CN217113346U - Non-contact binocular iris acquisition equipment - Google Patents
Non-contact binocular iris acquisition equipment Download PDFInfo
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- CN217113346U CN217113346U CN202123258904.9U CN202123258904U CN217113346U CN 217113346 U CN217113346 U CN 217113346U CN 202123258904 U CN202123258904 U CN 202123258904U CN 217113346 U CN217113346 U CN 217113346U
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Abstract
The utility model discloses a non-contact binocular iris collecting device, which belongs to the technical field of biological feature recognition, and comprises a front shell and a rear shell, wherein the middle part of the front shell is provided with a glass protective mask, a mainboard is arranged in the front shell, and a first infrared camera, a second infrared camera, a first visible light LED, a second visible light LED, a first infrared light LED, a second infrared light LED and a distance sensor are integrated on the mainboard; an infrared narrow band pass filter is arranged between the first infrared camera and the glass protective mask; an infrared narrow band pass filter is integrated in the second infrared camera, and the first infrared illumination LED and the second infrared illumination LED are alternately lighted during working. The utility model discloses a two side infrared light illumination LED light the mode in turn, avoid two mesh irises to gather the heterodromous light interference problem of appearance, promote iris image acquisition quality. Meanwhile, due to the non-contact design, iris image acquisition is facilitated, and the use experience of a user is improved.
Description
Technical Field
The utility model relates to a biological feature recognition technology field especially indicates a non-contact binocular iris collecting device.
Background
The iris, which is an important identification feature, has advantages of lifelong uniqueness, stability, non-invasiveness, difficulty in copying, and the like, and is widely considered as one of the most promising biometric identification and security authentication techniques. Iris collecting and comparing equipment is widely applied to the fields of finance, safety and the like. With the coming of public safety industry standard (GA) about the technical specification of the iris acquisition equipment, the iris image quality of the iris acquisition equipment is uniformly specified. Because the application of the iris acquisition equipment is easily influenced by ambient light, the quality of iris images is reduced, so the existing iris acquisition equipment meeting the GA technical requirements is mostly seen in contact type iris acquisition equipment, and the application and popularization of the iris technology are limited.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a need not to contact with the human face when gathering the iris image, the high non-contact binocular iris collection equipment of iris image acquisition quality.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
the utility model provides a non-contact binocular iris collection equipment, includes procapsid and back casing, the middle part of procapsid is equipped with glass protective mask, be equipped with the mainboard in the procapsid, wherein:
a first infrared camera, a second infrared camera, a first visible light illuminating LED, a second visible light illuminating LED, a first infrared illuminating LED, a second infrared illuminating LED and a distance sensor are integrated on the mainboard behind the glass protective mask;
the first infrared camera is used for collecting an iris image of one eye, the first visible light illuminating LED and the first infrared light illuminating LED are used for supplementing light for the first infrared camera, an infrared narrow band pass filter is arranged between the first infrared camera and the glass protective mask, and a visible light reflection coating is arranged on the infrared narrow band pass filter;
the second infrared camera is used for acquiring an iris image of the other eye, the second visible light illumination LED and the second infrared illumination LED are used for supplementing light for the second infrared camera, an infrared narrow band pass filter is integrated in the second infrared camera, and the first infrared illumination LED and the second infrared illumination LED are alternately lightened when working;
the distance sensor is used for detecting the distance between the human face and the equipment.
In some embodiments of the present invention, the band pass range of the infrared narrow band pass filter is 850 ± 25 nm.
In some embodiments of the present invention, the distance between the first infrared camera and the second infrared camera is 65 mm.
The utility model discloses some embodiments, first visible light illumination LED and second visible light illumination LED all adopt the paraxial lighting system, the distance between first visible light illumination LED and the first infrared camera is 12mm, the distance between second visible light illumination LED and the second infrared camera is 12 mm.
In some embodiments of the present invention, the front side of the front case is provided with a hand-shaped vertical protrusion.
In some embodiments of the present invention, the position on the rear case corresponding to the hand-shaped vertical protrusion portion is provided with a molding pattern, and/or the front opposite side of the front case is provided with a molding pattern.
The utility model discloses some embodiments, be equipped with in the back casing with the data communication board that the mainboard links to each other, be connected with on the data communication board stretch out to the outside USB interface of back casing.
In some embodiments of the present invention, a clamping portion for clamping and fixing the mobile terminal housing is disposed on the back surface of the rear housing, the clamping portion is concave, two side walls of the clamping portion are provided with guide rails, and a retractable lock tongue is disposed on one side of the guide rail;
a clamping release button for enabling the lock tongue to contract is arranged on the side surface of the front shell;
the back of mobile terminal shell is equipped with bellied slider, the both sides of slider be equipped with guide rail matched with spout, wherein be equipped with on one side spout and be used for holding the trompil of spring bolt.
The utility model discloses some embodiments, the back of mainboard is equipped with the battery that is used for the power supply, the battery adopts sticky mode to be fixed in on the back casing.
In some embodiments of the present invention, the front housing is provided with a power key, a power interface and/or an indicator light.
The utility model discloses following beneficial effect has:
the utility model discloses be equipped with visible light illumination LED and infrared light illumination LED and carry out the light filling to adopt two side infrared light illumination LED to light the mode in turn, avoid two meshes iris to gather the different side light interference problem of appearance, promote iris image acquisition quality. Meanwhile, due to the non-contact design, iris image acquisition is facilitated, and the use experience of a user is improved.
The optical filter with the visible light reflection coating is placed at the front end of the single-side camera, and the optical filter can play a role in optical guidance, so that the eyeball state can be maintained to be relatively stable, and the phenomenon of fuzzy moving objects in the process of shooting iris images is effectively prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a front view of the non-contact binocular iris collecting apparatus of the present invention;
FIG. 2 is a bottom view of the non-contact binocular iris collecting apparatus of FIG. 1;
fig. 3 is an internal structural view of the non-contact binocular iris collecting apparatus shown in fig. 2;
FIG. 4 is a schematic diagram of the two infrared light-emitting diodes of the present invention to avoid interference;
fig. 5 is a rear view of the non-contact binocular iris collecting apparatus of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a non-contact two mesh iris collection equipment, as shown in fig. 1-5, including procapsid 1 and back casing 2, the middle part of procapsid 1 is equipped with glass protective mask 3, is equipped with mainboard 4 in the procapsid 1, wherein:
a first infrared camera 5, a second infrared camera 6, a first visible light illuminating LED7, a second visible light illuminating LED8, a first infrared illuminating LED9, a second infrared illuminating LED10 and a distance sensor 11 are integrated on the rear surface of the glass protective mask 3 on the main board 4;
the first infrared camera 5 is used for collecting an iris image of one eye, the first visible light illuminating LED7 and the first infrared light illuminating LED9 are used for supplementing light for the first infrared camera 5, an infrared narrow band pass filter 12 is arranged between the first infrared camera 5 and the glass protective mask 3, and a visible light reflection coating is arranged on the infrared narrow band pass filter 12;
the second infrared camera 6 is used for collecting an iris image of the other eye, the second visible light illumination LED8 and the second infrared illumination LED10 are used for supplementing light for the second infrared camera 6, an infrared narrow band pass filter (not shown) is integrated in the second infrared camera 6, and the first infrared illumination LED9 and the second infrared illumination LED10 are alternately lightened (not lightened at the same time) when in work;
the distance sensor 11 is used to detect the distance between the face of the person and the device. The non-contact working distance can be flexibly set according to the requirement, for example, 160mm, and two cameras are used for shooting each eye respectively and capturing an iris image.
The utility model discloses in, be equipped with infrared narrow band pass filter 12 between first infrared camera 5 and the glass protective face guard 3, be equipped with visible light reflection coating on the infrared narrow band pass filter 12, this infrared narrow band pass filter 12's effect lies in: the interference that the shielding environment light pair caused on the one hand shot the iris picture, on the other hand plays the guide effect to the eyeball, because be equipped with visible light reflection coating on the light filter, to the high reflectivity (≧ 92%) characteristic of visible light, make its surface present the mirror surface effect, when shooting the iris picture, guide eyeball observation eyeball at the reflection virtual image on light filter surface, when playing assurance eyeball position uniformity, stabilize the eyeball, reduce the fuzzy problem of the moving object of shooting because eyeball motion brings, the iris image quality of shooting has been promoted.
The infrared camera 6 of second only has infrared narrow bandpass filter in inside integration, and the reason that its setting mode and first infrared camera 5 are different lies in, and the fixation thing of people's eye can only be 1, can not see two objects simultaneously, so under the scene is gathered to non-contact two mesh irises, set up like this and to make eyes watch on an infrared narrow bandpass filter 12, the better position of stabilizing the eyeball promotes iris image acquisition quality.
Moreover, the first infrared illumination LED9 and the second infrared illumination LED10 are alternately turned on (not turned on at the same time) during operation, and this operation mode is an alternate on/off manner, specifically, the first infrared illumination LED9 is turned on and the second infrared illumination LED10 is turned off during shooting of the left eye; the second infrared light illumination LED10 is turned on and the first infrared light illumination LED9 is turned off when shooting the right eye. The advantage lies in avoiding when shooing people's left and right eye iris, if first infrared light illumination LED9 and second infrared light illumination LED10 lights up simultaneously, as shown in fig. 4, the second infrared light illumination LED10 that provides the right eye illumination can cause the influence to the shooting of left eye iris, causes the illumination degree of consistency to descend on the one hand, can present the bright spot in the left eye iris on the other hand, reduces the iris image quality and descends. In fig. 4, 41 is an eyeball, 42 is an iris, 43 is a pupil, 44 is a bright spot presented by the first infrared illumination LED9 at the pupil 43, the bright spot 44 does not affect iris image quality, and 45 is a bright spot presented by the second infrared illumination LED10 at the iris area, the bright spot 45 affects iris image quality. Similarly, the first infrared illumination LED9 may also affect right eye iris capture.
To sum up, the utility model discloses following beneficial effect has:
1) the utility model discloses be equipped with visible light illumination LED and infrared light illumination LED and carry out the light filling to adopt two side infrared light illumination LED to light the mode in turn, avoid two meshes iris to gather the different side light interference problem of appearance, promote iris image acquisition quality. Meanwhile, due to the non-contact design, iris image acquisition is facilitated, and the use experience of a user is improved.
2) The optical filter with the visible light reflection coating is placed at the front end of the single-side camera, and the optical filter can play a role in optical guidance, so that the eyeball state can be maintained to be relatively stable, and the phenomenon of fuzzy moving objects in the process of shooting iris images is effectively prevented.
In the utility model, the band-pass range of the infrared narrow band-pass filter 12 arranged at the front end of the first infrared camera 5 or the infrared narrow band-pass filter integrated in the second infrared camera 6 can be 850 +/-25 nm; the narrow infrared band pass filter 12 may be adhesively secured to the glass protective face mask 3. The distance between the first infrared camera 5 and the second infrared camera 6 may be 65mm, which is consistent with the mean value of the interpupillary distance of the human eyes. The two cameras can be designed in a small field angle, large depth of field and high sensitivity to infrared light. The light filters on the two cameras can effectively shield light interference from the external environment, and basic conditions are provided for shooting high-definition iris images. First visible light illumination LED7 and second visible light illumination LED8 are placed respectively by first infrared camera 5 and second infrared camera 6, adopt the paraxial lighting mode, carry out the light filling for the left and right eyeball of iris collection in-process respectively, preferentially, the distance between first visible light illumination LED7 and first infrared camera 5 is 12mm, the distance between second visible light illumination LED8 and the second infrared camera 6 is 12mm, the light filling effect is best under this distance.
First visible light illumination LED7 and second visible light illumination LED8 are eyeball pupil light filling in iris collection process, and its work brightness level can be designed to adjust according to pupil size (CPU detects pupil size on the mainboard, feeds back pupil size to LED's control chip, and control chip adjusts LED brightness level), specifically can be: under the condition of too dark environment, the pupils of human eyes can automatically contract, so that the iris image is obviously deformed, and the infrared illumination light source is easy to present bright spots in the iris area of the eyeballs, so that the collection quality of an effective area and the iris image is reduced. The self-adaptive mode design of the working brightness levels of the first visible light illuminating LED7 and the second visible light illuminating LED8 can effectively stimulate the pupil size to meet the quality requirement of iris acquisition images in various environments, and the application scenes of the device are widened.
The distance sensor 11 is arranged below the glass protective mask 3 and is used for detecting the distance between the human face and the equipment in the working process of the equipment, feeding back a CPU on the main board in real time, uploading distance data to software of the upper computer by the CPU, and when the distance between the equipment and the human face meets set parameters of the working distance (for example, 160 mm) of a lens and the depth of field (for example, 30 mm), the iris image is in a state of clear focus and good quality, and the software automatically acquires the iris image and stores the iris image to the upper computer.
The utility model discloses in, constitute the exterior structure of equipment by procapsid 1, lower casing 2, glass protective mask 3, form airtight protection chamber in to equipment. The method specifically comprises the following steps: the glass protective mask 3 is embedded into the front shell 1 and can be fixed by adopting an adhesive way; the front case 1 and the rear case 2 are snapped together to form a device protective case, and the front case 1 and the rear case 2 may be fixed together by screws. Wherein, one side of the front surface of the front shell 1 (the embodiment shown in the figure is a left hand-held part) is provided with a hand-imitating vertical bulge 13, which accords with the ergonomics and is convenient for a user to hold by four fingers, and furthermore, the position of the rear shell 2 corresponding to the hand-imitating vertical bulge 13 can be provided with a modeling grain 14 so as to be convenient for the user to hold by the thumb; and/or, the other side of the front surface of the front case 1 is provided with a sculpting line 15 to facilitate the holding of the other hand of the user.
In a further embodiment, a data communication board 16 connected to the main board 4 may be disposed in the rear housing 2, and a USB interface 17 extending to the outside of the rear housing 2 is connected to the data communication board 16 and exposed for data communication with a mobile device such as a mobile phone.
As shown in fig. 5, the back of the rear case 2 may further be provided with a clamping portion 21 for clamping and fixing the mobile terminal housing, the clamping portion 21 is concave, two sidewalls of the clamping portion 21 are provided with guide rails 22, and one of the guide rails is provided with a retractable locking tongue 23;
a clamping release button 18 for contracting the bolt 23 is arranged on the side surface of the front shell 1;
a convex sliding block is arranged on the back of the mobile terminal shell (not shown) and is used for being matched with the clamping part 21, sliding grooves matched with the guide rails 22 are arranged on two sides of the sliding block, and an opening used for accommodating the bolt 23 is formed in one sliding groove.
Clamping part 21 is used for fixing mobile terminal equipment on this non-contact binocular iris collection equipment, specifically can be: a shell is arranged for the mobile terminal equipment, and the back of the shell is provided with the convex sliding block; when the mobile terminal equipment is assembled into the iris acquisition equipment, the sliding block on the back of the shell slides in along the guide rail of the clamping part until the USB port of the mobile terminal equipment is connected with the USB interface of the iris acquisition equipment in place, and the sliding block on the shell of the mobile equipment is clamped by the spring bolt of the clamping part. When the clamping release button of the iris acquisition equipment is pressed down, the spring bolt of the clamping part retracts into the rear shell of the iris acquisition equipment, the shell of the mobile terminal equipment can slide out of the iris acquisition equipment from the guide rail, and the equipment is collected.
Therefore, the utility model discloses a non-contact two mesh iris collection equipment can be connected with handheld devices such as cell-phone, police service expert, gathers people's eye iris image. When the equipment collects the iris image, the equipment is in non-contact with the human face and is not easily influenced by ambient light, the portability is enhanced, the iris collecting efficiency is improved, and the application scene of the iris equipment is enlarged.
The utility model discloses in some embodiments, the back of mainboard 4 can be equipped with the battery 19 that is used for the power supply, and battery 19 can adopt sticky mode to be fixed in and continue a journey for equipment work on the back casing 2.
The side of the front case 1 may be provided with a power-on key 24, a power interface (not shown), and the back of the front case 1 may be provided with an indicator lamp 25. The power-on key 24 is used for power-on, the power interface is used for charging the iris collecting device, and the indicator light 25 is used for indicating the working state and the charging state of the iris collecting device. When the mobile terminal device is fixed with the non-contact binocular iris collecting device and the power-on key 24 is pressed, an iris collecting interface can be displayed on the mobile terminal device, and a manager holds the iris collecting device to face a user to collect iris data.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a two mesh iris collection equipment of non-contact, includes procapsid and back casing, its characterized in that, the middle part of procapsid is equipped with glass protective mask, be equipped with the mainboard in the procapsid, wherein:
a first infrared camera, a second infrared camera, a first visible light illuminating LED, a second visible light illuminating LED, a first infrared illuminating LED, a second infrared illuminating LED and a distance sensor are integrated on the mainboard behind the glass protective mask;
the first infrared camera is used for collecting an iris image of one eye, the first visible light illuminating LED and the first infrared light illuminating LED are used for supplementing light for the first infrared camera, an infrared narrow band pass filter is arranged between the first infrared camera and the glass protective mask, and a visible light reflection coating is arranged on the infrared narrow band pass filter;
the second infrared camera is used for collecting an iris image of the other eye, the second visible light illumination LED and the second infrared illumination LED are used for supplementing light for the second infrared camera, an infrared narrow bandpass filter is integrated in the second infrared camera, and the first infrared illumination LED and the second infrared illumination LED are alternately lightened when working;
the distance sensor is used for detecting the distance between the human face and the equipment.
2. The binocular iris collecting apparatus of claim 1, wherein the band pass range of the narrow infrared band pass filter is 850 ± 25 nm.
3. The binocular iris collecting apparatus of claim 1, wherein a distance between the first and second infrared cameras is 65 mm.
4. The non-contact binocular iris collecting apparatus of claim 1, wherein the first visible light illumination LED and the second visible light illumination LED both adopt a paraxial illumination mode, a distance between the first visible light illumination LED and the first infrared camera is 12mm, and a distance between the second visible light illumination LED and the second infrared camera is 12 mm.
5. The binocular iris collecting apparatus of claim 1, wherein the front side of the front housing is provided with a hand-simulated vertical protrusion.
6. The binocular non-contact iris collecting apparatus of claim 5, wherein the rear housing is provided with a shaping line at a position corresponding to the hand-shaped vertical protrusions, and/or the front housing is provided with a shaping line at the other side of the front surface.
7. The non-contact binocular iris collecting device of claim 1, wherein a data communication board connected with the main board is disposed in the rear housing, and a USB port extending to the outside of the rear housing is connected to the data communication board.
8. The non-contact binocular iris collecting apparatus of any one of claims 1 to 7, wherein a clamping portion for clamping and fixing a housing of a mobile terminal is provided at a rear surface of the rear housing, the clamping portion is concave, guide rails are provided on both sidewalls of the clamping portion, and a retractable locking tongue is provided on one side of the guide rail;
a clamping release button for enabling the lock tongue to contract is arranged on the side surface of the front shell;
the back of mobile terminal shell is equipped with bellied slider, the both sides of slider be equipped with guide rail matched with spout, wherein be equipped with on one side spout and be used for holding the trompil of spring bolt.
9. The binocular iris collecting apparatus of claim 8, wherein a storage battery for supplying power is provided on a rear surface of the main plate, and the storage battery is fixed to the rear housing by gluing.
10. The binocular iris collecting apparatus of claim 8, wherein the front housing has a power-on key, a power interface and/or an indicator light thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123258904.9U CN217113346U (en) | 2021-12-22 | 2021-12-22 | Non-contact binocular iris acquisition equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123258904.9U CN217113346U (en) | 2021-12-22 | 2021-12-22 | Non-contact binocular iris acquisition equipment |
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| Publication Number | Publication Date |
|---|---|
| CN217113346U true CN217113346U (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123258904.9U Active CN217113346U (en) | 2021-12-22 | 2021-12-22 | Non-contact binocular iris acquisition equipment |
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| CN (1) | CN217113346U (en) |
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2021
- 2021-12-22 CN CN202123258904.9U patent/CN217113346U/en active Active
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