CN204495745U - A kind of flying spot forming apparatus - Google Patents
A kind of flying spot forming apparatus Download PDFInfo
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- CN204495745U CN204495745U CN201520096965.5U CN201520096965U CN204495745U CN 204495745 U CN204495745 U CN 204495745U CN 201520096965 U CN201520096965 U CN 201520096965U CN 204495745 U CN204495745 U CN 204495745U
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Abstract
The utility model discloses a kind of flying spot forming apparatus, comprise radiation source and shield, shield is hollow circular cylinder, shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, it is characterized in that, there are two pairs of helicla flutes, wherein, the maximum upper subtended angle of the corresponding radiation source beam of highs and lows difference of the first incident groove and maximum lower subtended angle, the highs and lows of the second incident groove also distinguishes the maximum upper subtended angle of corresponding radiation source beam and maximum lower subtended angle; At shield circumferentially, the first incident groove and the second incident groove account for the scope of 0-180 ° jointly; First outgoing groove and the second outgoing groove respectively groove incident with first and the second incident groove corresponding.Utilize the utility model can improve the sweep velocity of flying spot forming apparatus.
Description
Technical field
The utility model relates to radiography field, particularly a kind of flying spot forming apparatus.
Background technology
In Non-Destructive Testing and safety check products application, a kind of radiography utilizes X ray form of a stroke or a combination of strokes beam to carry out scanning imagery to checking matter, one-dimensional scanning image can be formed in the beam plane of scanning motion, when detected material and scanning device have relative movement, the direction of relative movement can realize two-dimensional scan, thus whole process can obtain a two-dimentional scan image.The x-ray photon that detected material scattering collected by radiation detector and the x-ray photon passed after detected material, through AD conversion and data acquisition, photon information is converted to the discernible digital quantity signal of computing machine, through image procossing, for user provides radiation scanning image clearly, this radiation scanning mode is commonly referred to flying-spot scanner.In the equipment adopting Flying-spot technology, crucial sport technique segment has 2 points, and one is the design of flying spot forming apparatus, and two is sizes of flying-spot scanner speed.
Figure 1 shows that a kind of using state figure of flying-spot scanner, be placed with slit collimator 3 between radiation source 1 and shield 5, shield 5 is hollow circular cylinder, horizontal positioned, and right side is the measured object 8 along arrow 11 direction movement.Shield 5 sidewall has a pair helix gap 6 ' and 6 ", radiation source 1 sends ray, is restricted to fan-ray beam 4, is irradiated on right cylinder 5 via the rectilinear slot 2 on slit collimator 3.When shield 5 rotates around its central axis (sense of rotation is shown in arrow 12), the ray of fan-ray beam 4 is incident by gap 6 ', again through gap 6 " outgoing (obviously, gap 6 ' and 6 " both position corresponding), formation form of a stroke or a combination of strokes beam 10.Shield 5 continues to rotate, then through gap 6 " flying spot of outgoing forms countless form of a stroke or a combination of strokes beam in the surface level of arrow 13, and measured object 8 moves along arrow 11 direction in sweep limit, completes flying-spot scanner.
It should be noted that, Fig. 1 explains the process of flying spot formation from principle, reflect flying spot formation basic theory, but in actual applications, helix gap on shield 56 ' and 6 " can not completely according to Fig. 1 design, this is because: the cone beam that the ray that radiographic source 1 sends is is the center of circle with the focus of radiation source; but not infinite ray; the fan-ray beam after collimation is with different subtended angles through shield 5, and ray is angled at shield 5 internal mutual, but not is parallel to each other.If gap 6 ' and 6 " be distributed in the short transverse of whole shield 5 as shown in Figure 1, some incident ray inevitable is blocked, cannot outgoing.
Fig. 2 shows the shield of the flying spot forming apparatus that a kind of reality uses, the side view that in figure, left side is vertically placed for shield, radiation source is positioned at (some P is source focal point) on the left of shield, in figure, right side is the sidewall stretch-out view of this shield, for having certain thickness rectangular slab after sidewall launches.A pair helicla flute (i.e. gap) ad and a ' d ' can be seen sidewall stretch-out view, wherein ad is incident groove, and a ' d ' is outgoing groove, in the short transverse of shield, ad is distributed in rectangular slab central region, and a ' d ' is distributed in the whole short transverse of rectangular slab.This distribution mode meets flying spot formation basic theory, inscribes time a certain, and the ray that radiation source sends can by some incidence on incident groove ad, and through shield hollow space, the corresponding point outgoing from outgoing groove a ' d ', forms a flying spot.
Flying spot scanning device sweep velocity based on current shield is not high, even if increase the rotational speed of shield, significantly can not improve sweep velocity, apparatus design haves much room for improvement.
Summary of the invention
In view of this, the utility model proposes a kind of row flying spot forming apparatus, to spiral fluted quantity on shield and position optimization design, shield rotates a circle and forms multiple row flying spot, significantly can improve sweep velocity.
The utility model provides a kind of flying spot forming apparatus, comprise radiation source and shield, shield is hollow circular cylinder, shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, there are two pairs of helicla flutes, wherein, the maximum upper subtended angle of the corresponding radiation source beam of highs and lows difference of the first incident groove and maximum lower subtended angle, the highs and lows of the second incident groove also distinguishes the maximum upper subtended angle of corresponding radiation source beam and maximum lower subtended angle; At shield circumferentially, the first incident groove and the second incident groove account for the scope of 0-180 ° jointly; First outgoing groove and the second outgoing groove respectively groove incident with first and the second incident groove corresponding.
The utility model also provides a kind of flying spot forming apparatus, comprise radiation source and shield, shield is hollow circular cylinder, shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, there are three pairs of helicla flutes, wherein, the maximum upper subtended angle of the corresponding radiation source beam of highs and lows difference of the first incident groove and maximum lower subtended angle; Second incident groove and the 3rd incident groove in the vertical direction are continuous, and discontinuous in the horizontal direction; The maximum upper subtended angle of the corresponding radiation source beam of peak of the second incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the 3rd incident groove; At shield circumferentially, first, second, and third incident groove accounts for the scope of 0-360 ° jointly; First, second, and third outgoing groove respectively groove incident with first, second, and third is corresponding.
The utility model also provides a kind of flying spot forming apparatus, comprise radiation source and shield, shield is hollow circular cylinder, shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, has four pairs of helicla flutes, wherein, first incident groove and the second incident groove in the vertical direction are continuous, and discontinuous in the horizontal direction; The maximum upper subtended angle of the corresponding radiation source beam of peak of the first incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the second incident groove; 3rd incident groove and the 4th incident groove in the vertical direction are continuous, and discontinuous in the horizontal direction; The maximum upper subtended angle of the corresponding radiation source beam of peak of the 3rd incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the 4th incident groove; At shield circumferentially, the incident groove of first, second, third and fourth accounts for the scope of 0-360 ° jointly; First, second, third and fourth outgoing groove respectively groove incident with first, second, third and fourth is corresponding.
Preferably, wherein the interphase of the first incident groove and the second incident groove is the first interphase, and the interphase of the 3rd incident groove and the 4th incident groove is the second interphase, and the first interphase and the second interphase overlap.
Preferably, wherein the interphase of the first incident groove and the second incident groove is the first interphase, and the interphase of the 3rd incident groove and the 4th incident groove is the second interphase, and the first interphase and the second interphase do not overlap.
The utility model also provides a kind of flying spot forming apparatus, comprise radiation source and shield, shield is hollow circular cylinder, shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, has five pairs of helicla flutes, wherein, first incident groove and the second incident groove in the vertical direction are continuous, and discontinuous in the horizontal direction; The maximum upper subtended angle of the corresponding radiation source beam of peak of the first incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the second incident groove; Three, the 4th and the 5th incident groove in the vertical direction is continuous between two, and discontinuous between two in the horizontal direction; The maximum upper subtended angle of the corresponding radiation source beam of peak of the 3rd incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the 5th incident groove; At shield circumferentially, the incident groove of first, second, third, fourth and fifth accounts for the scope of 0-360 ° jointly; First, second, third, fourth and fifth outgoing groove respectively groove incident with first, second, third, fourth and fifth is corresponding.
The utility model also provides a kind of flying spot forming apparatus, comprise radiation source and shield, shield is hollow circular cylinder, shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, has at least three pairs of helicla flutes, for generating at least two row flying spots, wherein, the M in described at least three pairs of helicla flutes incident groove and M outgoing groove are for generating a row flying spot, M >=2; Further, described M incident groove in the vertical direction is continuous between two, and discontinuous between two in the horizontal direction; The maximum upper subtended angle of the corresponding radiation source beam of peak of the 1st incident groove in described M incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of M incident groove in described M incident groove; At shield circumferentially, the scope that the individual incident groove of described M occupies jointly is less than 360 °; Described M outgoing groove is corresponding with described M incident groove respectively.
Preferably, wherein at shield circumferentially, the scope that the individual incident groove of described M occupies jointly is less than or equal to 180 °.
The beneficial effects of the utility model: the utility model embodiment is by the design to spiral fluted quantity and position on flying spot forming apparatus shield, provide a kind of flying spot forming apparatus to rotate a circle and form the solution of multiple row flying spot, can significantly improve flying-spot scanner speed, obtain more scan-datas, improve picture quality.The utility model embodiment adopts the helicla flute of step-by-step design, and shield tensile property is good, not yielding, can High Rotation Speed operation for a long time, and equipment safety performance is good.
Accompanying drawing explanation
Fig. 1 is the using state figure of a kind of flying-spot scanner in prior art.
Fig. 2 is the shield schematic diagram in prior art in a kind of flying spot forming apparatus.
Fig. 3 and Fig. 4 be the utility model embodiment there are two pairs of spiral fluted shield schematic diagram.
Fig. 5 be the utility model embodiment there are three pairs of spiral fluted shield schematic diagram.
Fig. 6 and Fig. 7 be the utility model embodiment there are four pairs of spiral fluted shield schematic diagram.
Fig. 8 be the utility model embodiment there are five pairs of spiral fluted shield schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the technical solution of the utility model is described in detail.
According to flying spot formation basic theory, for the incident groove on shield in flying spot forming apparatus and outgoing groove, both are mutually corresponding, both corresponding relations can be described as: the size of incident groove and outgoing groove and arrangement make in shield rotary course, at a time, source focal point, incidence point and corresponding eye point 3 is in alignment.For example, inscribe when left figure, t1 with reference in figure 2, source focal point P, incidence point a and corresponding eye point a ' 3 in alignment; After shield rotates 180 ° (arrive in t2 moment), source focal point P, incidence point d and corresponding eye point d ' 3 in alignment.Incident groove, outgoing groove are considered as being made up of numerous incidence point, eye point respectively, then within t1 to the t2 time interval, the some one_to_one corresponding on the point on incident groove ad and outgoing groove a ' d '.For the incidence point or the eye point that do not meet this corresponding relation, flying spot can not be formed.Therefore, once the relative position of radiation source and shield is determined, and the incident groove on shield is determined, outgoing groove can be determined thereupon.
Fig. 3 shows the shield schematic diagram of the flying spot forming apparatus of the utility model embodiment, and wherein left figure is the shield side view vertically placed, and right figure is the sidewall stretch-out view of this shield.The ray that radiation source sends forms fan-ray beam through collimating apparatus, and the subtended angle of fan-ray beam is Υ, and wherein maximum upper subtended angle is Υ 1, and maximum lower subtended angle is Υ 2.Hereafter for convenience of description, if shield is vertically place, shield bottom surface is at surface level, and shield rotary middle spindle vertically.
Fig. 3 embodiment shield comprises two pairs of helicla flutes, wherein,
I. in shield short transverse, incident groove a
1d
1and a
2d
2be distributed in central region (region that ray subtended angle covers); Correspondingly, outgoing groove a
1' d
1' and a
2' d
2' be distributed in whole short transverse;
Ii. at shield circumferentially, incident groove a
1d
1and a
2d
2jointly account for the scope of about 0-180 °; Correspondingly, outgoing groove a
1' d
1' and a
2' d
2' jointly account for the scope of about 180-360 °.
More specifically, at shield circumferentially, a
1d
1account for the scope of about 0-90 °, a
2d
2account for the scope of about 90-180 °.Correspondingly, a
1' d
1' account for the scope of about 180-270 °, a
2' d
2' account for the scope of about 270-360 °.
Fig. 3 embodiment is the basic embodiment of " rotate a circle formation two row flying spot ".Based on the flying spot forming apparatus of Fig. 3 embodiment shield, shield often rotates a circle formation two row flying spot, sweep velocity can be doubled.
Further, Fig. 4 shows a kind of modification based on Fig. 3 design, changes spiral fluted distribution mode.Expand incident groove distribution range, make it not be confined within the scope of 90 °, incident groove a in Fig. 4
1d
1drop within the scope of 0-180 °, incident groove a
2d
2drop within the scope of 180-360 °, outgoing groove adjusts accordingly, after adjustment as shown in Figure 4.Can see, different helicla flute has crossing situation (in Fig. 4 shown in two circles), and incident groove is crossing with the outgoing groove corresponding to another incident groove, and this does not meet the condition that any instant only forms a flying spot, does not meet flying spot formation basic theory.For this reason, need continue adjustment spiral fluted distribution mode, the thinking of adjustment is as follows:
First, incident groove a is chosen
2d
2upper any point as waypoint, by incident groove a
2d
2be divided into two sections of incident grooves, obtain a
2b
2, c
2d
2(with reference to figure 5);
Secondly, mobile aforementioned two sections of incident grooves, eliminate the intersecting area in Fig. 4;
Finally, do corresponding segmentation and movement to outgoing groove, the helicla flute distribution mode obtained can ensure that any instant only has a flying spot to be formed.
Shield for Fig. 5 embodiment meets the requirement of the formation two row flying spot that rotates a circle, and shortens to some extent due to every section of spiral fluted length, and the tensile strength of shield is increased.In like manner, can a
1d
1also choose and a bit disconnect and be adjusted accordingly, as Fig. 6, the tensile strength of shield can further improve.
In addition, be that the shield of Fig. 5 and Fig. 6 embodiment all has flying spot to be formed within the scope of 360 ° with another difference of Fig. 4 embodiment.
The shield describing the utility model embodiment based on Fig. 6 below rotates a circle the details aspect of formation two row flying spot.Four sections of incident groove a in Fig. 6
1b
1, c
1d
1, a
2b
2, c
2d
2, and four sections of outgoing groove a
1' b
1', c
1' d
1', a
2' b
2', c
2' d
2', there is following position relationship:
The incident groove a of √
1b
1and c
1d
1zonal cooling;
The incident groove a of √
2b
2and c
2d
2zonal cooling;
√ a
1and d
1the maximum upper subtended angle of the corresponding fan-ray beam of difference and maximum lower subtended angle;
√ a
2and d
2the maximum upper subtended angle of the corresponding fan-ray beam of difference and maximum lower subtended angle;
√ each outgoing groove is corresponding with each incident groove.
Herein, " zonal cooling " refers to that two sections of incident groove in the vertical directions continuously (such as: b
1and c
1be positioned at same level, b
2and c
2be positioned at same level), and in the horizontal direction discontinuous (such as: b
1and c
1separately, b
2and c
2separately).
During scanning operation, suppose that Fig. 6 embodiment shield turns clockwise, radiation source irradiates shield from the side, and ray is successively from a
1b
1and c
1d
1continuous incidence, then from a
1' b
1' and c
1' d
1' outgoing continuously, namely form first row flying spot; Shield continues to rotate, and ray is also successively from c
2d
2and a
2b
2continuous incidence, then from c
2' d
2' and a
2' b
2' outgoing continuously, namely form secondary series flying spot.
It is to be noted, helicla flute shown in Fig. 5 and Fig. 6 embodiment is not unique arrangement, should with reference to the size of shield (diameter, highly, wall thickness etc.), the position of radiation source, the subtended angle of fan-ray beam and actual user demand etc. in reality, under the condition meeting flying spot formation basic theory, the quantity of the incident groove of flexibly changing and outgoing groove, inclined degree and position, reach shield to rotate a circle the object of formation two row flying spot, improve the sweep velocity of flying spot forming apparatus.
The design of preferred embodiments more of the present utility model is below described.
Fig. 7 shows the shield helicla flute design of a kind of optimization of the utility model, has four pairs of helicla flutes, wherein incident groove a
1b
1and d
1c
1zonal cooling, a
2b
2and c
2d
2zonal cooling, end a
1, c
1, a
2and d
2corresponding maximum subtended angle respectively, each outgoing groove is corresponding with each incident groove.
Wherein, the difference of Fig. 6 and Fig. 7 embodiment is mainly:
c in Fig. 6
1d
1slope be negative, c in Fig. 7
1d
1slope be just;
b in Fig. 6
1, c
1, b
2and c
2be positioned at same plane, b in Fig. 7
2and c
2be positioned at W face, and b
1, d
1be positioned at W ' face.
Utilize Fig. 7 shield to implement scanning operation, rotate a circle and also can form two row flying spots.Be appreciated that by the arrangement mode of the incident groove of Fig. 7 shield, the slope size of the utility model to incident groove has no particular limits, in addition, the interphase (such as face W) of a pair incident groove also need not overlap with another interphase to incident groove (such as face W ').
Fig. 8 shows the shield helicla flute design that the utility model another kind is optimized, and be different from four pairs of helicla flutes of Fig. 6 and Fig. 7, Fig. 8 shield has five pairs of helicla flutes.Wherein, incident groove a
1b
1and d
1c
1zonal cooling, c
2e
2, f
2d
2and a
2b
2zonal cooling, end a
1, c
1, c
2and b
2corresponding maximum subtended angle respectively, each outgoing groove is corresponding with each incident groove.
During scanning operation, suppose that Fig. 8 embodiment shield is rotated counterclockwise, radiation source irradiates shield from the side, and ray is successively from d
2f
2, e
2c
2and b
2a
2, incident continuously, then from d
2' f
2', e
2' c
2' and b
2' a
2' outgoing continuously, form first row flying spot; Shield continues to rotate, and ray is also successively from d
1c
1and b
1a
1continuous incidence, then from d
1' c
1' and b
1' a
1' outgoing continuously, form secondary series flying spot.
Be appreciated that in the helicla flute that the utility model shield works, incident groove and outgoing groove should occur in pairs by the arrangement mode of the incident groove of Fig. 8 shield, and spiral fluted sum had no particular limits, such as, by a
1b
1continue segmentation also to adjust, can obtain having six to (or more) spiral fluted shield, shield resistance to tension can be improved to a certain extent, prevent equipment to be out of shape.
It is emphasized that spiral fluted quantity is not The more the better.For example, incident groove a in Fig. 8 is supposed
1b
1be α with the angle of surface level, outgoing groove a
1' b
1' be β with the angle of surface level.If by a
1b
1be divided into two sections and adjust to form the 6th incident groove, likely needing to increase α to change a
1b
1slope (correspondingly, β also increases), thus obtain enough regions for arranging the 6th incident groove.Be appreciated that the helicla flute that shield is arranged is more, α and β is more close to 90 °.In practical application, this will cause ray through a
1b
1and a
1' b
1' the flying spot in the vertical direction that formed is too long and narrow, then the projection of flying spot on detected material is longer, and the pixel of the scan image obtained is comparatively large, finally causes image resolution ratio low, affects quality of scanning.
Therefore, in order to ensure that image resolution ratio meets user demand, needing the size controlling flying spot, in shield design process, controlling spiral fluted slope, also namely controlling the angle of helicla flute and surface level.Particularly, the angle of helicla flute and surface level should be as far as possible little, preferably, makes the angle of incident groove and surface level (such as α) be not more than 45 °, make the angle of outgoing groove and surface level (such as β angle) be less than 90 °, the size of flying spot in the vertical direction can be controlled.
In addition, the size of flying spot can also be controlled by following means: collimating apparatus after arranging between shield and radiation detector, can control flying spot size in the horizontal direction.The gap of rear collimating apparatus should be as far as possible narrow, and preferably, after order, the gap width of collimating apparatus is not more than 10mm.
In actual applications, according to diameter, the parameter such as height and thickness of requirements set shield, the diameter of shield and highly larger, is more conducive to multipair spiral fluted position flexible arrangement.
For flying spot forming apparatus, the continuity of scan-data is directly relevant to the continuity of flying spot.As previously mentioned, embodiment of the present utility model has the designing requirement of " zonal cooling " to the incident groove of multistage for the formation of a row flying spot.For Fig. 6 embodiment, the b of incident groove
1and c
1be positioned at same level, b
2and c
2be positioned at same level, in the vertical direction is formed strict continuous.In this, when physical treatment, consider the precision of shield processing technology, will accurately make such as b
1and c
1highly identical being not easy realizes, and therefore, the utility model allows two incident groove in the vertical directions to have lap, i.e. b
1height can lower than c
1height, make a
1b
1and c
1d
1in the vertical direction overlaps, and at this moment still meets in the vertical direction continuous print condition.When post-processed scan-data, the redundant data of lap is removed, do not affect final imaging.
Above, be described in detail in conjunction with specific embodiments to the technical solution of the utility model, described specific embodiment understands thought of the present utility model for helping.The derivation that those skilled in the art make on the basis of the utility model specific embodiment and modification also belong within the utility model protection domain.
Claims (8)
1. a flying spot forming apparatus, comprises radiation source and shield, and shield is hollow circular cylinder, and shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, it is characterized in that having two pairs of helicla flutes, wherein,
The maximum upper subtended angle of the corresponding radiation source beam of highs and lows difference of the first incident groove and maximum lower subtended angle, the highs and lows of the second incident groove also distinguishes the maximum upper subtended angle of corresponding radiation source beam and maximum lower subtended angle;
At shield circumferentially, the first incident groove and the second incident groove account for the scope of 0-180 ° jointly;
First outgoing groove and the second outgoing groove respectively groove incident with first and the second incident groove corresponding.
2. a flying spot forming apparatus, comprises radiation source and shield, and shield is hollow circular cylinder, and shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, it is characterized in that having three pairs of helicla flutes, wherein,
The maximum upper subtended angle of the corresponding radiation source beam of highs and lows difference of the first incident groove and maximum lower subtended angle;
Second incident groove and the 3rd incident groove in the vertical direction are continuous, and discontinuous in the horizontal direction;
The maximum upper subtended angle of the corresponding radiation source beam of peak of the second incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the 3rd incident groove;
At shield circumferentially, first, second, and third incident groove accounts for the scope of 0-360 ° jointly;
First, second, and third outgoing groove respectively groove incident with first, second, and third is corresponding.
3. a flying spot forming apparatus, comprises radiation source and shield, and shield is hollow circular cylinder, and shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, it is characterized in that having four pairs of helicla flutes, wherein,
First incident groove and the second incident groove in the vertical direction are continuous, and discontinuous in the horizontal direction;
The maximum upper subtended angle of the corresponding radiation source beam of peak of the first incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the second incident groove;
3rd incident groove and the 4th incident groove in the vertical direction are continuous, and discontinuous in the horizontal direction;
The maximum upper subtended angle of the corresponding radiation source beam of peak of the 3rd incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the 4th incident groove;
At shield circumferentially, the incident groove of first, second, third and fourth accounts for the scope of 0-360 ° jointly;
First, second, third and fourth outgoing groove respectively groove incident with first, second, third and fourth is corresponding.
4. flying spot forming apparatus as claimed in claim 3, it is characterized in that, wherein the interphase of the first incident groove and the second incident groove is the first interphase, and the interphase of the 3rd incident groove and the 4th incident groove is the second interphase, and the first interphase and the second interphase overlap.
5. flying spot forming apparatus as claimed in claim 3, it is characterized in that, wherein the interphase of the first incident groove and the second incident groove is the first interphase, and the interphase of the 3rd incident groove and the 4th incident groove is the second interphase, and the first interphase and the second interphase do not overlap.
6. a flying spot forming apparatus, comprises radiation source and shield, and shield is hollow circular cylinder, and shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, it is characterized in that having five pairs of helicla flutes, wherein,
First incident groove and the second incident groove in the vertical direction are continuous, and discontinuous in the horizontal direction;
The maximum upper subtended angle of the corresponding radiation source beam of peak of the first incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the second incident groove;
Three, the 4th and the 5th incident groove in the vertical direction is continuous between two, and discontinuous between two in the horizontal direction;
The maximum upper subtended angle of the corresponding radiation source beam of peak of the 3rd incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of the 5th incident groove;
At shield circumferentially, the incident groove of first, second, third, fourth and fifth accounts for the scope of 0-360 ° jointly;
First, second, third, fourth and fifth outgoing groove respectively groove incident with first, second, third, fourth and fifth is corresponding.
7. a flying spot forming apparatus, comprise radiation source and shield, shield is hollow circular cylinder, shield sidewall has the helicla flute arranged in pairs, often pair of helicla flute comprises an incident groove and an outgoing groove, it is characterized in that, there are at least three pairs of helicla flutes, for generating at least two row flying spots, wherein
M in described at least three pairs of helicla flutes incident groove and M outgoing groove are for generating a row flying spot, M >=2; Further,
Described M incident groove in the vertical direction is continuous between two, and discontinuous between two in the horizontal direction;
The maximum upper subtended angle of the corresponding radiation source beam of peak of the 1st incident groove in described M incident groove, the maximum lower subtended angle of the corresponding radiation source beam of minimum point of M incident groove in described M incident groove;
At shield circumferentially, the scope that the individual incident groove of described M occupies jointly is less than 360 °;
Described M outgoing groove is corresponding with described M incident groove respectively.
8. flying spot forming apparatus as claimed in claim 7, is characterized in that, wherein, at shield circumferentially, the scope that the individual incident groove of described M occupies jointly is less than or equal to 180 °.
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|---|---|---|---|
| CN201520096965.5U CN204495745U (en) | 2015-02-11 | 2015-02-11 | A kind of flying spot forming apparatus |
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987920A (en) * | 2015-02-11 | 2016-10-05 | 北京君和信达科技有限公司 | Flying spot forming device and design method thereof |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987920A (en) * | 2015-02-11 | 2016-10-05 | 北京君和信达科技有限公司 | Flying spot forming device and design method thereof |
| CN105987920B (en) * | 2015-02-11 | 2019-10-08 | 北京君和信达科技有限公司 | A kind of flying spot forms device and design method |
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