CN201469288U - Single-port X-ray machine optical image system - Google Patents
Single-port X-ray machine optical image system Download PDFInfo
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- CN201469288U CN201469288U CN2009202350860U CN200920235086U CN201469288U CN 201469288 U CN201469288 U CN 201469288U CN 2009202350860 U CN2009202350860 U CN 2009202350860U CN 200920235086 U CN200920235086 U CN 200920235086U CN 201469288 U CN201469288 U CN 201469288U
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Abstract
A single-port X-ray machine optical image system comprises a booster (8) and an image shooting device (10) located on one side of the booster (8). The single-port X-ray machine optical image system is characterized in that the image shooting device (10) mainly consists of a neutral filter group (1), a lens group (3), iris diaphragms (4) and a CCD sensor (9), wherein the neutral filter group (1) is opposite to a ray outlet end of the booster (8), a photodiode (2) used for sensing X-ray strength of the booster (8) is arranged on a mounting base of the neutral filter group (1), the lens group (3) is arranged at the rear of the neutral filter group (1), the CCD sensor (9) is arranged at the rear of the lens group (3), an output of the CCD sensor (9) is connected with an imaging device, and the iris diaphragms (4) are located among lenses of the lens group (3) and connected with a driving device (11). The single-port X-ray machine optical image system has the advantages of small volume, simple structure, low cost, convenient use and high accuracy.
Description
Technical field
This utility model relates to a kind of Medical Instruments optical system, especially a kind of image acquisition optical system of X linear light radiography unit, specifically a kind of single-port x-ray machine image optical system.
Background technology
Image optical system is to use the imaging and the pretreatment unit of the X radiodiagnosis x instrument of image amplifier.Image acquisition has two kinds of methods: 1, the perspective of low dosage, and the fluorescence of image amplifier cutout screen shines directly into the ccd sensor camera lens, and then is absorbed by CCD; 2, the Exposure mode of high dose, the output fluorescence of image amplifier surpasses tens times of perspectives, before CCD, the attenuation process of luminous flux must be arranged, otherwise CCD is with saturated.
At present, for the image acquisition of the mode of exposing, the image optical system that uses in the international mainstream type has 4 kinds of patterns: 1, only use electric variable light hurdle to regulate luminous flux; 2, use a plurality of neutral colour filters (luminous flux is 30%) to cooperate motor or rotary solenoid to regulate luminous flux; 3, in the tandem lens system, use electronic aperture; 4, in the tandem lens system, use neutral colour filter (luminous flux is 30%) to cooperate electronic aperture.Electronic aperture in these patterns uses step motor control, needs to proofread and correct, and optical filter also needs motor or rotary solenoid control.If use the combination of optical filter and aperture, control structure complexity then, cost height.In the tandem lens system, controlled aperture is in the directional light light path of two camera lenses.But tandem lens system volume is too big, does not meet the trend of instrument miniaturization, universalness.Along with the reduction of electronic device cost, popularizing of integrated circuit uses electronic smooth hurdle to regulate the inexorable trend that luminous flux becomes this application.
Summary of the invention
The purpose of this utility model is the image optical system complex structure that uses in the existing x-ray machine image capture process, problems such as operation easier is big design a kind of simple in structure and can adjust the single-port x-ray machine image optical system of luminous flux automatically
The technical solution of the utility model is:
A kind of single-port x-ray machine image optical system, it comprises image intensifier 8 and is positioned at the picture capturing apparatus 10 of image intensifier 8 one sides, it is characterized in that described picture capturing apparatus 10 is mainly by neutral colour filter group 1, battery of lens 3, iris 4 and ccd sensor 9 are formed, wherein the ray port of export of neutral colour filter group 1 and image intensifier 8 over against, the photodiode 2 of the x-ray intensity that is used to respond to image intensifier 8 is installed on the mount pad of neutral colour filter group 1, battery of lens 3 is installed in the rear portion of neutral colour filter group 1, ccd sensor 9 is installed in the rear portion of battery of lens 3, the output of ccd sensor 9 links to each other with imaging device, and iris 4 links to each other between the lens of battery of lens 3 and with driving device 11.
Described driving device 11 is made up of train of reduction gears 7, motor 5 and potentiometer 6, potentiometer 6 is installed on the output shaft of motor 5 and rotation synchronous with it, driving gear also is installed on the output shaft of motor 5 simultaneously, this driving gear is meshed with the input gear of train of reduction gears 7, and the output shaft of reduction gearing 7 links to each other with iris 4.
The beneficial effects of the utility model are:
This utility model is by the rational deployment camera lens, integrate neutral colour filter and photodiode, use compact step motor drive and feedback device, it is little that it has a volume, cost is low, easy to operate, the automaticity advantages of higher, this utility model can also obtain the image of high s/n ratio with high stability simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-neutral colour filter group; The 2-photodiode; The 3-battery of lens; 4-light hurdle; The 5-motor; The 6-potentiometer; The 7-train of reduction gears; The 8-image intensifier; The 9-CCD pick off.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is further described.
As shown in Figure 1.
A kind of single-port x-ray machine image optical system, it comprises image intensifier 8 and is positioned at the picture capturing apparatus 10 of image intensifier 8 one sides, described picture capturing apparatus 10 is mainly by neutral colour filter group 1, battery of lens 3, iris 4, the driving device 11 and the ccd sensor 9 that drive iris 4 are formed, they form an assembly that is similar to camera gun, wherein the ray port of export of neutral colour filter group 1 and image intensifier 8 over against, the photodiode 2 of the x-ray intensity that is used to respond to image intensifier 8 is installed on the mount pad of neutral colour filter group 1, battery of lens 3 is installed in the rear portion of neutral colour filter group 1, ccd sensor 9 is installed in the rear portion of battery of lens 3, the output of ccd sensor 9 links to each other with imaging device, and iris 4 links to each other between the lens of battery of lens 3 and with driving device 11.Described driving device 11 can be realized by buncher during concrete enforcement, also can adopt structure shown in Figure 1, it mainly is made up of train of reduction gears 7, motor 5 and potentiometer 6, potentiometer 6 is installed on the output shaft of motor 5 and rotation synchronous with it, driving gear also is installed on the output shaft of motor 5 simultaneously, this driving gear is meshed with the input gear of train of reduction gears 7, and the output shaft of reduction gearing 7 links to each other with iris 4.
The light intensity decreasing that neutral colour filter group 1 can be sent image intensifier 8 is to 30% of incident illumination light intensity, photodiode 2 is installed on the base of neutral colour filter group 1, over against image amplifier 8 centres, monitoring image intensifier 8 change of luminous intensity, when the image intensifier luminous intensity variations, photodiode 2 just can send signal and offer control circuit, with the luminous flux of adjustment linear iris 4, and then the light exposure of control whole system.Potentiometer 6, train of reduction gears 7 are serially connected in respectively on the axle of motor 5, and the cross direction of motor 5 and train of reduction gears 7 is placed into cross direction parallel position with camera lens integral body, can effectively reduce the volume of camera lens like this.Motor 5 is a direct current generator that rated voltage is 5V, use the pulse voltage of 15V to drive, the pulse power cycle is set in the lower scope, pulse width (pulse width is being controlled the energy of each pulse) uses high frequency modulation to enter the current peak of motor 5 with control, under the control of pulse voltage, the driving lever angle that motor 5 is controlled linear iris 4 by train of reduction gears 7 is finished the light hurdle and is adjusted fast, accurately; The real-time monitoring of iris 4 positions is finished by the potentiometer 6 that is installed on 5 of the motors, when iris 4 change in location, potentiometer 6 can compare the actual adjustment position of iris 4 and the difference of desired location automatically, and provide the input voltage of feedback signal control step motor 5, and then the luminous flux by train of reduction gears 7 linear adjustment iris 4, the light exposure of whole system is in the ccd sensor 9 acceptable scopes.
This utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (2)
1. single-port x-ray machine image optical system, it comprises image intensifier (8) and is positioned at the picture capturing apparatus (10) of image intensifier (8) one sides, it is characterized in that described picture capturing apparatus (10) is mainly by neutral colour filter group (1), battery of lens (3), iris (4) and ccd sensor (9) are formed, wherein the ray port of export of neutral colour filter group (1) and image intensifier (8) over against, the photodiode (2) of the x-ray intensity that is used to respond to image intensifier (8) is installed on the mount pad of neutral colour filter group (1), battery of lens (3) is installed in the rear portion of neutral colour filter group (1), ccd sensor (9) is installed in the rear portion of battery of lens (3), the output of ccd sensor (9) links to each other with imaging device, and iris (4) is positioned between the lens of battery of lens (3) and with driving device (11) and links to each other.
2. single-port x-ray machine image optical system according to claim 1, the described driving device of its feature (11) is made up of train of reduction gears (7), motor (5) and potentiometer (6), potentiometer (6) is installed on the output shaft of motor (5) and rotation synchronous with it, driving gear also is installed on the output shaft of motor (5) simultaneously, this driving gear is meshed with the input gear of train of reduction gears (7), and the output shaft of reduction gearing (7) links to each other with iris (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202350860U CN201469288U (en) | 2009-08-19 | 2009-08-19 | Single-port X-ray machine optical image system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202350860U CN201469288U (en) | 2009-08-19 | 2009-08-19 | Single-port X-ray machine optical image system |
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| Publication Number | Publication Date |
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| CN201469288U true CN201469288U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202350860U Expired - Lifetime CN201469288U (en) | 2009-08-19 | 2009-08-19 | Single-port X-ray machine optical image system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103430629A (en) * | 2010-10-02 | 2013-12-04 | 瓦里安医疗***公司 | X-ray system and method |
| CN103462627A (en) * | 2013-09-22 | 2013-12-25 | 江苏美伦影像***有限公司 | High-sensitivity imaging chain system |
| CN104434152A (en) * | 2013-09-23 | 2015-03-25 | 全视科技有限公司 | X-ray and optical image sensor, imaging system and manufacturing method thereof |
-
2009
- 2009-08-19 CN CN2009202350860U patent/CN201469288U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103430629A (en) * | 2010-10-02 | 2013-12-04 | 瓦里安医疗***公司 | X-ray system and method |
| CN103430629B (en) * | 2010-10-02 | 2016-08-31 | 瓦里安医疗***公司 | x-ray system and method |
| CN103462627A (en) * | 2013-09-22 | 2013-12-25 | 江苏美伦影像***有限公司 | High-sensitivity imaging chain system |
| CN104434152A (en) * | 2013-09-23 | 2015-03-25 | 全视科技有限公司 | X-ray and optical image sensor, imaging system and manufacturing method thereof |
| US9520439B2 (en) | 2013-09-23 | 2016-12-13 | Omnivision Technologies, Inc. | X-ray and optical image sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
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| CX01 | Expiry of patent term |