CN108896532A - A kind of hand-held displacement difference Raman spectrometer - Google Patents
A kind of hand-held displacement difference Raman spectrometer Download PDFInfo
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- CN108896532A CN108896532A CN201810837772.9A CN201810837772A CN108896532A CN 108896532 A CN108896532 A CN 108896532A CN 201810837772 A CN201810837772 A CN 201810837772A CN 108896532 A CN108896532 A CN 108896532A
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- 238000001069 Raman spectroscopy Methods 0.000 title claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 title abstract description 7
- 108090000565 Capsid Proteins Proteins 0.000 claims abstract description 41
- 239000000523 sample Substances 0.000 claims abstract description 41
- 238000001228 spectrum Methods 0.000 claims abstract description 29
- 238000001237 Raman spectrum Methods 0.000 claims abstract description 26
- 239000004065 semiconductor Substances 0.000 claims abstract description 19
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 26
- 239000013307 optical fiber Substances 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 239000011796 hollow space material Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
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- 230000001154 acute effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 2
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 22
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- 210000003813 thumb Anatomy 0.000 description 2
- 208000007623 Lordosis Diseases 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000002117 illicit drug Substances 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 230000003595 spectral effect Effects 0.000 description 1
- 238000001845 vibrational spectrum Methods 0.000 description 1
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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
- G01N21/65—Raman scattering
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Abstract
The present invention discloses a kind of hand-held displacement difference Raman spectrometer, including shell, laser, optic probe, Raman spectrum processor and spectrum display screen, shell is rectangle structure, laser is semiconductor laser with tunable, control switch is installed in housing outer surface, Raman spectrum processor is the difference spectrum processor based on SERDS system, above-mentioned spectrum display screen is installed in procapsid, above-mentioned spectrum display screen is TFT liquid crystal display, the front of above-mentioned procapsid offers the display window exposed for the display surface of this TFT liquid crystal display, and above-mentioned procapsid is equipped with the front shroud for opening or closing this display window, the back side of above-mentioned back casing is integrally formed with the handle held for user.Raman spectrometer of the invention influence detection application will not by fluorescence excessively using the cooperation of laser and difference spectrum processor, and detection has a wide range of application; and have small in size, it is easy to carry about with one, operation is simple, conveniently; facilitate the outgoing detection of inspector, and display screen is enable to protect.
Description
Technical field
The present invention relates to spectral detection field, in particular to a kind of Raman spectrometer.
Background technique
Raman spectrum analysis is a kind of powerful nondestructive material detection and identification technology.It is a kind of molecular vibration spectrum,
It can reflect the fingerprint characteristic of molecule, can be used for the detection to substance.Raman spectrometer is by detection determinand for excitation
Raman spectrum caused by the Raman scattering effect of light detects and identifies substance.Raman spectrometer has been widely used for liquid
The fields such as safety check, jewelry detection, explosive detection, illicit drugs inspection, drug detection, therefore Raman spectrum detection technique is gradually walked
Laboratory out, into the bright outlook of all trades and professions and huge numbers of families.It is well known that Raman spectrum detector is to food and medicine
When product examine is surveyed, it because of the influence for the bias light that article is placed, interfere Raman spectrum detection process can along with strong fluorescence, it is glimmering
The presence of light seriously affects the identification of the characteristic peak of Raman spectrum, and fluorescence interference is a very big obstacle, examines Raman spectrum
The application for surveying instrument is limited, meanwhile, the volume of Raman spectrum detector is larger, be equivalent to the volume of a desktop computer, volume compared with
Greatly, it should not go out to carry and use.
In view of this, inventor furthers investigate the above problem, there is this case generation then.
Summary of the invention
The purpose of the present invention is to provide a kind of small in size, portable, the unrestricted hand-held displacement difference of detection application
Raman spectrometer.
In order to achieve the above object, the present invention uses such technical solution：
A kind of hand-held displacement difference Raman spectrometer, including shell, laser, optic probe, Raman spectrum processor
With spectrum display screen, the first end end of optic probe has launching fiber port and reception optical fiber port, and above-mentioned shell is in length
Square structure, above-mentioned shell are locked together by procapsid and back casing, and front housing and the rear housing is surrounded by a hollow space,
Above-mentioned laser and above-mentioned Raman spectrum processor are mounted on above-mentioned back casing and in hollow spaces, above-mentioned laser
For semiconductor laser with tunable, using the length direction of shell as up and down direction, the first end of above-mentioned optic probe is in shell
Hollow space in, the second end of above-mentioned optic probe is stretched out outside the upper end end face of shell, above-mentioned semiconductor laser with tunable
Below first end in optic probe, and the transmitting terminal of above-mentioned semiconductor laser with tunable is by importing optical fiber and above-mentioned light
The launching fiber port connection of probe is learned, the control of control semiconductor laser with tunable work is installed in above-mentioned housing outer surface
System switch, the reception optical fiber port of above-mentioned optic probe are connected by collecting the input terminal of optical fiber and above-mentioned Raman spectrum processor
It connects, above-mentioned Raman spectrum processor is mounted on above-mentioned back casing and sets side by side with above-mentioned semiconductor laser with tunable or so
It sets, above-mentioned Raman spectrum processor is the difference spectrum processor based on SERDS system, is equipped with above-mentioned light in above-mentioned procapsid
Display screen is composed, above-mentioned spectrum display screen is TFT liquid crystal display, and the front of above-mentioned procapsid offers the display for this TFT liquid crystal display
The exposed display window in face, and above-mentioned procapsid is equipped with the front shroud for opening or closing this display window, above-mentioned back casing
The back side is integrally formed with the handle held for user.
Above-mentioned shell is plastic casing, and above-mentioned procapsid is locked together with above-mentioned back casing by screw, above-mentioned rear shell
The upper rear portion of body is integrally formed with the above-mentioned handle extended in left-right direction, and above-mentioned handle is by arranged on left and right sides and backward
Extend the vertical bar vertical with the back casing back side and the cross bar being connected between two vertical bar rear end ends composition, above-mentioned cross bar is towards upper
That states back casing is recessed with four along cross bar up and down direction through the perpendicular recess extended on one side, and each perpendicular recess is along the right and left of cross bar
To being alternatively arranged.
Above-mentioned perpendicular recess is in concave arc shape.
Above-mentioned semiconductor laser with tunable is Littrow structure outside cavity gas laser.
The front of above-mentioned procapsid is located at display window and is externally provided with integrally formed mounting blocks, and above-mentioned mounting blocks, which have, to be in
Display window arranged on left and right sides is outer vertical with procapsid and the side plate that extends forward, is connected between the forward end of both side plate
Preceding sealing plate and the upper plate connected together with the upper end end of both side plate and the upper end end of preceding sealing plate, above-mentioned side plate and it is above-mentioned before
Sealing plate, which is constituted, a bar shaped square groove extended along the up and down direction of procapsid, offers on above-mentioned preceding sealing plate along preceding sealing plate upper and lower
To the oblong openings of extension, before the lower end of above-mentioned oblong openings passes to outside the bottom surface of sealing plate, at above-mentioned display window
In the range of above-mentioned oblong openings, the arranged on left and right sides edge of said front-covering panel is correspondingly embedded in in two bar shaped square grooves, and on
It states front shroud, mounting blocks and above-mentioned procapsid and is equipped with the location structure fixed for front shroud positioning.
The front of above-mentioned procapsid correspond in the lower end of two bar shaped square grooves in the upper ends of two bar shaped square grooves to lordosis
Equipped with locating piece, two locating pieces of two bar shaped square groove lower ends are arranged with respect to position, and two locating pieces in bar shaped square groove are arranged with respect to position,
The bottom surface of each locating piece is in the insertion guiding surface tilted down, and the upper top surface of each locating piece skids off guiding in acclivitous
Inclined-plane is inserted into guiding surface and slides to the loudspeaker moulding that guiding surface constitutes flaring from front to back, on the back side of said front-covering panel
Portion is convexly equipped with limited block backward at the position corresponding to the locating piece of bar shaped square groove, above-mentioned limited block is mutually in its top surface with bottom surface
The vee-block of acute angle setting, and the top surface of above-mentioned vee-block is in the acclivitous inclination to match with above-mentioned insertion guiding surface
The bottom surface in face, above-mentioned vee-block is in and the above-mentioned inclined surface tilted down for skidding off guiding surface and matching；The top of said front-covering panel
Face arranged on left and right sides is extended with locating rod respectively backward, and above-mentioned upper plate inner bottom surface corresponds to concave up be equipped at two locating rods and supplies
This locating rod is embedded in interior locating recesses, and above-mentioned locating piece, limited block, locating rod and locating recesses constitute the positioning knot
Structure.
The leading flank lower part of said front-covering panel is convexly equipped with several bar shaped raised lines extended along preceding sealing plate left and right directions, each item
Shape raised line is close to arrangement along the vertical direction.
Above-mentioned side plate and the above-mentioned preceding arc-shaped chamfered transition of sealing plate, above-mentioned side plate and above-mentioned upper plate and above-mentioned upper plate with
The above-mentioned arc-shaped chamfered transition of preceding sealing plate.
After adopting the above technical scheme, a kind of hand-held of the invention is displaced difference Raman spectrometer, its working principle is that:
Article to be detected is placed on desktop or on hand, tester holds handle and the second end of the optic probe on shell is directed at object
Product, and stretched out with the thumb for holding shell that hand and press control switch, control switch is opened, and tunable semiconductor swashs
The starting of light device, semiconductor laser with tunable issue the laser of two beam different wave lengths, and two laser expose to be checked through optic probe
Article is surveyed, detection article generates Raman light, and Raman light is transmitted to the difference based on SERDS system through optic probe and collection optical fiber
Spectrum processor can reliably be restored from difference spectrum out just using the displacement difference Raman spectroscopy of SERDS system
Normal Raman signal influence the application of Raman spectrometer of the invention will not by fluorescence excessively, and detection has a wide range of application, and
Semiconductor laser with tunable is small in size, whole volume similar to two mobile phone thickness mobile phone shape, it is small in size, be easy to carry about with one,
Facilitate the outgoing detection of inspector, meanwhile, show that Raman spectrometer can by spectrum when being not used by the front shroud at display window
Display screen stashes, and on the one hand plays the role of dust-proof, loss prevention to display screen, on the other hand gives the transport and carrying of Raman spectrometer
It brings convenience, sharp object in transport or carrying is avoided to stab display screen；The combination of handle and control switch is cooperated to make to examine again
Survey person can be operated simply, conveniently with one-handed performance.
Detailed description of the invention
Fig. 1 is perspective view of the invention；
Fig. 2 is stereogram exploded view of the invention；
Fig. 3 is opening schematic diagram of the invention；
Fig. 4 is the perspective view that the present invention omits front shroud.
Specific embodiment
In order to further explain the technical solution of the present invention, being described in detail with reference to the accompanying drawing.
A kind of hand-held of the invention is displaced difference Raman spectrometer, as shown in Figs 1-4, including shell 1, laser (figure
In be not drawn into), optic probe 2, Raman spectrum processor (being not drawn into figure) and spectrum display screen 3, the first end of optic probe 2
End have launching fiber port and reception optical fiber port, this optic probe 2 using well known to existing market be used for Raman light
The optical path probe of spectrum detection, is a well-known technique, is not repeated herein.In the present invention, the laser, optic probe, Raman light
The work in combination principle of processor and spectrum display screen is composed using existing principle, is not repeated herein.
Innovation of the invention is：The laser is semiconductor laser with tunable, this tunable semiconductor
Laser it is excellent it is good be Littrow structure outside cavity gas laser, Raman spectrum processor be based on SERDS system difference spectrum processing
Device makes shell may be provided with very small structure using Littrow structure outside cavity gas laser characteristic small in size, i.e. shell 1 is excellent
It is good to be rectangle structure, the size of shell 1 it is excellent it is good be 18cm*10cm*8cm, shell 1 is existed by procapsid 11 and the locking of back casing 12
Together, shell 1 is plastic casing, and the inner surface quadrangle of procapsid 11 and the inner surface interior angle of back casing 12 are integrally formed with phase
Align the screw hole post that fits together, and the back side of back casing 12 corresponds at four screw hole posts and offers and screw hole post phase
The screw of contraposition is perforated, and procapsid 11 is locked together with back casing 12 by screw, and procapsid 11 is surrounded with back casing 12
There is a hollow space, i.e. there is procapsid 11 top surface, bottom surface, left side, right side and leading flank to constitute, and back casing 12 has top
Face, bottom surface, left side, right side and trailing flank are constituted, and the Littrow structure outside cavity gas laser and are based on SERDS system
Difference spectrum processor be mounted on the inner surface of back casing 12 and in the hollow space in shell 1, it is tunable partly to lead
Body laser and the difference spectrum processor based on SERDS system are arranged side by side in left and right, and the optic probe 2 is along shell 1
Up and down direction be vertically arranged, and the lower end of optic probe 2 is in the hollow space of shell 1, the lower end locking of optic probe 2
On the inner surface of back casing 12, the upper end of optic probe 2 is stretched out outside the upper end end face of shell 1, i.e. the upper end end of optic probe 2
Portion is end of probe, and the top surface of procapsid and the top surface of back casing are recessed for being caught in equipped with the half position for 2 end of probe of optic probe
In interior concave arc chamber, semiconductor laser with tunable is in below the lower end of optic probe 2, and semiconductor laser with tunable
Transmitting terminal is connect by importing optical fiber with the launching fiber port of optic probe 2, the transmitting terminal of this semiconductor laser with tunable
With the matching relationship of optic probe 2 using well-known technique, it is equipped with that control is tunable partly to be led outside the right side wall top of shell 1
The control switch 4 of body laser work, the bottom surface of shell 1 are equipped with the power switch for controlling entire Raman spectrometer opening and closing, this
Control switch and the mode of connection of power switch are the modes of connection common in existing control system, are not repeated herein, optics
The reception optical fiber port of probe 2 is connect by collecting optical fiber with the input terminal of Raman spectrum processor, obtains optic probe 2
Raman light gives Raman spectrum processor through collecting optical fiber tradition, and spectrum display screen 3, spectrum display screen 3 are equipped in procapsid 11
For TFT liquid crystal display, this TFT liquid crystal display is touch screen, is able to achieve man-machine interactive operation, the procapsid 11 using this touch screen
Front offer the display window 100 exposed for the display surface of this TFT liquid crystal display, and procapsid 11 is equipped with and opens or closes
The front shroud 5 of this display window, the back side of back casing 12 is integrally formed with the handle (being not drawn into figure) held for user, tool
Body, the upper rear portion of back casing 12 is integrally formed with this handle extended in left-right direction, this handle is by being in left and right two
Side and the vertical bar for extending back vertical with the back casing back side and the cross bar being connected between two vertical bar rear end ends composition.
A kind of hand-held of the invention is displaced difference Raman spectrometer, entire circuit control principle be it is well known herein not
It is described in detail again, substantially working principle is:When detection, power switch is opened, Raman spectrometer starting, Raman spectrum processing
Device initialization, spectrum display screen 3 lights, and article to be detected is placed on desktop or on hand, tester holds the cross bar of handle
The upper end (i.e. end of probe) of optic probe 2 on shell 1 is directed at article, and is stretched out with the thumb for holding 1 that hand of shell
Control switch 4 are pressed, control switch 4 is opened, and the starting of Littrow structure outside cavity gas laser utilizes Littrow structure exocoel
The characteristic of laser issues the laser of two beam different wave lengths, and two laser expose to article to be detected through optic probe respectively, detects
Article generates Raman light, and Raman light is transmitted to the difference spectrum processor based on SERDS system through optic probe and collection optical fiber,
Two Raman spectrums are subtracted each other to obtain difference spectrum using the displacement difference Raman spectroscopy of SERDS system and pass through Computer Corp.
Normal Raman signal out can be reliably restored from difference spectrum, effectively inhibit the application of Raman spectrometer of the invention
The interference of fluorescence, will not excessively be influenced, detection has a wide range of application by fluorescence.
Hand-held of the invention is displaced difference Raman spectrometer, the beneficial effect is that：
One, Littrow structure outside cavity gas laser and the combination based on SERDS system make the application of Raman spectrometer not by glimmering
The influence of light, detection have a wide range of application, and can directly measure black ABS plastic and sunset yellow sample, not will cause black ABS
Plastics are burnt out, and are the improvement of Raman spectroscopy；
Two, it is substantially reduced the volume volume of shell 1 using Littrow structure outside cavity gas laser, entire shape is similar to two
The mobile phone shape of a mobile phone thickness can be detected using hand-held, small in size, be easy to carry about with one, and the outgoing detection of inspector is facilitated；
Three, keep tester single by the position setting of the handle of back casing, the setting position of handle and control switch
Hand operation, and be easy to tester and detect gripping, operation is simply, conveniently；
Four, it close spectrometer interval can by laser when using using the control switch being separately provided, without work always
Make, avoid laser impaired to other articles, use is safe, and energy conservation；
Five, make Raman spectrometer that spectrum display screen 3 can stash when being not used by front shroud 5, on the one hand to light
Spectrum display screen play the role of dust-proof, loss prevention, on the other hand brought convenience to the transport of Raman spectrometer and carrying, avoid transport or
Sharp object stabs display screen in carrying.
In the present invention, the cross bar of the handle is recessed with four along cross bar up and down direction towards 12 back side of back casing on one side
Through the perpendicular recess of extension, each perpendicular recess is alternatively arranged along the left and right directions of cross bar, and erecting recess is in concave arc shape；In this way, when holding
Four fingers of hand, which can be corresponded to just, to be caught in four perpendicular recess, increases grippings degree, and when detection will not make spectrometer cunning from hand
It falls, and holds comfortable.
In the present invention, the front of the procapsid 11 is located at display window and is externally provided with integrally formed mounting blocks 13, peace
Dress block 13 has in the side plate that display window arranged on left and right sides is outer vertical with procapsid and extends forward, is connected in both side plate
Preceding sealing plate between forward end and the upper plate connected together with the upper end end of both side plate and the upper end end of preceding sealing plate, side
Plate and the arc-shaped chamfered transition of preceding sealing plate, side plate and upper plate and upper plate and the arc-shaped chamfered transition of preceding sealing plate, side plate with
Preceding sealing plate constitutes a L-shaped structure and is formed with a bar shaped square groove 200 extended along the up and down direction of mounting blocks 13, opens on preceding sealing plate
Equipped with the oblong openings 131 extended along preceding sealing plate up and down direction, the bottom of sealing plate before the lower end of oblong openings 131 passes to
Outside face, i.e. the lower end of oblong openings 131 passes to outside the bottom surface of mounting blocks 13, and display window 100 is in oblong openings
In the range of 131, the arranged on left and right sides edge of front shroud 4 is correspondingly embedded in in two bar shaped square grooves 200, and front shroud 4, mounting blocks
13 are equipped with the location structure that fixation is positioned for front shroud 4 with procapsid 12；Particularly, the front of procapsid 12 corresponds to two
Locating piece 121 is convexly equipped with forward in the lower end of the bar shaped square groove 200 and upper end of two bar shaped square grooves 200, under two bar shaped square grooves
Two locating pieces at end are arranged with respect to position, and two locating pieces in bar shaped square groove are arranged with respect to position, i.e. upper and lower two positioning in left side
Block is with respect to position, and upper and lower two in right side position opposite position, and left and right two locating piece in downside is with respect to position, in upside
Left and right two locating piece is in the insertion guiding surface tilted down with respect to position, the bottom surface of each locating piece 121, each locating piece 121
Upper top surface skids off guiding surface in acclivitous, and insertion guiding surface constitutes the loudspeaker of flaring from front to back with guiding surface is slided to
Moulding, the upper rear portion of front shroud 4 are convexly equipped with limited block 41 at the position corresponding to the locating piece of bar shaped square groove backward, limit
Block 41 in the mutual setting at an acute angle in its top surface and bottom surface vee-block, and the top surface of vee-block be in insertion guiding surface match to
Upper inclined inclined surface, the bottom surface of vee-block are in and the inclined surface tilted down that skids off guiding surface and match, i.e. limited block 41
In sharp shape tapered from front to back；The top surface arranged on left and right sides of front shroud 4 is extended with locating rod 42, two locating rods respectively backward
Between 42 two locating pieces 12 in procapsid upper end, upper plate inner bottom surface corresponds to concave up be equipped at two locating rods 42 and supplies this
Locating rod is embedded in interior locating recesses 132, and locating piece, limited block, locating rod and locating recesses constitute the location structure；
In application, peace is inserted into along the lower end port of the lower end notch through bar shaped square groove 200 and oblong openings 131 in the front end of front shroud 4
It fills in block 13, and along the two bar shaped square grooves 200 of arranged on left and right sides edge insertion of front shroud 4, and two limited blocks 41 of front shroud 4 are encountered
When locating piece 121 at procapsid lower end, pass through the oblique of limited block top surface bevel structure and bottom surface of positioning block using limited block 41
Face knot guiding and crossing locating piece 121 enables the upward sliding in bar shaped square groove 200 of front shroud 4, if in upward sliding limit
When position block 41 encounters the locating piece 121 at procapsid upper end again, while locating piece 121 is crossed using inclined-plane characteristic, makes to limit
The bottom surface of position block 41 is hooked on the top surface of the locating piece 121 at procapsid upper end, while locating rod 42 is caught in locating recesses
In 132, the fixed placement of front shroud 4 is realized, slide front shroud 4 when transport will not after closing to display window；Similarly,
When opening display window, slightly firmly to downslide front shroud 4, the limited block 41 of front shroud 4 is led using the inclined-plane of bottom surface with skidding off
Cooperation to inclined-plane can cross locating piece, release locating piece to the buckle of limited block, front shroud 4 is able to easily make to downslide
Display window can be opened gradually, and after display window fully opens, limited block 41 is just slided on the locating piece of procapsid lower end,
The bottom surface of limited block 41 is just hold by the top surface top of locating piece, and front shroud 4 can not be skidded off freely outside mounting blocks, make spectrometer
Used time front shroud will not be separated with shell, easy to use.
Preferably, the leading flank lower part of front shroud 4 is convexly equipped with several bar shaped raised lines extended along front shroud left and right directions
43, each bar shaped raised line 43 is close to arrangement along the vertical direction, tester can be facilitated to push front shroud 4 using each bar shaped raised line 43.
Product form of the invention is not limited to this case diagram and embodiment, anyone carries out the appropriate of similar thinking to it
Changes or modifications all should be regarded as not departing from patent category of the invention.
Claims (8)
1. a kind of hand-held is displaced difference Raman spectrometer, including shell, laser, optic probe, Raman spectrum processor and
The first end end of spectrum display screen, optic probe has launching fiber port and reception optical fiber port, it is characterised in that：It is above-mentioned
Shell is rectangle structure, and above-mentioned shell is locked together by procapsid and back casing, and front housing and the rear housing is surrounded by one
Hollow space, above-mentioned laser and above-mentioned Raman spectrum processor are mounted on above-mentioned back casing and in hollow spaces,
Above-mentioned laser is semiconductor laser with tunable, using the length direction of shell as up and down direction, the first of above-mentioned optic probe
In the hollow space of shell, the second end of above-mentioned optic probe is stretched out outside the upper end end face of shell at end, and above-mentioned tunable half
Conductor laser is in below the first end of optic probe, and the transmitting terminal of above-mentioned semiconductor laser with tunable is by importing light
It is fine to be connect with the launching fiber port of above-mentioned optic probe, control tunable semiconductor laser is installed in above-mentioned housing outer surface
The control switch of device work, the reception optical fiber port of above-mentioned optic probe is by collecting optical fiber and above-mentioned Raman spectrum processor
Input terminal connection, above-mentioned Raman spectrum processor are mounted on above-mentioned back casing and with above-mentioned semiconductor laser with tunable or so
It is arranged side by side, above-mentioned Raman spectrum processor is the difference spectrum processor based on SERDS system, is equipped in above-mentioned procapsid
Above-mentioned spectrum display screen, above-mentioned spectrum display screen are TFT liquid crystal display, and the front of above-mentioned procapsid is offered for this TFT liquid crystal display
The exposed display window of display surface, and above-mentioned procapsid is equipped with the front shroud for opening or closing this display window, after above-mentioned
The back side of shell is integrally formed with the handle held for user.
2. a kind of hand-held according to claim 1 is displaced difference Raman spectrometer, it is characterised in that：Above-mentioned shell is modeling
Material shell body, above-mentioned procapsid are locked together with above-mentioned back casing by screw, and the upper rear portion of above-mentioned back casing is integrally formed
There is the above-mentioned handle extended in left-right direction, above-mentioned handle is by being in arranged on left and right sides and extending back vertical with the back casing back side
Vertical bar and the cross bar composition that is connected between two vertical bar rear end ends, above-mentioned cross bar is recessed on one side towards above-mentioned back casing
Four run through the perpendicular recess extended along cross bar up and down direction, and each perpendicular recess is alternatively arranged along the left and right directions of cross bar.
3. a kind of hand-held according to claim 2 is displaced difference Raman spectrometer, it is characterised in that：It is above-mentioned it is perpendicular recess be in
Concave arc shape.
4. a kind of hand-held according to claim 1 is displaced difference Raman spectrometer, it is characterised in that：Above-mentioned tunable half
Conductor laser is Littrow structure outside cavity gas laser.
5. a kind of hand-held according to claim 1 is displaced difference Raman spectrometer, it is characterised in that：Above-mentioned procapsid
Front is located at display window and is externally provided with integrally formed mounting blocks, and above-mentioned mounting blocks have outside display window arranged on left and right sides
Side plate that is vertical with procapsid and extending forward, the preceding sealing plate being connected between the forward end of both side plate and upper with both side plate
The upper plate that connects together of upper end end of end end and preceding sealing plate, above-mentioned side plate and above-mentioned preceding sealing plate composition have one along procapsid
The bar shaped square groove that extends of up and down direction, the oblong openings extended along preceding sealing plate up and down direction are offered on above-mentioned preceding sealing plate,
Before the lower end of above-mentioned oblong openings passes to outside the bottom surface of sealing plate, above-mentioned display window is in the model of above-mentioned oblong openings
In enclosing, the arranged on left and right sides edge of said front-covering panel is correspondingly embedded in in two bar shaped square grooves, and said front-covering panel, mounting blocks with it is upper
It states procapsid and is equipped with the location structure fixed for front shroud positioning.
6. a kind of hand-held according to claim 5 is displaced difference Raman spectrometer, it is characterised in that：Above-mentioned procapsid
Front corresponds in the lower end of two bar shaped square grooves and is convexly equipped with locating piece, two bar shaped square grooves forward in the upper end of two bar shaped square grooves
Two locating pieces of lower end are arranged with respect to position, and two locating pieces in bar shaped square groove are arranged with respect to position, the bottom surface of each locating piece in
Under inclined insertion guiding surface, the upper top surface of each locating piece skids off guiding surface in acclivitous, insertion guiding surface with
The loudspeaker moulding that guiding surface constitutes flaring from front to back is slided to, the upper rear portion of said front-covering panel corresponds to determining for bar shaped square groove
Be convexly equipped with limited block backward at the position of position block, above-mentioned limited block in the mutual setting at an acute angle in its top surface and bottom surface vee-block, and on
The top surface for stating vee-block is in the acclivitous inclined surface that matches with above-mentioned insertion guiding surface, the bottom surface of above-mentioned vee-block be in
The above-mentioned inclined surface tilted down for skidding off guiding surface and matching；The top surface arranged on left and right sides of said front-covering panel is prolonged respectively backward
Stretching has locating rod, and above-mentioned upper plate inner bottom surface corresponds to concave up be equipped at two locating rods and is embedded in interior positioning for this locating rod
Recess, above-mentioned locating piece, limited block, locating rod and locating recesses constitute the location structure.
7. a kind of hand-held according to claim 5 is displaced difference Raman spectrometer, it is characterised in that：Said front-covering panel
Leading flank lower part is convexly equipped with several bar shaped raised lines extended along preceding sealing plate left and right directions, and each bar shaped raised line is close to along the vertical direction
Arrangement.
8. a kind of hand-held according to claim 5 is displaced difference Raman spectrometer, it is characterised in that：Above-mentioned side plate with it is upper
Before stating the arc-shaped chamfered transition of sealing plate, above-mentioned side plate and above-mentioned upper plate and above-mentioned upper plate and above-mentioned preceding sealing plate it is arc-shaped fall
Angle transition.
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| CN201810837772.9A CN108896532A (en) | 2018-07-26 | 2018-07-26 | A kind of hand-held displacement difference Raman spectrometer |
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| CN201810837772.9A CN108896532A (en) | 2018-07-26 | 2018-07-26 | A kind of hand-held displacement difference Raman spectrometer |
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| CN202661171U (en) * | 2012-06-21 | 2013-01-09 | 必达泰克光电设备(上海)有限公司 | Handheld raman spectrometer |
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| CN208432538U (en) * | 2018-07-26 | 2019-01-25 | 黎明职业大学 | A kind of hand-held displacement difference Raman spectrometer |
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| CA2217055A1 (en) * | 1995-03-31 | 1996-10-03 | Litton Systems, Inc. | Compact laser apparatus and method |
| CN202661171U (en) * | 2012-06-21 | 2013-01-09 | 必达泰克光电设备(上海)有限公司 | Handheld raman spectrometer |
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