CN202166778U

CN202166778U - A photomicrographic device for evidences at the scene

Info

Publication number: CN202166778U
Application number: CN2011201964792U
Authority: CN
Inventors: 徐宝桢; 陈连康; 蔡能斌; 周中海
Original assignee: Evidence Identification Center Of Shanghai Public Security Bureau; SHANGHAI HENGGUANG POLICE EQUIPMENT CO Ltd
Current assignee: Evidence Identification Center Of Shanghai Public Security Bureau; SHANGHAI HENGGUANG POLICE EQUIPMENT CO Ltd
Priority date: 2011-06-13
Filing date: 2011-06-13
Publication date: 2012-03-14
Anticipated expiration: 2021-06-13

Abstract

The utility model discloses a photomicrographic device for evidences at the scene and belongs to photographic devices. In the prior art, components of a photomicrographic device for evidences are fragmented and a plurality of persons are needed for operation. The utility model solves the problem of inconvenient usage in the prior art. In the utility model, a camera is a digital single lens reflex camera. A lens of a camera lens is a microscope lens. A light source device is arranged in a front end of the camera lens of the microscope lens. The light source device is composed of an LED light source group and a lamp cover for installing the LED light source group. Power of the light source group is supplied by a battery group. The photomicrographic device has characteristics of high resolution and high magnifying power in photomicrography of the evidences at the scene. The LED light source group provides high light source needed in photographing. The monochromaticity is strong and no shadow appears, thereby making the evidence obtaining more objective. The photomicrographic device integrates the functions of the camera, a microscope, and the light source device into a whole, thereby realizing the aim of simple and convenient using, quick recording and convenient carrying. By using the photomicrographic device for the evidences at the scene in the utility model, the working efficiency and evidence obtaining quality of the evidence photomicrography at the scene are improved substantially. And the photomicrographic device for the evidences at the scene in the utility model is especially suitable for the evidence photomicrography at criminal scene.

Description

The evidence at the scene photomicrographic device

Technical field

The utility model relates to a kind of photograph instrument, refers in particular to a kind of to the recording evidence at the scene photomicrographic device of the micro-evidence obtaining of evidence at the scene.

Background technology

The evidence at the scene photomicrographic device is can't observed micro-vestige and the material evidence visual plant taking pictures, show, extract to some naked eyes of spot, is the equipment that needs that foundation is provided for solving a case, deciding on a verdict.

Existing microphotographi apparatus is before the material evidence camera, to add microscope in addition, and the microscope volume in this structure is big, quality heavy,, carry, use inconvenience.In addition, existing microphotographi apparatus needs external light source normally to take pictures mostly, and microscope, the record CCD.Light-source system all is discrete device; Integrated level is not high, needs many people compounding practice, uses extremely inconvenient; Can't satisfy needs fast recording also to write down convenience, the portable band of demanding party, need the requirement of high light light source in the on-the-spot photomicrograph work, thereby has influenced the efficient and the quality of evidence obtaining record.

Summary of the invention

The purpose of the utility model is in order to overcome the problem that prior art exists, and a kind of evidence at the scene photomicrographic device that can the fast recording displaing micro picture is provided, and this photoinstrumentation integrates camera, microscope, light source, controls simple and easyly, is easy to carry.

The purpose of the utility model realizes through following technical scheme:

A kind of evidence at the scene photomicrographic device comprises: camera is digital slr camera; Camera lens, by lens barrel and place the inner micro-eyeglass of lens barrel to form, the lens barrel rear end is connected with the camera lens connector of camera, and the lens barrel front end is provided with external thread, and lens barrel is provided with the manual focus system that is connected with micro-eyeglass; Said micro-eyeglass is made up of at least 2 convex lens, and every convex lens are fixed in the picture frame; The light source device comprises: lampshade, and it has with the annulus of the internal thread of lens barrel front end external thread bolt connection and the double-layer circular ring cover that is fixed on the annulus periphery by one and forms, and annulus is screwed onto on the camera lens, and the front end internal layer of said double-layer circular ring cover is tubaeform cover; The led light source group is composed in parallel by several LED, evenly is installed on the wall of said tubaeform cover; Electric battery is composed in parallel by 2 lithium batteries at least, and it is inner to be installed in the double-layer circular ring cover, and it is electrically connected with said led light source group through power switch, and said power switch is installed on the double-layer circular ring cover outer wall face.

The syndeton of said manual focus system is: the focusing ring in the focusing system is located at the lens barrel outside surface; The outside surface of each picture frame is provided with external thread; And the external thread pitch of each picture frame has difference; Each picture frame is connected with focusing ring through the screw mandrel in the manual focus system, leaves micro-eyeglass one distance at the lens barrel inwall respectively in the front and back position of micro-eyeglass and is provided with several positioning convex.

The supply voltage of said electric battery is 3V-3.7V, and electric current is 0.27A-0.33A.

A charger socket that is connected respectively with the both positive and negative polarity of electric battery also is installed on the said double-layer circular ring cover outer wall face.

The beneficial effect of the utility model: this photoinstrumentation has high resolving power to evidence at the scene, the micrographic characteristics of high magnification, and the high light light source of photograph usefulness adopts the led light source group, and monochromaticity is strong, and shadow-free makes evidence obtaining more objective.In addition; This photoinstrumentation assembles one with camera, microscope, registering instrument, light source; Can reach and use simple and easy, fast recording and portable purpose; Use this photoinstrumentation greatly to improve on-the-spot micrographic work efficiency and evidence obtaining quality, be specially adapted to the micro-evidence obtaining of criminal scene and take a picture.

Be above-mentioned purpose, characteristic and the effect that further specifies the utility model, below will combine accompanying drawing that the utility model is elaborated.

Description of drawings

Fig. 1 is the structural representation of the utility model evidence at the scene photomicrographic device;

The structural representation that Fig. 2 looks for the light source device right side among Fig. 1.

Embodiment

Be elaborated below in conjunction with the accompanying drawing of embodiment embodiment to the utility model.

Referring to Fig. 1, Fig. 1 is the structural representation of the utility model evidence at the scene photomicrographic device, and is as shown in the figure, and the structure of this photoinstrumentation is following:

Camera 1 adopts digital slr camera, and digital slr camera integrates multi-spectral camera, collection, storage, image processing function; This camera is the CMOS structure, and resolution is 1,800 ten thousand, is higher than 3,000,000 pixels of common CCD camera far away; Its structure is a prior art, does not specify at this.

Camera lens 2, camera lens 2 is by lens barrel 21 and place lens barrel 21 inner micro-eyeglasses 22 to form.Lens barrel 21 rear ends are connected with the camera lens connector of camera 1, and lens barrel 21 front ends are provided with external thread, and lens barrel 21 is provided with the manual focus system (this is a prior art) that is connected with micro-eyeglass 22.Said micro-eyeglass 22 is made up of at least 2 convex lens 221; Every convex lens 221 are fixed in the picture frame 222, and the syndeton of manual focus system is in the present embodiment: the focusing ring 211 in the focusing system is located at lens barrel 21 outside surfaces, and the outside surface of each picture frame 222 is provided with external thread 2221; And the external thread pitch of each picture frame 222 has minute differences; Each picture frame 222 is connected with focusing ring 211 on the camera lens 21 through the screw mandrel 23 in the manual focus system, owing to the external thread pitch of each picture frame 222 has minute differences, when making rotation focusing ring 211; Camera lens 21 inner screw mandrels 23 rotate; Drive picture frame 222, make the relative position between the eyeglass that the trace variation take place, thereby change the camera lens focus.Leave micro-eyeglass 22 1 slight distance places at lens barrel 21 inwalls respectively in the front and back position of micro-eyeglass 22 and be provided with several positioning convex 212, screw mandrel 23 is adjusted the telescope to one's eyes finely tune (positioning convex 212 can be provided with) in the position of sheet 22 between the positioning convex 212 of front and back after micro-eyeglass 22 is installed in lens barrel 21 inside again.The length of above-mentioned lens barrel 21 is 20cm at least, external diameter at least 5 cm, and lens barrel 21 is formed a high enlargement ratio microlens (equivalent enlargement ratio is 1 times-10 times) with eyeglass 22.

Light source device 3; Comprise: lampshade 31, it has with the annulus 311 of the internal thread of lens barrel 21 front end external thread bolt connections and the double-layer circular ring cover that is fixed on the annulus periphery by one and forms, and annulus 311 is screwed onto on the camera lens 21; Referring to Fig. 1-Fig. 2, the front end internal layer of double-layer circular ring cover is tubaeform cover 312 simultaneously; Led light source group 32 is composed in parallel by several LED, evenly is installed on the wall of said tubaeform cover 312; Electric battery 33 is composed in parallel by 2 lithium batteries at least, and supply voltage is 3V-3.7V; Electric current is 0.27A-0.33A; It is inner to be installed in the double-layer circular ring cover, and it is electrically connected with said led light source group 32 through power switch 34, to each LED power supply is provided; Said power switch 34 is installed on the double-layer circular ring cover outer wall face, is convenient to control.A charger socket 35 that is connected respectively with the both positive and negative polarity of electric battery 33 also is installed on double-layer circular ring cover outer wall face, electric battery 33 is charged with convenient.

This photoinstrumentation has high resolving power (for more than 5 times of common CCD) to evidence at the scene; The micrographic characteristics of high magnification (1-10 doubly); In addition, the high light light source of photograph usefulness adopts led light source group (it is strong that the LED high light has monochromaticity, and evidence obtaining is advantage more objectively).In addition, this photoinstrumentation assembles one with camera, microscope, light source, and owing to have accurate structure; The annular LED light source of fixed angle does not have the shadow polishing, and therefore, it is simple and easy to reach use; But the Real Time Observation photographic images can reach the purpose that no shadow is observed the material evidence all angles.This device dispense with outer connecting power can use built-in power to work alone, and the back image of taking pictures is kept at and stores in the card, conveniently reads.

Those of ordinary skill in the art will be appreciated that; Above embodiment only is the purpose that is used for explaining the utility model; And be not with the qualification of doing the utility model; As long as in the essential scope of the utility model, in the scope to the variation of the above embodiment, claim that modification all will drop on the utility model.

Claims

1. evidence at the scene photomicrographic device is characterized in that comprising:

Camera (1) is digital slr camera;

Camera lens (2); By lens barrel (21) and place the inner micro-eyeglass (22) of lens barrel (21) to form; Lens barrel (21) rear end is connected with the camera lens connector of camera (1); Lens barrel (21) front end is provided with external thread, and lens barrel (21) is provided with the manual focus system that is connected with micro-eyeglass (22); Said micro-eyeglass (22) is made up of at least 2 convex lens (221), and every convex lens (221) are fixed in the picture frame (222);

Light source device (3); Comprise: lampshade (31); It has with the annulus (311) of the internal thread of lens barrel (21) front end external thread bolt connection and the double-layer circular ring cover that is fixed on the annulus periphery by one and forms; Annulus (311) is screwed onto on the camera lens (21), and the front end internal layer of said double-layer circular ring cover is tubaeform cover (312); Led light source group (32) is composed in parallel by several LED, evenly is installed on the wall of said tubaeform cover (312); Electric battery (33) is composed in parallel by 2 lithium batteries at least, and it is inner to be installed in the double-layer circular ring cover, and it is electrically connected with said led light source group (32) through power switch (34), and said power switch (34) is installed on the double-layer circular ring cover outer wall face.

2. evidence at the scene photomicrographic device as claimed in claim 1 is characterized in that:

The syndeton of said manual focus system is: the focusing ring in the focusing system (211) is located at lens barrel (21) outside surface; The outside surface of each picture frame (222) is provided with external thread (2221); And the external thread pitch of each picture frame has difference; Each picture frame is connected with focusing ring (211) through the screw mandrel (23) in the manual focus system, leaves micro-eyeglass (22) one distance at lens barrel (21) inwall respectively in the front and back position of micro-eyeglass (22) and is provided with several positioning convex (212).

3. evidence at the scene photomicrographic device as claimed in claim 1 is characterized in that:

The supply voltage of said electric battery (33) is 3V-3.7V, and electric current is 0.27A-0.33A.

4. evidence at the scene photomicrographic device as claimed in claim 1 is characterized in that:

A charger socket (35) that is connected respectively with the both positive and negative polarity of electric battery (33) also is installed on the said double-layer circular ring cover outer wall face.