CN218825106U - Horizontal multi-stage reflection spectroscope transmission imaging portable fingerprint photographic device - Google Patents

Abstract

The utility model provides a portable fingerprint camera device of spectroscope transmission imaging of horizontal direction multistage reflection, the optical distance of multiplicable formation of image light path and reduction volume obtain high quality fingerprint image, have better portability and ease for use; a light source assembly and a spectroscope are arranged in the box body, the light source assembly comprises a light source, a photographing hole and a material detecting hole are formed in the box body, light emitted by the light source is reflected by the spectroscope to form an illumination light path, and the light reflected by the spectroscope is reflected to the material detecting hole at the tail end of the illumination light path by a first reflector in the illumination light path; the light reflected by the irradiated fingerprint object at the position of the material checking hole is reflected by the first reflecting mirror and then transmitted through the spectroscope to form an imaging light path, and after multi-stage reflection is formed on the formed imaging light path through the second reflecting mirror, the third reflecting mirror and the fourth reflecting mirror, the light path from the light source to the first reflecting mirror and the light path from the first reflecting mirror to the fourth reflecting mirror are both positioned in the horizontal direction until reaching the photographic hole at the tail end of the imaging light path.

Description

Horizontal multi-stage reflection spectroscope transmission imaging portable fingerprint photographic device

Technical Field

The utility model relates to a court science and technology field specifically is portable fingerprint camera device of spectroscope transmission imaging of horizontal direction multistage reflection.

Background

Photographing is an important link in fingerprint and other trace evidence inspection work, if visible fingerprints and fingerprints processed by a physical or chemical method are found on site or on inspection materials, photographing and recording are carried out as soon as possible so as to prevent the fingerprints from fading or being accidentally damaged; the light distribution photography is to select a white light source or a light source with other wavelengths, adjust and control the brightness distribution of reflected light of a material to be detected by changing the incident angle and the direction of illumination light, so as to enhance the contrast between fingerprint lines and an object background pattern and weaken or eliminate the interference of the object background pattern, wherein, the light distribution photography has various methods, for fingerprints attached to the surface of smooth impermeable and semipermeable plane objects, the most common bright field photography is directed reflection photography, the most common dark field photography is dark field photography, and in different sites, the types and conditions of the fingerprints and the objects thereof are different, and different light distribution methods are required to be selected to effectively show the fingerprint lines and the detailed characteristics, but different light distribution devices are usually single in use, for example, the common directional reflector device in the fingerprint photography can only be used for the directed reflection photography of the bright field; the dark field light distribution device can only take a dark field photograph, and in addition, the size of the existing light distribution device and the attached shading parts is large, so that the existing light distribution device is difficult to operate by a single person, and the existing light distribution device is difficult to use due to complicated and changeable environmental conditions such as space, light and the like during field exploration, so that a good effect is difficult to achieve. For a bright field image of a fingerprint obtained by using the directional reflection light distribution device, when the distance between a camera lens and the fingerprint object is long, namely the optical path of an imaging light path is long, the contrast between a fingerprint line and the object background is large, the interference of a background pattern is small, the fingerprint display quality is good, but the device height needs to be high, and the miniaturization is difficult.

To solve the above problems, the prior patent nos.: ZL202021197361.7, name: a transmission imaging portable fingerprint photographing apparatus which can integrate a light distribution device into a small-sized portable apparatus, the reduction in volume and height of which enable the apparatus to be small-sized as compared with conventional apparatuses, but there is room for improvement in that: the light path length of the imaging light path is increased, so that a fingerprint image with better quality is obtained, and meanwhile, the volume is further reduced, particularly the height is reduced, so that better portability and usability are obtained.

Disclosure of Invention

To the above problem, the utility model provides a portable fingerprint camera device of spectroscope transmission imaging of horizontal direction multistage reflection, it can further increase the optical path of formation of image light path and reduce the volume to obtain the fingerprint image that the quality is higher, and have better portability and ease for use.

The technical scheme is as follows: portable fingerprint camera device of spectroscope transmission imaging of multistage reflection of horizontal direction, the power distribution box comprises a box body, be equipped with light source assembly, spectroscope in the box, light source assembly includes the light source, photographic hole and examine the material hole have been seted up on the box, the light that the light source sent is through spectroscope reflection is in order to form illumination light path, its characterized in that: the illumination light path also comprises a first reflecting mirror, and the light reflected by the spectroscope is reflected to the material detection hole at the tail end of the illumination light path by the first reflecting mirror; the light reflected by the irradiated fingerprint object at the position of the material detection hole is reflected by the first reflecting mirror and then transmitted through the spectroscope to form an imaging light path, and after multi-level reflection is formed on the formed imaging light path through a second reflecting mirror, a third reflecting mirror and a fourth reflecting mirror which are sequentially arranged until reaching the photographic hole at the tail end of the imaging light path, the light path from the light source to the first reflecting mirror and the light path from the first reflecting mirror to the fourth reflecting mirror are both positioned in the horizontal direction.

Furthermore, a condenser lens and an imaging objective lens are arranged in the box body, the condenser lens is arranged on the illumination light path between the light source and the spectroscope, and the imaging objective lens is arranged on the imaging light path between the spectroscope and the photographing hole;

further, the optical distance between the condenser and the light source is the same as the focal length of the condenser; the imaging objective lens is arranged on the imaging light path between the spectroscope and the second reflector; the optical axis of the imaging objective lens and the optical axis of the condenser are parallel to the bottom plane of the box body, and the two optical axes are vertically intersected; the spectroscope is arranged on an angular bisector of a right-angle included angle formed by the intersection of the two optical axes, and the spectroscope is perpendicular to the bottom plane of the box body;

furthermore, the material detecting hole is formed in the bottom of the box body, the first reflective mirror is arranged right above the material detecting hole, and the spectroscope is located on the horizontal side of the first reflective mirror; the optical axis of the imaging objective is vertically intersected with the central shaft axis of the material inspection hole; the first reflector is arranged on the intersection point of the two axes and is vertical to an angular bisector of a right-angle included angle formed by the intersection of the two axes;

further, the second reflective mirror is arranged on the imaging light path between the imaging objective lens and the third reflective mirror, and the second reflective mirror is arranged in parallel with the beam splitter; the photographic hole is arranged at the top of the box body right above the fourth reflective mirror, and the fourth reflective mirror and the first reflective mirror are arranged in parallel; the optical axis of the light reflected by the second reflector is vertically intersected with the optical axis of the incident light of the fourth reflector at a first intersection point; the third reflector is arranged on the first intersection point and is parallel to the spectroscope;

furthermore, the light source assembly adopts a single light source structure, and further comprises a shell and a light transmission amount adjusting piece, wherein the light source is assembled in the shell, the light transmission amount adjusting piece is arranged at the light emitting end of the light source, and the light transmission amount adjusting piece and the light source are coaxially arranged;

furthermore, the shell comprises an upper shell and a lower shell which are connected to form an inverted T-shaped structure, the light source comprises a light homogenizing plate, LED lamp beads and a metal substrate, the metal substrate is arranged in the upper shell, a fixing shell is arranged in the lower shell, the light homogenizing plate is arranged on the fixing shell and is arranged opposite to the LED lamp beads arranged on the metal substrate through a through hole in the fixing shell, and an electric wire connected to the metal substrate is LED out from the upper shell and then is connected with an external power supply;

furthermore, the light flux adjusting part adopts an adjustable diaphragm, the adjustable diaphragm is arranged at the bottom of the lower shell, a diaphragm gear is rotatably connected to the outer part of the upper shell, a shifting fork is assembled on the diaphragm gear, the bottom of the shifting fork is connected with a handle led out from the adjustable diaphragm, a diaphragm motor is arranged on the outer side of the shell, the diaphragm motor is connected with a first gear, and the first gear is in meshed connection with the diaphragm gear;

furthermore, a driving mechanism is arranged in the box body, so that the light emitted by the light source vertically irradiates or obliquely irradiates the fingerprint object at the position of the material detection hole at a certain angle;

furthermore, the driving mechanism adopts a rotating mechanism, a light source reflector is further arranged in the box body, the light source reflector is arranged on the illumination light path between the light source and the collecting lens, and the light source reflector is connected with the rotating mechanism and is driven by the rotating mechanism to rotate and adjust the angle of the light source reflector, so that the light emitted by the light source vertically irradiates or obliquely irradiates the fingerprint object at the material inspection hole at a certain angle;

furthermore, the central axis of the light source and the optical axis of the condenser are both parallel to the bottom plane of the box body and are vertically intersected at the intersection point II; the light source reflector is arranged on the second intersection point and is vertical to the bottom plane of the box body;

further, slewing mechanism includes the mount, the mount is fixed in the bottom inner wall of box, light source assembly, diaphragm motor all install in on the mount, rotate through the pivot on the mount and be connected with the rotating turret, the light source reflector install in on the rotating turret, the pivot with the bottom plane of box is mutually perpendicular, the reflector gear is equipped with to pivot one end, the reflector motor is equipped with on the mount, the reflector motor is connected with gear two, gear two with the meshing of reflector gear is connected.

The beneficial effects of the utility model are that, it utilizes spectroscope transmission formation of image, then through the first reflector that sets up, the second reflector, the third reflector, the fourth reflector, make at the multistage reflection on formation of image light path formation horizontal direction, the optical path of formation of image light path has further been increased, not only can realize various bright fields and dark field of fingerprint and take pictures, and weaken background pattern interference better, under the prerequisite of the fingerprint image that the quality is higher, can further reduce the whole height of device, reduce the device volume, make the device have better portability and ease for use.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic front view of the present invention;

FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;

FIG. 4 is a top view of the housing with the upper cover removed;

fig. 5 is a schematic view of the illumination light path of the present invention;

fig. 6 is a schematic diagram of the imaging optical path of the present invention;

fig. 7 is a schematic perspective view of the light source assembly of the present invention;

fig. 8 is a cross-sectional view of the light source assembly of the present invention.

In fig. 1 to 8: 1. a box body; 2. a photo hole; 3. a light source assembly; 4. a beam splitter; 5. material checking holes; 6. a condenser lens; 7. an imaging objective lens; 8. a first reflective mirror; 9. a second reflective mirror; 10. a third reflective mirror; 11. a light source; 12. a lower case; 13. an upper shell; 14. a light homogenizing plate; 15. LED lamp beads; 16. a metal substrate; 17. an adjustable diaphragm; 18. a handle; 19. a stationary case; 20. an electric wire; 21. a diaphragm gear; 22. a shifting fork; 23. a fourth reflective mirror; 24. a light source reflector; 25. a fixed mount; 26. a diaphragm motor; 27. a first gear; 28. a rotating frame; 29. a mirror gear; 30. a mirror motor; 31. a second gear; 32. a rotating shaft; 33. a through hole; 34. a first intersection point; 35. and a second intersection point.

Detailed Description

As shown in fig. 1 to 8, the portable fingerprint photographing device for spectroscope transmission imaging of horizontal multi-stage reflection comprises a box body 1, a light source assembly 3 and a spectroscope 4 are arranged in the box body 1, the light source assembly 3 comprises a light source 11, a photographing hole 2 and a material detecting hole 5 are arranged on the box body 1, light emitted by the light source 11 is reflected by the spectroscope 4 to form an illumination light path, the illumination light path further comprises a first reflective mirror 8, and the light reflected by the spectroscope 4 is reflected to the material detecting hole 5 at the tail end of the illumination light path by the first reflective mirror 8; the light reflected by the irradiated fingerprint object (not shown in the figure) positioned at the material detecting hole 5 is reflected by the first reflecting mirror 8 and then transmitted through the spectroscope 4 to form an imaging light path, and after multi-stage reflection is formed on the formed imaging light path through the second reflecting mirror 9, the third reflecting mirror 10 and the fourth reflecting mirror 23 which are sequentially arranged until reaching the photographing hole 2 at the tail end of the imaging light path, the light path from the light source 11 to the first reflecting mirror 8 and the light path from the first reflecting mirror 8 to the fourth reflecting mirror 23 are both positioned in the horizontal direction.

A condenser lens 6 and an imaging objective lens 7 are further arranged in the box body 1, the condenser lens 6 is arranged on an illumination light path between the light source 11 and the spectroscope 4, and the imaging objective lens 7 is arranged on an imaging light path between the spectroscope 4 and the photographic hole 2.

The optical distance between the condenser 6 and the light source 11 is the same as the focal length of the condenser 6; the imaging objective lens 7 is arranged on an imaging light path between the spectroscope 4 and the second reflective mirror 9; the optical axis of the imaging objective lens 7 and the optical axis of the condenser lens 6 are both parallel to the bottom plane of the box body 1, and the two optical axes are vertically intersected; the spectroscope 4 is arranged on an angular bisector of a right angle included angle formed by the intersection of two optical axes, and the spectroscope 4 is perpendicular to the bottom plane of the box body 1.

The material detecting hole 5 is arranged at the bottom of the box body 1, the first reflective mirror 8 is arranged right above the material detecting hole 5, and the spectroscope 4 is positioned on the horizontal side of the first reflective mirror 8; the optical axis of the imaging objective lens 7 is vertically intersected with the central shaft axis of the material inspection hole 5; the first reflector 8 is arranged on the intersection point of the two axes and is vertical to the bisector of a right angle formed by the intersection of the two axes.

The second reflective mirror 9 is arranged on an imaging light path between the imaging objective lens 7 and the third reflective mirror 10, and the second reflective mirror 9 is arranged in parallel with the spectroscope 4; the photographic hole 2 is arranged at the top of the box body 1 right above the fourth reflective mirror 23, and the fourth reflective mirror 23 is arranged in parallel with the first reflective mirror 8; the optical axis of the light reflected by the second reflecting mirror 9 is vertically intersected with the optical axis of the incident light of the fourth reflecting mirror 23 of the second reflecting mirror 9 at a first intersection point 34; the third retroreflector 10 is disposed at the first intersection point 34, and the third retroreflector 10 is disposed parallel to the beam splitter 4.

The light source assembly 3 adopts a single light source structure, and further comprises a shell and a light transmission quantity adjusting piece, wherein the light source 11 is assembled in the shell, the light transmission quantity adjusting piece is arranged at the light emitting end of the light source 11, and the light transmission quantity adjusting piece and the light source 11 are coaxially arranged; the shell comprises an upper shell 13 and a lower shell 12 which are connected to form an inverted T-shaped structure, the light source 11 comprises a light homogenizing plate 14, LED lamp beads 15 and a metal substrate 16, the metal substrate 16 is arranged in the upper shell 13, a fixing shell 19 is arranged in the lower shell 12, the light homogenizing plate 14 is arranged on the fixing shell 19 and is arranged opposite to the LED lamp beads 15 arranged on the metal substrate 16 through a through hole 33 in the fixing shell 19, and an electric wire 20 connected to the metal substrate 16 is LED out of the upper shell 13 and then is connected with an external power supply; the light flux adjusting part adopts an adjustable diaphragm 17, the adjustable diaphragm 17 is the prior art, details are not repeated in the patent, a handle 18 capable of adjusting the size of the diaphragm is arranged on the adjustable diaphragm 17, the adjustable diaphragm 17 is arranged at the bottom of the lower shell 12, the outer part of the upper shell 13 is rotatably connected with a diaphragm gear 21, a shifting fork 22 is assembled on the diaphragm gear 21, the bottom of the shifting fork 22 is connected with the handle 18 led out from the adjustable diaphragm 17, namely, the fork head of the shifting fork 22 is inserted into the handle 18; the outer side of the shell is provided with a diaphragm motor 26, the diaphragm motor 26 is connected with a first gear 27, and the first gear 27 is meshed with the diaphragm gear 21.

A driving mechanism is arranged in the box body 1, so that light emitted by the light source 11 vertically irradiates or obliquely irradiates a fingerprint object at the material detection hole 5 at a certain angle; specifically, the driving mechanism adopts a rotating mechanism, a light source reflector 24 is further arranged in the box body 1, the light source reflector 24 is arranged on a lighting light path between the light source 11 and the collecting mirror 6, the light source reflector 24 is connected with the rotating mechanism and is driven by the rotating mechanism to rotate and adjust the angle of the light source reflector 24, so that the light emitted by the light source 11 vertically irradiates or obliquely irradiates the fingerprint object at the material detecting hole 5 at a certain angle; the central axis of the light source 11 and the optical axis of the condenser 6 are both parallel to the bottom plane of the box body 1 and are vertically intersected at the intersection point II 35; the light source reflector 24 is arranged on the second intersection point 35, and the light source reflector 24 is vertical to the bottom plane of the box body 1.

The rotating mechanism comprises a fixed frame 25, the fixed frame 25 is fixed on the inner wall of the bottom of the box body 1, the light source assembly 3 and the diaphragm motor 26 are both arranged on the fixed frame 25, the fixed frame 25 is rotatably connected with a rotating frame 28 through a rotating shaft 32, the light source reflector 24 is arranged on the rotating frame 28, the rotating shaft 32 is perpendicular to the bottom plane of the box body 1, a reflector gear 29 is arranged at one end of the rotating shaft 32, a reflector motor 30 is arranged on the fixed frame 25, the reflector motor 30 is connected with a second gear 31, and the second gear 31 is in meshed connection with the reflector gear 29.

The principle of realizing that the light emitted by the light source 11 vertically irradiates or obliquely irradiates the fingerprint object at the material detecting hole 5 at a certain angle is as follows: the mirror motor 30 drives the second gear 31 to rotate, the second gear 31 drives the mirror gear 29 and the rotating frame 28 to rotate along with the rotating shaft 32, so that the light source mirror 24 can rotate, when the light source mirror 24 is perpendicular to an angular bisector of a right-angle included angle formed by a central axis of the light source 11 and an optical axis of the collecting mirror 6, namely the light source mirror 24 deflects the light emitted by the light source 11 by 90 degrees horizontally, the light emitted by the light source 11 vertically irradiates a fingerprint object at the material inspection hole 5, and when the light source mirror 24 is not perpendicular to the angular bisector of the right-angle included angle formed by the central axis of the light source 11 and the optical axis of the collecting mirror 6, namely the light emitted by the light source 11 obliquely irradiates the fingerprint object at the material inspection hole 5 at a certain angle when the light source mirror 24 deflects the light emitted by the light source 11 by more than 90 degrees or less than 90 degrees horizontally; and the diaphragm motor 26 drives the first gear 27 to rotate, the first gear 27 drives the diaphragm gear 21 to rotate, and the diaphragm gear 21 drives the shifting fork 22 and the handle 18 to rotate, so that the light passing aperture of the adjustable diaphragm 17 is changed.

The utility model discloses a working process is:

bright field fingerprint appearance: the light source reflector 24 rotates to enable the light source reflector 24 to be perpendicular to a central axis of the light source 11 and an angular bisector of a right-angle included angle formed by an optical axis of the condenser 6, namely the light source reflector 24 deflects light emitted by the light source 11 in a horizontal direction by 90 degrees, the LED lamp beads 15 emit light when electrified, the light emitted by the LED lamp beads 15 illuminates the light homogenizing plate 14, the light emitting area of the light homogenizing plate 14 is controlled by changing the light passing aperture of the adjustable diaphragm 17, the light emitted by the light source 11 is reflected by the light source reflector 24 and converged by the condenser 6 to form approximately parallel light, the approximately parallel light is reflected by the spectroscope 4 and then reflected by the first reflector 8 to approximately vertically irradiate a fingerprint object at the material detecting hole 5, the smooth and flat surface of the fingerprint object is equivalent to a mirror, the reflected light of the fingerprint object is still approximately parallel light, the reflected light of the approximately parallel light enters the imaging objective lens 7 after being transmitted for the first time by the first reflector 8, then reflected for the second time by the second reflector 9, reflected by the third reflector 10, reflected by the fourth reflector 23 for the fourth time, and finally the light is imaged by a camera to form a bright field background light; the fingerprint lines on the surface of the fingerprint object and the background patterns on the lower layer of the surface of the object are irradiated by light emitted by the light source 11, the reflected light has scattering property, the luminous flux which finally enters the camera at the position of the photographic hole 2 for imaging is relatively less after four reflections of the first reflector 8, the second reflector 9, the third reflector 10 and the fourth reflector 23, the fingerprint lines are expressed as dark lines with lower brightness than light background, and the background patterns are weakened; compared with the optical path length of reflected light of a fingerprint object in the traditional spectroscope transmission imaging method and a transmission imaging portable fingerprint photographic device (patent number: ZL 202021197361.7), the optical path length of the imaging optical path reaching the top of the device after the reflected light of the fingerprint object is reflected for four times by the first reflector 8, the second reflector 9, the third reflector 10 and the fourth reflector 23 and then reaches the photographic hole 2 is greatly prolonged, the light flux entering the camera at the photographic hole 2 along with the prolonging of the optical path is greatly reduced because the reflected light of fingerprint lines and the lower background pattern on the surface of the object is scattered light, and the light flux entering the camera at the photographic hole 2 along with the prolonging of the optical path is reduced a little because the reflected light of the smooth and flat surface of the fingerprint object is approximately parallel light, therefore, the prolonging of the optical path of the imaging optical path can enable the contrast between the fingerprint lines and a light-colored background to be larger, and the background pattern to be better weakened; and the illumination intensity of the fingerprint lines and the lower background patterns on the surface of the object is further improved or reduced by adjusting the clear aperture of the adjustable diaphragm 17, and the brightness of the light source 11 is adjusted until the appearance effect of the fingerprint lines is optimal.

Dark field fingerprint appearance: with the utility model discloses the various parameter settings that well light field fingerprint appeared keep unanimous, show light field fingerprint image earlier, through the rotation of light source reflector 24, make the light that light source 11 sent deviate from original 90, namely make the light that light source 11 sent reflect and gather after condensing lens 6 through light source reflector 24 and become approximate parallel light, reflect through spectroscope 4 and shine the fingerprint object of examining material hole 5 department with certain angle slope after first reflector 8, the smooth surface of fingerprint object is equivalent to a mirror, its reverberation is still approximate parallel light, along with the increase of the light irradiation inclination angle of fingerprint object, the light that reflects also deviates from the optical axis of formation of image light path after the fourth reflection of first reflector 8, second reflector 9, third reflector 10 and fourth reflector 23, the luminous flux that finally reaches formation of image in the camera of photograph hole 2 department is also less and less, cause the smooth surface of fingerprint object to image as the dark background of dark field; the fingerprint lines on the object are irradiated by oblique approximately parallel light, the reflected light of the fingerprint lines has scattering property, the luminous flux of images in the camera at the position of the photographic hole 2 is relatively more, the fingerprint lines are expressed as light-color lines with higher brightness than dark background brightness, the incident angle of incident light of the fingerprint object is changed by further rotating the light source reflector 24, the light-passing aperture of the adjustable diaphragm 17 is adjusted, and the brightness of the light source 11 is adjusted until the appearance effect of the fingerprint lines is optimal.

To sum up, the utility model discloses a photographic arrangement utilizes spectroscope 4 transmission imaging, obtains approximate parallel light irradiation fingerprint object through the cooperation of light source assembly 3 with condensing lens 6, and the light that the fingerprint object reflects arrives photographic hole 2 after the quartic reflection of first reflector 8, second reflector 9, third reflector 10 and fourth reflector 23, has prolonged the optical path of formation of image light path to the contrast of fingerprint line and object background in the bright field fingerprint appearance mode of greatly reinforcing, weaken the interference of eliminating the object background pattern even better, can obtain the bright field fingerprint image of higher quality; secondly, the direction of a light path is changed by rotating the light source reflector 24, so that the fingerprint object can be vertically irradiated or obliquely irradiated by incident light, and then a bright field image or a dark field image of the fingerprint can be obtained; in short, by arranging the optical devices such as the light source assembly 3, the beam splitter 4, the condenser 6, the imaging objective lens 7, the first reflecting mirror 8, the second reflecting mirror 9, the third reflecting mirror 10, the fourth reflecting mirror 23 and the like on the same horizontal plane, the overall height of the device can be further reduced, and the device has better portability and usability.

Wherein the arrows in fig. 5 indicate the illumination light path directions; the arrows in fig. 6 indicate the imaging optical path directions.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. For example, by moving the condenser lens 6 perpendicular to the optical axis, or moving the light source 11 on the focal plane of the condenser lens 6, or rotating the spectroscope 4, the light emitted by the light source 11 can be vertically irradiated or obliquely irradiated at a certain angle to the fingerprint object at the material detection hole 5; the number of reflectors is increased in the imaging light path, so that the imaging light path can be further prolonged. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (12)

1. Portable fingerprint camera device of spectroscope transmission imaging of multistage reflection of horizontal direction, the power distribution box comprises a box body, be equipped with light source assembly, spectroscope in the box, light source assembly includes the light source, photographic hole and examine the material hole have been seted up on the box, the light that the light source sent is through spectroscope reflection is in order to form illumination light path, its characterized in that: the illumination light path also comprises a first reflecting mirror, and the light reflected by the spectroscope is reflected to the material detection hole at the tail end of the illumination light path by the first reflecting mirror; the light reflected by the irradiated fingerprint object at the position of the material detection hole is reflected by the first reflecting mirror and then transmitted through the spectroscope to form an imaging light path, and after multi-level reflection is formed on the formed imaging light path through a second reflecting mirror, a third reflecting mirror and a fourth reflecting mirror which are sequentially arranged until reaching the photographic hole at the tail end of the imaging light path, the light path from the light source to the first reflecting mirror and the light path from the first reflecting mirror to the fourth reflecting mirror are both positioned in the horizontal direction.

2. The portable horizontal multi-level reflective spectroscopic transmission imaging fingerprint photographing device according to claim 1, wherein: still be equipped with condensing lens, formation of image objective in the box, the condensing lens set up in the light source with between the spectroscope illumination light path, formation of image objective set up in the spectroscope with between the photographic hole the formation of image light path.

3. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprinting apparatus of claim 2 further characterized by: the optical distance between the collecting mirror and the light source is the same as the focal length of the collecting mirror; the imaging objective lens is arranged on the imaging light path between the spectroscope and the second reflective mirror; the optical axis of the imaging objective lens and the optical axis of the condenser are parallel to the bottom plane of the box body, and the two optical axes are vertically intersected; the spectroscope is arranged on an angular bisector of a right-angle included angle formed by the intersection of the two optical axes, and the spectroscope is perpendicular to the bottom plane of the box body.

4. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprinting apparatus of claim 2 further characterized by: the material detecting hole is formed in the bottom of the box body, the first reflective mirror is arranged right above the material detecting hole, and the spectroscope is located on the horizontal side of the first reflective mirror; the optical axis of the imaging objective is vertically intersected with the central shaft axis of the material inspection hole; the first reflector is arranged on the intersection point of the two axes and is vertical to an angle bisector of a right-angle included angle formed by the intersection of the two axes.

5. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprint photographing device according to claim 2, wherein: the second reflecting mirror is arranged on the imaging light path between the imaging objective lens and the third reflecting mirror, and the second reflecting mirror is arranged in parallel with the spectroscope; the photographic hole is arranged at the top of the box body right above the fourth reflective mirror, and the fourth reflective mirror and the first reflective mirror are arranged in parallel; a light ray optical axis reflected by the second reflector is vertically intersected with an incident light ray optical axis of the fourth reflector at a first intersection point; the third reflective mirror is arranged on the first intersection point and is arranged in parallel with the spectroscope.

6. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprint photographing device according to claim 2, wherein: the light source assembly adopts single light source structure, still includes casing, light flux volume adjusting part, the light source assemble in the casing, light flux volume adjusting part set up in the light-emitting end of light source, just light flux volume adjusting part with the light source sets up with the axle center.

7. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprinting apparatus of claim 6 further comprising: the LED lamp comprises a shell and is characterized in that the shell comprises an upper shell and a lower shell which are connected with each other to form an inverted T-shaped structure, the light source comprises a light homogenizing plate, LED lamp beads and a metal substrate, the metal substrate is arranged in the upper shell, a fixing shell is arranged in the lower shell, the light homogenizing plate is arranged on the fixing shell and is arranged opposite to the LED lamp beads arranged on the metal substrate through holes in the fixing shell, and an electric wire connected to the metal substrate is LED out from the upper shell and then is connected with an external power supply.

8. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprinting apparatus of claim 7 further comprising: the adjustable diaphragm is arranged at the bottom of the lower shell, a diaphragm gear is rotatably connected to the outer portion of the upper shell, a shifting fork is assembled on the diaphragm gear, the bottom of the shifting fork is connected with a handle led out of the adjustable diaphragm, a diaphragm motor is arranged on the outer side of the shell and connected with a first gear, and the first gear is in meshed connection with the diaphragm gear.

9. The portable horizontal multi-level reflective spectroscopic transmission imaging fingerprint photographing device according to claim 8, wherein: and a driving mechanism is arranged in the box body, so that the light emitted by the light source vertically irradiates or obliquely irradiates the fingerprint object at the position of the material detection hole at a certain angle.

10. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprinting apparatus of claim 9 further comprising: the fingerprint object inspection device is characterized in that the driving mechanism adopts a rotating mechanism, a light source reflector is further arranged in the box body, the light source reflector is arranged on the illumination light path between the light source and the collecting lens, the light source reflector is connected with the rotating mechanism and is driven by the rotating mechanism to rotate and adjust the angle of the light source reflector, so that light emitted by the light source is vertically irradiated or obliquely irradiated to the fingerprint object at the position of the material inspection hole at a certain angle.

11. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprinting apparatus of claim 10 further comprising: the central shaft of the light source and the optical axis of the condenser are both parallel to the bottom plane of the box body and are vertically intersected at the intersection point II; the light source reflector is arranged on the second intersection point and is perpendicular to the bottom plane of the box body.

12. The portable horizontal multi-stage reflective spectroscopic transmission imaging fingerprinting apparatus of claim 10 further comprising: the rotating mechanism comprises a fixing frame, the fixing frame is fixed on the inner wall of the bottom of the box body, the light source assembly and the diaphragm motor are installed on the fixing frame, the fixing frame is connected with a rotating frame in a rotating mode through a rotating shaft, the light source reflector is installed on the rotating frame, the rotating shaft is perpendicular to the plane of the bottom of the box body, a reflector gear is installed at one end of the rotating shaft, a reflector motor is installed on the fixing frame and is connected with a second gear, and the second gear is connected with the reflector gear in a meshed mode.

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