CN1030035C - Light source probe - Google Patents
Light source probe Download PDFInfo
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- CN1030035C CN1030035C CN 93105108 CN93105108A CN1030035C CN 1030035 C CN1030035 C CN 1030035C CN 93105108 CN93105108 CN 93105108 CN 93105108 A CN93105108 A CN 93105108A CN 1030035 C CN1030035 C CN 1030035C
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- light
- light source
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Abstract
The present invention relates to a light source probe for a soft tissue disease diagnosis device. After the light outlet surface of a light conductor of the light source probe is roughened, the light outlet surface becomes an optical diffuse scattering surface. After near parallel light sent from a light source passes through the optical diffuse scattering surface, the near parallel light becomes large area uniform diffuse scattering light. A detected soft tissue can be completely and uniformly irradiated. The sharpness and the resolution of an obtained transmission image are enhanced.
Description
The present invention relates to soft tissue diseases's diagnostic equipment, particularly infrared ray mastopathy transmission diagnostic apparatus.Specifically relate to be used for the light source probe of infrared ray mastopathy transmission diagnostic apparatus.
The method that has been extensive use of the infrared transmission photograph in the modern medical service diagnostic techniques is diagnosed the abnormality in the mammary gland, this method adopts wide band or narrow band infrared light to shine mammary gland to be checked, the light that transmits from mammary gland with the imaging device collection in the opposite side of radiation source, send in the computer again and handle, form simulated image and on display, show.The great advantage of this method is harmless to human body, observes intuitively, and detection mode is easy.
Because human body is to the absorbance of the light of each wave band, reflectance is different with absorbance, and absorbance is lower on the whole, and in order to obtain diagnosing useful image, employed radiation source and imaging device all must be through custom-designed.Be mounted in the hand-holdable light source probe as employed transmitted light source in the disclosed infrared mammary gland diagnostic equipment in Chinese invention patent application CN-90101352 and U.S. Pat-4898172.The structure of these two kinds of light source probes is identical substantially, they mainly are by hand-holdable thermally insulating housing, be installed in the light source of launching wide band or narrow band infrared light at said shell middle part, be installed in the light conductor of said case head, this light conductor plays heat-blocking action simultaneously, and the fan that is used to dispel the heat, it is installed in the rear portion of probe usually.When the diagnostic equipment is worked, doctor's hand hold transducer is tight against certain part at breast to be detected with the light-emitting window of probe front end, the light that light source sends in the probe enters the mammary gland from the light-emitting window transmission through light conductor, part in the incident illumination is absorbed by tissue, another part then transmits from mammary gland, the imaging device that this a part of transillumination is set at the relative side of probe positions receives, and passes through the processing of image-processing system again, is presented on the display with the form of image.
Past that is to say that the intensity that requires transmitted light source is enough strong because the restriction of camera device sensitivity requires the transmission light intensity to acquire a certain degree, and this generally is by the brightness that increases light source and makes emergent light concentrate these two kinds of means to realize more.For this reason, the light output surface of light source probe light conductor is through strict polishing.The light of outgoing almost is directional light from probe, and it is suitable substantially with the bore of probe light-emitting window to that is to say that transmission enters the diameter of the light beam in the soma.And this diameter is very little, is about 2-3 centimetre.Da Xiao light beam can only illuminate a very little part in mammary gland like this, and because the outgoing light intensity mainly concentrates on the beam center zone, thereby be uneven to the irradiation of mammary gland tissue, this has influenced the definition and the resolution of gained image, has also reduced accurate rate of diagnosis simultaneously.
In fact, because the sensitivity of the CCD camera device in the latest modern technological technology is enough high, brightness requirement for radiation source is high no longer as before, and on the other hand, in order to improve accurate rate of diagnosis, the definition of transmission image and the requirement of resolution have but been improved, though by increasing to the improvement of imaging device with to the quality of the said image of improvement of computer image processing system, more effective improvement is to increase irradiated area of mammary gland and irradiation uniformity of light.
Purpose of the present invention will provide a kind of like this light source probe that can launch the even light of large tracts of land just.
The object of the present invention is achieved like this:
The light conductor light output surface of probe front end is carried out the roughening processing, a kind of mode wherein is its surface to be worn into the shape of similar clouded glass, countless small diffuse scattering surfaces so just on the light output surface of light source probe, have been formed, make the emergent light of light source probe become diffusion light, thereby increased the outgoing solid angle and the outgoing uniformity of light of light greatly by the original diffuse scattering that is similar to directional light process roughening treatment surface.Make light source can shine more large-area mammary gland tissue equably with same light-source brightness.The present invention can also carve mill with the light conductor surface of probe front end, makes said surface become interlaced by the parallel burr of at least two group regular distribution and reticulate pattern shape that form.Thereby the light from the light conductor outgoing is produced intensive scattering process, increased the distribution three-dimensional viewpoin and the uniformity of emergent light.
Will be in conjunction with the accompanying drawings with the lower part, explain the features and advantages of the present invention by detailed description to embodiment.
Fig. 1 is the light source probe structural representation in one embodiment of the present of invention;
Fig. 2 is near the structural representation of the light conductor light-emitting window in the light source probe in the prior art;
Fig. 3 is a near the structural representation interior light conductor light-emitting window of the light source probe in the one embodiment of the invention;
Fig. 4 is a near the structural representation interior light conductor light-emitting window of the light source probe in the another embodiment of the present invention;
Fig. 5 is that the experiment that the illumination solid angle to prior art and light source probe of the present invention compares test is provided with figure;
Fig. 6 is the design sketch of the light source probe of prior art to the detection breast irradiation;
Fig. 7 is that light source probe of the present invention is to detecting the design sketch of breast irradiation;
Fig. 8 is provided with figure to the experiment that prior art and light source probe emergent light light intensity spatial distribution of the present invention and equal pitch contour compare test;
Fig. 9 is the light source probe emergent light light intensity spatial distribution map of prior art;
Figure 10 is the light source probe emergent light light intensity spatial distribution contour map of prior art;
Figure 11 is the light source probe emergent light light intensity spatial distribution map of prior art;
Figure 12 is the light source probe emergent light light intensity spatial distribution contour map of prior art;
Figure 13 is a light source probe emergent light light intensity spatial distribution map of the present invention;
Figure 14 is a light source probe emergent light light intensity spatial distribution contour map of the present invention;
Figure 15 is a light source probe emergent light light intensity spatial distribution map of the present invention;
Figure 16 is a light source probe emergent light light intensity spatial distribution contour map of the present invention;
As shown in Figure 1, light source probe 1 of the present invention mainly is made of shell 2, light conductor 3, light source 4, reflector 5, light source control device 6, fan 7 and cable more than 8 parts.The shape of light source probe 1 and size are to design according to being fit to hand-held standard.Probing shell 2 is made by lighttight heat-barrier material.Light conductor 3 is a kind of organic material with excellent heat insulation property, particularly light transmission, its side 11 is coated with the light-proof material layer, preferably, the light that coating one deck total reflection film, light source 4 send is launched forward with the form of approximate directional light under the effect of reflector, preferably, reflector is to be made by the material that can absorb the light of visible light wave range in a large number, and the optical band of so actual outgoing is to concentrate in the useful 700-900nm scope of transmission photograph.The light that light source sends enters in the light conductor through the light conductor rear surface 12 of printing opacity, penetrate from the front surface of light conductor, the front surface 9 of light conductor and rear surface 12 provide one from the logical light path of probe inner light source outside probe, comparatively convenient for the use that makes probe, the front surface 9 of light conductor and rear surface 12 have a certain degree with the direction of the light beam that light source 4 sends.The effect of light source control device 6 is the brightness of the light that sends of regulation and control light source, it is connected with supervisory keyboard 20 on being installed in probing shell 2 by line 16, main control button comprises manual adjusting switching key 17, and this key is used for the manual adjustments light-source brightness and regulates the light-source brightness function conversion automatically; Brightness increases button 18, and brightness reduces button 19, and the brightness of the enough step-less adjustment light sources of these two bond energys reaches the purpose that makes clear image by regulating light-source brightness.Because used light source 4 can give out a large amount of heats at short notice, for user and the detected person of not burning, exhaust fan 7 has been installed at probe 1 rear portion, its effect is that the heat that light source 4 produces is extracted out, 1 rear portion dissipates from popping one's head in.As we can see from the figure, in probe 1 forward shell 2, also has one deck inner shell 14, form a hollow layer between inner shell 14 and the shell 2, in the zone of shell 2, have many through holes 15 near the probe middle part, in the forward zone of inner shell 14 approaching probes, also have many through holes 13 simultaneously, after fan 7 starts, produce suction force from front to back, under the effect of this suction, the outer air of probe enters hollow layer between shell 2 and the inner shell 14 from through hole 15, it is anterior to enter probe from through hole 13 again, the heat heating that is produced by light source here, at last, the air of heating is discharged from the through hole 21 of probe afterbody by fan 7, thereby is reached for the purpose of probe heat radiation.
In addition, as can be seen from the figure, on the intravital suitable position of the forward leaded light of probe, also be provided with the pick off 10 of detection probe emitting brightness and probe temperature, they are one of detecting elements that are used for iconic memory playback system and visual balance control system, and its concrete feature will propose in another application for a patent for invention of the applicant.
What Fig. 2 represented is near the structure anterior light conductor 203 light-emitting windows of light source probe in the prior art, the front was mentioned, in order not lose light-source brightness, the front and rear surfaces of light conductor 203 all is strict polishing, particularly the front surface 209 of light conductor has increased the light transmission of light conductor after polishing.But the illumination solid angle of emergent light is very little, and light intensity is also very concentrated, about this point, will be in the content of back 5-12 in conjunction with the accompanying drawings, and detail analysis is carried out in the edition with parallel text invention.
Figure 3 shows that near the structure light conductor 303 light-emitting windows in the light source probe in one embodiment of the present of invention, the inventor utilizes the scrubbing cream of suitable types to ponder the light output surface 309 of light conductor 303, makes it become the shape of similar clouded glass.Like this, just be equivalent on surface 309, form countless small diffuse scattering surfaces, thereby make the nearly directional light that from light source 4, sends in the effect of the light-emitting window of popping one's head in, become diffusion light, increased the illumination solid angle of emergent light and the distributing homogeneity of light intensity through diffuse scattering surface 309.About this point, also will be in the content of back 5-12 in conjunction with the accompanying drawings, and the contrast prior art is carried out detail analysis.
Figure 4 shows that near the structure light conductor 403 light-emitting windows in the light source probe in the another embodiment of the present invention, in this embodiment, the light-emitting window surface 409 of light conductor 403 is carved wears into by the interlaced reticulate pattern shape that constitutes of the parallel burr of two group rules at least, drawn among Fig. 4 is one group side generalized section in these burrs, can imagine and draw, it seems from probe light-emitting window top, this exiting surface is arranged in together regularly by various small embossments and constitutes, if suppose that this exiting surface 409 is interlaced and constitute by two groups of parallel burrs, just have seven little surfaces at least in the shared zone of each small embossment so, because each normal to a surface direction difference, emergent light was passing through surperficial 409 o'clock, intensive diffuse scattering can take place, thereby has increased the illumination solid angle of emergent light and the uniformity of light distribution.
Carve mill if carefully adjust and select the direction of the side surface of every burr and burr bottom and top surface normal, and strict polishing is all carried out on each the little surface that grinds quarter, resulting light output surface just not only has good diffuse scattering performance, also has the good light transmittance energy, the meticulous simultaneously result who selects, in the numerous small surface on the whole exiting surface 409, quantity towards the surface of each different directions is close basically, and the light of the exiting surface emission that obtains so just becomes the even light of extremely gratifying large tracts of land.The embodiments of the invention of being explained in conjunction with the accompanying drawings in the content of back are exactly the 3rd embodiment that obtains according to this method.
For the outstanding advantage that illustrates that convincingly compared with the prior art the present invention is had, the inventor provides following contrast experiment and result thereof.
At first,, scenery is placed between the light source probe and gamma camera that light conductor is housed, regulate the intensity of light source and picked-up image according to experiment setting shown in Figure 5.The contrast experiment shows, the illumination solid angle of the light source probe that the light conductor that front and rear surfaces all polishes is housed in the prior art is corresponding with the clear aperture of light conductor.Its illuminating effect as shown in Figure 6, when with light source probe P irradiation breast B, its field of illumination has only two parts between the chain-dotted line, it is fully aware of having only very little zone in the transmission image that gamma camera C is absorbed like this, if there is pathological changes in the root at breast, speckle shape thing as shown in FIG. will can't display because the field of illumination of light source probe is big inadequately, thus the phenomenon of failing to pinpoint a disease in diagnosis.Influenced accurate rate of diagnosis.
On the contrary, the illumination solid angle of the light source probe of the 3rd embodiment of the present invention is then much bigger than the upright angle of the illumination of the light source probe in the prior art.Its illuminating effect as shown in Figure 7, when with light source probe P ' irradiation breast B ' time to be detected, its field of illumination almost expands to whole breast, and because large-area like this uniformity of light is also very good, so the image that gamma camera C ' is absorbed can show the situation of whole breast tissue well, even the root at breast has abnormality, also can be identified exactly, so seldom fail to pinpoint a disease in diagnosis, the situation of mistaken diagnosis.This great advantage of the present invention just.
The represented result of Fig. 9-16 can more effectively illustrate this point.These results obtain by contrast experiment shown in Figure 8.
According to experiment setting shown in Figure 8, the light source probe that light conductor is housed is placed before the gamma camera, light-source brightness is adjusted to the non-full state that closes of gamma camera, and at position A(gamma camera over against light source) and position B(gamma camera over against the exiting surface of light conductor) videotape, the spatial distribution of the light intensity that obtains behind date processing and equal pitch contour are respectively shown in Fig. 9-16.
Fig. 9 and Figure 10 are respectively the light intensity spatial distribution and the contour maps of the light conductor that front and rear surfaces is all polished in the prior art that A place in position obtains in Fig. 8.Figure 11 and Figure 12 are respectively the light intensity spatial distribution and the contour maps of the light conductor that front and rear surfaces is all polished in the prior art that B place in position obtains.From Fig. 9-12 as can be seen, the light conductor in the prior art does not change the luminous energy spatial distribution of the light that light source sends substantially, and the illumination solid angle of emergent light is very little.
Figure 13 and Figure 14 are respectively the light intensity spatial distribution and the contour maps of the light conductor that front surface process roughening is handled among the 3rd embodiment of the present invention that position A goes out to obtain in Fig. 8.Figure 15 and Figure 16 are respectively the light intensity spatial distribution and the contour maps of the light conductor that front surface process roughening is handled in the 3rd embodiment of the present invention that B place in position obtains.From Figure 13-16 as can be seen, because improvement of the present invention, the light output surface of light source probe is become disperse beam, thereby changed the spatial distribution of the luminous energy of the light that light source sends significantly, make the solid angle of emergent light increase, uniformity increases.
Be understood that for any those of ordinary skill in field of the present invention the present invention is not limited only to the embodiment of above-mentioned accurate description, under the prerequisite that does not break away from design of the present invention and scope, can also make many improvement.And range of application of the present invention also is not restricted to infrared mammary gland medical diagnosis on disease device, and they can also be used to adopt the light of other wave band to make the checkout gear of any diagnosis soft tissue diseases of irradiates light.
Claims (3)
1, a kind of light source probe that is used for soft tissue diseases's diagnostic equipment, it comprises: probing shell, be installed in the forward light conductor of said probe, be installed in the light source at said probe middle part and be installed in the exhaust fan at probe rear portion, it is characterized in that: the exiting surface of said light conductor is handled and is become diffuse scattering surface through roughening.
2, as the said light source probe of claim 1, it is characterized in that: said diffuse scattering surface is the shape of similar ground glass surface.
3, as the said light source probe of claim 1, it is characterized in that: said diffuse scattering surface is by the interlaced reticulate pattern shape that constitutes of the parallel burr of two group rules at least.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93105108 CN1030035C (en) | 1993-05-04 | 1993-05-04 | Light source probe |
| AU51738/93A AU5173893A (en) | 1993-05-04 | 1993-10-19 | Method and apparatus for examining tissue by transillumination using near infrared light |
| PCT/CA1993/000441 WO1994024927A1 (en) | 1993-05-04 | 1993-10-19 | Method and apparatus for examining tissue by transillumination using near infrared light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93105108 CN1030035C (en) | 1993-05-04 | 1993-05-04 | Light source probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1076100A CN1076100A (en) | 1993-09-15 |
| CN1030035C true CN1030035C (en) | 1995-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93105108 Expired - Fee Related CN1030035C (en) | 1993-05-04 | 1993-05-04 | Light source probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030035C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129775B (en) * | 2020-09-23 | 2023-03-24 | 哈尔滨工业大学 | Dodging bar-shaped light source and optical element damage detection device based on same |
-
1993
- 1993-05-04 CN CN 93105108 patent/CN1030035C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1076100A (en) | 1993-09-15 |
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