CN104905797A

CN104905797A - Portable laser physical evidence searching instrument

Info

Publication number: CN104905797A
Application number: CN201510232997.8A
Authority: CN
Inventors: 王斌; 曾文
Original assignee: Guangzhou Wave Science And Technology Development Co Ltd
Current assignee: Guangzhou Wave Science And Technology Development Co Ltd
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2015-09-16

Abstract

The invention discloses a portable laser physical evidence searching instrument. The instrument comprises an optical glass imaging system coaxially arranged, a heat dissipation system, a laser head, a control circuit and a battery housing, wherein the control circuit is connected with a cooling fan and the laser head, and a lens of the optical glass imaging system is plated with a photosensory membrane. Due to the adoption of the optical lens plated with the photosensory membrane, light transmittance is higher, light outlet uniformity is over 90%, clear uniform light free of visual interference is provided when trace physical evidence is found, and the instrument is widely applied to track reconnaissance and target search and can also be directly used for photography, evidence obtaining, recording and illuminating. Meanwhile, spiral cooling fins are adopted for the heat dissipation system, the interior of each spiral cooling fin is designed to be a through hole so that air can flow on the cooling fins automatically in a circulating mode, it is guaranteed that the largest cooling area is obtained in the smallest space, and then sufficient circulating heat dissipation of a main laser device is ensured. The portable laser physical evidence searching instrument can be widely applied to the field of photoelectric instruments.

Description

The search of portable laser material evidence finds instrument

Technical field

The present invention relates to photoelectric instrument field, especially the search of portable laser material evidence finds instrument.

Background technology

Material evidence search finds that instrument is the visual plant of public security organs, procuratorial organs and people's court, Si Deng department search site, discovery material evidence vestige, laser physical evidence exploration instrument is using laser as excitation source, utilize the high and monochromaticity of the brightness of laser to wait the luminescence of characteristic Induced trace evidence well, be specially adapted to the nondestructive testing of the public security various material evidence search in scene and fingerprint.The various biological vestige of nondestructive testing, the search as the biological material such as seminal stain, vaginal secretions, saliva, bloodstain, urine mark, skeleton tooth fragment of spot finds; The harmless impression of the hand fingerprint directly manifested on part object, as the semipermeability object fingerprint surface such as body of wall, packing box of spot, vestige of keeping the seal harmless search and manifest; Nondestructive testing manifests through indenes diketone, 1,2,3-indantrione monohydrate or 502 glue etc. or the smoked aobvious sweat fingerprint etc. processed manifests, and fluorescent powder brush shows fingerprint manifestation; Congestion, bite mark after inspection personal injury; Check gunslinging or the inspection of explosive residue, the search discovery etc. of the materials such as on-the-spot suspicious fiber.

Instrument is found for existing laser physical evidence search, when its shortcoming is to find trace evidence, cause definition not high because intensity of illumination is uneven, next is that the volume of instrument is large, weight is large, mainly because the caloric value of laser instrument own is high, the high temperature that long working produces can have influence on the stability of instrument itself, therefore, reconnoitre heat sinking function considered by instrument importance when designing, the fuselage cover structure of general employing large space increases thermal diffusivity, the exploration instrument device volume weight designed like this is large, is inconvenient to carry, is not easy to onsite application.

Summary of the invention

In order to solve the problems of the technologies described above, the object of the invention is: provide the portable laser material evidence search that a kind of smooth uniformity is higher, heat dispersion strong, volume is less to find instrument.

The technical solution adopted in the present invention is: the search of portable laser material evidence finds instrument, include the optical glass imaging system, cooling system, laser head, control circuit and the battery sleeve that arrange vertically, described control circuit is connected with radiator fan and laser head respectively, and the eyeglass of described optical glass imaging system is coated with light-sensitive surface.

Further, described optical glass imaging system includes the concave and convex lenses, planoconvex lens, the even light microscopic of cylinder and the collimation focusing mirror that set gradually, and the eyeglass in described optical glass imaging system all adopts quartz glass to make.

Further, described cooling system includes radiator fan and fin, and described fin contacts with laser head, and described fin is spiral fin.

Further, described spiral fin is provided with through hole.

Further, described optical glass imaging system front end is also provided with protective lens, is also provided with protective glass pressure ring between described protective lens and optical glass imaging system.

Further, be also disposed with small sphere of exterior rearview mirror pressure ring and adapter between described cooling system and laser head, described planoconvex lens is arranged in adapter.

Further, also include laser head mount pad, PCB mount pad, spring and battery terminal contact head, described laser head is arranged at laser head mount pad, and described control circuit is arranged at PCB mount pad, and described spring and battery terminal contact head are arranged between PCB mount pad and battery sleeve.

Further, the even light microscopic of described cylinder and collimation focusing mirror are installed between adapter and laser mount pad.

Further, also include containment vessel, described containment vessel includes the drive end bearing bracket, fore shell, secondary mesochite and the mesochite that connect successively, and described mesochite is connected with battery sleeve, and described battery sleeve also includes tail-hood; Described fore shell, secondary mesochite, mesochite and battery sleeve are threaded connection.

Further, described concave and convex lenses are arranged in fore shell.

The invention has the beneficial effects as follows: the present invention adopts the optical lens adding plating light-sensitive surface, use light transmittance higher, outgoing light homogeneity is more than 90%, when finding trace evidence, the clear even light efficiency without vision interference is provided, be widely used in the search of vestige exploration targets, and the illumination of photography evidence obtaining record can be directly used in; Meanwhile, cooling system of the present invention adopts spiral fin, and spiral heat dissipation sheet inside adopts through-hole type design, allows air-flow automatically circulate on a heat sink, ensures to accomplish the maximum area of dissipation of minimum space, to guarantee the abundant circulation cooling of laser instrument main frame.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of apparatus of the present invention;

Fig. 2 is the concrete structure schematic diagram of the embodiment of the present invention;

Fig. 3 is optical glass imaging system subssembly drawing of the present invention;

Fig. 4 is the concrete structure schematic diagram of fin of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:

With reference to Fig. 1, the search of portable laser material evidence finds instrument, include the optical glass imaging system, cooling system, laser head, control circuit and the battery sleeve that arrange vertically, described control circuit is connected with radiator fan and laser head respectively, and the eyeglass of described optical glass imaging system is coated with light-sensitive surface.

With reference to Fig. 3, be further used as preferred embodiment, described optical glass imaging system includes the concave and convex lenses, planoconvex lens, the even light microscopic of cylinder and the collimation focusing mirror that set gradually, and the eyeglass in described optical glass imaging system all adopts quartz glass to make.

With reference to Fig. 4, be further used as preferred embodiment, described cooling system includes radiator fan and fin, and described fin contacts with laser head, and described fin is spiral fin.

With reference to Fig. 4, be further used as preferred embodiment, described spiral fin be provided with through hole, through hole be provided with the air circulation be beneficial between flight, realize high efficiency and heat radiation.

With reference to Fig. 2, be further used as preferred embodiment, described optical glass imaging system front end is also provided with protective lens, is also provided with protective glass pressure ring between described protective lens and optical glass imaging system.

With reference to Fig. 2, be further used as preferred embodiment, be also disposed with small sphere of exterior rearview mirror pressure ring and adapter between described cooling system and laser head, described planoconvex lens is arranged in adapter.

With reference to Fig. 2, be further used as preferred embodiment, also include laser head mount pad, PCB mount pad, spring and battery terminal contact head, described laser head is arranged at laser head mount pad, described control circuit is arranged at PCB mount pad, and described spring and battery terminal contact head are arranged between PCB mount pad and battery sleeve.

Be further used as preferred embodiment, the even light microscopic of described cylinder and collimation focusing mirror are installed between adapter and laser mount pad.

With reference to Fig. 2, be further used as preferred embodiment, also include containment vessel, described containment vessel includes the drive end bearing bracket, fore shell, secondary mesochite and the mesochite that connect successively, and described mesochite is connected with battery sleeve, and described battery sleeve also includes tail-hood; Described fore shell, secondary mesochite, mesochite and battery sleeve are threaded connection.

With reference to Fig. 2, be further used as preferred embodiment, described concave and convex lenses are arranged in fore shell.

More than that better enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art can also make all equivalents or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.

Claims

1. the search of portable laser material evidence finds instrument, it is characterized in that: include the optical glass imaging system, cooling system, laser head, control circuit and the battery sleeve that arrange vertically, described control circuit is connected with radiator fan and laser head respectively, and the eyeglass of described optical glass imaging system is coated with light-sensitive surface.

2. portable laser material evidence search according to claim 1 finds instrument, it is characterized in that: described optical glass imaging system includes the concave and convex lenses, planoconvex lens, the even light microscopic of cylinder and the collimation focusing mirror that set gradually, and the eyeglass in described optical glass imaging system all adopts quartz glass to make.

3. portable laser material evidence search according to claim 1 finds instrument, and it is characterized in that: described cooling system includes radiator fan and fin, described fin contacts with laser head, and described fin is spiral fin.

4. portable laser material evidence search according to claim 3 finds instrument, it is characterized in that: described spiral fin is provided with through hole.

5. portable laser material evidence search according to claim 1 finds instrument, it is characterized in that: described optical glass imaging system front end is also provided with protective lens, is also provided with protective glass pressure ring between described protective lens and optical glass imaging system.

6. portable laser material evidence search according to claim 2 finds instrument, and it is characterized in that: be also disposed with small sphere of exterior rearview mirror pressure ring and adapter between described cooling system and laser head, described planoconvex lens is arranged in adapter.

7. portable laser material evidence search according to claim 6 finds instrument, it is characterized in that: also include laser head mount pad, PCB mount pad, spring and battery terminal contact head, described laser head is arranged at laser head mount pad, described control circuit is arranged at PCB mount pad, and described spring and battery terminal contact head are arranged between PCB mount pad and battery sleeve.

8. portable laser material evidence search according to claim 7 finds instrument, it is characterized in that: the even light microscopic of described cylinder and collimation focusing mirror are installed between adapter and laser mount pad.

9. portable laser material evidence search according to claim 2 finds instrument, it is characterized in that: also include containment vessel, described containment vessel includes the drive end bearing bracket, fore shell, secondary mesochite and the mesochite that connect successively, and described mesochite is connected with battery sleeve, and described battery sleeve also includes tail-hood; Described fore shell, secondary mesochite, mesochite and battery sleeve are threaded connection.

10. portable laser material evidence search according to claim 9 finds instrument, it is characterized in that: described concave and convex lenses are arranged in fore shell.