CN203967509U - Six wavelength evidence at the scene laser detectors - Google Patents
Six wavelength evidence at the scene laser detectors Download PDFInfo
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- CN203967509U CN203967509U CN201420267352.9U CN201420267352U CN203967509U CN 203967509 U CN203967509 U CN 203967509U CN 201420267352 U CN201420267352 U CN 201420267352U CN 203967509 U CN203967509 U CN 203967509U
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Abstract
The utility model discloses a kind of six wavelength evidence at the scene laser detectors, be characterized in, comprising: two groups of laser generation systems and a single Laser output passage; In two groups of laser generation systems, wherein one group of laser generation system comprises one first laser emitting module and is arranged on the long-living one-tenth light path of first wave, second wave length generation light path, the three-wavelength generation light path of the first laser emitting module outlet side; Another group laser generation system comprises one second laser emitting module and is arranged on the 4th wavelength generation light path of the second laser emitting module outlet side, the 5th wavelength generation light path, the 6th wavelength generation light path.The laser of six wavelength generation light paths output is pooled to a single Laser output passage output by multiple speculums.Realized contain material evidence survey main wave band six wavelength integrated, meet to greatest extent in science and technology concerning criminal matters the demand of different vestige different wave length searchlighting in scene inspection process, there is compact conformation, stable performance, easy to operate, conversion efficiency advantages of higher.
Description
Technical field
The utility model relate to a kind of utilize optical frequency-doubling and and frequently technology realize and contain evidence at the scene and survey required main laser wavelength, be applied to the six wavelength evidence at the scene laser detectors that evidence at the scene is surveyed.
Background technology
Public security department is carrying out suspect's individual biological specimen information in the process of effectively screening, often manifesting and extracting as one of most important link of searching Evidence in Litigation potential finger mark.The method that manifests at present vestige has a variety of, is mainly divided into physical method, chemical method and optical means three major types.Wherein physical method comprise that 502 glue are smoked aobvious, significant powder brush, iodine smoked aobvious, physical developer manifests, small-particle suspension manifests, vacuum metal film plating manifests and dyes color method.Chemical method mainly comprises that ninhydrin manifests, DFO manifests and silver nitrate process for show.Optical means has contained reflection, transmission, luminescence generated by light imaging and Raman scattering.The main feature of optical means is to utilize different material to manifest a kind of contactless harmless method manifesting of vestige in the difference of ultraviolet, visible ray and infrared absorption and reflection characteristic.Investigate on the spot at the scene in the optical technology manifesting with latent trace, in order to improve the rate that manifests of latent trace, need to carry out the detection of optics multiband.
Laser technology starts from the reports of people on forensic science magazine such as Menzel in 1977 in the application aspect trace evidence, they are used for argon ion laser to manifest finger mark first.In science and technology concerning criminal matters field, due to the non-destructive of optical means, utilize it to manifest and extract trace evidence to receive much concern in recent years.In prior art, at bluish-green wave band, although the power of laser is continued to increase, but because the absorption bands of laser wavelength and potential sweat liquid can not finely mate, therefore to manifest aspect the primary fluorescence of the biological specimens such as potential sweat liquid effect still undesirable, often need to utilize some special solvents, powder to carry out fluorescence preliminary treatment, but the result of fluorescence processing can be polluted sample.So the integrated optical source that for scene inspection demand is multiple conventional laser wavelengths of master seems particularly important in science and technology concerning criminal matters application.
The open day 2011-12-14 of China Patent Publication No. CN102280807A() record a kind of Medical multi-wavelength laser device, produced the laser of required wavelength by modulator by fundamental frequency light, adopt selective reflecting mirror and total reflective mirror to form resonant cavity, compact conformation.It comprises semiconductor side Nd:YAG laser module, completely reflecting mirror, partially reflecting mirror, 45 ° of speculums, spectroscope, laser frequency multiplier, acousto-optic modulator, liquid optical switch and optical gate compositions.Basic characteristics are: in the time of liquid optical switch and optical gate unlatching, form 1064nm " Z " type laserresonator; Close and optical gate while opening when liquid optical switch, form 532nm Laser output resonant cavity, in the time that optical gate is closed, form 1320nm and 660nm laser wavelength resonant cavity, the laser of output is exported respectively through dichroic mirror.Wherein, liquid optical switch is relative by two right-angle prism inclined-planes and is fixedly connected into the assembly of right-angle prism by intercell connector, reaches thereby change the interchannel medium in inclined-plane the object that regulates light exit direction.Wavelength and the power of multiband laser of describing is respectively 1320nm(90W), 1064nm (212W), 660nm (18W), four wave bands of 532nm (120W), it utilizes liquid optical switch and optical gate to select and adjust wave band.But there is following shortcoming in this medical laser:
1, only have four wave bands, the face of containing is limited;
2, each wave band can only, from output channel output separately, can not be exported in same output channel.Therefore operating process complexity, cannot investigate middle practical application at the scene on the spot.
Summary of the invention
The purpose of this utility model is the deficiency existing for existing multiple-wavelength laser, and a kind of six wavelength evidence at the scene laser detectors that can meet scene inspection application in science and technology concerning criminal matters field that provide have advantages of compact conformation, stable performance and easy and simple to handle.
The technical scheme that the utility model is taked is: six wavelength evidence at the scene laser detectors, be characterized in, and comprising: two groups of laser generation systems and a single Laser output passage; In two groups of laser generation systems, wherein one group of laser generation system comprises one first laser emitting module and is arranged on the long-living one-tenth light path of first wave, second wave length generation light path, the three-wavelength generation light path of described the first laser emitting module outlet side; Another group laser generation system comprises one second laser emitting module and is arranged on the 4th wavelength generation light path of described the second laser emitting module outlet side, the 5th wavelength generation light path, the 6th wavelength generation light path; The laser that the long-living one-tenth light path of described first wave, second wave length generation light path, three-wavelength generation light path, the 4th wavelength generation light path, the 5th wavelength generation light path and the 6th wavelength generation light path are exported is pooled to a single Laser output passage by multiple speculums and exports.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein, the first described laser emitting module is a 980nm semiconductor laser; The second described laser emitting module is a 808nm semiconductor laser.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein,
The first speculum, the second speculum, the 3rd speculum, the 4th speculum, the 5th speculum that the long-living one-tenth optical routing of described first wave arranges in the first laser emitting module outlet side order form, from described single Laser output passage output;
Described second wave length generates 1342nm total reflective mirror, Nd:YVO4 crystal, the anti-mirror of 1342nm part, the first frequency-doubling crystal, the 6th speculum, the 3rd speculum, the 4th speculum, the 5th speculum formation that optical routing arranges in the first laser emitting module outlet side order, from described single Laser output passage output;
Described three-wavelength generates 1342nm total reflective mirror, Nd:YVO4 crystal, the anti-mirror of 1342nm part, the first frequency-doubling crystal, the second frequency-doubling crystal, the 7th speculum, the 4th speculum, the 5th speculum formation that optical routing arranges in the first laser emitting module outlet side order, from described single Laser output passage output;
Described the 4th wavelength generate 1064nm total reflective mirror that optical routing arranges in the second laser emitting module outlet side order, Nd:YAG crystal, the anti-mirror of 1342nm part, first and frequently crystal, the 9th speculum, the 6th speculum, the 3rd speculum, the 4th speculum, the 5th speculum form, from described single Laser output passage output;
Described the 5th wavelength generate 1064nm total reflective mirror that optical routing arranges in the second laser emitting module outlet side order, Nd:YAG crystal, the anti-mirror of 1342nm part, first and frequently crystal, second and frequently crystal, the tenth speculum, the 7th speculum, the 4th speculum, the 5th speculum form, from described single Laser output passage output;
Described the 6th wavelength generate 1064nm total reflective mirror that optical routing arranges in the second laser emitting module outlet side order, Nd:YAG crystal, the anti-mirror of 1342nm part, first and frequently crystal, second and frequently crystal, the 3rd and frequently crystal, the 8th speculum, the 5th speculum form, from described single Laser output passage output.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein, the first described frequency-doubling crystal and the second frequency-doubling crystal are bbo crystal and form; Described first and frequently crystal, second and frequently crystal, the 3rd and frequently crystal be BIBO crystal and form.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein, the first described speculum is 980nm total reflective mirror; The second described speculum is 980nm total reflective mirror; 980nm transmission 532nm, the 671nm speculum of the 3rd described speculum; 980nm, the 671nm of the 4th described speculum, 532nm transmission 335nm, 447.5nm speculum; The 5th described speculum is 980nm, 671nm, 447.5nm, 532nm, 355nm transmission 266nm speculum; The 6th described speculum is 532nm transmission 671nm speculum; The 7th described speculum is 355nm transmission 447.5nm speculum; The 8th described speculum is 266nm speculum; The 9th described speculum is 355nm speculum; The tenth described speculum is 532nm total reflective mirror.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein, the long-living one-tenth light path output of described first wave 980nm wavelength laser; Described second wave length generates light path output 671nm wavelength laser; Described three-wavelength generates light path output 447.5nm wavelength laser; The 4th described wavelength generates light path output 532nm wavelength laser; The 5th described wavelength generates light path output 355nm wavelength laser; The 6th described wavelength generates light path output 266nm wavelength laser.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein, described 980nm wavelength laser is independently exported and is obtained by 980nm laser reflection module, is reflected and is outputed to single Laser output passage output by speculum; Described 671nm wavelength laser produces 1342nm fundamental frequency light by 980nm semiconductor laser, Nd:YVO4 crystal, then by bbo crystal two frequencys multiplication, output obtains 671nm, and 671nm is reflexed to single Laser output passage output by recycling speculum; Described 447.5nm wavelength laser is obtained through crystal bbo crystal two frequencys multiplication by 1342nm and 671nm, and the 447.5nm of generation reflexes to single Laser output passage output through speculum; Described 532nm wavelength laser produces fundamental frequency light 1064nm by 808 diode-end-pumped Nd:YAG crystal, reflexes to single Laser output passage output through nonlinear crystal BIBO bis-frequency multiplication output 532nm through speculum; Described 355nm wavelength laser is obtained through crystal BIBO and frequency by 1064nm and 532nm, reflexes to single Laser output passage output through speculum; Described 266nm wavelength laser by BIBO and acquisition frequently, reflexes to single Laser output passage output through speculum by 532nm.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein, described speculum is dichroscope, is coated with single wavelength film that is all-trans, the reflectivity of corresponding each wavelength is greater than 95%.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein, also comprise that one presses locking tripping-gear for what conveniently insert or extract photoconductive tube, the described locking tripping-gear that presses comprises a touch-pressure switch being made up of main switch arm and support arm, a substrate, a locking member and a spring; Wherein, described main switch arm and described substrate are scissor structural configuration; Described locking member by the projection arranging above the substrate leading portion described with form at the groove coordinating with described projection that is connected described photoconductive tube leading portion bottom setting; The bottom of described spring is arranged on the below of described base plate rear section, and its top is connected with the top of the back segment of described main switch arm.
Above-mentioned six wavelength evidence at the scene laser detectors, wherein, also comprise a wavelength laser o controller, formed by an Infineon frkrsi intelligent chip being connected with the input of described the first laser emitting module and the second laser emitting module and the selector switch that is connected with the control end of this intelligent chip, select to control the output of required wavelength laser.
Because the utility model has adopted above technical scheme, the technique effect of its generation is obvious:
1, the utility model utilizes frequency multiplication and frequency technology by integrated laser wavelength conventional in scene inspection, realizes multiband and surveys, and has met the demand of science and technology concerning criminal matters application;
2, realized and contained main wave band six wavelength that material evidence is surveyed, its spectral line has been contained ultraviolet, visible ray to near-infrared, power output has reached several watts of magnitudes, each wave length laser beams is exported by single Laser output passage, compact conformation, and finely solved the difficult problem that different wave length laser beam cannot accurately irradiate same target area, thereby can realize simply multispectral synchronous imaging;
3, two Laser emission assemblies, by Infineon frkrsi intelligent chip and selective switch control conducting and thermostatic control, have been avoided two Laser emission assembly interference each other;
4, adopt the overall architecture mentality of designing of module recombinant, the convenient lamination number that increases, for expansion design provides manipulable space;
5, adopt and press locking tripping-gear, can insert easily or extract like this photoconductive tube; In the situation that photoconductive tube does not insert, photoconductive tube will not have Laser output to laser beam expanding lens, ensure use safety.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of the utility model six wavelength evidence at the scene laser detectors.
Fig. 2 is that in the utility model six wavelength evidence at the scene laser detectors, 980nm wavelength laser produces structural representation.
Fig. 3 is that in the utility model six wavelength evidence at the scene laser detectors, 671nm wavelength laser produces structural representation.
Fig. 4 is that in the utility model six wavelength evidence at the scene laser detectors, 447.5nm wavelength laser produces structural representation.
Fig. 5 is that in the utility model six wavelength evidence at the scene laser detectors, 532nm wavelength laser produces structural representation.
Fig. 6 is that in the utility model six wavelength evidence at the scene laser detectors, 355nm wavelength laser produces structural representation.
Fig. 7 is that in the utility model six wavelength evidence at the scene laser detectors, 266nm wavelength laser produces structural representation.
Fig. 8 is the structural representation that presses locking tripping-gear in the utility model six wavelength evidence at the scene laser detectors, and wherein a is the use view of photoconductive tube while extracting, and b is the structural representation of photoconductive tube at locking state.
In figure:
1-980nm semiconductor laser module;
2-Nd
:yVO4 crystal;
3-bbo crystal;
4-bbo crystal;
5-808nm semiconductor laser module;
6-Nd
:yAG crystal;
7-BIBO crystal;
8-BIBO crystal;
9-BIBO crystal;
M1-1342nm total reflective mirror;
M2-1342nm partially reflecting mirror;
M3-1064nm total reflective mirror;
M4-1064nm partially reflecting mirror;
A-980nm total reflective mirror;
B-980nm total reflective mirror;
D-980nm transmission 532nm, 671nm speculum;
E-980nm, 671nm, 532nm transmission 335nm, 447.5nm speculum;
F-980nm, 671nm, 447.5nm, 532nm, 355nm transmission 266nm speculum;
G-532nm transmission 671nm speculum;
H-355nm transmission 447.5nm speculum;
I-266nm speculum;
K-355nm speculum;
J-532nm speculum;
10-wavelength laser o controller;
11-press locking tripping-gear;
12-photoconductive tube.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented under taking technical solutions of the utility model as prerequisite; provided detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
Refer to Fig. 1, Fig. 1 is the overall structure schematic diagram of the utility model six wavelength evidence at the scene laser detectors.The utility model six wavelength evidence at the scene laser detectors, comprising: comprising: two groups of laser generation system A, B and a single Laser output channel C.In two groups of laser generation systems, wherein one group of laser generation system A comprises one first laser emitting module 1 and is arranged on the long-living one-tenth light path of first wave, second wave length generation light path, the three-wavelength generation light path of described the first laser emitting module outlet side;
Another group laser generation system B comprises one second laser emitting module 5 and is arranged on the 4th wavelength generation light path of described the second laser emitting module outlet side, the 5th wavelength generation light path, the 6th wavelength generation light path;
The laser that the long-living one-tenth light path of described first wave, second wave length generation light path, three-wavelength generation light path, the 4th wavelength generation light path, the 5th wavelength generation light path and the 6th wavelength generation light path are exported is pooled to a single Laser output channel C by multiple speculums and exports.
In the utility model six wavelength evidence at the scene laser detectors, also comprise a wavelength laser o controller 10, formed by an Infineon frkrsi intelligent chip being connected with the input of described the first laser emitting module and the second laser emitting module and the selector switch that is connected with the control end of this intelligent chip, select to control the output of required wavelength laser.The operation state of the each laser module of this Infineon frkrsi intelligent chip tunable management and control is also closed unnecessary power termination timely and effectively, guarantees low-power consumption.If needed, this intelligent chip also can display the condition information of whole system operation by display screen.And in use, if operation is exited or power-off, intelligent chip also can be remembered all Output of laser luminous intensity numerical value that operator sets the last time, and reproduces in the time that operate next time.
In the present embodiment, the first described laser emitting module is a 980nm semiconductor laser; The second described laser emitting module is a 808nm semiconductor laser.
Refer to Fig. 2, Fig. 2 is that in the utility model six wavelength evidence at the scene laser detectors, 980nm wavelength laser produces structural representation.The first speculum a, the second speculum b, the 3rd speculum d, the 4th speculum e, the 5th speculum f that the long-living one-tenth optical routing of described first wave arranges in the first laser emitting module 1 outlet side order form.Directly export 980nm wavelength laser by this laser emitting module, reflex to described single Laser output passage output through speculum;
Refer to Fig. 3, Fig. 3 is that in the utility model six wavelength evidence at the scene laser detectors, 671nm wavelength laser produces structural representation.Described second wave length generates the anti-mirror M2 of 1342nm total reflective mirror M1, Nd:YVO4 crystal 2,1342nm part, the first frequency-doubling crystal 3, the 6th speculum g, the 3rd speculum d, the 4th speculum e, the 5th speculum f formation that optical routing arranges in the first laser emitting module 1 outlet side order.Produce 1342nm fundamental frequency light by 980nm semiconductor laser, Nd:YVO4 crystal, then by bbo crystal two frequencys multiplication, output obtains 671nm wavelength laser, reflex to described single Laser output passage output through speculum.
Refer to Fig. 4, Fig. 4 is that in the utility model six wavelength evidence at the scene laser detectors, 447.5nm wavelength laser produces structural representation.Described three-wavelength generates the anti-mirror M2 of 1342nm total reflective mirror M1, Nd:YVO4 crystal 2,1342nm part, the first frequency-doubling crystal 3, the second frequency-doubling crystal 4, the 7th speculum h, the 4th speculum e, the 5th speculum f formation that optical routing arranges in the first laser emitting module 1 outlet side order.Obtain 447.5nm wavelength laser by 1342nm and 671nm through crystal bbo crystal two frequencys multiplication, export from described single Laser output passage through speculum.
Refer to Fig. 5, Fig. 5 is that in the utility model six wavelength evidence at the scene laser detectors, 532nm wavelength laser produces structural representation.Described the 4th wavelength generates the anti-mirror M4 of 1064nm total reflective mirror M3, Nd:YAG crystal 6,1342nm part that optical routing arranges in the outlet side order of the second laser emitting module 5, first and crystal 7, the 9th speculum j, the 6th speculum g, the 3rd speculum d, the 4th speculum e, the 5th speculum f form frequently.Produce fundamental frequency light 1064nm by 808 diode-end-pumped Nd:YAG crystal, obtain 532nm wavelength laser through nonlinear crystal BIBO bis-frequencys multiplication, reflex to single Laser output passage output through speculum;
Refer to Fig. 6, Fig. 6 is that in the utility model six wavelength evidence at the scene laser detectors, 355nm wavelength laser produces structural representation.Described the 5th wavelength generates the anti-mirror M4 of 1064nm total reflective mirror M3, Nd:YAG crystal 6,1342nm part that optical routing arranges in the outlet side order of the second laser emitting module 5, first and crystal 7, second and crystal 8, the tenth speculum k, the 7th speculum h, the 4th speculum e, the 5th speculum f form frequently frequently.Obtain 355nm wavelength laser by 1064nm and 532nm through crystal BIBO and frequency, reflex to single Laser output passage output through speculum;
Refer to Fig. 7, Fig. 7 is that in the utility model six wavelength evidence at the scene laser detectors, 266nm wavelength laser produces structural representation.Described the 6th wavelength generates the anti-mirror M4 of 1064nm total reflective mirror M3, Nd:YAG crystal 6,1342nm part that optical routing arranges in the outlet side order of the second laser emitting module 5, first and crystal 7, second and crystal 8, the 3rd and crystal 9, the 8th speculum i, the 5th speculum f form frequently frequently frequently.Output 266nm wavelength laser, from described single Laser output passage output.Described obtains 266nm wavelength laser by 532nm wavelength laser by BIBO and frequency, reflexes to single Laser output passage output through speculum.
In the present embodiment, the first described frequency-doubling crystal and the second frequency-doubling crystal are bbo crystal and form; Described first and frequently crystal, second and frequently crystal, the 3rd and frequently crystal be BIBO crystal and form.The first described speculum is 980nm total reflective mirror; The second described speculum is 980nm total reflective mirror; 980nm transmission 532nm, the 671nm speculum of the 3rd described speculum; 980nm, the 671nm of the 4th described speculum, 532nm transmission 335nm, 447.5nm speculum; The 5th described speculum is 980nm, 671nm, 447.5nm, 532nm, 355nm transmission 266nm speculum; The 6th described speculum is 532nm transmission 671nm speculum; The 7th described speculum is 355nm transmission 447.5nm speculum; The 8th described speculum is 266nm speculum; The 9th described speculum is 355nm speculum; The tenth described speculum is 532nm total reflective mirror.Described speculum is dichroscope, is coated with single wavelength film that is all-trans, and the reflectivity of corresponding each wavelength is greater than 95%.
For the safety that ensures to use, in the utility model six wavelength evidence at the scene laser detectors, also comprise that one locks tripping-gear 11 for conveniently inserting or extract pressing of photoconductive tube, refer to Fig. 8, Fig. 8 is the structural representation that presses locking tripping-gear in the utility model six wavelength evidence at the scene laser detectors, wherein a is the use view of photoconductive tube while extracting, and b is the structural representation of photoconductive tube at locking state.The described locking tripping-gear 11 that presses comprises a touch-pressure switch being made up of main switch arm 1111 and support arm 1,112 111, a substrate 112, a locking member 113 and a spring 114; Wherein, described main switch arm 1111 is scissor structural configuration with described substrate 112; Described locking member 113 is made up of with being connected the groove 1132 coordinating with described projection that described photoconductive tube 12 leading portions bottoms arrange the projection 1131 arranging above the substrate leading portion described; The bottom of described spring 114 is arranged on the below of described base plate rear section, and its top is connected with the top of the back segment of described main switch arm.When use, press the main switch arm of touch-pressure switch, it is large that the front opening of this main switch arm becomes, the front photoconductive tube 12 that pushes away, and the groove of photoconductive tube leading portion bottom buckles in the projection of substrate leading portion, is connected and fixed with substrate; The rear end of this main switch arm contacts with support arm simultaneously, switch closure, Output of laser signal.This press locking tripping-gear in the structure of locking state as shown in the b of Fig. 8.When shut-down operation, eject switch 111, spring reset, departs from support arm by the back segment of main switch arm, and main switch arm rotates along fulcrum 1110, and switch disconnects, and extracts photoconductive tube simultaneously, and photoconductive tube will not have Laser output.This presses locking tripping-gear can insert or extract photoconductive tube easily; In the situation that photoconductive tube does not insert, will not have Laser output, ensure use safety.
The utility model six wavelength evidence at the scene laser detectors in use, first select required optical maser wavelength button at control panel according to field condition, insert again photoconductive tube, open the touch-pressure switch that presses locking tripping-gear, then switch on power, under the control of controller, photoconductive tube Output of laser, may there is the on-the-spot region of evidence at the scene in irradiation, survey.Because multiple wavelength can be distinguished single output in same output channel, therefore operation is very simple, and Effect on Detecting is good.
The utility model passes through integrated laser wavelength conventional in scene inspection output, realizing multiband surveys, can meet to greatest extent in science and technology concerning criminal matters the demand of different vestige different wave length searchlighting in scene inspection process, in a device, realize manifesting and extracting of multiple material evidence.There is compact conformation, stable performance, easy to operate, conversion efficiency advantages of higher.
Claims (10)
1. six wavelength evidence at the scene laser detectors, is characterized in that, comprising: two groups of laser generation systems and a single Laser output passage;
In two groups of laser generation systems,
Wherein one group of laser generation system comprises one first laser emitting module and is arranged on the long-living one-tenth light path of first wave, second wave length generation light path, the three-wavelength generation light path of described the first laser emitting module outlet side;
Another group laser generation system comprises one second laser emitting module and is arranged on the 4th wavelength generation light path of described the second laser emitting module outlet side, the 5th wavelength generation light path, the 6th wavelength generation light path;
The laser that the long-living one-tenth light path of described first wave, second wave length generation light path, three-wavelength generation light path, the 4th wavelength generation light path, the 5th wavelength generation light path and the 6th wavelength generation light path are exported is pooled to a single Laser output passage by multiple speculums and exports.
2. six wavelength evidence at the scene laser detectors according to claim 1, is characterized in that, the first described laser emitting module is a 980nm semiconductor laser; The second described laser emitting module is a 808nm semiconductor laser.
3. six wavelength evidence at the scene laser detectors according to claim 1 and 2, is characterized in that,
The first speculum, the second speculum, the 3rd speculum, the 4th speculum, the 5th speculum that the long-living one-tenth optical routing of described first wave arranges in the first laser emitting module outlet side order form, from described single Laser output passage output;
Described second wave length generates 1342nm total reflective mirror, Nd:YVO4 crystal, the anti-mirror of 1342nm part, the first frequency-doubling crystal, the 6th speculum, the 3rd speculum, the 4th speculum, the 5th speculum formation that optical routing arranges in the first laser emitting module outlet side order, from described single Laser output passage output;
Described three-wavelength generates 1342nm total reflective mirror, Nd:YVO4 crystal, the anti-mirror of 1342nm part, the first frequency-doubling crystal, the second frequency-doubling crystal, the 7th speculum, the 4th speculum, the 5th speculum formation that optical routing arranges in the first laser emitting module outlet side order, from described single Laser output passage output;
Described the 4th wavelength generate 1064nm total reflective mirror that optical routing arranges in the second laser emitting module outlet side order, Nd:YAG crystal, the anti-mirror of 1342nm part, first and frequently crystal, the 9th speculum, the 6th speculum, the 3rd speculum, the 4th speculum, the 5th speculum form, from described single Laser output passage output;
Described the 5th wavelength generate 1064nm total reflective mirror that optical routing arranges in the second laser emitting module outlet side order, Nd:YAG crystal, the anti-mirror of 1342nm part, first and frequently crystal, second and frequently crystal, the tenth speculum, the 7th speculum, the 4th speculum, the 5th speculum form, from described single Laser output passage output;
Described the 6th wavelength generate 1064nm total reflective mirror that optical routing arranges in the second laser emitting module outlet side order, Nd:YAG crystal, the anti-mirror of 1342nm part, first and frequently crystal, second and frequently crystal, the 3rd and frequently crystal, the 8th speculum, the 5th speculum form, from described single Laser output passage output.
4. six wavelength evidence at the scene laser detectors according to claim 3, is characterized in that, the first described frequency-doubling crystal and the second frequency-doubling crystal are bbo crystal and form; Described first and frequently crystal, second and frequently crystal, the 3rd and frequently crystal be BIBO crystal and form.
5. six wavelength evidence at the scene laser detectors according to claim 3, is characterized in that,
The first described speculum is 980nm total reflective mirror;
The second described speculum is 980nm total reflective mirror;
980nm transmission 532nm, the 671nm speculum of the 3rd described speculum;
980nm, the 671nm of the 4th described speculum, 532nm transmission 335nm, 447.5nm speculum;
The 5th described speculum is 980nm, 671nm, 447.5nm, 532nm, 355nm transmission 266nm speculum;
The 6th described speculum is 532nm transmission 671nm speculum;
The 7th described speculum is 355nm transmission 447.5nm speculum;
The 8th described speculum is 266nm speculum;
The 9th described speculum is 355nm speculum;
The tenth described speculum is 532nm total reflective mirror.
6. six wavelength evidence at the scene laser detectors according to claim 3, is characterized in that,
The long-living one-tenth light path output of described first wave 980nm wavelength laser;
Described second wave length generates light path output 671nm wavelength laser;
Described three-wavelength generates light path output 447.5nm wavelength laser;
The 4th described wavelength generates light path output 532nm wavelength laser;
The 5th described wavelength generates light path output 355nm wavelength laser;
The 6th described wavelength generates light path output 266nm wavelength laser.
7. six wavelength evidence at the scene laser detectors according to claim 6, is characterized in that,
Described 980nm wavelength laser is independently exported and is obtained by 980nm laser reflection module, is reflected and is outputed to single Laser output passage output by speculum;
Described 671nm wavelength laser produces 1342nm fundamental frequency light by 980nm semiconductor laser, Nd:YVO4 crystal, then by bbo crystal two frequencys multiplication, output obtains 671nm, and 671nm is reflexed to single Laser output passage output by recycling speculum;
Described 447.5nm wavelength laser is obtained through crystal bbo crystal two frequencys multiplication by 1342nm and 671nm, and the 447.5nm of generation reflexes to single Laser output passage output through speculum;
Described 532nm wavelength laser produces fundamental frequency light 1064nm by 808 semiconductor laser pumps, Pu Nd:YAG crystal, reflexes to single Laser output passage output through nonlinear crystal BIBO bis-frequency multiplication output 532nm through speculum;
Described 355nm wavelength laser is obtained through crystal BIBO and frequency by 1064nm and 532nm, reflexes to single Laser output passage output through speculum;
Described 266nm wavelength laser by BIBO and acquisition frequently, reflexes to single Laser output passage output through speculum by 532nm.
8. according to six wavelength evidence at the scene laser detectors described in claim 1,5 or 7 any one, it is characterized in that, described speculum is dichroscope, is coated with single wavelength film that is all-trans, and the reflectivity of corresponding each wavelength is greater than 95%.
9. six wavelength evidence at the scene laser detectors according to claim 1, it is characterized in that, also comprise that one presses locking tripping-gear for what conveniently insert or extract photoconductive tube, the described locking tripping-gear that presses comprises a touch-pressure switch being made up of main switch arm and support arm, a substrate, a locking member and a spring; Wherein, described main switch arm and described substrate are scissor structural configuration; Described locking member by the projection arranging above the substrate leading portion described with form at the groove coordinating with described projection that is connected described photoconductive tube leading portion bottom setting; The bottom of described spring is arranged on the below of described base plate rear section, and its top is connected with the top of the back segment of described main switch arm.
10. six wavelength evidence at the scene laser detectors according to claim 1, it is characterized in that, also comprise a wavelength laser o controller, formed by an Infineon frkrsi intelligent chip being connected with the input of described the first laser emitting module and the second laser emitting module and the selector switch that is connected with the control end of this intelligent chip, select to control the output of required wavelength laser.
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| CN201420267352.9U CN203967509U (en) | 2014-05-23 | 2014-05-23 | Six wavelength evidence at the scene laser detectors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098599A (en) * | 2014-05-23 | 2015-11-25 | 上海市刑事科学技术研究院 | Six-wavelength on-site physical evidence laser detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098599A (en) * | 2014-05-23 | 2015-11-25 | 上海市刑事科学技术研究院 | Six-wavelength on-site physical evidence laser detector |
| CN105098599B (en) * | 2014-05-23 | 2018-12-07 | 上海市刑事科学技术研究院 | Six wavelength evidence at the scene laser detectors |
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Granted publication date: 20141126 Effective date of abandoning: 20181207 |