CN103429143B - Optical measuring device and system - Google Patents

Abstract

nullThe present invention relates to a kind of optical measuring device (1)，For capturing at least one parameter of at least one eye of the tester (31) dressing described optical measuring device (1)，Described optical measuring device (1) includes framework (4)，It is connected at least one framework insert (8l of framework (4)，8r)，And at least one capturing unit (3l，3r)，Wherein said framework (4) is designed to that described optical measuring device (1) is fixed to the head of tester (31) so that at least one framework insert (8l，8r) it is positioned at least one eye (10l of tester (31)，10r) be previously used at least one eye (10l，10r) at described at least one eye (10l，At least one view direction on optical axial (K) 10r)，And described capturing unit (3l，3r) it is designed to capture at least one eye (10l optically，At least one parameter 10r)，Wherein，Described capturing unit (3l，3r) be positioned in such a way that (a) is used for capturing at least one eye (10l，The optical path of at least one parameter 10r) is by framework insert (8l，8r) foreclose.

Description

Optical measuring device and system

Technical field

The present invention relates to a kind of optical measuring device, dress described optical measuring device for capturing At least one parameter of at least one eye of tester, described optical measuring device includes frame Frame, is connected at least one framework insert of framework, and at least one capturing unit, wherein Described framework is designed to be fixed to described optical measuring device the head of tester so that extremely A few framework insert at least one eye on the optical axial of at least one eye described At least one view direction be positioned at before at least one eye of tester, described capture is single Unit is designed to capture optically at least one parameter of at least one eye.The invention still further relates to one Plant the system including this optical measuring device.

Background technology

From use wear-type eye tracks device known in the art.US RE39,539E discloses Equipment for the eye motion of monitor.System includes the framework being worn on the head of people, at frame It is used for the transmitter array of the eyes direct light towards people on frame and is used for detecting on framework The sensor array of the light of spontaneous transmitter array.Sensor detection by the various piece of eyes or its The light of Eyelid reflex, thus produces and represents that the output when reflecting part of eyes is covered by eyelid is believed Number.Described equipment allows the levels of drowsiness of monitor.

US6,163,281 disclose the system and method that a kind of motion utilizing human eye carries out exchanging, Including for towards the emitter of eyes direct light, for detecting the sensing of the light sent from emitter Device and be coupled to sensor for being converted into by the light intensity signal successively received from sensor Data stream and/or convert the signal into the processor of intelligible information.

US2004/0196433A1 discloses the eyes of a kind of motion for monitoring user eyes Tracing system, including a camera and scene camera, for supply the image representing user eyes and The interlacing scan electric video data of the image of the scene observed by user.It addition, described system System comprises frame grabber and light spot position module, described frame grabber for digital video data and Processing channel for eyes and contextual data are divided into two, described luminous point location module is for from regarding Frequency is according to determining the reference irradiating user eyes by point source and formed on user eyes The position of luminous point.Described system also includes pupil position module, for determining staring of user Line.

WO2010/83853A1 discloses fixation point detecting system, has and is placed in test scene One or more infrared sources as a reference point, test object at least one pair of eye dressed Mirror and for calculate people fixation point data process memory element.Glasses include being adapted to detect for From the IR signal of at least one IR signal source and the image sensing of generation IR signal source trace signals Device, the gaze-direction being adapted to determine that test object personnel and the eye tracks of generation eye tracks signal Unit and be suitable to obtain test scene picture camera unit.

WO2004/066097A2 discloses and shows at a kind of focus for staring at user The eye tracking system of video screen pointer.Described system includes focusing on the phase on user eyes Machine, be connected to the camera support member for the relative position of the pupil of fixed camera to user, with And there is CPU and the computer at eye tracks interface.Being determined by the center of eyes, video shows Pointer on screen can be displayed at focus.WO2004/066097A2 discloses one Optical measuring device as described in the preamble according to the application.

US2010/0220291A1 discloses a kind of eye tracking system, has transparent lens, extremely A few light source and multiple photodetector.Transparent lens is suitable to be arranged on ocular vicinity.At least one Light source is arranged in transparent lens and is configured to launch light towards eyes.At least one light source passes through Visible ray.Multiple photodetectors are arranged in transparent lens and are configured to receive from least one light Source is launched and by the light of eye reflections.Each photodetector is through visible ray and is configured to connecing Supply output signal when receiving the light by eye reflections.

Known wear-type eye tracker suffers following shortcoming: by anti-on the eyes of tester The environment veiling glare penetrated may negatively affect eye tracks function.The eyes of monitoring tester Camera can keep following the trail of the eye feature of eye motion and being shone by environment being specifically designed to Make a distinction between the feature of the such as reflection etc. caused by bright condition.Generally, radiation situation is not It is well defined.Eye tracks is generally by environmental condition and the not phase of interference tracking mechanism reliably The veiling glare hoped ties down.It is thus known that wear-type eye tracks device frequently suffer from limited essence Exactness and robustness.In order to improve detection degree of accuracy, need time-consuming and be difficult to the program calibrated.

Summary of the invention

It is an object of the present invention to provide a kind of optical measuring device and system, its permission more may be used At least one parameter of eyes is characterized by ground capture.

According to task of the present invention by the light having according to the feature described in Patent right requirement 1 Learn measurement apparatus and there is the system according to the feature described in Patent right requirement 15 solve.This Bright advantageous embodiment is independent claims and the theme of described description.

Optical measuring device according to the present invention is for capturing the test dressing described optical measuring device At least one parameter of at least one eye of personnel.Described optical measuring device includes framework, even It is connected at least one framework insert of framework, and at least one capturing unit, wherein said frame Frame is designed to be fixed to described optical measuring device the head of tester so that at least one Framework insert at least one eye on the optical axial of at least one eye described at least One view direction is positioned at before at least one eye of tester, and described capturing unit is set Count at least one parameter capturing at least one eye optically.Catch described in optical measuring device Obtain unit to be arranged such that, for capturing the light ways for education of at least one parameter of at least one eye Footpath does not include framework insert or is foreclosed by framework insert.

So, framework insert and capturing unit decouple optically.Two elements may be used for difference Purpose, it is not necessary to the function that is mutually related is provided.Specifically, the optical path of capturing unit did not both have It is conducted through framework insert, does not the most include the table of the framework insert as reflective optical devices Face.Therefore, the optical properties of framework insert can be designed, without considering optical path Requirement.As such, it is possible to provide new optical design to select, it allows at least one ginseng to eyes Relatively reliable and the effective capture of number.The optical path of capturing unit is not bad by framework insert Change.

Framework insert can be can be inserted into and/or be connected to optical measuring device framework appoint What element.It can be transparent or opaque.Framework insert can be (such as by Material in it) be different from any element of framework, described framework insert be fixed to framework or Framework can be connected to.Capturing unit can include at least one camera.Specifically, described at least The optical axial of one eye can be the gaze-direction of eyes.The optical path of capturing unit or inspection Survey path do not include framework insert or foreclosed by framework insert, i.e. framework insert is not It it is a part for the optical path of capturing unit.If describing light on especially in terms of geometric optics Ways for education footpath, then the light characterizing optical path does not has common point with framework insert.

Advantageously, framework insert is arranged such that, is fixed to test at optical measuring device During the head of personnel, determine viewing by the line of the point of framework insert Yu the eyes of tester Path, and described capturing unit is arranged such that at least one parameter for capturing eyes Optical path and described viewing path include the eyes as the optical element being uniquely used in conjunction with.Tool Body ground, framework insert is clearly not the optics unit being used in conjunction with by eyes and captured unit Part.Specifically, the present embodiment will be understood in the aspect of ray optics.Specifically, test person The sight line of member is directed on framework insert or by framework insert, and described sight line and institute State the sight line of capturing unit not by using common optical element fully to decouple.Described embodiment Ensure that framework insert is used individually for affecting the visual field of tester by affecting its sight line. On the other hand, it is possible to use capturing unit directly observes eyes, and not by the optics of framework insert Characteristic negatively affects.

Advantageously, described optical path fully extends in a space, and described space is surveyed at optics When amount device is fixed to the head of tester, described framework insert towards described at least one Extend on the side of eyes.So, the optical path of capturing unit can be suitable by framework insert Block.Depend on the characteristic of framework insert, can be significantly improved for capturing eyes extremely The quality of a few parameter.Specifically, framework insert can stop from optical path extension logical The less desirable light in the space crossed.By framework insert, it is possible to prevent undesired reflection and miscellaneous Astigmatism arrives capturing unit.

Advantageously, at least one framework insert described has at least one optical properties.Specifically Ground, at least one framework insert described is configured to optical element, is especially optics Lens and/or diffraction optical element.Especially, framework insert can include at least one eyes glass Glass eyeglass.So, framework insert can improve tester's optical perception to environment.Permissible Improve the sight line of tester.On the other hand, the optical properties of framework insert can be chosen Become so that the quality being captured at least one parameter by capturing unit is enhanced.

In one embodiment, this can be implemented so that at least one framework insert at least exists Visible spectrum on wave-length coverage is configured to neutral-density filter optically.In Property density filters reduces light intensity, especially at visible spectrum on wide wave-length coverage In.So, the pupil of eyes can become wider, although the irradiation condition in environment does not changes. If the captured parameter of eyes is pupil diameter, then bigger pupil diameter generally ensures to lead to Cross capturing unit improvement and relatively reliable detection.Therefore, including neutral-density filter Framework insert improves by capturing unit obtainable detection quality.Moreover, it is also possible to avoid by The overexposure of the image of capture, thus produce better image quality.

In another embodiment, at least one framework insert described is configured to optical spectra optical filtering Sheet, is especially configured to high-pass filter, low pass filter, bandpass filter or notch filtering light Sheet.Such optical filter ensure that the light of only special spectrum scope can arrive after framework insert The eyes in face.It is, therefore, apparent that the light negatively affecting the capture ability of capturing unit can be hindered Gear.Therefore undesired reflection and less desirable spuious in particular range of wavelengths it is possible to prevent on eye Light.The capture quality of at least one parameter described is the highest.

Preferably, described capturing unit can be at least optics in predetermined spectral region at one Sensitive.Specifically, described spectral region is can be predetermined so that its with described at least The optical properties of one framework insert is associated.Such as, capturing unit can be designed to so that Obtaining it is optical sensitive in the spectral region stopped by framework insert.Inserted by framework The light of part is thus without the capture ability negatively affecting capturing unit.Realize optics solution completely Coupling.For capturing unit, generate the dimmed space after framework insert, thus provide The capture to eye parameters almost without background.Specifically, can be with Selection Framework insert and catching Obtain the attribute of unit, so that framework insert is the most fully transparent in visible wavelength range , therefore allow the without hindrance visual field to environment, and capturing unit is optical sensitive wherein Wave-length coverage in be the most fully opaque.

Advantageously, described optical measuring device includes at least one illumination unit, fills in optical measurement When putting the head being fixed to tester, at least one illumination unit described is configured to be transmitted in can be pre- Radiation in the spectral region first determined so that described in be radiated to partially to be mapped to described at least On one eye.Eye can be irradiated with the light that can be captured by capturing unit after described illumination unit Eyeball.Can generate specific reflection on eyes and/or irradiate pattern (structured illumination), it can be helped Capturing unit is helped to capture at least one parameter.In a preferred embodiment, it is configured to optical spectra filter The framework insert of sheet, can predetermined spectral region be optical sensitive capturing unit, And be transmitted in can the feature of illumination unit of light in predetermined spectral region combined.Frame It is preferably designed to after the optical spectra optical filter of frame insert so that it is at capturing unit and photograph Penetrate unit optimised can predetermined spectral region be the most opaque.Preferably Ground, at least one framework insert described can the absorbance in predetermined spectral region be less than 40%, preferably smaller than 20%.Afterwards, can produce after framework insert diverse Luminous environment, it allows the capture of the optimization at least one parameter described by capturing unit.Light Learn condition improved capture and the detection efficiency of decoupling.

In one embodiment, illumination unit and framework insert are configured so that for irradiating list Unit launch radiation can predetermined spectral region and its middle frame insert substantially opaque Can predetermined spectral region can change in the way of being associated.Afterwards can be according to environment Irradiation condition adjusts detection scheme.

Advantageously, at least one framework insert described at least partially in described can predetermined light Spectral limit has more than 40%, be preferably more than the reflectance of 60%.So, fully suppression is latent Bias light in noise capture process.

In a preferred embodiment, described can predetermined spectral region in infrared wavelength range In.Afterwards, framework insert is transparent in limit of visible spectrum, mostly stops simultaneously Infrared light.Owing to human eye is insensitive for infrared light, thus framework insert look for Tester is fully transparent, and does not hinder his vision.On the other hand, it will at framework The environment of IR veiling glare it is produced without, for effectively capturing by infrared radiation list after insert The desired reflection that unit is generated on the eyes of tester.

Advantageously, described capturing unit be disposed on framework so that, solid at optical measuring device When determining the head to tester, capture the described optics of at least one parameter of at least one eye Path extends on the straight line from described capturing unit to eyes.Specifically, optical path does not comprises Any optical element, does not the most comprise reflective optical devices.Afterwards, capturing unit can be direct Observe eyes, and do not disturbed by optical element.

Alternately, optical measuring device can include optical deflection element which, described optical deflector element Part and described capturing unit be disposed on framework so that, optical measuring device be fixed to test During the head of personnel, for capturing the described optical path of at least one parameter of at least one eye Eyes are extended to via described deflecting element from described capturing unit.By changing the side of optical path To, there is the probability that the many for being positioned on optical measuring device by capturing unit is different. Realize high integration and compact measurement apparatus.The light ways for education can be adjusted by alignment deflecting element Footpath, without the position changing capturing unit.The capture list with low numerical aperture can be used Unit.

Advantageously, described optical measuring device is configured such that, when being fixed to dress eyes mirror During the head of the tester of sheet, at least one framework insert described is positioned at the eye of tester Before at least one eyes glass lens of eyeball eyeglass.Optical measuring device can be by needs afterwards The tester of chastening ophthalmic lens dresses to improve its vision.

Advantageously, framework insert is configured to include at least one carrier element and at least one optics The element of the multipart of element, the most specifically, optical element interacts with capturing unit, So that its allow at least one eye described in capturing unit optical acquisition at least one parameter and/or Support that it does so.Specifically, optical element can be in the wave-length coverage that capture element is sensitive Reflexive.Advantageously, at least one optical element described is configured to reflecting mirror and/or reflection is coated with Layer.Specifically, carrier element can be transparent ophthalmic lens, and optical element can be eyes Reflective coating on eyeglass.

Advantageously, at least one captured parameter described about at least one eye orientation and/or Position and/or catacleisis and/or pupil diameter and/or limbus characteristic and/or sclera characteristic and/or Iris characteristic and/or vessel properties and/or corneal nature.Especially, at least one captured parameter May be about corneal radii (above, below), eyeball radius, pupil center to CC Distance, the distance of CC to eyeball center, the connecting portion of pupil center to cornea and sclera Point distance at center of (limbus), cornea refractive refractive index, corneal refractive power, Vitreous humour Refractive index, crystalline lens are to eyeball center with to CC with to the distance of corneal vertex, crystalline lens Refractive index, visual axis direction, optical axial direction, pupil axis (cutting aberration axis) side To, direction of visual lines, astigmatism (diopter) and the deflection of smooth and precipitous axis, iris straight Footpath, pupil diameter (pupil long axis and minor axis), pupil region, limbus (limbus) Long axis and minor axis, eyes rotate, distance, eyes vergence in eye, receive in eyes/ Statistical value in abduction and eyes prominent/depression on statistical value.Optical measuring device can after As eye tracks device.

Advantageously, described framework insert includes display unit.Described display unit can be transparent , partially transparent or opaque.

Advantageously, when optical measuring device is fixed to the head of tester, described display unit On display can be by least one eye optical ground capture of described tester.This is implemented Example allows to capture at least one parameter of the eyes of described tester, and tester sees simultaneously See being particularly shown on display unit.Although showing customizing messages, but it is because for capturing The optical path of at least one parameter does not include display unit, so capturing unit is not by described aobvious Show and negatively affect.Optics decoupling allows the unobstructed observation to eyes by capturing unit. Capturing unit captures the information of the eyes about tester specially and does not capture the most on the display unit The information of display.

Optical measuring device can be eyeglass device.

Include according to optical measuring device of the present invention according to a kind of system of the present invention and At least two framework insert, described at least two framework insert is in their transmission and/or reflection Difference on attribute, wherein said framework is arranged such that described at least two framework insert energy Enough removably it is connected to described system.Depend on the measuring condition in environment and optical condition, permissible Capture ability for the optimization of capturing unit selects suitable framework insert.By changing framework Insert reconfigures system and can be readily accomplished by tester oneself.Optical measuring device it After can according to change condition be adjusted neatly.Under various conditions, it is possible to achieve optics is surveyed The extraordinary capture ability of amount device.

In an aspect of invention, the method paid close attention to allows to change not in optical measuring device Same framework insert.Optical measuring device and at least two framework insert is included in system In first configuration, the first framework insert at least two framework insert is connected to optical measurement The framework of device.First framework insert has the first transmissison characteristic.When ambient lighting conditions changes Time, after the second framework insert at least two framework insert becomes more suited for changing Luminescent condition, because its use improves at least one eye to tester in principle The capture of at least one parameter.A step according to described method, tester can select now Select the second framework insert, remove from the framework of optical measuring device the first framework insert and It is replaced with the second framework insert.Be connected to after second framework insert framework and The capture ability under luminescent condition after change is enhanced.Ambient lighting conditions according to change is permissible Regulate optical measuring device neatly.It is alternatively possible to for different the catching of optical measuring device Obtain principle of work and power and use different framework inserts.

Another aspect of the present invention, is used for capturing the described glasses of wearing for eyeglass device about one At least one parameter of at least one eye of the tester of device, described eyeglass device includes frame Frame, is connected at least one framework insert of framework, and at least one capturing unit, wherein Described framework is configured to be fixed to described eyeglass device the head of tester, so that at least One framework insert is at least one viewing on the optical axial of described eyes of described eyes Direction is positioned at before at least one eye of tester, and described capturing unit is configured to optics Ground captures at least one parameter of at least one eye, and wherein said framework insert includes that display is single Unit.

Advantageously, when eyeglass device is fixed to the head of tester, on described display unit Display can be by least one eye optical ground capture of described tester.

Advantageously, the framework insert of described eyeglass device includes eyes glass lens.

The advantageous embodiment of the optical measuring device according to the present invention will be considered as also according to the present invention System and the advantageous embodiment of eyeglass device according to other aspect.

The other feature of the present invention is derived from the description of claim, accompanying drawing and accompanying drawing.In description All features described before in and the combination of feature and with the description of accompanying drawing and/or the most in the accompanying drawings Feature and the combination of feature that shown feature is described further cannot be only used in each case In pointed combination, but also can be used in combination with different or be used alone.

Accompanying drawing explanation

With reference now to single preferred embodiment and the present invention is described in detail with reference to the accompanying drawings,.It is illustrated below Go out these:

Figure 1A is the front view of eyeglass device according to embodiments of the present invention；

Figure 1B is the side view of the eyeglass device of Figure 1A；

Fig. 1 C is the top view of the eyeglass device of Figure 1A；

Fig. 1 D is the perspective view of the eyeglass device of Figure 1A；

Fig. 2 is the rearview of eyeglass device；

Fig. 3 is the diagrammatic rear view of eyeglass device, wherein eye camera utilize deflecting element by its Optical path is directed on eyes；

Fig. 4 is the side view of the eyeglass device of the orientation showing schematically a camera；

The schematic diagram of the single electronic unit that Fig. 5 is comprised by eyeglass device；

Fig. 6 A is to represent the symbol with the big parallax obtained according to the optical measuring device of prior art Number picture；

Fig. 6 B is to show to represent, with eyeglass device according to embodiments of the present invention, the symbol not having parallax Picture；

Fig. 7 is parallax model；

Fig. 8 is to compare according to prior art and the parallax of measurement apparatus according to embodiments of the present invention View；

Fig. 9 A is by the first visual field acquired in scene camera；

Fig. 9 B is the second visual field obtained by scene camera；

Figure 10 A is the diagrammatic side view of eyeglass device, and wherein the optical path of eye camera is from eye phase Machine extends to the straight line of eyes；With

Figure 10 B is the diagrammatic side view of eyeglass device, and wherein the optical path of eye camera is from eye camera Eyes are extended to via reflecting mirror.

Detailed description of the invention

In the accompanying drawings, identical element or there is the element of identical function be given identical reference mark Note.Fig. 2,3 and 4 demonstrate have cartesian coordinate system and the phase of vertical axis x, y and z Same referential.

Figure 1A to 1D demonstrates optical measuring device, and it is respectively provided with eyeglass device 1 or eyes chase after The form of track device.Eyeglass device 1 is designed such that personnel can be worn on its head On, as common a pair glasses.It framework 4 including there are two side lever 5l and 5r, Eyeglass device 1 is supported on the ear of the personnel dressing it by said two side lever.It addition, glasses Device 1 is kept overhead suitable position by nose support 7.Main frame has concrete width W1 and height h.Its length l depends on the length of side lever 5l and 5r.As seen in fig. 1 c , side lever 5l and 5r is hinged to the front portion of framework 4 so that between side lever 5l and 5r away from Can be exaggerated or shorten from w2 and (see the dotted line side lever to side lever 5l in fig. 1 c to join Put).

Alternately, optical measuring device can be not designed to the form of a pair glasses of routine, and It is to be designed such that its helmet (shape being similar to there is face shield (forming framework insert) Become framework).

Above nose support 7 in framework 4, it is mounted with scene camera 2.It can be connected to or one Body is integrated in framework 4.Utilize scene camera 2, in fact can capture as existed by tester Similar visual field as being seen when dressing eyeglass device 1.In the bottom of framework 4, glasses Device 1 comprises two eye camera 3l and 3r.When eyeglass device 1 is worn, eye can be passed through Camera 3l and 3r captures human eye, and this camera 3l and 3r is integrated into framework 4 with applicable angle In.Eye camera 3l and 3r is designed to watch respectively left eye and the right eye of people, i.e. captures the spy of human eye Levy.

Framework 4 includes two openings, and said two opening is filled with and thus form framework insert Eyeglass lens 8l and 8r.Caused by the picture acquired in scene camera 2 and eye camera 3l and 3r Signal, described signal one or several pretreatment unit 6 in being integrated into side lever 5l and 5r In processed.

Fig. 2 shows the inner side view of eyeglass device 1.Eyeglass lens 8l and 8r is encapsulated along frame part Edge, with the several light emitting diodes in the location (LED) 9 that is circular layout.When eyeglass device 1 is worn by people Dai Shi, these LED9 can irradiate the eyes of tester in a limiting fashion.LED9 will lead Cause for the reflection (corneal reflex) on the eyes of tester of all possible gaze angle.This A little reflections can be detected by eye camera 3l and 3r and may be used for eye tracks.

LED9 can follow specific time pattern, gating characteristics or spatial variations by individually, become Group ground or all switching to together open and close.The switch of different LED9 or LED9 groups Switching frequency can change.The LED9 of specific group can accurately be closed at other LED9 organized Open when closing.Concrete space and moment relational pattern can be about switchings and therefore about irradiation Characteristic is by reality.So, the eyes that can be easily identified by eye camera 3 can generate Reflection graphic patterns.

There is the integral installation of most important electronic unit join and figure 5 illustrates.Limit camera 3l and 3r leads to The cable 14 crossing 100mm length is connected to specific phase organic electronic device 15.Especially, camera 3l Only include basic electronic unit with 3r, and their primary electronic component is positioned at phase organic electronic dress In putting 15.So, basic " optics " of camera 3l and 3r can fill relative to phase organic electronic Basic " electronic unit " put in 15 remotely positions.Can be by flexibility after described both parts PCB cable 14 connects.So, optical pickocff and the basic ministry of electronics industry in camera 3l and 3r Part defines the least and high compact entirety, and the substantial amounts of electronic unit in electronic installation 15 Can be placed on other positions of more large-scale surface-mounted integrated circuit.Electronic installation 15 is even Being connected to pretreatment unit 16, described pretreatment unit can process from eye camera 3l and 3r Signal.Pretreatment unit 16 can with in side lever 5l and 5r being positioned at eyeglass device 1 Pretreatment unit 6 identical.Pretreatment unit 16 is connected to usb hub (hub) 19.The LED9 being arranged in framework 4 defines the annular being arranged to around eyeglass lens 8l and 8r First and second IR LED chains 21 and 22 of configuration.IR LED chain 21 and 22 is connected to IR LED constant current source 20, it is also connected to usb hub 19.Usb hub 19 is additionally used Make the power supply of IR LED constant current source 20.The LED9 of IR LED chain 21 and 22 can be with coverlet Solely switch to open and close.In order to realize this, they can be mono-to each LED9 to implement The parallel network that solely TURP changes is connected to IR LED constant current source 20.

Usb hub 19 is connected to pretreatment unit 26 via USB2.0 cable 25.? In pretreatment unit 26, pretreated signal is finally analyzed in personal computer 27, institute State personal computer and include recorder device 28.Form the other auxiliary of interface on eyeglass device 1 Help/synchronous port 13 can also be connected to usb hub 19.Auxiliary/synchronous port 13 can be used Make to synchronize with other electronic installations or for triggering the interface of parallel data acquisition.Electronic installation 15, pretreatment unit 16, usb hub 19 and IR LED constant current source 20 are positioned at altogether On same printing board PCB 23.

Being similar to this structure, scene camera 2 is also connected to electronic installation via 100mm cable 14 15.In this case, electronic installation 15 is positioned on the second printing board PCB 24, and it is also Including pretreatment unit 17.Pretreatment unit 17 can be believed based on according to DaVinci numeral The electronic installation of number processor (DSP).It comprises and receives from electronic installation 15 for coding The mpeg encoder 18 of signal.Mike 12 can also be connected to pretreatment unit 17. The pretreatment unit 17 being positioned on PCB24 is connected to usb hub 19.So, by Process signal acquired in scene camera 2 is finally analyzed in personal computer 27.

Pretreatment unit 6,16,17 and 26 can compress by two limit camera 3l and 3r with And at least one in produced three image stream of scene camera 2.Herein, different replacements Scheme is feasible.Pretreatment unit can only compress the image stream of a camera, and each phase Facility have the pretreatment unit of himself.Alternately, single pretreatment unit can compress The image stream of all cameras.It addition, pretreatment unit can be configured to via system interface and right The software answered manages band by regulation resolution, region interested, frame rate and compression parameters Wide.Pretreatment unit can be designed to synchronously trigger the Image Acquisition of camera.They are permissible Thering is provided time labelling for each image being acquired, it may be used for synchronizing several or institute off-line There is camera data stream.

Pretreatment unit can be positioned on the surface-mounted integrated circuit of camera or is positioned at head and installs At part or the single surface-mounted integrated circuit of upper (such as in side lever 5l or 5r of eyeglass device 1) Go up or in the single housing dressed by tester 31, the most on tape.

Eyeglass device 1 can also include satellite interface, and it allows to obtain from external sensor in real time Data.Such sensor can be that biometric sensor (includes but not limited to EEG, ECG Deng) or attitude transducer (including but not limited to accelerometer, magnetometer, gyroscope etc.).Afterwards may be used With by the data stream of external sensor and from camera 2, the synchronization of data streams acquired in 3l and 3r.Separately Outward, it is provided that by external clock or trigger signal, it can be used by external sensor so that it Self with described system synchronization.Can be by being integrated into from the bandwidth of the data acquired in interface The mode stating the airborne process resource in its specific record unit 28 in system is reduced or presses Contracting.

Eye camera 3l and 3r may be suitable for visible ray or near infrared light.They can be relative to vertically Centrage be symmetrically positioned, the face of user is split into two halves by this vertical centrage.Eye phase Machine 3l and 3r can be respectively positioned at the front of and below of eyes 10l and 10r, such as at a pair The lower edge of mirror lens 8l and 8r, points to eyes 10l and 10r with the angles of 30 ° to 50 °, and And be arranged in framework 4 with the angle of 30 ° to 50 °.In an embodiment, eye camera 3l and 3r exists Near-infrared is sensitive.

Scene camera 2 can be positioned on vertical centrage, and this vertical centrage is at framework 4 Nose bridge at the face of user is split into two halves.Alternately, its can also be positioned at the helmet, Cap or the edge of headband or near.Scene camera 2 can have HD (fine definition) and/or Adjustable resolution of at least 720p (1280 × 720 pixel) and grasping under 30Hz or 60Hz Make.It can be mounted along the orientation of landscape or portrait.It addition, it may be installed so that it Orientation can change to portrait orientation (camera roller) and also side pointed by camera from landscape To (camera head).

Replacing single scene camera 2, eyeglass device 1 can also include a pair scene camera, wherein Each scene camera can orient in portrait mode of figure or landscape configuration.It addition, each scene camera Can be independent of respective second scene camera orientation.Alternately, two scene cameras 2 are permissible Having fixing orientation, it can be mutually the same or can be different from each other.

It addition, prism or lens may be mounted at before scene camera 2, to produce scene camera 2 Relative to the different location of the visual field of glasses, read the more downward of application in particular for nearly scope The visual field of orientation.

6 LED9 position around each eyeglass lens 8.They exist with the centre wavelength of 850nm (it is typically greater than 750nm and less than 1000nm) in infrared wavelength range to launch.They by by The 50mA electric current that IR LED constant current source 20 provides drives.

Replace with LED9 direct irradiation eyes, it can be envisaged that there is the embodiment of photoconduction.One Or the photoconduction (such as optical fiber) of several sections can be used.The irradiation of eyes can use focusing optic Part (structured illumination) is implemented.Substituting LED9, applicable diffraction optical device or laser instrument are permissible It is used to irradiate the pattern of the coherent light of eyes.Light source can be used together with optical element, Produce on eyes 10l and 10r for (such as with focusing optics or diffraction optical device) Reflection graphic patterns.Irradiation source can launch visible ray or near infrared light.Irradiation source can be positioned at framework 4 In or on, especially around eyeglass lens 8l and 8r cast arrange in.Alternately, irradiate Source can be positioned on edge or the framework of head mounted display.It can be specifically designed to Reflection graphic patterns is produced in the ocular surface of tester 31.

When the eyeglass device 1 tested persons wear shown in Fig. 2, the situation shown in Figure 10 A Realize in a simplified manner.Eye camera 3 is arranged such that, is fixed to test at eyeglass device 1 In the case of the head of personnel, on framework 4, the optics of at least one parameter of capture eyes 10 Path M extends on the straight line from eye camera 3 to eyes 10.

The different configurations of Fig. 3 and 10B display eyeglass device 1.Eyeglass device 1 includes the company of defining It is connected to the reflecting mirror 11 of the optical deflection element which of framework 4, reflecting mirror 11 and eye camera 3 be arranged to make , in the case of eyeglass device 1 is fixed on the head of tester, on framework 4, use In the optical path M of at least one parameter of capture eyes 10 from eye camera 3 via reflecting mirror 11 Extend to eyes 10.The 3-D view of Fig. 3 demonstrates the angle from backsight or the eye of the interior angle regarded Lens device 1.In the accompanying drawings, the reflection of left and right eyes 10l and 10r is respectively displayed on eyeglass lens 8l With in 8r.Coordinate system is cartesian coordinate system, and z-axis line is directed in projection plane.

Therefore, eye camera 3l and 3r can be installed in the front and above of eyes 10l and 10r, And photoconduction or reflecting mirror 11 are positioned at before eyes 10l and 10r and lower section, such as at a pair The lower edge of mirror lens 8l and 8r, for from obtaining each eyes with low perspective view forward The image of 10l and 10r, and to make described image be visible for eye camera 10l and 10r. Photoconduction or reflecting mirror 11 can be that (smooth) reflecting mirror, spherical mirror, vault, customization are saturating Mirror, hologram image photoconduction etc..Reflecting mirror 11 can only reflect the wavelength of particular range and for other It it is transmission.

Reflecting mirror 11 can be smooth reflecting mirror or spherical mirror.The advantage of spherical mirror exists Exceed in its visual field being exaggerated a camera 3 with the smooth obtainable visual field of reflecting mirror.Fig. 3's Configuration additionally allows for being positioned to optical system, very close to eyes 10 (direction initialization), thus improve Ergonomics and aesthetics.The visual field of tester oneself is difficult to be blocked.Reflecting mirror 11 can be institute The hot mirror of meaning, i.e. reflecting mirror 11 in visible wavelength region, be transmission and at infrared wavelength model There is in enclosing higher reflectance.It can the thinnest and (the so-called vault) of hollow, The little deformation changed caused by refraction.It can be by demonstrating the least refractive index (IOR) Material manufacture.

In two kinds of situations (Figure 10 A and 10B), eye camera 3 is arranged such that for capturing The optical path M of at least one parameter of eyes 10 eliminates framework insert, i.e. eyeglass lens 8.It addition, eyeglass lens 8 is arranged such that the optical axial K and optical path M of eyes 10 Eyes 10 are included as the single optical element being used in combination with.It addition, optical path M is overall Extending in space S p, it extends on the side towards the eyeglass lens 8 of eyes 10.

Embodiment shown in Fig. 2 and 3 and Figure 10 A and 10B is reduced respectively due to upper eyelid The eyes caused are inaccessible.

Fig. 6 A to 8 shows the parallax compared with prior art reducing eyeglass device 1.As from Fig. 6 A finding, tester actually by its eye focus to the position of object 29 and is filled by glasses Put focus 32 determined by 1 generally using as during from the eyeglass device 1 that prior art is known It not to overlap very well.This effect typically tester position the closer to by the object being focused 29 Time the most obvious.But, eyeglass device 1 according to embodiments of the present invention, determined by focus 32 With coincidence between actual object 29 is the best, even for the measurement distance (ginseng of as little as 0.5m See Fig. 6 B).This realizes by minimizing the distance between eyeball center and camera focus.

Described situation figure 7 illustrates again.Owing to eyes 10 and scene camera 2 are positioned at slightly On different positions, so the difference on their visual angle respectively for Focused objects 29 is at thing Body 29 respectively the closer to eyes 10 and scene camera 2 position time pre-add substantially (for less Z value there is bigger deformation).Eyeglass device 1 can be by school in the situation shown in Fig. 6 B Accurate.It is positioned in calibration plane P after object 29 and by calibration eyeglass device 1, it is ensured that Determined by focus 32 actually fall reality object 29 on.Generally at distance test object A certain distance plane on perform calibration.Its by measured gaze-direction (angle) with Pixel in scene video frame is associated.This calculating is only for the point being positioned in described calibration plane Give effective result.Be positioned at the point not in described plane, introduce systematic error (depending on Difference).When the distance of eyeglass device Yu object 29 is increased, the described distance to calibration plane P And result in obvious deviation to difference between the actual range of object 29.For real according to the present invention Executing the eyeglass device 1 of example, these deviations or parallax for all distances d are (by symbol in fig. 8 Number S2 circle represents) much smaller than the deviation according to the device described in prior art or parallax (symbol S1, rectangle).Thin reticule is relevant to the group of symbol S2, and the group phase of slightly reticule and symbol S1 Close.Described reticule is corresponding to for alignment purpose focus 32.

Parallax is mathematically modeling the position into scene camera 2 relative to the function of eye position.Due to Estimation difference that what parallax was caused stare by by scene camera 2 according to by shown by mathematical modelling Result is positioned as close to eyes 10 and places and be minimized.Parallax can be followed the trail of by utilizing eyes The anaclasis number of degrees estimate to focus distance and by estimate eyes relative to eye tracks device Position and revised further.

In order to realize even preferably result, the visual field of scene camera 2 can be optimised.There is mark The scene camera 2 of quasi-optics device has and does not covers whole physiology and stare scope (normalized optical device The horizontal field of view of part: 40 ° to 50 °；Typical physiology's scope of staring is 60 °) visual field.? In embodiment, the visual field of scene camera 2 therefore can be optimised according to respective application.At Fig. 9 A With 9B shows such visual field optimization method.Dress the user of eyeglass device 1 simultaneously Viewing background B and his mobile phone 30.Background is mainly covered according to Fig. 9 A, visual field FOV1 B.When tester 31 looks down his mobile phone 30, the change of gaze-direction automatically by Eye camera 3l and 3r determines, the visual field of scene camera 2 is fixed automatically by switching to portrait from landscape To and be conditioned (visual field FOV2).This can be by the machinery of 90 ° of the z-axis line of scene camera 2 Roll or by using the optical prism before scene camera 2 to realize.It addition, make apparatus Two the scene cameras having different inclinations or roll angle are feasible.Alternately, other light Learn beam splitter can be used in before scene camera 2.

In a word, eyeglass device 1 defines wear-type eye tracking system, and it is by three Ge Xiang mechanisms Become: two eye camera 3l and 3r and at least one scene camera 2.Three camera 3l, 3r and 2 can To have manageable bandwidth, such as by adjustable frame rate or resolution.One or several Pretreatment unit 6,16,17 and 26 can exist, and it performs from camera 2,3l and 3r is received The variable compression of the video flowing arrived.The compression level of video flowing can with eye camera 3l and 3r and Scene camera 2 is identical, or video flowing can be for eye camera 3l and 3r and scene camera 2 quilt Compress individually.The frame rate of eye camera 3l can correspond to obtain at full speed, the frame of eye camera 3r Speed can correspond to 1/10 speed and obtains, and the frame rate of scene camera 2 can correspond to 1/2 speed Degree obtains.Replacing the frame rate of regulation different cameral, alternately, obtaining speed can be chosen Become identical, and data process is directed to each camera and is differently carried out.Even if two cameras obtain Same amount of data, a camera data provided can be than the number provided by another camera According to compressing larger.Different compression speeds and different acquisition speed can also be combined.All right Omit when transmitting data such as every one second acquired image, thus will send the number to CPU It is decreased to half according to amount.Camera 2, the signal of 3l and 3r can be transmitted via wirelessly or non-wirelessly interface CPU (seeing Fig. 5) to PC27.For other data sources satellite interface and for and this The method that a little data sources synchronize can be carried out in eyeglass device 1.

Eyeglass device 1 can be just as including the system of several commutative part.Eyeglass device 1 can have There are nose or the nose support 7 of for there being little or nosey face replaceable group.So, eyeglass device 1 can be worn on eyesight correcting glasses, and does not throws into question.It addition, eyeglass device 1 has For the maintaining body of replaceable glasses, it can have different light for specific wave-length coverage Transmission level (such as transparent glasses or sunglasses).Additionally or alternatively, removable glasses can To have near-infrared optical optical filter, to mate the wavelength of irradiation source and to be blocked in identical and similar ripple All light of long outside or some light arrive ocular surface, to improve the noise in ocular surface Ratio.Eyeglass device 1 has edge and nose bridge, and it is used as eye camera 3l and 3r and scene camera The installed part of 2 or housing.It is replaceable that eye camera 3l and 3r is mounted so that their visual field extends to Glasses 8l and 8r after.

For eyeglass device 1, eye tracks, supernatural measurement can be carried out (occulometrics), Biological measurement and position traverse measurement, for move in free scope Assembling is measured the most all sidedly and divides subhuman behavior.Wear-type eye tracks device is by reality Existing, it is to be not required to calibration and provide astigmatism estimation.Eye tracks is functional when having zero start Between.Need not adjust.Eyeglass device 1 only can be placed on it and start by tester 31 Use it.It has and covers the biggest of physiological range of human eye's motion and stare tracking model Enclose (in level 80 °, vertically go up 60 °).It is unusual robustness and having in staring mapping Astigmatism is compensated in high precision, and parallax is minimized, and optical axis journal offset is compensated and described device It is not required to calibration, the alignment features of a point maybe can be used to calibrate.It addition, it is designed to It is operated regardless of ethnic group (Caucasian, Aisan, African etc.), sex and age.Scene The visual field of camera 2 is optimised.By using optics, inertia or magnetic sensor, head-tracking merit Can be able to be carried out.Eyeglass device is additionally provided with biometric characteristic, such as measures pupil or different Color edge diameter, and provide and EEG, the joint of ECG, EOG etc. and the synchronization option.? Eventually, can integrate with head mounted display.Portable meter can be projected virtual images into On the user eyes of calculation machine screen.Additionally, it is provided that use eye motion (stare, blink) The probability interactive with " object " in virtual image.

Head-tracking function can be by using three axis gyroscopes, three axis accelerometers and/or three axles Line magnetometer realizes, and has the fusion of optional sensor for sextuple head-tracking.

In a word, eyeglass device 1 provides very specific optics and electronic structure.About electronics structure Making, the three or more high resolution camera with assignable bandwidth is integrated into described device 1 In.It is contemplated that the single treatment channel for eye camera 3l and 3r and scene camera 2.Light Learn the removable glasses that the feature constructed is to have various character.The optics of eye camera 3l and 3r Path extends respectively into after glasses or eyeglass lens 8l and 8r.It addition, one group of LED9 allows Irradiation to the alterable height of eyes 10l and 10r.For example, it is possible to control several around the irradiation of eyes What configuration.Specific LED subgroup can be controlled relative to stroboscopic effect and order.Finally, eyes Irradiation can be realized by point, line or bidimensional light source.

Reference marker

1 eyeglass device

2 scene cameras

3,3l, 3r eye camera

4 frameworks

5l, 5r side lever

6 pretreatment units

7 nose supports

8,8l, 8r eyeglass lens

9 LED

10,10l, 10r eyes

11 reflecting mirrors

12 mikes

13 auxiliary/synchronous port

14 cables

15 electronic installations

16 pretreatment units

17 pretreatment units

18 mpeg encoders

19 usb hubs

20 IR LED constant current source

21,22 IR LED chains

23,24 PCB

25 USB2.0 cables

26 pretreatment units

27 PC

28 recorders

29 objects

30 mobile phones

31 testers

32 focus

W1, w2 width

H height

L length

A inclination angle

K optical axial

M optical path

O system reference initial point

P calibration plane

Sp space

D distance

S1, S2 symbol

B background

FOV1, FOV2 visual field

X, y, z axis

Claims (18)

1. an optical measuring device (1), is used for capturing the survey dressing described optical measuring device (1) At least one parameter of at least one eye (101,10r) of examination personnel (31), described optical measuring device (1) including: framework (4), be connected at least one framework insert (81,8r) and at least of framework (4) One capturing unit (31,3r), wherein said framework (4) is designed to described optical measuring device (1) It is fixed to the head of tester (31) so that at least one framework insert (81,8r) is at least one Individual eyes (101,10r) on the optical axial (K) of described at least one eye (101,10r) at least One view direction is positioned at before at least one eye (101,10r) of tester (31), described At least one capturing unit (31,3r) is designed to capture at least one eye (101,10r) optically At least one parameter,

Wherein said at least one capturing unit (31,3r) is arranged to so that (a) is for capturing at least The optical path (M) of at least one parameter of one eye (101,10r) is by least one frame described Frame insert (81,8r) forecloses,

It is characterized in that,

Described optical measuring device (1) is suitable to be blocked by described framework insert (81,8r) described The optical path of capturing unit (31,3r), for this purpose it is proposed, described capturing unit (31,3r) is designed Become so that it is being associated with the optical properties of at least one framework insert (81,8r) described It is optical sensitive in predetermined spectral region, wherein said framework insert (81,8r) quilt It is arranged so that described predetermined spectral region is stopped by framework insert (81,8r).

Optical measuring device the most according to claim 1 (1), it is characterised in that

Described framework insert (81,8r) is arranged such that, is fixed at optical measuring device (1) During to the head of tester (31), by the point of framework insert (81,8r) and tester (31) The line of eyes (101,10r) determine viewing path, and described capturing unit (31,3r) is arranged to Make the optical path (M) of at least one parameter for capturing described eyes (101,10r) and described Viewing path includes eyes (101,10r), as the optical element being uniquely used in conjunction with.

Optical measuring device the most according to claim 1 (1), it is characterised in that

Described optical path (M) fully extends in space (Sp), and described space fills in optical measurement When putting the head that (1) is fixed to tester (31), described framework insert (81,8r) towards described Extend on the side of at least one eye (101,10r).

Optical measuring device the most according to claim 1 (1), it is characterised in that

At least one framework insert (81,8r) described has at least one optical properties.

Optical measuring device the most according to claim 4 (1), it is characterised in that

At least one framework insert described is configured to optical element.

Optical measuring device the most according to claim 5 (1), it is characterised in that

Described optical element is configured to optical lens and/or diffraction optical element.

Optical measuring device the most according to claim 4 (1), it is characterised in that

At least one framework insert (81,8r) described is configured to optical spectra optical filter.

Optical measuring device the most according to claim 7 (1), it is characterised in that

Described optical spectra optical filter is configured to high-pass filter, low pass filter, bandpass filter Sheet or notch filtering light sheet.

Optical measuring device the most according to claim 1 (1), it is characterised in that

Described capturing unit (3r, 31) can be at least that optics is quick in predetermined spectral region at one Sense.

Optical measuring device the most according to claim 9 (1), it is characterised in that

At least one illumination unit (9), at least one illumination unit described is in optical measuring device (1) When being fixed to the head of tester (31), being configured to be transmitted in can be in predetermined spectral region Radiation so that described in be radiated to partially to be mapped on described at least one eye (101,10r).

11. optical measuring devices according to claim 9 (1), it is characterised in that

Described can in predetermined spectral region described at least one framework insert (81,8r) Absorbance be preferably at most 50%.

12. optical measuring devices according to claim 11 (1), it is characterised in that

Described can in predetermined spectral region described at least one framework insert (81,8r) Absorbance less than 20%.

13. optical measuring devices according to claim 9 (1), it is characterised in that

Described can predetermined spectral region in infrared wavelength range.

14. according to the optical measuring device (1) according to any one of claim 1-13, and its feature exists In,

It is upper so that in optical measuring device (1) that described capturing unit (31,3r) is disposed in framework (4) When being fixed to the head of tester (31), capture at least one of at least one eye (101,10r) The described optical path (M) of parameter is at the straight line from described capturing unit (31,3r) to eyes (101,10r) Upper extension.

15. according to the optical measuring device (1) according to any one of claim 1-13, and its feature exists In,

Also include optical deflection element which (11), described optical deflection element which (11) and described capturing unit (31, 3r) be disposed in framework (4) upper so that, be fixed to tester (31) at optical measuring device (1) Head time, capture the described optical path of at least one parameter of at least one eye (101,10r) (M) eyes (101,10r) are extended to from described capturing unit (31,3r) via described deflecting element.

16. according to the optical measuring device (1) according to any one of claim 1-13, and its feature exists In,

Captured at least one parameter described is about the orientation of described at least one eye (101,10r) And/or position and/or catacleisis and/or pupil diameter and/or sclera characteristic and/or iris characteristic and/ Or the feature of blood vessel and/or corneal nature.

17. according to the optical measuring device (1) according to any one of claim 1-13, and its feature exists In,

Described framework insert (81,8r) includes display unit so that fix at optical measuring device (1) During to the head of tester (31), the display on described display unit can be by described test person At least one eye (101,10r) optical acquisition of member (31).

18. 1 kinds of systems, including according to the optical measuring device (1) any one of aforementioned claim With at least two framework insert (81,8r), described at least two framework insert (81,8r) they Difference in transmission and/or reflecting attribute, wherein said framework is configured so that described at least two frame Frame insert (81,8r) can removably be connected to described system.