CN106124459A - The dental plaque quantitative testing device of fluorescence spectrum energy ratio - Google Patents
The dental plaque quantitative testing device of fluorescence spectrum energy ratio Download PDFInfo
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- CN106124459A CN106124459A CN201610374159.9A CN201610374159A CN106124459A CN 106124459 A CN106124459 A CN 106124459A CN 201610374159 A CN201610374159 A CN 201610374159A CN 106124459 A CN106124459 A CN 106124459A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0071—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by measuring fluorescence emission
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0075—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
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Abstract
The invention discloses the dental plaque quantitative testing device of fluorescence spectrum energy ratio, including light source etc., after the light line focus collimating components that light source sends, and be irradiated on tooth samples through phosphor collection parts after dichroic mirror reflection turns to, the fluorescence that tooth samples is inspired is after phosphor collection parts, through dichroic mirror, incide on dispersion element, first energy harvester and the second energy harvester are set after dispersion element, the fluorescent energy that first energy harvester is collected is received by the first photodetector, the fluorescent energy that second energy harvester is collected is received by the second photodetector；First photodetector is data access micro-control unit after the first analog-digital converter, and the second photodetector is followed by into micro-control unit through the second analog-digital converter, and micro-control unit is connected with display.The dental plaque detection by quantitative of fluorescence spectrum energy ratio of the present invention, can be with objective and accurate quantitative response sensing point dental plaque content.
Description
Technical field
The invention belongs to oral health monitoring technical field, relate to dental plaque detection device, specifically one and be used for detecting
Oral plaque content and the device of distribution.
Background technology
Dental plaque is a kind of to be attached on dental surface, bacillary thin film based on stickiness substrate.Thin in dental plaque
Toxin produced by bacterium and other harmful substances directly stimulate gingiva (being commonly called as dental bed), make root of the tooth inflammation.In dental plaque new old generation, is new,
Decompose sugar and produce acidifying substance, destroy the dynamic equilibrium in dental hard tissue's demineralization ore deposit again, cause demineralization cariogenic.Dental plaque is dental caries
Sick and that periodontal disease is common main pathogenic.Dental plaque is detected oral cavity disease prevention significant.Due to
People's naked eyes cannot directly observe dental plaque, and current clinic typically uses plaque disclosing agent, developer type to have liquor and tablet two
Kind.When using liquor, can see being moistened with the cotton balls liquid spreading of display liquid in the cheek lingual surface of dental pattern and adjacent gap location after gargling
Examine；Bacterial plaque also can being shown, drop, in the tip of the tongue, licks each facing with the tip of the tongue, observes after gargling.When using tablet, tablet is chewed,
With the tip of the tongue, fragment is licked each facing, observe after gargling.The dyeing of attachment area without bacterial plaque is washed off, and has the region that bacterial plaque is adhered to
Then present certain dyeing.The method uses the mode that outside agent is smeared, and developer remains in oral cavity not easy cleaning, according to naked eyes
Observe and judge that the mode of plaque distribution has subjectivity, it is impossible to realize quantitative NDT.
Dental plaque will produce autofluorescence under ultraviolet excitation, be different from healthy tissue of tooth and have different fluorescence spies
Levy spectral band, utilize this wave band fluorescent energy can dental plaque content and distribution be detected.
The technology utilizing fluorescent technique detection dental plaque is disclosed, such as:
Chinese patent literature ZL201110419562.6 discloses one and " utilizes the dental plaque detection dress of face battle array imaging
Put ", use 405nm light source activation dental surface, extract 600-800nm by the method placing optical filter before planar array detector
Fluorescence, show that dental plaque is distributed in the form of images.
Chinese patent literature CN1309545 discloses one " for the toothbrush with fluorescent apparatus of dental plaque detection ",
Scanning at dental surface, excitation source wavelength is at 470 ± 40nm, and detection wavelength is at about 540-550nm and 610-620nm.In the future
The fluorescence intensity of Autonomous test tooth surface compares with the fluorescence intensity from clean tooth surface, judges dental plaque in this approach
Content, it is achieved the detection of dental plaque.
Summary of the invention
The invention provides a kind of dental plaque content quantitative utilizing Autofluorescence energy ratio under ultraviolet excitation
The cannot-harm-detection device of detection, the dental plaque quantitative testing device of its entitled fluorescence spectrum energy ratio, it can be to tooth bacterium
The content of speckle carries out direct detection, and provides testing result with the form of numerical value, has the feature such as noncontact, quantification.
The present invention is by the following technical solutions:
The dental plaque quantitative testing device of fluorescence spectrum energy ratio, including light source (1), focussed collimated parts (2), two to
Color mirror (3), phosphor collection parts (5), dispersion element (6), energy harvester (7), energy harvester (10), photodetector
(8), photodetector (11), analog-digital converter (9), analog-digital converter (12), micro-control unit (13), display (14), light
After light line focus collimating components (2) that source (1) sends, and through phosphor collection parts after dichroic mirror (3) reflection turns to
(5), it is irradiated on tooth samples (4).Focussed collimated parts (2), dichroic mirror are installed on the transmission direction of light source (1) successively
(3), phosphor collection parts (5).The fluorescence that tooth samples (4) is inspired is after phosphor collection parts (5), through dichroic
Mirror (3), incides on dispersion element (6), places energy harvester (7) and energy harvester (10) below at dispersion element (6),
The fluorescent energy that energy harvester (7) is collected by photodetector (8) receive, the fluorescent energy that energy harvester (10) is collected by
Photodetector (11) receives.At a certain distance from energy harvester (7) and energy harvester (10) are after dispersion element (6),
It is perpendicular to optical axis direction place respectively.Photodetector (8) test surface central point overlaps with the centrage of energy harvester (7),
Photodetector (11) test surface central point overlaps with the centrage of energy harvester (10).Photodetector (8) is through modulus
Transducer (9) data access micro-control unit (13) afterwards, photodetector (11) is followed by into micro-control through analog-digital converter (12)
Unit processed (13), micro-control unit (13) is connected with display (14).
Preferably, light source (1) is the light source such as semiconductor laser or LED.
Preferably, narrow in the range of the wave-length coverage of light source (1) sent light is 400-410nm, or 400-410nm
Band.
Preferably, by dichroic mirror (3), exciting light is reflected, and to Fluoroscopic.
Preferably, light beam is carried out shaping by focussed collimated parts (2), is adjusted to elongate light beam, the light being irradiated on tooth
Speckle size is about 0.2mm.
Preferably, dichroic mirror (3) installation direction and phosphor collection parts (5) optical axis direction angle 45 degree.
Preferably, dichroic mirror (3) is less than the luminous reflectance of 420nm to wavelength, for the light transmission more than 420nm.
Preferably, utilize dispersion element (6) fluorescence spectrum spatially to be separated, dispersion element (6) be grating or
Prism, or other have the components and parts of dispersion function.
Preferably, energy harvester (7) and energy harvester (10) point are placed in dispersion element (6) various location below
Shou Ji certain ripple between certain wave band and 600-700nm between 420nm-600nm and 600-700nm or between 420nm-600nm
The fluorescent energy of section, and received by photodetector (8) and photodetector (11) respectively.
Preferably, energy harvester (7) is for collecting the fluorescent energy between 420-600nm, and energy harvester (10) is used
In the fluorescent energy collected between 600-700nm.
Preferably, photodetector (8) and photodetector (11) be PIN photoelectric detector or, avalanche photodide
Or photomultiplier tube.
Preferably, micro-control unit (13) receives analog-digital converter (9) and the digital signal of analog-digital converter (12), to two
Data carry out ratio calculation, calculate photodetector (8) and calculate the fluorescent energy ratio that photodetector (11) receives, and will
Result shows in digital form on display (14).Microcontroller unit (13) is to the first analog-digital converter (9) and the second modulus
The data of transducer (12) carry out division operation and obtain fluorescent energy ratio.
The invention also discloses another kind of technical scheme:
The dental plaque quantitative testing device of fluorescence spectrum energy ratio, including light source (1), focussed collimated parts (2), fluorescence
Collecting part (5), dispersion element (6), energy harvester (7), energy harvester (10), photodetector (8), photodetector
(11), analog-digital converter (9), analog-digital converter (12), micro-control unit (13), display (14).The light warp that light source (1) sends
After focussed collimated parts (2), in oblique illumination to tooth samples (4).The fluorescence that tooth samples (4) is inspired is received through fluorescence
After collection parts (5), incide on dispersion element (6), place energy harvester (7) and collection of energy below at dispersion element (6)
Device (10), the fluorescent energy that energy harvester (7) is collected is received by photodetector (8), and it is glimmering that energy harvester (10) is collected
Light energy is received by photodetector (11).Energy harvester (7) and energy harvester (10) are the most certain at dispersion element (6)
Distance, is perpendicular to optical axis direction and places respectively.Photodetector (8) test surface central point and the center of energy harvester (7)
Line overlaps, and photodetector (11) test surface central point overlaps with the centrage of energy harvester (10).Photodetector (8) warp
Crossing analog-digital converter (9) data access micro-control unit (13) afterwards, photodetector (11) is followed by through analog-digital converter (12)
Entering micro-control unit (13), micro-control unit (13) is connected with display (14).
Preferably, light source (1) is the light source such as semiconductor laser or LED.
Preferably, narrow in the range of the wave-length coverage of light source (1) sent light is 400-410nm, or 400-410nm
Band.
Preferably, light beam is carried out shaping by focussed collimated parts (2), is adjusted to elongate light beam, in oblique illumination to tooth
Spot size be about 0.2mm.
Preferably, dispersion element (6) can be grating or prism.
Preferably, energy harvester (7) is for collecting the fluorescent energy between 420-600nm, and energy harvester (10) is used
In the fluorescent energy collected between 600-700nm.
Preferably, photodetector (8) and photodetector (11) be PIN photoelectric detector or avalanche photodide or
Photomultiplier tube etc..
Preferably, micro-control unit (13) receives analog-digital converter (9) and the digital signal of analog-digital converter (12), to two
Data carry out ratio calculation, and result are shown in digital form on display (14).Microcontroller unit (13) is to the first mould
The data of number converter (9) and the second analog-digital converter (12) carry out division operation and obtain fluorescent energy ratio.
After light line focus collimating components (2) that light source (1) sends, in oblique illumination to tooth samples (4), with phosphor collection
The optical axis of parts (5) has certain angle, and angle is between 0-90 degree.
The fluorescent energy of different-waveband is collected by energy harvester (7) and energy harvester (10), and spatial distribution is shown
It is intended to as shown in Figure 3.Fluorescence incides on dispersion element (6), occurs dispersion, different fluorescence spectruies to be distributed in space, energy
A range of light in space all can be collected by catcher (7) and energy harvester (10), by space various location
Place energy harvester (7) and different fluorescence spectrum energy is collected by energy harvester (10), and respectively by light electrical resistivity survey
Survey device (8) and (11) and receive detection.
The present invention utilizes the dental plaque detection device of fluorescent energy ratio, and dental plaque produces under ultraviolet excitation and is different from
The fluorescence spectrum of dental health tissue, action of ultraviolet light at fluorescent light source produced by dental surface in dental health tissue and tooth
Bacterial plaque, the fluorescence spectrum of dental health tissue is mainly distributed between 420-600nm, and the fluorescence spectrum of dental plaque is mainly distributed on
Between 600-700, the fluorescence spectrum excited is separated in space by dispersion means, by various location after dispersion means
Place energy harvester and receive the energy of different spectral bands with detector, and by the micro-control unit energy to different spectral bands
Value calculates, and shows over the display the most in digital form.Owing to using the method detection of fluorescence spectrum energy ratio
Dental plaque content, compares the method only detecting dental plaque fluorescent energy, has more objectivity, accuracy.
The dental plaque detection by quantitative of fluorescence spectrum energy ratio of the present invention, can be with objective and accurate quantitative response sensing point tooth bacterium
Speckle content, carries out detection by scanning boil on the nape opposite the mouth intracavity every bit and can obtain the distribution situation of bacterial plaque, and this invention is for instructing oral cavity
Health care and prevention oral disease are significant.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one.
Fig. 2 is the structural representation of embodiment two.
Fig. 3 is that dispersion spectra is collected and detecting structure schematic diagram.
Fig. 4 is microcontroller functional block diagram.
Detailed description of the invention
The dental plaque quantitative testing device of fluorescence spectrum energy ratio of the present invention, according to exciting light and phosphor collection structure
Difference, has various embodiments, below in conjunction with the accompanying drawings, is described in detail two of which typical case and preferred embodiment.
Embodiment one:
Fig. 1 shows exciting light and the embodiment of phosphor collection light path coaxial, and it includes light source (1), focussed collimated parts
(2), dichroic mirror (3), phosphor collection parts (5), spectral dispersion element (6), energy harvester (7), energy harvester (10),
Photodetector (8), photodetector (11), analog-digital converter (9), analog-digital converter (12), micro-control unit (13), display
Device (14), the emergent light direction of light source (1) is sequentially provided with focussed collimated parts (2), dichroic mirror (3), and dichroic mirror (3) is in inclining
Ramp-like.The side of dichroic mirror (3) arranges phosphor collection parts (5), and opposite side arranges spectral dispersion element (6).Phosphor collection
The opposite side of parts (5) disposes tooth samples (4) to be measured.The opposite side of dispersion element (6) arrange energy harvester (7),
(10), it is respectively provided with photodetector (8), (11), photodetector (8) test surface center after energy harvester (7), (10)
Point overlaps with the centrage of energy harvester (7), in photodetector (11) test surface central point and energy harvester (10)
Heart line overlaps.Photodetector (8), photodetector (11) are connected with analog-digital converter (9), analog-digital converter (12) respectively,
Analog-digital converter (9), analog-digital converter (10) are connected with micro-control unit (13), micro-control unit (13) and display (14) phase
Even.
Light source (1) can be in the range of 400-410nm a certain laser determining wavelength or centre wavelength for the most a certain
The LED of wavelength, the exciting light sent obtains the beam diameter directional light at about 0.2mm, light after focussed collimated parts (2)
Bundle incides on dichroic mirror (3) with 45 degree of angles, and the luminous reflectance less than 420nm, reflection light are compared incident illumination by dichroic mirror (3)
Having shifted towards 90 degree to incide on phosphor collection parts (5), incident illumination is irradiated to tooth along the optical axis direction of phosphor collection parts (5)
On sample (4) surface, the fluorescence packets inspired contains dental health tissue and the fluorescence of dental plaque, through phosphor collection parts (5)
Collecting and after shaping, incide on dichroic mirror (3), dichroic mirror belongs to long wave and leads to, by saturating for the wavelength light more than 420nm
Cross.The fluorescence passed through incides on dispersion element (6) with directional light, and dispersion element (6) has spectrum is carried out scattered function,
Can be grating or Amici prism.Fluorescence is after dispersion element (6), and spectrum is spatially distributed, by putting at diverse location
Put fluorescence collector (7) and the light of 420-600nm scope and 600-700nm scope can be received by fluorescence collector (10) respectively
Collection.The collectable range size of fluorescence collector is determined, to realize fluorescence receipts according to dispersion spectrum distribution situation spatially
The fluorescence of 420-600nm scope is collected by storage (7), and the fluorescence of 600-700n scope is received by fluorescence collector (10)
Collection.Or, the fluorescence of 600-700nm scope is collected by fluorescence collector (7), and fluorescence collector (10) is to 420-600nm
The fluorescence of scope is collected.Fluorescence collected by fluorescence collector (7) and fluorescence collector (10) is respectively by photodetector
(8) and photodetector (11) to be converted to the signal of telecommunication, photodetector (8) and photodetector (11) response wave length be visible ray
In spectral region, can be PIN photodiode or other photodetectors.Photodetector (8) and photodetector (11)
Distinguishing connection mode number converter (9) and analog-digital converter (12) below, convert analog signals into digital signal, digital quantity transmits
Entering micro-control unit (13), two digital quantities are done division by micro-control unit (13), calculate fluorescence spectrum energy ratio, and
Ratio is shown in digital form on display (14).As shown in Figure 4, the controller (133) in micro-control unit (13)
Under control action, input/output port (131) receives the first analog-digital converter (9) and the digital quantity of the second analog-digital converter (12),
Assume respectively a and b, and be saved in depositor (132), be calculated rate value r=a/b arithmetical unit (134).Controlling
It is saved under device (133) control action in depositor (132), and by input/output port (131) transmission to display (14).
Embodiment two:
Fig. 2 shows exciting light and the not coaxial embodiment of phosphor collection light path, and it includes light source (1), focussed collimated portion
Part (2), phosphor collection parts (5), spectral dispersion element (6), energy harvester (7), energy harvester (10), photodetector
(8), photodetector (11), analog-digital converter (9), analog-digital converter (12), micro-control unit (13), display (14), light
The emergent light direction in source (1) is provided with focussed collimated parts (2), and focussed collimated parts (2) dispose tooth to be measured along appearing light side
Tooth sample (4), tooth samples (4) is with light at an angle.The radiation direction excited along tooth samples (4) is provided with phosphor collection
Parts (5), the light that light source (1) sends forms angle with the optical axis of phosphor collection parts (5), and angle is between 0-90 degree.Fluorescence
The opposite side of collecting part (5) is provided with dispersion element (6), and it is grating or prism that dispersion element (6) is selected, dispersion element (6)
Opposite side arranges energy harvester (7), energy harvester (10), sets respectively after energy harvester (7), energy harvester (10)
Put the center of photodetector (8), photodetector (11), photodetector (8) test surface central point and energy harvester (7)
Line overlaps, and photodetector (11) test surface central point overlaps with the centrage of energy harvester (10).Photodetector (8),
Photodetector (11) selects PIN photoelectric detector, avalanche photodide or photomultiplier tube etc..Photodetector (8), light
Electric explorer (11) is connected with analog-digital converter (9), analog-digital converter (12) respectively, analog-digital converter (9), analog-digital converter
(10) being connected with micro-control unit (13), micro-control unit (13) is connected with display (14).The content of micro-control unit (13)
Reference example one.
Light source (1) can be in the range of 400-410nm a certain laser determining wavelength or centre wavelength for the most a certain
The LED of wavelength, the exciting light sent obtains the beam diameter directional light at about 0.2mm, light after focussed collimated parts (2)
Bundle incides on tooth samples (4) surface at a certain angle, and the fluorescence packets inspired is glimmering containing dental health tissue and dental plaque
Light, after phosphor collection parts (5) collect also shaping, fluorescence incides on dispersion element (6) with directional light, dispersion element
(6) have spectrum is carried out scattered function, can be grating or Amici prism.Fluorescence is after dispersion element (6), and spectrum exists
Spatially be distributed, by diverse location place fluorescence collector (7) and fluorescence collector (10) can be respectively to 420-600nm model
Enclose the light with 600-700nm scope to be collected.Determine that fluorescence collector can according to dispersion spectrum distribution situation spatially
The range size collected, is collected the fluorescence of 420-600nm scope realizing fluorescence collector (7), fluorescence collector
(10) fluorescence of 600-700n scope is collected.Or, the fluorescence of 600-700nm scope is carried out by fluorescence collector (7)
Collecting, the fluorescence of 420-600nm scope is collected by fluorescence collector (10).Fluorescence collector (7) and fluorescence collector
(10) fluorescence collected by is converted to the signal of telecommunication, photodetector (8) by photodetector (8) and photodetector (11) respectively
In being visible spectrum with photodetector (11) response wave length, can be PIN photodiode or other photodetections
Device.Photodetector (8) and photodetector (11) connection mode number converter (9) and analog-digital converter (12) the most respectively, will
Analogue signal is converted to digital signal, and digital quantity is transferred into micro-control unit (13), and micro-control unit (13) is to two numerals
Amount does division, calculates fluorescence spectrum energy ratio, and is shown in digital form by ratio on display (14).
The dental plaque quantitative testing device of fluorescence spectrum energy ratio of the present invention, its light source sends action of ultraviolet light at tooth
On, the fluorescence that dental plaque sends incides spectral dispersion device through collecting after shaping, by after spectral dispersion device not
Place energy harvester at co-located, collect the fluorescent energy between 600nm-700nm and 420nm-600nm respectively, and pass through
Microcontroller calculates the energy ratio of two wave bands, shows with numeric form, for the content of quantitative assessment dental plaque.
Those of ordinary skill in the art it should be appreciated that above example be intended merely to illustrate the present invention, and
It is not intended as limitation of the invention, as long as within the scope of the invention, change, the modification of above example all will be fallen at this
The protection domain of invention.
Claims (11)
1. the dental plaque quantitative testing device of fluorescence spectrum energy ratio, is characterized in that including light source (1), focussed collimated parts
(2), dichroic mirror (3), phosphor collection parts (5), dispersion element (6), the first energy harvester (7), the second energy harvester
(10), the first photodetector (8), the second photodetector (11), the first analog-digital converter (9), the second analog-digital converter
(12), micro-control unit (13), display (14), after light line focus collimating components (2) that light source (1) sends, and through two to
Color mirror (3) reflection is irradiated on tooth samples (4) through phosphor collection parts (5) after turning to, and tooth samples (4) is inspired
Fluorescence is after phosphor collection parts (5), through dichroic mirror (3), incides on dispersion element (6), dispersion element (6) it
After the first energy harvester (7) and the second energy harvester (10) are set, the fluorescent energy that the first energy harvester (7) is collected by
First photodetector (8) receives, and the fluorescent energy that the second energy harvester (10) is collected is connect by the second photodetector (11)
Receive；First photodetector (8) is data access micro-control unit (13) after the first analog-digital converter (9), the second smooth electrical resistivity survey
Survey device (11) to be followed by into micro-control unit (13), micro-control unit (13) and display (14) through the second analog-digital converter (12)
It is connected.
2. the dental plaque quantitative testing device of fluorescence spectrum energy ratio as claimed in claim 1, is characterized in that: light source (1) is
Semiconductor laser or LED.
3. the dental plaque quantitative testing device of fluorescence spectrum energy ratio as claimed in claim 1 or 2, is characterized in that: light source (1)
Sending the wave-length coverage of light is the arrowband in the range of 400-410nm, or 400-410nm.
4. the dental plaque quantitative testing device of fluorescence spectrum energy ratio as claimed in claim 1, is characterized in that: dichroic mirror
(3) installation direction is 45 degree with the optical axis direction angle of phosphor collection parts (5).
5. the dental plaque quantitative testing device of fluorescence spectrum energy ratio as described in claim 1 or 4, is characterized in that: dichroic
The light that mirror (3) is less than 420nm to wavelength reflects, and carries out transmission for the light more than 420nm.
6. the dental plaque quantitative testing device of fluorescence spectrum energy ratio as claimed in claim 1, is characterized in that: the first energy is received
Storage (7), the second energy harvester (10) collect between 420nm-600nm, 600-700nm respectively or 420nm-600nm it
Between the fluorescent energy of certain wave band between certain wave band, 600-700nm.
7. the dental plaque quantitative testing device of fluorescence spectrum energy ratio, is characterized in that: include light source (1), focussed collimated parts
(2), phosphor collection parts (5), dispersion element (6), the first energy harvester (7), the second energy harvester (10), the first photoelectricity
Detector (8), the second photodetector (11), the first analog-digital converter (9), the second analog-digital converter (12), micro-control unit
(13), display (14)；After light line focus collimating components (2) that light source (1) sends, in oblique illumination to tooth samples (4)；Tooth
The fluorescence that tooth sample (4) is inspired, after phosphor collection parts (5), incides on dispersion element (6), at dispersion element
(6) after, the first energy harvester (7) and the second energy harvester (10), the fluorescence that the first energy harvester (7) is collected are set
Energy is received by the first photodetector (8), and the fluorescent energy that the second energy harvester (10) is collected is by the second photodetector
(11) receive；First photodetector (8) is data access micro-control unit (13) after the first analog-digital converter (9), and second
Photodetector (11) is followed by into micro-control unit (13), micro-control unit (13) and display through the second analog-digital converter (12)
Device (14) is connected.
8. the dental plaque quantitative testing device of fluorescence spectrum energy ratio as claimed in claim 7, is characterized in that: light source (1) is sent out
The light gone out forms angle with the optical axis of phosphor collection parts (5), and angle is between 0-90 degree.
9. the dental plaque quantitative testing device of fluorescence spectrum energy ratio as claimed in claim 7, is characterized in that: dispersion element
(6) select as grating or prism.
10. the dental plaque quantitative testing device of fluorescence spectrum energy ratio as claimed in claim 7, is characterized in that: the first photoelectricity
Detector (8), the second photodetector (11) select PIN photoelectric detector, avalanche photodide or photomultiplier tube.
The dental plaque quantitative testing device of 11. fluorescence spectrum energy ratios as claimed in claim 7, is characterized in that: microcontroller list
Position (13) carries out division operation to the data of the first analog-digital converter (9) and the second analog-digital converter (12) and obtains fluorescent energy ratio
Rate.
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| CN201610374159.9A CN106124459A (en) | 2016-05-30 | 2016-05-30 | The dental plaque quantitative testing device of fluorescence spectrum energy ratio |
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| CN110769746A (en) * | 2017-06-21 | 2020-02-07 | 皇家飞利浦有限公司 | Method and apparatus for early caries detection |
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