unit 300 according to the preferred embodiments of the invention is constituted as the prism of falling the rectangular pyramid, this rectangular pyramid prism has four inclined planes 301,302,303,304, and each inclined plane and bottom surface form about 45 a ° crossing angle.A common light emission and the reflecting surface that caves inward that form in these four inclined planes.
Refer again to the cutaway view of Fig. 4 about this micro mirror unit.Because each micro mirror unit 400 can comprise equally distributed fluorescent material, therefore can export the direct light 401 that the fluorescent material excited target is sent by micro mirror unit 400.In addition, have four inclined planes owing to be configured the micro mirror unit 400 of the prism of falling the rectangular pyramid, therefore, this micro mirror unit 400 can also be exported the surface reflection 402 that is reflected by each inclined plane.Those skilled in the art are not difficult to find out that the light of output is direct light and surface reflection sum after being stimulated by the made microprism matrix form phosphor screen of the present invention.
Particularly with reference to Fig. 4, because the luminosity of the front face normal will direction on each inclined plane of the prism of falling the rectangular pyramid 400 and approximate with the luminosity of normal angular direction at 45, so the matrix form phosphor screen that is made of microprism 400 approximately equates with the positive direct projection luminosity of first kind phosphor screen under identical with average thickness, the equal shooting condition of fluorescence coating material.
Further, because fluorescent material is luminous towards all directions, and the light that sends from microprism 400 surperficial any points always some is in normal and the proximal direction thereof of other three inclined-planes reflection of same microprism unit to whole face, therefore reflection can be greater than direct light partly when the microprism surface reflectivity is higher to the light total amount of the normal of whole face and proximal direction thereof.For example, the light 401 ' that the fluorescent material of a working point becomes the direction at 45 degree angles to be sent with the normal with this surface 403 on the inclined plane 403 of microprism 400 will inevitably be by another inclined plane 404 reflections to the direction that becomes 45 degree angles with these surface 404 normals, in other words, light 401 ' is tilted the normal direction of face 404 reflections to whole face, forms effectively reflection output light 402 '.Similarly, the light that the fluorescent material of a working point becomes the direction at 45 degree angles to be sent with the normal with this surface 404 on the inclined plane 404 of microprism 400 also will inevitably be tilted the normal direction of face 403 reflections to face, forms reflection output light.It will be understood by those skilled in the art that microprism 400 any one lip-deep any point all can form by the mode of describing in detail above towards the normal of whole face or the reverberation 402 of its proximal direction.Like this, the light that reflects from each inclined plane of micro mirror unit has the effect of mutual enhancing, and can form along the reverberation of face normal direction, thereby makes fluoroscopic brightness be improved.
Experimental study shows, the under equal conditions positive luminosity of matrix phosphor screen that is made of as shown in Figure 4 microprism doubles above than existing first kind phosphor screen.
In addition, because the existence on inclined plane, the positive scattered beam that departs from that the light-emitting particles lack of alignment of fluorescent material causes is greatly reduced, thereby has also alleviated the problem of the directive property difference of light in the prior art, has improved the resolution and the contrast of image from another angle.
Though Fig. 3 of the present invention and Fig. 4 fall rectangular pyramid with 45 ° to illustrate the implementation of the preferred embodiments of the invention, but, those skilled in the art can understand, as long as micro mirror unit is formed and has the structure that caves inward, promptly can realize purpose of the present invention by optical principle described above.Therefore, the rectangular pyramid that XRF of the present invention screen may be implemented as by other angles constitutes, and perhaps, also may be implemented as by falling polygonal pyramid, inverted cone, concave spherical surface and concave paraboloid or its and makes up and constitute.In addition, each micro mirror unit can form has identical shaped, identical size, and perhaps, each micro mirror unit is can be mutually different, and for example some micro mirror unit are inverted cone for falling other micro mirror unit of polygonal pyramid, and this falls within the scope of the present invention equally.
Micromirror matrix formula phosphor screen provided by the invention is lower than under the fluoroscopic situation of second class at the direct projection luminosity, by coming reverberation in the distinctive recessed surface of micro-prism structure, therefore only just can improve fluoroscopic brightness with present known fluorescent material.In addition, because it is thin to several microns, the long transparent crystal buttress shaft of hundreds of microns that the present invention need not as the second class phosphor screen fluorescent material to be made, and only need to use the fluorescent material of powdery, therefore can select for use to cause second class phosphor screen fluorescent material that can't use, that energy conversion efficiency is higher because of not making the transparent rules crystal.Like this, the normal and the proximal direction luminosity thereof that just can be implemented in whole face are higher than the fluoroscopic purpose of second class.In other words, the fluoroscopic manufacturing process of microprism matrix form of the present invention is simpler and production efficiency is higher than the second class phosphor screen, and lower cost is arranged, and but can provide than the higher brightness of the second class phosphor screen.
Ability and technical staff are appreciated that, " being recessed into " as herein described or " caving inward " are relative notions, do not get rid of and adopt part and whole protruding micro mirror unit to constitute micro mirror array, thereby between adjacent protruding micro mirror unit, constitute " being recessed into " or " caving inward " surface texture that is equal to or partly is equal to, thereby stimulated emission light and reflection ray are strengthened mutually, improve fluoroscopic brightness.In addition, ability and technical staff are appreciated that phosphor screen as herein described can be the plane, also can be curved surfaces.
Although the present invention is described with reference to preferred embodiments, those skilled in the art will appreciate that, can carry out various variations under the situation of not leaving the scope of the invention, and can replace wherein element with equivalent.In addition, can carry out many modifications so that particular case or material are fit to instruction of the present invention, and not leave its essential scope.Therefore, the present invention should be regarded as not being confined to as the best mode of carrying out the present invention's expection and disclosed particular, but the present invention will comprise all embodiments that fall in the appending claims scope.Following examples show that how effective the present invention is, but should not be construed as limiting.
Claims (10)
1. an XRF is shielded, and comprising:
Have relative first and second ground floor, described ground floor comprises the fluorescent material that is evenly distributed in the described ground floor, and described first face comprises the micro mirror array that is made of a plurality of micro mirror unit that concave.
2. XRF as claimed in claim 1 screen, the every bit in the micro mirror unit on described first had both been launched also reflection ray of light when work.
3. XRF screen as claimed in claim 1 also comprises being attached to described second reflector, and the basic unit that is attached to described reflector.
4. XRF as claimed in claim 1 screen, described micro mirror unit are selected from by falling the group that polygonal pyramid, inverted cone, concave spherical surface and concave paraboloid and combination thereof form, and wherein the area of overlooking of each micro mirror unit should be less than the area of the pixel that will describe image.
5. XRF screen as claimed in claim 4, wherein said micro mirror unit are 45 ° of rectangular pyramids.
6. XRF as claimed in claim 5 screen, wherein said 45 ° of base length of falling rectangular pyramid are about 20 to about 200 microns.
7. XRF screen as claimed in claim 5, the thickness of wherein said ground floor is about 50 to about 500 microns.
8. XRF screen as claimed in claim 1, a plurality of micro mirror unit of described micro mirror array are proper alignment.
9. XRF screen as claimed in claim 1, described micro-mirror array surfaces is higher in phosphor screen stimulated luminescence wave-length coverage internal reflection rate.
10. one kind is improved the method that XRF is shielded brightness, comprising:
The ground floor of described XRF screen is provided, described ground floor has relative first and second, described ground floor comprises the fluorescent material that is evenly distributed in the described ground floor, and described first face comprises the micro mirror array that is made of a plurality of micro mirror unit that concave.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910000451A CN101777480A (en) | 2009-01-13 | 2009-01-13 | X-ray fluorescent screen with function of improving luminance and method thereof |
| PCT/CN2010/000044 WO2010081386A1 (en) | 2009-01-13 | 2010-01-12 | X-ray fluorescent screen with improved brightness and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910000451A CN101777480A (en) | 2009-01-13 | 2009-01-13 | X-ray fluorescent screen with function of improving luminance and method thereof |
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| CN101777480A true CN101777480A (en) | 2010-07-14 |
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| WO (1) | WO2010081386A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820803A (en) * | 2019-11-15 | 2021-05-18 | 深圳市聚飞光学材料有限公司 | Brightness enhancement film, manufacturing method thereof and light-emitting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB777745A (en) * | 1953-12-04 | 1957-06-26 | Antonius Wilhelmus Vingerhoets | Improvements in luminescent screens |
| GB1308672A (en) * | 1969-03-07 | 1973-02-21 | Fuji Photo Film Co Ltd | Radiographic intensifying screens |
| US5534702A (en) * | 1994-08-08 | 1996-07-09 | Hewlett-Packard Company | Resolution improvement of images recorded using storage phosphors |
| JPH10186098A (en) * | 1996-11-08 | 1998-07-14 | Konica Corp | Radiological image converting panel and its manufacture |
| US6921909B2 (en) * | 2002-08-27 | 2005-07-26 | Radiation Monitoring Devices, Inc. | Pixellated micro-columnar films scintillator |
| JP2005009872A (en) * | 2003-06-16 | 2005-01-13 | Canon Inc | Scintillation plate and manufacturing method thereof |
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2009
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820803A (en) * | 2019-11-15 | 2021-05-18 | 深圳市聚飞光学材料有限公司 | Brightness enhancement film, manufacturing method thereof and light-emitting device |
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Application publication date: 20100714 |