CN217885991U - Eye movement tracking imaging system - Google Patents

Abstract

The utility model provides an eye movement tracking imaging system, include: the long-focus camera is used for acquiring an eye micro-feature image in real time; the first motion assembly is in driving connection with the tele camera and is used for keeping the focal length of the tele camera fixed and driving the tele camera to rotate around a first direction so as to adjust the lens pitch angle of the tele camera; the second motion assembly is in driving connection with the tele camera and is used for keeping the focal length of the tele camera fixed and driving the tele camera to rotate around the second direction so as to adjust the transverse roll angle of the lens of the tele camera. The utility model discloses make the target image definition that the eye movement tracked imaging system location target does not miss target, obtain high.

Description

Eye movement tracking imaging system

Technical Field

The utility model relates to a track imaging technology field particularly, relates to an eye movement tracking imaging system.

Background

With the continuous development of science and technology, personal biological information identification (PBIC) based on the extraction of eyeball features is applied to various aspects of production and life such as industrial production, safety protection, media entertainment and the like. The extraction of the image eyeball characteristic information is a precondition and a basis for identifying and analyzing the individual behavior pattern, and further, the behavior and consciousness of people can be analyzed. In the eyeball imaging process, the traditional wide-angle camera can stably obtain eyeball imaging information in real time, but due to the imaging resolution, the micro-feature information of the eyeball imaging information is lost, the telephoto camera can obtain the micro-feature information of the eyeball imaging in real time, but the imaging view field of the telephoto camera is small, and in the imaging process, the eyeball features are easy to miss due to the movement of people and difficult to image, so that the development of personal behavior pattern recognition and analysis work based on the eyeball features faces serious difficulties.

At present, a method is often adopted to realize the acquisition of eyeball micro-feature information by aligning an imaging device to an eyeball in a short distance, which has very large limitation, the photographed eyeball must be kept still and short-distance photographing can be realized, if the distance of the eyeball photographing is too far, high-resolution eyeball micro-feature information is difficult to obtain, even the problems of pixel blurring and the like occur, if the distance of the eyeball photographing is too close, the complete eyeball micro-feature information is difficult to obtain, and in addition, if a user moves slightly, eyeball imaging is easy to miss, the eyeball micro-feature information is difficult to obtain and the like. The method has more requirements on monitored people, the user experience is extremely poor, and the method is difficult to put into practical use; another method is to use a zoom camera, and the method firstly adopts a short focus to search for the approximate spatial position of a target, and then adopts a long focus, if short-distance eye-aiming shooting is not realized but wide-angle shooting is selected, clear eyeball information cannot be acquired at all, only eyeball image information with low pixels at a wide angle can be acquired, and the defects of incomplete acquired image information, blurred pixels and the like exist.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an eye tracking imaging system that effectively solves at least one of the above problems.

In order to solve the above problem, the utility model provides an eye tracking imaging system, include:

the long-focus camera is used for acquiring an eye micro-feature image in real time;

the first motion assembly is in driving connection with the tele camera and is used for keeping the focal length of the tele camera fixed and driving the tele camera to rotate around a first direction so as to adjust the lens pitch angle of the tele camera; the second motion assembly is in driving connection with the tele camera and is used for keeping the focal length of the tele camera fixed and driving the tele camera to rotate around the second direction so as to adjust the transverse roll angle of the lens of the tele camera.

Optionally, the motion platform further includes a first carrying platform, and the telephoto camera is disposed on the first carrying platform; the first motion assembly comprises a first driving piece, the first driving piece is in driving connection with the first carrying platform and used for driving the first carrying platform to rotate around the first direction.

Optionally, this eye-tracking imaging system still includes first locating part and connecting piece, first driving piece includes first motor, the one end sliding connection of connecting piece in first year platform, the other end of connecting piece is equipped with swing joint's connector link, the pivot of first motor with connector link threaded connection, first locating part is located on the removal route of connector link, in order to restrict the connector link breaks away from the pivot of first motor.

Optionally, the motion platform further includes a second carrying platform, and the second motion assembly is disposed on the second carrying platform; the second carrying platform is movably arranged on the first carrying platform; the long-focus camera is arranged on the first carrying platform through the second carrying platform; the second motion assembly comprises a second driving piece, and the second driving piece is in driving connection with the second carrying platform and used for driving the second carrying platform to rotate around the second direction.

Optionally, an arc-shaped groove is formed in the first carrying platform, the second carrying platform faces the end face of the first carrying platform, a guide block is arranged on the end face of the first carrying platform in a sliding mode and arranged in the arc-shaped groove, and the circle center of the arc-shaped groove is perpendicular to the radius of the arc-shaped groove and the central axis of the lens of the telephoto camera.

Optionally, the second motion assembly further comprises a telescopic piece capable of achieving telescopic action, one end of the telescopic piece is in driving connection with the second driving piece, and the other end of the telescopic piece is connected with the second carrying platform;

when the second driving piece drives the second carrying platform through the telescopic piece, the telescopic piece is suitable for being stretched or shortened so that the guide block can slide in the arc-shaped groove.

Optionally, the eye tracking imaging system further includes a second limiting member, the second driving member includes a second motor, a rotating shaft of the second motor is in threaded connection with the extensible member, and the second limiting member is located on a moving path of the extensible member to limit the second limiting member from disengaging from the rotating shaft of the second motor.

Optionally, the eye tracking imaging system further includes a fixing base, an installation frame, and a wide-angle camera, where the wide-angle camera is used to obtain facial images of each person in a dynamic and large-field-of-view multi-information environment in real time, an installation groove is formed in the fixing base, the installation frame and the motion platform are both arranged in the installation groove, and the wide-angle camera is installed on the installation frame; the lateral wall of fixing base be equipped with the communicating formation of image mouth of mounting groove, just wide angle camera with long burnt camera arrives the optical path difference of formation of image mouth is zero.

Optionally, the eye tracking imaging system further comprises a control component and a cover, the control component is disposed on the fixing base, and the control component is electrically connected to the wide-angle camera, the tele-camera and the motion platform; the sealing cover is covered on the fixed seat, and the control assembly is positioned inside the sealing cover.

Optionally, the eye tracking imaging system further includes a control component, the control component is disposed on the fixing base, and the control component is electrically connected to the wide-angle camera, the telephoto camera and the motion platform.

Optionally, the eye tracking imaging system further comprises a cover, the cover is covered on the fixing seat, and the control assembly is located inside the cover.

Compared with the prior art, the beneficial effects of the utility model are that:

when the eye tracking imaging system works, the long-focus camera is used for acquiring an eye micro-feature image in real time, and the definition of the acquired target image is high; meanwhile, a first motion assembly of the motion platform is in driving connection with the tele camera, so that the focal length of the tele camera can be kept fixed and the tele camera can be driven to rotate around a first direction, and the lens pitch angle of the tele camera can be adjusted; the second motion assembly is in driving connection with the long-focus camera, the focal length of the long-focus camera can be kept fixed, the long-focus camera is driven to rotate around the second direction, the lens roll angle of the long-focus camera is adjusted, after the roll angle and the longitudinal inclination angle of the long-focus camera are adjusted, the long-focus camera focuses to acquire the micro-feature image of the eye in real time, the definition of the obtained target image is high, and when the long-focus camera acquires the micro-feature image of the eye, the positioning target is prompted not to miss.

Drawings

Fig. 1 is an exploded view of the eye tracking imaging system of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a motion platform according to the present invention;

fig. 3 is a schematic structural diagram of an embodiment of a first mounting platform according to the present invention;

fig. 4 is an assembly view of the eye tracking imaging system of the present invention;

fig. 5 is a schematic structural view of an embodiment of the middle fixing base of the present invention.

Description of reference numerals:

1. a wide-angle camera; 2. a tele camera; 3. a motion platform; 31. a first driving member; 32. a first mounting platform; 321. a connecting member; 322. mounting a plate; 323. a connecting edge; 324. an arc-shaped slot; 3211. a card holder; 3212. a first slide bar; 3213. connecting buckles; 33. a first limit piece; 34. a second mounting platform; 341. connecting columns; 35. a second driving member; 36. a telescoping member; 361. a sliding sleeve; 362. a travel bar; 37. a second limit piece; 4. a fixed seat; 41. an imaging port; 42. mounting grooves; 5. a control component; 51. strawberry pie; 52. a switch; 6. sealing the cover; 7. a mounting frame; 8. a lens assembly; 81. a half-reflecting and half-transmitting mirror; 82. a mirror.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

The Z-axis in the drawings indicates a vertical direction, i.e., an up-down position, and a forward direction of the Z-axis (i.e., an arrow direction of the Z-axis) represents an upward direction and a reverse direction of the Z-axis represents a downward direction; the X-axis in the drawing represents the horizontal direction and is designated as the left-right position, and the forward direction of the X-axis represents the left side and the reverse direction of the X-axis represents the right side; the Y-axis in the drawings represents the front-rear direction and is designated as the front-rear position, and the forward direction of the Y-axis represents the front side and the reverse direction of the Y-axis represents the rear side; it should also be noted that the foregoing Z-axis, X-axis, and Y-axis representations are merely intended to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

As shown in fig. 1 and 2, the eye tracking imaging system of the embodiment of the present invention includes a tele camera 2 and a motion platform 3, wherein the tele camera 2 is used for acquiring micro-feature images of eyes in real time, the motion platform 3 includes a first motion component and a second motion component, the first motion component is in driving connection with the tele camera 2, and is used for keeping the focal length of the tele camera 2 fixed and driving the tele camera 2 to rotate around a first direction, so as to adjust the lens pitch angle of the tele camera 2; the second motion assembly is in driving connection with the tele camera 2 and is used for keeping the focal length of the tele camera 2 fixed and driving the tele camera 2 to rotate around the second direction so as to adjust the transverse roll angle of the lens of the tele camera 2.

In this embodiment, the first direction refers to a rotation direction (described later) of the first mounting platform 2 relative to the fixed base 4, that is, a direction of an X axis in fig. 1. The second direction is an axial direction of arcuate slot 324 (described below). The telephoto camera 2 has an auto-focusing function. After the eye movement tracking imaging system of the embodiment is adopted, when the eye movement tracking imaging system works, the first motion assembly of the motion platform 3 is in driving connection with the tele camera 2 and is used for keeping the focal length of the tele camera 2 fixed and driving the tele camera 2 to rotate around the first direction so as to adjust the lens pitch angle of the tele camera 2; the second motion assembly is in driving connection with the tele camera 2 and is used for keeping the focal length of the tele camera 2 fixed and driving the tele camera 2 to rotate around the second direction so as to adjust the roll angle of the lens of the tele camera 2, and after the roll angle and the longitudinal inclination angle of the tele camera 2 are adjusted, the tele camera 2 acquires the eye micro-feature image in real time after focusing.

Optionally, the motion platform 3 further includes a first carrying platform 32, and the telephoto camera 2 is disposed on the first carrying platform 32; the first moving assembly comprises a first driving member 31, and the first driving member 31 is in driving connection with the first carrying platform 32 and is used for driving the first carrying platform 32 to rotate around the first direction.

In this embodiment, the first driving component 31 includes a first motor or a first cylinder, and the first carrying platform 32 is rotatably connected with the fixed seat 4 (described later); when the first driving member 31 includes the first motor, the first carrying platform 32 is connected to the rotating shaft of the first motor through the connecting member 321, after the first motor is powered on, the rotating shaft of the first motor rotates, and due to the existence of the connecting member 321, one end of the first carrying platform 32 is driven by the first motor to ascend or descend, so as to finally realize that the first carrying platform 32 rotates around the rotating connection position of the first carrying platform 32 and the fixing base 4. Similarly, when the first driving member 31 includes the first cylinder, when the first cylinder works, one end of the first carrying platform 32 is driven by the first cylinder to ascend or descend, and finally, the first carrying platform 32 rotates around the rotating connection position of the first carrying platform 32 and the fixed seat 4.

So set up, under the effect of first driving piece 31, can realize that first mounting platform 32 rotates around the first direction, because long burnt camera 2 sets up on first mounting platform 32, so long burnt camera 2 can follow first mounting platform 32 and rotate around the first direction to the lens angle of pitch of adjustment long burnt camera 2.

Optionally, the eye-tracking imaging system further includes a first limiting member 33 and a connecting member 321, the first driving member 31 includes a first motor, one end of the connecting member 321 is slidably connected to the first carrying platform 32, the other end of the connecting member 321 is provided with a movably connected connecting buckle 3213, a rotating shaft of the first motor is in threaded connection with the connecting buckle 3213, and the first limiting member 33 is located on a moving path of the connecting buckle 3213 to limit the connecting buckle 3213 to be disengaged from the rotating shaft of the first motor.

Specifically, the first motor is disposed at a side of the first carrying platform 32, a clamping seat 3211 is disposed on the first carrying platform 32, the connecting member 321 includes a first sliding rod 3212 slidably connected to the clamping seat 3211, specifically, a sliding groove is disposed on the clamping seat 3211, one end of the first sliding rod 3212 is slidably connected to the sliding groove, a movably connected connecting buckle 3213 is disposed at the other end of the first sliding rod 3212, a rotating shaft of the first motor is in threaded connection with the connecting buckle 3213, for example, an external thread is disposed on the rotating shaft of the first motor, the connecting buckle 3213 is provided with a threaded passage, the connecting buckle 3213 is in threaded connection with the rotating shaft of the first motor through the threaded passage, and when the rotating shaft of the first motor drives the connecting buckle 3213, the first sliding rod 3212 and the connecting buckle 3213 rotate relatively; the first position-limiting element 33 is located on a moving path of the connection buckle 3213 to limit the connection buckle 3213 from disengaging from the rotating shaft of the first motor, and specifically, the first position-limiting element 33 is located near a free end of the rotating shaft of the first motor, and when the connection buckle 3213 moves to the free end of the rotating shaft of the first motor, it is blocked by the first position-limiting element 33, so the connection buckle 3213 does not disengage from the rotating shaft of the first motor. As shown in fig. 2, the first limiting member 33 is in a zigzag shape, one end of the first limiting member 33 is fixed to a fixed seat 4 (described later), the other end of the first limiting member 33 is located above the rotating shaft of the first motor, and a gap exists between a portion of the first limiting member 33 located above the rotating shaft of the first motor and the rotating shaft of the first motor, the gap is smaller than the depth of the threaded hole of the first sliding rod 3212, so the first limiting member 33 does not hinder the rotating shaft of the first motor from moving.

With such an arrangement, under the action of the first limiting member 33, the stroke of the connecting member 321 can be limited, and the connecting member 321 is prevented from being separated from the rotating shaft of the first motor.

Optionally, the motion platform 3 further includes a second carrying platform 34, and a second motion assembly is disposed on the second carrying platform 34; the second carrying platform 34 is movably arranged on the first carrying platform 32; the telephoto camera 2 is arranged on the first carrying platform 32 through the second carrying platform 34; the second moving assembly comprises a second driving member 35, and the second driving member 35 is in driving connection with the second carrying platform 34 and is used for driving the second carrying platform 34 to rotate around the second direction.

Specifically, the second moving component is disposed on the second carrying platform 34, specifically, a mounting plate 322 is disposed on the second carrying platform 34, and the second moving component is fixed on the mounting plate 322 by screws. The second carrying platform 34 is movably arranged on the first carrying platform 32, and the second carrying platform 34 can rotate around the second direction; the telephoto camera 2 is disposed on the first mounting platform 32 through the second mounting platform 34, and when the second mounting platform 34 rotates around the second direction on the first mounting platform 32, the telephoto camera 2 also rotates around the second direction, thereby adjusting a lens roll angle of the telephoto camera 2.

In this embodiment, the second driving member 35 includes a second motor or a second cylinder, and the second motor or the second cylinder is fixed on the mounting plate 322; when the second driving member 35 includes a second motor, the rotating shaft of the second motor is in threaded connection with the second carrying platform 34, and after the second motor is powered on, the rotating shaft of the second motor rotates, and the portion of the second carrying platform 34 connected with the rotating shaft of the second motor moves along the axial direction of the rotating shaft, so that the second carrying platform 34 is driven to move relative to the first carrying platform 32. When the second driving member 35 includes the second cylinder, the extension rod of the second cylinder is connected to the second carrying platform 34, and when the second cylinder works, the connection portion of the second carrying platform 34 and the extension rod of the second cylinder moves along with the extension rod, so that the second carrying platform 34 is moved relative to the first carrying platform 32.

With this arrangement, the second mounting platform 34 can be moved on the first mounting platform 32 by the second driver 35, and the telephoto camera 2 is arranged on the first mounting platform 32 via the second mounting platform 34, so that the telephoto camera 2 can move on the first mounting platform 32 following the second mounting platform 34, thereby adjusting the position of the telephoto camera 2.

Optionally, an arc-shaped groove 324 is formed in the first carrying platform 32, the second carrying platform 34 faces the end face of the first carrying platform 32 and is provided with a guide block, the guide block is slidably disposed in the arc-shaped groove 324, and a connecting line between a circle center of the arc-shaped groove 324 and a central point of a lens of the telephoto camera 2 is perpendicular to a radius of the arc-shaped groove 324 and a central axis of the lens of the telephoto camera 2.

Specifically, as shown in fig. 3, the first carrying platform 32 is provided with an arc-shaped groove 324 along the thickness direction (the direction of the Z axis), the end surface of the second carrying platform 34 facing the first carrying platform 32 is provided with a guide block, the guide block is arc-shaped, the guide block is slidably disposed in the arc-shaped groove 324, and a connection line between the center of the arc-shaped groove 324 and the central point of the lens of the telephoto camera 2 is perpendicular to the radius of the arc-shaped groove 324 and the central axis of the lens of the telephoto camera 2, that is, the second carrying platform 34 can perform conical swing motion relative to the first carrying platform 32, so as to promote the telephoto camera 2 to perform conical swing motion relative to the first carrying platform 32.

Optionally, the second moving assembly further comprises a telescopic member 36 capable of realizing telescopic, one end of the telescopic member 36 is in driving connection with the second driving member 35, and the other end of the telescopic member 36 is connected with the second carrying platform 34;

when the second driving member 35 drives the second loading platform 34 through the telescopic member 36, the telescopic member 36 is adapted to be extended or shortened to slide the guide block in the arc-shaped slot 324.

Specifically, the extensible member 36 includes a sliding sleeve 361 and a moving rod 362, one end of the moving rod 362 is slidably connected to the sliding sleeve 361, and the other end of the moving rod 362 is connected to the second mounting platform 34. The sliding sleeve 361 is in threaded connection with the rotating shaft of the second motor, when the second motor works, the second motor drives the sliding sleeve 361 to move along the axial direction (the direction of the X axis) of the rotating shaft, and because the guide block is located in the arc-shaped groove 324, the second carrying platform 34 cannot move linearly along the direction of the X axis, the moving rod 362 can extend or shorten relative to the sliding sleeve 361, so that the guide block slides in the arc-shaped groove 324, and the second carrying platform 34 drives the long-focus camera 2 to do conical swing motion relative to the first carrying platform 32.

In this embodiment, the first motor is located above the second mounting platform 34, so that the second mounting platform 34 is connected to the moving rod conveniently, the second mounting platform 34 is provided with a connecting column 341, the top end of the connecting column 341 is provided with a pin, the moving rod is provided with a pin hole matched with the pin, and the pin is inserted into the pin hole to realize connection; meanwhile, in order to further strengthen the firmness of the connecting column 341 and the moving rod, the pin hole is a through hole, the bolt penetrates through the pin hole, and the part of the bolt extending out of the pin hole is connected to the moving rod through a buckle.

Optionally, the eye tracking imaging system further includes a second limiting member 37, the second driving member 35 includes a second motor, a rotating shaft of the second motor is in threaded connection with the telescopic member 36, and the second limiting member 37 is located on a moving path of the telescopic member 36 to limit the second limiting member 37 from disengaging from the rotating shaft of the second motor.

Specifically, the second position-limiting member 37 is located near the free end of the rotating shaft of the second motor, and when the sliding sleeve 361 of the telescopic member 36 moves to the free end of the rotating shaft of the second motor, it is blocked by the second position-limiting member 37, so that the sliding sleeve 361 of the telescopic member 36 does not disengage from the rotating shaft of the second motor. As shown in fig. 2, the second limiting member 37 is in a zigzag shape, one end of the second limiting member 37 is fixed on the mounting plate 322 of the second mounting platform 34, the other end of the second limiting member 37 is located at the right side of the rotating shaft of the second motor, and a gap exists between the portion of the second limiting member 37 located at the right side of the rotating shaft of the second motor and the rotating shaft of the second motor, and the distance of the gap is smaller than the depth of the threaded hole of the sliding sleeve, so that the second limiting member 37 does not hinder the rotating shaft of the second motor from moving.

So set up, under the effect of second locating part 37, can limit the stroke of sliding sleeve, avoid the sliding sleeve to break away from the pivot of second motor.

Optionally, the eye tracking imaging system further includes a fixing base 4, an installation base 7 and a wide-angle camera 1, the wide-angle camera 1 is configured to obtain facial images of each person in a dynamic and large-field-of-view multi-information environment in real time, an installation groove 42 is formed in the fixing base 4, the installation base 7 and the motion platform 3 are both disposed in the installation groove 42, and the wide-angle camera 1 is installed on the installation base 7; the lateral wall of fixing base 4 be equipped with the communicating formation of image mouth 41 of mounting groove 42, just wide angle camera 1 with long burnt camera 2 arrives the optical path difference of formation of image mouth 41 is zero.

In this embodiment, the shape of the fixing base 4 is not limited, it may be square or circular, as shown in fig. 1 and 4, the shape of the fixing base 4 is rectangular, a mounting groove 42 is formed in the fixing base 4, the wide-angle camera 1, the telephoto camera 2 and the motion platform 3 are all disposed in the mounting groove 42, specifically, the first driving member 31 of the motion platform 3 is fixed to the bottom of the mounting groove 42 through a screw, the first carrying platform 32 of the motion platform 3 is rotatably connected with the side wall of the mounting groove 42, specifically, the first carrying platform 32 is provided with at least one connecting edge 323, the connecting edge 323 is rotatably connected with the side wall of the mounting groove 42 through a rotating shaft, and the mounting frame 7 is connected with the side wall of the mounting groove 42 through a screw. Meanwhile, the wide-angle camera 1 and the telephoto camera 2 are arranged in the mounting groove 42 side by side along the width direction (the direction of the X axis) of the fixing base 4, and the lens of the wide-angle camera 1 and the lens of the telephoto camera 2 are in the same horizontal plane. The side wall of the fixed seat 4 is provided with an imaging port 41 communicated with the mounting groove 42, and the optical path difference from the wide-angle camera 1 and the telephoto camera 2 to the imaging port 41 is zero.

In this embodiment, eye movement tracks formation of image still includes lens subassembly 8, and formation of image mouth 41 passes through lens subassembly 8 and transmits light to telephoto camera 2 and wide angle camera 1 respectively, and specifically, lens subassembly 8 includes transflective 81, and the transflective 81 slope of transflective sets up in formation of image mouth 41 department, and speculum 82 transmits the light that transflective 81 reflect to telephoto camera 2, and the light that reflector 82 passes transflective 81 transmits to wide angle camera 1. As shown in fig. 5, the lens assembly 8 further includes a plurality of reflectors 82, light reflected by the transflective lens 81 is transmitted to the telephoto camera 2 through at least one reflector 82, and light transmitted by the transflective lens 81 is transmitted to the wide-angle camera 1 through at least one reflector 82. Therefore, under the action of the lens assembly 8, the positions of the wide-angle camera 1 and the telephoto camera 2 can be reasonably arranged, so that the size of the whole device is reduced.

In this embodiment, the transflective mirror 81 and the reflector 82 are fixed in the mounting groove 42 by a snap fit, or are adhered to the mounting groove 42.

Optionally, the eye tracking imaging system further comprises a control assembly 5 and a cover 6, wherein the control assembly 5 is disposed on the fixed base 4, and the control assembly 5 is electrically connected with the wide-angle camera 1, the tele-camera 2 and the motion platform 3; the sealing cover 6 is covered on the fixed seat 4, and the control component 5 is positioned inside the sealing cover 6.

In this embodiment, as shown in fig. 1, the control component 5 includes a raspberry pi and a switch 52, and the raspberry pi is electrically connected to the wide-angle camera 1, the telephoto camera 2, the motion platform 3, and the switch 52, respectively. As shown in fig. 1 and 4, the cover 6 covers the fixing base 4, and the control component 5 is located inside the cover 6, thereby protecting the control component 5.

During operation, the eye image information is reflected to the reflecting mirror 82 through the semi-reflecting and semi-transmitting mirror, then the reflecting mirror 82 reflects to the telephoto camera 2, the obtained eye image information is transmitted to the telephoto camera 2 in real time, meanwhile, the eye image is transmitted to the reflecting mirror 82 through the semi-reflecting and semi-transmitting mirror, the eye image information is transmitted to the wide-angle camera 1 through the reflecting mirror 82 in real time, the optical distance from the eyes to the telephoto camera 2 is the same as that of the wide-angle camera 1, and the eye image information is transmitted in real time synchronously. When needed, the raspberry sends command pulses to the first motor and the second motor of the motion platform 3, controls the telephoto camera 2 to swing to a target position, and finally the telephoto camera 2 obtains a high-pixel eyeball image through automatic focusing.

In the description herein, references to the description of the term "an embodiment," "one embodiment," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or implementation is included in at least one embodiment or implementation of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims (10)

1. An eye tracking imaging system, comprising:

the long-focus camera (2) is used for acquiring an eye micro-feature image in real time;

the motion platform (3) comprises a first motion assembly and a second motion assembly, the first motion assembly is in driving connection with the telephoto camera (2) and is used for keeping the focal length of the telephoto camera (2) fixed and driving the telephoto camera (2) to rotate around a first direction so as to adjust the lens pitch angle of the telephoto camera (2); the second motion assembly is in driving connection with the telephoto camera (2) and used for keeping the focal length of the telephoto camera (2) fixed and driving the telephoto camera (2) to rotate around a second direction so as to adjust the transverse roll angle of the lens of the telephoto camera (2).

2. The eye-tracking imaging system according to claim 1, characterized in that the motion platform (3) further comprises a first mounting platform (32), the tele camera (2) being arranged on the first mounting platform (32); the first motion assembly comprises a first driving part (31), the first driving part (31) is in driving connection with the first carrying platform (32) and used for driving the first carrying platform (32) to rotate around the first direction.

3. The eye tracking imaging system according to claim 2, further comprising a first limiting member (33) and a connecting member (321), wherein the first driving member (31) comprises a first motor, one end of the connecting member (321) is slidably connected to the first carrying platform (32), the other end of the connecting member (321) is provided with a movably connected connecting buckle (3213), a rotating shaft of the first motor is threadedly connected to the connecting buckle (3213), and the first limiting member (33) is located on a moving path of the connecting buckle (3213) to limit the connecting buckle (3213) from disengaging from the rotating shaft of the first motor.

4. The eye-tracking imaging system of claim 2, wherein the motion platform (3) further comprises a second mounting platform (34), the second motion assembly being disposed on the second mounting platform (34); the second carrying platform (34) is movably arranged on the first carrying platform (32); the telephoto camera (2) is arranged on the first carrying platform (32) through the second carrying platform (34); the second motion assembly comprises a second driving piece (35), the second driving piece (35) is in driving connection with the second carrying platform (34) and used for driving the second carrying platform (34) to rotate around the second direction relative to the first carrying platform (32).

5. The eye tracking imaging system according to claim 4, wherein an arc-shaped groove (324) is formed in the first carrying platform (32), a guide block is arranged on an end face, facing the first carrying platform (32), of the second carrying platform (34), the guide block is slidably arranged in the arc-shaped groove (324), and a connecting line between a circle center of the arc-shaped groove (324) and a lens central point of the telephoto camera (2) is perpendicular to a radius of the arc-shaped groove (324) and a lens central axis of the telephoto camera (2), respectively.

6. The eye tracking imaging system according to claim 5, wherein the second motion assembly further comprises a telescopic member (36) capable of being extended and retracted, one end of the telescopic member (36) is drivingly connected with the second driving member (35), and the other end of the telescopic member (36) is connected with the second carrying platform (34);

when the second driving piece (35) drives the second carrying platform (34) to move through the telescopic piece (36), the telescopic piece (36) is suitable for being lengthened or shortened so that the guide block can slide in the arc-shaped groove (324).

7. The eye-tracking imaging system according to claim 6, further comprising a second limiting member (37), wherein the second driving member (35) comprises a second motor, a rotating shaft of the second motor is in threaded connection with the telescopic member (36), and the second limiting member (37) is located on a moving path of the telescopic member (36) to limit the second limiting member (37) from disengaging from the rotating shaft of the second motor.

8. The eye tracking imaging system according to claim 1, further comprising a fixing base (4), a mounting frame (7) and a wide-angle camera (1), wherein the wide-angle camera (1) is used for acquiring facial images of everyone in a dynamic and large-field-of-view multi-information environment in real time, a mounting groove (42) is formed in the fixing base (4), the mounting frame (7) and the motion platform (3) are arranged in the mounting groove (42), and the wide-angle camera (1) is mounted on the mounting frame (7); the lateral wall of fixing base (4) be equipped with communicating formation of image mouth (41) of mounting groove (42), just wide angle camera (1) with telephoto camera (2) arrives the optical path difference of formation of image mouth (41) is zero.

9. Eye tracking imaging system according to claim 8, further comprising a control assembly (5), wherein the control assembly (5) is arranged on the holder (4), and wherein the control assembly (5) is electrically connected to the wide-angle camera (1), the tele-camera (2) and the motion platform (3).

10. Eye tracking imaging system according to claim 9, further comprising a cover (6), wherein the cover (6) is housed on the holder (4), and wherein the control unit (5) is located inside the cover (6).

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