CN104252622A - Mobile terminal front-mounting and iris identification integration photoelectric imaging system and method - Google Patents

Abstract

The invention discloses a mobile terminal front-mounting and iris identification integration photoelectric imaging system which is provided with an optical filter, an optical imaging lens, a fixed mounting seat of the optical imaging lens, an image sensor, an illumination light source and an imaging system fixed mounting substrate in sequence along the optical axis of the imaging system from top to bottom, wherein a mobile terminal main board is also arranged on the imaging system fixed mounting substrate; an LED (light emitting diode) current driver and a processor chip are integrated on the mobile terminal main board.

Description

Mobile terminal preposition and iris recognition integrated optical electric imaging system and method

Technical field

The present invention relates to bio-identification photoelectric field, the preposition and iris recognition integrated optical electric imaging system of especially a kind of mobile terminal for high security.

Background technology

Mobile terminal comprises smart mobile phone, flat board, wearable device etc., present infotech mobile development trend, and mobile terminal device is necessarily following is suitable for equipment the most widely.

At present, mobile terminal in real world applications pays at mobile security, account safety logs in, use extremely extensive in Web bank, as the utilization of the aspects such as remaining sum treasured, micro-letter, bank account management, although in its use procedure, for life brings great convenience, but a kind of novel economic crime rise gradually undertaken by features such as security of mobile terminal energy weaknesses.

And in mobile terminal, the customary means that prior art carries out identity validation is exactly Password Input, but the means security performance of this identity validation very low, only need to implant simple Virus on mobile terminals, just this password can be revealed, cause corresponding loss.In order to address this problem, still carry out mobile terminal safety authentication by the mode of bio-identification in the world; As the fingerprint identification technology based on the exploitation of AuthenTec company that Apple proposes, this Technology application, on mobile phone terminal, greatly improves the identity validation security of mobile terminal; But, in the process of fingerprint technique identification, because fingerprint is static, although have uniqueness, but be also extremely easily acquired finger print information, even be imitated, so along with fingerprint technique utilization on mobile terminals more and more extensive, its security also can be on a declining curve accordingly, so the iris recognition more in security with advantage solves very effective method in mobile terminal safety authentication procedures, and iris authentication system is that in existing bio-identification, degree of accuracy is the highest.

At present in all mobile terminals, in iris authentication system technology and product, do not realize the preposition photo electric imaging system and the integration of iris recognition photo electric imaging system that are used for face Self-timer.If but the preposition photo electric imaging system of face Self-timer and the integration of iris recognition photo electric imaging system separately independent realization, its cost increases greatly, and the volume of main mobile terminal cannot provide accommodation 2 to overlap the installing space of separately Individual optical imaging system.

Although in false proof divine force that created the universe security, iris recognition more has advantage compared with fingerprint recognition of face in addition, if but large-scale application moves the important events such as wholesale payment in such as mobile phone, still need further to upgrade the security technique of false proof divine force that created the universe In vivo detection, the threat eliminated safe hidden trouble.The object of bio-identification own is exactly for safety after all, and itself security is that most fundamental sum is most important.

Further, the mobile terminal of high security is preposition needs to solve following serious problem with iris recognition integrated optical electric imaging system:

1, preposition and iris recognition integrated optical electric imaging system in mobile terminal application, meet preposition photo electric imaging system and the integration of iris recognition photo electric imaging system of face Self-timer, its fixing fabric structure is in 8.5mm*8.5mm*6mm.

2, preposition and iris recognition integrated optical electric imaging system in mobile terminal application, needs the false proof divine force that created the universe biopsy method of a whole set of high security, ensures the security of bio-identification itself.

3. preposition and iris recognition integrated optical electric imaging system in mobile terminal application, needs the theory deduction of the transformational relation instructing photo electric imaging system to design.

4, preposition and iris recognition integrated optical electric imaging system in mobile terminal application, need greatly to reduce costs, cost could be applied within being reduced to 10 U.S. dollars on a large scale.

Overcoming the above problems is the ultimate challenge faced at present.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of mobile terminal for high security preposition and iris recognition integrated optical electric imaging system.

In order to solve the problems of the technologies described above, the invention provides the preposition and iris recognition integrated optical electric imaging system of a kind of mobile terminal and comprising processor chips, LED current driver, LED illumination light source, optical filter, optical imaging lens, imageing sensor composition; Comprise the optical path of optical path for preposition photo electric imaging system and iris recognition photo electric imaging system; The optical path of described preposition photo electric imaging system comprises: LED illumination light source radiation RGB imaging wavelength, optical filter filters RGB imaging wavelength, optical imaging lens physics Refractive focusing RGB imaging wavelength, imageing sensor imaging array individual reception RGB wavelength channel; The optical path of described iris recognition photo electric imaging system comprises: LED illumination light source radiation IR imaging wavelength, optical filter filters IR imaging wavelength, optical imaging lens physics Refractive focusing IR imaging wavelength, imageing sensor imaging array individual reception IR wavelength channel; The imaging array of described imageing sensor is configured to the RGB-IR wavelength channel with individual reception; Described LED illumination light source is configured to have the radiated wavelength range mutually mated with imageing sensor RGB-IR imaging wavelength passage; Described optical filter is configured to have the wavelength-filtered scope of mutually mating with imageing sensor RGB-IR imaging wavelength passage; Described optical imaging lens is configured to have the focusing wavelength coverage of mutually mating with imageing sensor RGB-IR imaging wavelength passage; Described processor chips are configured to for driving imageing sensor to arrange, the image pixel value data that control chart image-position sensor RGB-IR wavelength channel imaging array exports, and drived control LED current driver; Described LED current driver is configured to for drived control LED illumination light source radiation intensity, angle of radiation position, and radiated time; Described optical imaging lens is configured to universal focus lens, comprises liquid driven lens, liquid crystal drive lens, VCM voice coil loudspeaker voice coil drive lens, MEMS to drive in lens, EDOF wave-front phase modulation lens or wafer scale array lenticule any one.Namely this system sets gradually optical filter (being present in the upper end of optical imaging lens upper end or imageing sensor, for filtering imaging wavelength) from top to bottom along imaging system optical axis, optical imaging lens (for physics Refractive focusing imaging wavelength), the fixed mounting (for fixedly mounting optical imaging lens) of optical imaging lens, imageing sensor (exporting image for opto-electronic conversion), lighting source (comprise RGB-LED lighting source RGB and IR-LED lighting source IR, RGB-LED lighting source RGB is used for producing the radiation of RGB imaging wavelength to preposition photo electric imaging system, IR-LED lighting source IR is used for producing the radiation of IR imaging wavelength to iris recognition photo electric imaging system) and imaging system fixed installation substrate (for providing preposition and iris recognition photo electric imaging system fixed installation carrier), imaging system fixed installation substrate is also provided with Mobile terminal main board (for realizing mobile terminal function circuit carrier), on Mobile terminal main board, integrated LED current driver is (for drived control LED illumination light source radiation intensity, angle of radiation position, and radiated time) and processor chips (for drived control LED current driver and imageing sensor).

As improvement that is preposition to mobile terminal of the present invention and iris recognition integrated optical electric imaging system: it be 400-700nm, IR imaging wavelength is 800-900nm that described imaging wavelength comprises RGB imaging wavelength; Or RGB imaging wavelength is 400-650nm, IR imaging wavelength is 750-850nm; Described preposition photo electric imaging system adopts RGB imaging wavelength, and focusing task object distance WD is at least at 30-100cm; Described iris recognition photo electric imaging system adopts IR imaging wavelength, and focusing task object distance WD is at least at 10-30cm; Described LED illumination light source has: RGB and the IR imaging wavelength of independent radiation, one or more different angle of radiation position, the continuous or pulsed irradiation sessions synchronous with imageing sensor and radiation intensity; Described optical filter has: filter RGB and IR imaging wavelength, the light in transmission RGB and IR imaging wavelength range, reflection and/or the light absorbed outside RGB and IR imaging wavelength range; And meet following span: light filterability Fi≤10.0% in RGB and IR imaging wavelength range, light filterability Fo >=99.9% outside RGB and IR imaging wavelength range; Or equivalence, light transmission Ti >=90.0% in RGB and IR imaging wavelength range, light transmission To≤0.1% outside RGB and IR imaging wavelength range; Described optical imaging lens has: physics Refractive focusing RGB and IR imaging wavelength; It is to RGB and IR imaging wavelength: surperficial maximum reflectivity Rmax≤1.0%, surperficial average reflectance Ravg≤0.35%; Or equivalence, surperficial minimum transmittance Tmin >=99.0%, surperficial average transmittance Tavg >=99.65%; And its focal length EFL, numerical aperture FNO meet: 3mm≤EFL≤6mm, 2.0≤FNO≤4.0.

The improvement of and iris recognition integrated optical electric imaging system preposition as mobile terminal of the present invention: described iris recognition photo electric imaging system has following optical imagery and requires: the imaging wavelength WI of iris recognition photo electric imaging system meets: 800nm≤WI≤900nm or 750nm≤WI≤850nm; The focusing task object distance WD of iris recognition photo electric imaging system meets: 10cm≤WD≤30cm; The pixel spatial resolution of iris recognition photo electric imaging system should meet: PSR >=13pixel/mm; The optical magnification of iris recognition photo electric imaging system, should meet: OM=PS*PSR; Wherein said: PS is the physical size of each imaging pixel cell of imageing sensor; PSR is the pixel spatial resolution of iris recognition photo electric imaging system; The optical space resolution of iris recognition photo electric imaging system should meet in image space plane: during at modulation transfer function 60%, 1/ (4*PS)≤OSRI≤1/ (2*PS).

As improvement that is preposition to mobile terminal of the present invention and iris recognition integrated optical electric imaging system: described preposition photo electric imaging system has following optical imagery and requires: the imaging wavelength WI of preposition photo electric imaging system meets: 400nm≤WI≤700nm or 400nm≤WI≤650nm; The focusing task object distance WD of preposition photo electric imaging system meets: 30cm≤WD≤100cm; The pixel spatial resolution PSR of preposition photo electric imaging system should meet: PSR≤4pixel/mm; The optical magnification OM of preposition photo electric imaging system, should meet: OM=PS*PSR; Wherein said: PS is the physical size of each imaging pixel cell of imageing sensor; PSR is the pixel spatial resolution of preposition photo electric imaging system; The optical space resolution OSRI of preposition photo electric imaging system should meet in image space plane: when modulation transfer function 60% (MTF=0.6), 1/ (4*PS)≤OSRI≤1/ (2*PS) lp/mm.

The further improvement of and iris recognition integrated optical electric imaging system preposition as mobile terminal of the present invention: each imaging pixel cell of described imageing sensor imaging array individual reception RGB-IR wavelength channel, comprising: for converging the lenticule of photon; For the independent RGB-IR wavelength channel filter layer of filtered photons; Photon for catching incident wavelength carries out the semiconductor photo diode of photoelectricity quantum conversion; The reset anomalous integral sensing circuit of charge voltage is read for the anomalous integral that resets; For the analog-digital converter ADC that conversion voltage value is quantized values; Lenticule 201 (micro lens), independent RGB-IR wavelength channel filter layer 202 (RGB-IR filter), semiconductor photo diode 203 (photo diode), reset anomalous integral sensing circuit 204, analog-digital converter ADC205 set gradually from top to bottom.

The further improvement of and iris recognition integrated optical electric imaging system preposition as mobile terminal of the present invention: described lenticule has and converges photon efficiency or fill factor, curve factor FF >=95%; Described RGB-IR wavelength channel filter layer produces independently RGB-IR wavelength channel for filtering; B wavelength channel: 400nm – 500nm; G wavelength channel: 500nm – 600nm; R wavelength channel: 600nm – 700nm; IR wavelength channel: 800nm – 900nm; Or, B wavelength channel: 400nm – 500nm; G wavelength channel: 500nm – 590nm; R wavelength channel: 590nm – 670nm; IR wavelength channel: 750nm – 850nm; Described filter layer has RGB-IR channel wavelength distribution function FR (λ), FG (λ), FB (λ), FIR (λ); The described semiconductor photo diode photon had by receiving incident wavelength forms electron-hole pair at semiconductor PN and produces the conversion of photoelectricity quantum; The photon that described semiconductor photo diode receives incident wavelength carries out the conversion of photoelectricity quantum, the photoelectricity quantum conversion constant QR of RGB-IR incident wavelength, and QG, QB, QIR, be defined as follows:

$\mathrm{QR}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}r\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FR}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QG}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}g\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FG}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QB}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}b\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FB}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QIR}={\∫}_{\mathrm{\λ}=800\mathrm{nm}}^{\mathrm{\λ}=900\mathrm{nm}}\mathrm{ir}\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FIR}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

(EQ1)

Described λ is imaging wavelength, g (λ), r (λ), b (λ), ir (λ) is respectively the photoelectricity conversion quantum efficiency sensitivity function of the photodiode RGB-IR wavelength channel of imageing sensor, FR (λ), FG (λ), FB (λ), FIR (λ) is respectively the filter layer RGB-IR channel wavelength distribution function of imageing sensor, the filterability Wavelength distribution function that f (λ) is optical filter, the radiance Wavelength distribution function that S (λ) is LED illumination light source; The transmissivity Wavelength distribution function that L (λ) is optical imaging lens; When 400-700nm imaging wavelength, the photoelectricity quantum conversion constant unit of QR, QG, QB is V/lux-sec or ke ^-/ lux-sec; When 800-900nm imaging wavelength, the photoelectricity quantum conversion constant unit of QIR is V/ (mw/cm ²-sec) or ke ^-/ (mw/cm ²-sec); The described voltage amplitude anomalous integral sensing circuit for the anomalous integral reading electric charge that resets is respectively used to the charge voltage V of reset integrating photodiode, and reads the charge voltage V of photodiode;

Described charge voltage V=Q/C (EQ2)

Wherein: Q is the electric charge of the reset integration of photodiode, and C is photodiode equivalent capacity; Described photodiode has full charge capacity FCC, FCC>=10ke ^-; Described voltage amplitude anomalous integral sensing circuit has charge-voltage conversion gain CG:CG=1/C=V/Q, and the reset anomalous integral of overall frame pattern reads or the reset anomalous integral of rolling row mode reads; The number of significant digit that described analog-digital converter ADC has simulation-numerical value conversion quantization resolution is>=8.

As further improvement that is preposition to mobile terminal of the present invention and iris recognition integrated optical electric imaging system: the physical size of each photodiode imaging pixel cell of described imageing sensor imaging array individual reception RGB-IR wavelength channel meets: 1um/pixel≤PS≤3um/pixel; In described imageing sensor imaging array, the numerical value YR of the pixel cell opto-electronic conversion of the R wavelength channel of individual reception is:

YR＝FF*QR*GAIN*EXP*ADCG*E*PSU (EQ3)

In described imageing sensor imaging array, the numerical value YG of the pixel cell opto-electronic conversion of the G wavelength channel of individual reception is:

YG＝FF*QG*GAIN*EXP*ADCG*E*PSU (EQ4)

In described imageing sensor imaging array, the numerical value YB of the pixel cell opto-electronic conversion of the B wavelength channel of individual reception is:

YB＝FF*QB*GAIN*EXP*ADCG*E*PSU (EQ5)

In described imageing sensor imaging array, the numerical value YIR of the pixel cell opto-electronic conversion of the IR wavelength channel of individual reception is:

YIR＝FF*QIR*GAIN*EXP*ADCG*E*PSU (EQ6)

Wherein: described EXP is reset integral time or the time shutter of imageing sensor imaging array; Described EXP synchronously equals LED illumination light source radiated time T; Described GAIN is the Digital and analog gain of imageing sensor imaging array; Described ADCG is the ADC voltage analog-numerical value conversion quantization resolution of imageing sensor imaging array; Described E is radiance or the radiant illumination of the reception of imageing sensor imaging array;

E＝C*β*I/WD ²*cosψ*(1/FNO) ² (EQ7)

Wherein: I is LED illumination light source radiation intensity; ψ is the angle of LED illumination light source radiation position and imaging system optical axis; WD is the focusing task object distance of optical imaging system; FNO is the numerical aperture of optical imaging lens; β is the biological organism optical effect reflectivity of imaging object (iris or face); The wavelength of LED illumination light source radiation through the absorption of iris or face biological tissue, reflection and scattering generation biological organism optical effect reflectivity; C is the optical coefficient of optical imaging system;

C＝1/16*cos ⁴ω/(1+OM) ² (EQ8)

Wherein: ω is the field angle of object of incident light; OM is the optical magnification of photo electric imaging system; Described PSU is the physical size square measure ratio of each photodiode imaging pixel cell of imageing sensor imaging array, PSU=(PS*PS)/cm ²; Described QR, QG, QB, QIR are each imaging pixel cell photoelectricity quantum conversion constant of individual reception wavelength channel in imageing sensor imaging array; The digital value YR of the pixel cell opto-electronic conversion of individual reception wavelength channel in described imageing sensor imaging array, YG, YB, YIR are further used as image original RAW pixel data I{YR, and YG, YB, YIR} export.

As improvement that is preposition to mobile terminal of the present invention and iris recognition integrated optical electric imaging system: described imageing sensor imaging array has the RGB-IR imaging pixel cell of at least 1920*1080 quantity; And its RGB-IR imaging pixel cell has 4 direction 2*2 transpostion interval array formats, and the identical wavelength channel pixel of RGB-IR adopts 4 direction transpostion interval sampling modes.

A kind of formation method of preposition photo electric imaging system; Comprise the following steps: 1. processor chips control LED current driver drives LED illumination light source and produce RGB imaging wavelength continuously or the radiation of synchronizing pulse pattern; 2. filter and physics Refractive focusing through RGB imaging wavelength, imaging array individual reception 3 RGB wavelength channels of imageing sensor carry out overall frame pattern or rolling row mode reset anomalous integral reads; 3. processor chips obtain the image original RAW pixel data I{YR that in imaging array, 3 identical RGB wavelength channels export respectively, YG, YB}; 4. processor chips are according to image original RAW pixel data I{YR, YG, YB} and pixel cell opto-electronic conversion relation, drive imageing sensor and LED illumination light source and optical imaging lens to focus on, realize FEEDBACK CONTROL; 5. processor chips are respectively to the original RAW data I{YR of 3 identical RGB wavelength channels in imaging array, carry out interpolated reconstruction between YG, YB} pixel; 6. the image I{r after processor chips output interpolated reconstruction, g, b}, each pixel comprises rgb pixel value respectively.

A kind of formation method of iris recognition photo electric imaging system; Comprise the following steps: processor chips control LED current driver drives LED illumination light source and produce IR imaging wavelength continuously or the radiation of synchronizing pulse pattern; Filter and physics Refractive focusing through IR imaging wavelength, imageing sensor imaging array individual reception IR wavelength channel carries out overall frame pattern or rolling row mode reset anomalous integral reads; Processor chips obtain the image original RAW pixel data I{YIR} that in imaging array, identical IR wavelength channel exports; Processor chips, according to image original RAW pixel data I{YIR} and pixel cell opto-electronic conversion relation, drive imageing sensor and LED illumination light source and optical imaging lens to focus on, realize FEEDBACK CONTROL; Processor chips carry out interpolated reconstruction between the original RAW data I{YIR} pixel of IR wavelength channel identical in imaging array; Processor chips export the image I{ir} after interpolated reconstruction.

The method of interpolated reconstruction is carried out between the original RAW data pixels of 11, a kind of identical wavelength channel, comprise the following steps: the pixel value I, sampling the image original RAW interpolation pixel data 4 direction transpostion interval that identical wavelength channel exports, be respectively: the identical wavelength channel pixel Pixel_SC in current direction, the pixel Pixel_SH of the identical wavelength channel of horizontal direction, the pixel Pixel_SV of the identical wavelength channel of vertical direction, to the pixel Pixel_SD of the identical wavelength channel of angular direction; II, interpolation pixel data 4 direction neighborhood pixels interpolation are calculated, Pixel_C, Pixel_H, Pixel_V, Pixel_D: the pixel Pixel_C=Pixel_SC in current direction; The neighborhood pixels interpolation Pixel_H=(Pixel_SH+Pixel_SC)/2 of horizontal direction; The neighborhood pixels interpolation Pixel_V=(Pixel_SV+Pixel_SC)/2 of vertical direction; To the neighborhood pixels interpolation Pixel_D=(Pixel_SH+Pixel_SV+Pixel_SD+Pixel_SC)/4 of angular direction; III, circulate I-II step, and traversal calculates original RAW interpolation pixel datas all in image, forms finally complete interpolated image data.

The false proof divine force that created the universe biopsy method of a kind of iris: in the following ways one or more realizes, to complete the real-time detection function to iris counterfeit, and ensure the security of bio-identification itself: the biological organism optical activity characteristic real-time detection method that the radiation of I .RGB-IR imaging wavelength produces; The pupil iris diameter rate of change biological tissue activity characteristic real-time detection method that the radiation of II .RGB-IR imaging wavelength produces; The optics of cornea reflection position real-time detection method that the radiation of III .RGB-IR imaging wavelength produces; IV. the activity characteristic real-time detection method of eyeball physiological movement.

Improvement as to iris of the present invention false proof divine force that created the universe biopsy method: the biological organism optical activity characteristic real-time detection method that described RGB-IR imaging wavelength radiation produces, comprises the following steps: (i). and processor chips control LED current driver drives LED illumination light source and produce the radiation of RGB imaging wavelength and the radiation of IR imaging wavelength in real time; (ii). real time imagery image IRGB and IIR that the RGB wavelength channel of processor chips real-time image acquisition sensor imaging array and IR wavelength channel export; (iii). processor chips respectively real-time calculation procedure (ii) in the contrast C sk of RGB image IRGB and IR image IIR, Csi, Cip, Csip, Ckip data, are respectively IRGB_Csk, IRGB_Csi, IRGB_Cip, IRGB_Csip, IRGB_Ckip, IIR_Csk IIR_Csi, IIR_ip, IIR_Csip, IIR_Ckip; Wherein: Csk is the contrast between skin area and iris region; Csi is the contrast between sclera region and iris region; Cip is the contrast between iris region and pupil region; Csip is sclera region, the mutual contrast between iris region and pupil region; Ckip is skin area, the mutual contrast between iris region and pupil region; Csk=S (Iskin)/S (Iiris); Csi=S (Isclera)/S (Iiris); Cip=S (Iiris)/S (Ipupil); Csip=(S (Isclera)-S (Iiris))/(S (Iiris)-S (Ipupil)); Ckip=(S (Iskin)-S (Iiris))/(S (Iiris)-S (Ipupil)); Ipupil represents pupil region pixel; Iiris represents iris region pixel; Isclera represents sclera region pixel; Iskin represents skin area pixel; Described function S is respective regions pixels statistics valuation functions, and the method that described pixels statistics valuation functions adopts comprises: statistics with histogram, frequency statistics, mean value is added up, weighted mean Data-Statistics, middle Data-Statistics, energy value is added up, variance statistic, space-frequency domain wave filter etc.; (iv). processor chips calculate picture contrast activity change rate Fsk and Fsi, Fip, Fsip, the Fkip of RGB imaging wavelength radiation and the radiation of IR imaging wavelength respectively in real time; Wherein: Fsk=IRGB_Csk/IIR_Csk*100%; Fsi=IRGB_Csi/IIR_Csi*100%; Fip=IIR_Cip/IRGB_Cip*100%; Fsip=IRGB_Csip/IIR_Csip*100%; Fkip=IRGB_Ckip/IIR_Ckip*100%; (v). according to RGB-IR imaging wavelength irradiating biological organism optical activity characteristic preset value, with step (iv) middle data value Fsk, Fsi, Fip, Fsip, the active contrast respective change rate of Fkip, judges any one or multinomial condition Fsk > 300%, Fsi > 300%, Fip > 300%, Fsip > 900%, Fkip > 900%, realizes detecting iris condition of living organism in real time.

Further improvement as to iris of the present invention false proof divine force that created the universe biopsy method: the pupil iris diameter rate of change biological tissue activity characteristic detecting method that described RGB-IR imaging wavelength radiation produces, comprising the following steps: one. processor chips control LED current driver drives LED illumination light source and produce varying strength dil in real time respectively, RGB and IR imaging wavelength radiation under con and time conditions, stimulates pupil to produce biological tissue activity enlargement and contraction; Two. real time imagery image Idil and Icon tri-under the different radiated time that the RGB-IR wavelength channel of processor chips respectively real-time image acquisition sensor imaging array exports and strength condition. processor chips respectively in real-time calculation procedure two in image Idil and Icon the pupil of iris image with iris diameter than ρ data, be respectively ρ dil and ρ con; ρ=Dpupil/Diris, described Dpupil are pupil diameter length in pixels; Described Diris is iris diameter length in pixels; Four. processor chips calculate corresponding activity change rate Δ ρ=(ρ dil-ρ con) * 100% in real time; Five. according to the preset value of the biological tissue activity enlargement and contraction that the real-time stimulation pupil under varying strength and time conditions produces, with the corresponding activity change rate of data value Δ ρ in step 4, judge Δ ρ > 10% condition, realize detecting iris condition of living organism in real time.

Further improvement as to iris of the present invention false proof divine force that created the universe biopsy method: the optics of cornea reflection position detection method that described RGB-IR imaging wavelength radiation produces, comprise the following steps: 1) processor chips control LED current driver drives LED illumination light source and produce left side Psrl in real time respectively, right side Psrr and side, left and right 2 Psrl & Psrr diverse location condition under the radiation of RGB and IR imaging wavelength, be formed in the optics of cornea reflection spot of diverse location; 2) the real time imagery image Isr of the RGB-IR wavelength channel output of processor chips difference real-time image acquisition sensor imaging array; 3) processor chips respectively real-time calculation procedure 2) in the optics of cornea reflection point position data Psr of image Isr; 4) preset value under diverse location condition is produced respectively in real time according to LED illumination light source, with step 3) in the optics of cornea reflection point position Psr that calculates, judge whether optics of cornea reflection point position Psr meets corresponding LED illumination light source locality condition: if LED illumination light source position is Psrl, Psr=Psrl should be met; If LED illumination light source position is Psrr, Psr=Psrr should be met; If LED illumination light source position is Psrl & Psrr, Psr=Psrl & Psrr should be met; Realize detecting iris condition of living organism in real time.

Further improvement as to iris of the present invention false proof divine force that created the universe biopsy method: the activity characteristic real-time detection method of described eyeball physiological movement, comprise the eyelid movement activity characteristic of the generation detecting eyeball physiological movement in real time, comprise the following steps: a. processor chips control LED current driver drives LED illumination light source and produce the radiation of RGB-IR imaging wavelength in real time; B. the real time imagery image Iem of the RGB-IR wavelength channel output of processor chips real-time image acquisition sensor imaging array; C. the eyelid movement characteristic level data EM of the generation of the eyeball physiological movement of image Iem in the real-time calculation procedure b of processor chips; Wherein: the eyelid movement characteristic degree EM of the generation of eyeball physiological movement is defined as: EM=Visual_Iris/All_Iris*100%; All_Iris is the pixel quantity in iris entire area region in image Iem; Visual_Iris is the pixel quantity in the iris useful area region that in image Iem, eyelid movement is formed; D. the activity change Shuai Zhi ⊿ EM of the eyelid movement characteristic degree EM of the generation of eyeball physiological movement is calculated in real time; E. according to the activity change rate preset value of the eyelid movement characteristic degree of the generation of eyeball physiological movement, with the activity change rate value ⊿ EM of the eyelid movement characteristic level data EM of the generation of the eyeball physiological movement calculated in steps d; sentence disconnected ⊿ EM > 10% condition, realize detecting iris condition of living organism in real time.

Further improvement as to iris of the present invention false proof divine force that created the universe biopsy method: the activity characteristic real-time detection method of described eyeball physiological movement, comprise the activity characteristic from axle stravismus of the generation detecting eyeball physiological movement in real time, comprise the following steps: A. processor chips control LED current driver drives LED illumination light source and produce the radiation of RGB-IR imaging wavelength in real time; B. the real time imagery image Ieg of the RGB-IR wavelength channel output of processor chips real-time image acquisition sensor imaging array; C. in the real-time calculation procedure B of processor chips the eyeball physiological movement of image Ieg generation from axle stravismus characteristic level data EG; Wherein: being defined as from axle stravismus characteristic degree EG of the generation of eyeball physiological movement: EG=S_Iris/L_Iris*100%; S_Iris is from the iris minor axis length in pixels that axle stravismus is formed in image Ieg; L_Iris is from the iris major axis length in pixels that axle stravismus is formed in image Ieg; D. the activity change Shuai Zhi ⊿ EG from axle stravismus characteristic degree EG in the generation of eyeball physiological movement is calculated in real time; E. according to the activity change rate preset value from axle stravismus characteristic degree of the generation of eyeball physiological movement, with the activity change rate value ⊿ EG from axle stravismus characteristic level data EG of the generation of the eyeball physiological movement calculated in step D; sentence disconnected ⊿ EG > 10% condition, realize detecting iris condition of living organism.

Sum up foregoing description, preposition and iris recognition integrated optical electric imaging system and its method by the mobile terminal that present invention achieves high security:

1, preposition and iris recognition integrated optical electric imaging system, realize the preposition photo electric imaging system and the integration of iris recognition photo electric imaging system that meet face Self-timer, its fixing fabric structure is in 8.5mm*8.5mm*6mm.

2, preposition and iris recognition integrated optical electric imaging system, realizes the false proof divine force that created the universe biopsy method of a whole set of high security, ensures the security of bio-identification itself.

3. preposition and iris recognition integrated optical electric imaging system, realizes the theory deduction of setting forth the transformational relation instructing photo electric imaging system to design.

4, preposition and iris recognition integrated optical electric imaging system, realize greatly reducing costs, cost can be applied within being reduced to 10 U.S. dollars on a large scale.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.

Fig. 1 is the overall construction drawing of preposition and iris recognition integrated optical electric imaging system of the present invention;

Fig. 2 is each imaging pixel cell schematic diagram of the imageing sensor 105 imaging array individual reception RGB-IR wavelength channel in Fig. 1.

Fig. 3 is the reset anomalous integral sensing circuit schematic diagram that in Fig. 2, imageing sensor 105 reads electric charge (electronics) voltage for the anomalous integral that resets.

Fig. 4 is the pixel cell 4 direction 2*2 transpostion interval array format schematic diagram of the imaging array of imageing sensor 105RGB-IR wavelength channel in Fig. 2;

Fig. 5 is the neighborhood pixels original RAW interpolation of data value schematic diagram in 4 directions between identical wavelength channel pixel in imageing sensor 105 imaging array in Fig. 2.

Fig. 6 is the contrasted zones schematic diagram that the present invention defines iris image.

Fig. 7 is pupil and the iris diametric representation that the present invention defines iris image.

Fig. 8 is the optical reflection point schematic diagram that the present invention defines the cornea diverse location of iris image.

Fig. 9 is the schematic diagram that the present invention defines the eyelid physiological movement activity characteristic degree of the generation of eyeball physiological movement.

Figure 10 is the schematic diagram from axle stravismus physiological movement activity characteristic degree that the present invention defines the generation of eyeball physiological movement.

Embodiment

Embodiment 1, give the preposition and iris recognition integrated optical electric imaging system of a kind of mobile terminal and method.The method includes the method, the false proof divine force that created the universe biopsy method of iris that carry out interpolated reconstruction between the formation method of preposition photo electric imaging system, the formation method of iris recognition photo electric imaging system, original RAW data pixels to the identical wavelength channel used in the formation method of preposition photo electric imaging system or the formation method of iris recognition photo electric imaging system.

As shown in Figure 1, this system sets gradually optical filter (101 or 104) (for filtering imaging wavelength), optical imaging lens 102 (for physics Refractive focusing imaging wavelength) from top to bottom along imaging system optical axis 100, the fixed mounting 103 (for fixedly mounting optical imaging lens) of optical imaging lens, imageing sensor 105 (exporting image for opto-electronic conversion), lighting source 106 (comprise RGB-LED lighting source 106RGB and IR-LED lighting source 106IR, RGB-LED lighting source 106RGB is used for producing the radiation of RGB imaging wavelength to preposition photo electric imaging system, IR-LED lighting source 106IR is used for producing the radiation of IR imaging wavelength to iris recognition photo electric imaging system) and imaging system fixed installation substrate 107 (for providing preposition and iris recognition photo electric imaging system fixed installation carrier), imaging system fixed installation substrate 107 is also provided with Mobile terminal main board 110 (for realizing mobile terminal function circuit carrier), on Mobile terminal main board 110, integrated LED current driver 108 is (for drived control LED illumination light source radiation intensity, angle of radiation position, and radiated time) and processor chips 109 (for drived control LED current driver and imageing sensor).

In the specific embodiment of the invention 1, preposition and iris recognition integrated optical electric imaging system comprises the optical path of optical path for preposition photo electric imaging system and iris recognition photo electric imaging system; The optical path of preposition photo electric imaging system comprises as follows:

RGB-LED lighting source 106RGB radiation RGB imaging wavelength, optical filter (101 or 104) filters RGB imaging wavelength, optical imaging lens 102 physics Refractive focusing RGB imaging wavelength, the imaging array individual reception RGB wavelength channel of imageing sensor 105.

The optical path of iris recognition photo electric imaging system comprises as follows:

IR-LED lighting source 106IR radiation IR imaging wavelength, optical filter (101 or 104) filters IR imaging wavelength, optical imaging lens 102 physics Refractive focusing IR imaging wavelength, the imaging array individual reception IR wavelength channel of imageing sensor 105.

In specific embodiments of the invention 1, the imaging array of imageing sensor 105 is configured to the RGB-IR wavelength channel with individual reception function; LED illumination light source (LED illumination light source 106RGB and LED illumination light source 106IR-LED) is configured to have the radiated wavelength range mutually mated with the RGB-IR imaging wavelength passage of imageing sensor 105; Optical filter (101 or 104) is configured to have the wavelength-filtered scope of mutually mating with imageing sensor 105RGB-IR imaging wavelength passage; Optical imaging lens 102 is configured to have the focusing wavelength coverage of mutually mating with the RGB-IR imaging wavelength passage of imageing sensor 105; Processor chips 109 are configured to for driving imageing sensor 105 to arrange, i.e. the image pixel value data of the RGB-IR wavelength channel imaging array output of control chart image-position sensor 105, and drived control LED current driver 108; LED current driver 108 is configured to for drived control LED illumination light source (106RGB and 106IR-LED) radiation intensity, angle of radiation position, radiated time.

Above-described optical imaging lens 102 is configured to universal focus lens, can adopt as liquid driven lens, liquid crystal drive lens, VCM voice coil loudspeaker voice coil drive lens, MEMS to drive in lens, EDOF wave-front phase modulation lens or wafer scale array lenticule any one.

It is 400-700nm, IR imaging wavelength is 800-900nm that imaging wavelength of the present invention comprises RGB imaging wavelength; It is 400-650nm, IR imaging wavelength is 750-850nm that imaging wavelength in the present embodiment comprises RGB imaging wavelength.The specific embodiment of the invention 1 as an example, IR imaging wavelength range, imaging wavelength range is bandwidth characteristic in essence, it also can be equal to and is interpreted as and is described by imaging wavelength center (wavelength center) and half-peak band width (FWHM), as 800-900nm scope can be expressed as, centre wavelength 850nm ± 30nm half-peak band width.Further, as imaging wavelength range change citing, can wavelength 850nm ± 15nm half-peak band width centered by arrowband.

Preposition photo electric imaging system adopts RGB imaging wavelength, and focusing task object distance WD is at least at 30-100cm; Iris recognition photo electric imaging system adopts IR imaging wavelength, and focusing task object distance WD is at least at 10-30cm.

Iris recognition photo electric imaging system has following optical imagery requirement:

The imaging wavelength WI of iris recognition photo electric imaging system meets: 800nm≤WI≤900nm or 750nm≤WI≤850nm;

The focusing task object distance WD of iris recognition photo electric imaging system meets: 10cm≤WD≤30cm;

The pixel spatial resolution PSR (pixel spatial resolution) of iris recognition photo electric imaging system should meet: PSR >=13pixel/mm;

The optical magnification OM (optical magnification) of iris recognition photo electric imaging system, should meet: OM=PS*PSR;

Wherein, above-described PS is the physical size of each imaging pixel cell of imageing sensor 105; PSR is the pixel spatial resolution of iris recognition photo electric imaging system;

The optical space resolution OSRI (optical spatial resolution of image of plane) of iris recognition photo electric imaging system should meet in image space plane: when modulation transfer function 60% (MTF=0.6), 1/ (4*PS)≤OSRI≤1/ (2*PS) lp/mm (line is to every millimeter).

Preposition photo electric imaging system has following optical imagery requirement:

The imaging wavelength WI of preposition photo electric imaging system meets: 400nm≤WI≤700nm or 400nm≤WI≤650nm;

The focusing task object distance WD of preposition photo electric imaging system meets: 30cm≤WD≤100cm;

The pixel spatial resolution PSR (pixel spatial resolution) of preposition photo electric imaging system should meet: PSR≤4pixel/mm;

The optical magnification OM (optical magnification) of preposition photo electric imaging system, should meet: OM=PS*PSR;

Wherein, above-described PS is the physical size of each imaging pixel cell of imageing sensor 105; PSR is the pixel spatial resolution of preposition photo electric imaging system;

The optical space resolution OSRI (optical spatial resolution of image of plane) of preposition photo electric imaging system should meet in image space plane: when modulation transfer function 60% (MTF=0.6), 1/ (4*PS)≤OSRI≤1/ (2*PS) lp/mm (line is to every millimeter).

In the present embodiment, each imaging pixel cell structure of the imaging array individual reception RGB-IR wavelength channel of imageing sensor 105 as shown in Figure 2.

Each imaging pixel cell of the imaging array individual reception RGB-IR wavelength channel of imageing sensor 105, comprises as follows: for converging the lenticule 201 (micro lens) of photon 200; For the independent RGB-IR wavelength channel filter layer 202 (RGB-IR filter) of filtered photons 200; Photon 200 for catching incident wavelength carries out the semiconductor photo diode 203 (photo diode) of photoelectricity quantum conversion; The reset anomalous integral sensing circuit 204 of electric charge (electronics) voltage is read for the anomalous integral that resets; For the analog-digital converter ADC205 that conversion voltage value is quantized values.Lenticule 201 (micro lens), independent RGB-IR wavelength channel filter layer 202 (RGB-IR filter), semiconductor photo diode 203 (photo diode), reset anomalous integral sensing circuit 204, analog-digital converter ADC205 set gradually from top to bottom; Incident photon 200 is successively by lenticule 201, independent RGB-IR wavelength channel filter layer 202 and semiconductor photo diode 203.

Lenticule 201 (micro lens) has convergence photon efficiency or fill factor, curve factor (fill factor) FF >=95%; RGB-IR wavelength channel filter layer 202 (RGB-IR filter) produces independently RGB-IR wavelength channel for filtering; In the specific embodiment of the invention 1, B wavelength channel: 400nm – 500nm; G wavelength channel: 500nm – 600nm; R wavelength channel: 600nm – 700nm; IR wavelength channel: 800nm – 900nm; Or further, B wavelength channel: 400nm – 500nm; G wavelength channel: 500nm – 590nm; R wavelength channel: 590nm – 670nm; IR wavelength channel: 750nm – 850nm.Filter layer 202 has RGB-IR channel wavelength distribution function FR (λ), FG (λ), FB (λ), FIR (λ); Semiconductor photo diode 203 photon 200 had by receiving incident wavelength forms electron-hole pair at semiconductor PN and produces the conversion of photoelectricity quantum.

The photon 200 that semiconductor photo diode 203 receives incident wavelength carries out the conversion of photoelectricity quantum, the photoelectricity quantum conversion constant QR of RGB-IR incident wavelength, and QG, QB, QIR, be defined as follows:

$\mathrm{QR}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}r\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FR}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QG}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}g\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FG}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QB}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}b\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FB}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QIR}={\∫}_{\mathrm{\λ}=800\mathrm{nm}}^{\mathrm{\λ}=900\mathrm{nm}}\mathrm{ir}\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FIR}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

(EQ1)

λ is imaging wavelength, in the specific embodiment of the invention 1, preferred RGB imaging wavelength is 400-700nm, IR imaging wavelength is 800-900nm, as equivalent understanding, it is 750-850nm that RGB imaging wavelength further also can be selected to be 400-650nm, IR imaging wavelength.

G (λ), r (λ), b (λ), ir (λ) is respectively the photoelectricity conversion quantum efficiency sensitivity function of the photodiode 203RGB-IR wavelength channel of imageing sensor 105, FR (λ), FG (λ), FB (λ), FIR (λ) is respectively the filter layer 202RGB-IR channel wavelength distribution function of imageing sensor 105, f (λ) is the filterability Wavelength distribution function of optical filter (101 or 104), the radiance Wavelength distribution function that S (λ) is LED illumination light source (106RGB and 106IR-LED); The transmissivity Wavelength distribution function that L (λ) is optical imaging lens 102.

By the definition standard of ISO measurement unit, when 400-700nm imaging wavelength, the photoelectricity quantum conversion constant unit of QR, QG, QB is V/lux-sec (the every lux of volt is per second) or ke ^-/ lux-sec.Have in the specific embodiment of the invention 1 as 2.0V/lux-sec; When 800-900nm imaging wavelength, the photoelectricity quantum conversion constant unit of QIR is V/ (mw/cm ²-sec) (the every centimeters squared per second of the every milliwatt of volt) or ke ^-/ (mw/cm ²-sec); Have as 8000V/ (mw/cm in the specific embodiment of the invention 1 ²-sec).

The reset anomalous integral sensing circuit 204 of electric charge (electronics) voltage is read for the anomalous integral that resets, be respectively used to electric charge (electronics) the voltage V of reset integrating photodiode 203, and read electric charge (electronics) the voltage V (be respectively used to electric charge (electronics) the voltage V of reset integrating photodiode 203, and the formula of electric charge (electronics) the voltage V reading photodiode 203 being as follows) of photodiode 203;

Electric charge (electronics) voltage V=Q/C (EQ2)

Wherein: Q is the electric charge (electronics) of the reset integration of photodiode 203, C is the equivalent capacity of photodiode 203, further, photodiode 203 has full electric charge (electronics) capacity FCC (Full Charge Capacity), FCC>=10ke ^-(thousand electronics) (Kelectrons); Voltage amplitude anomalous integral sensing circuit 204 has electric charge (electronics)-voltage conversion gain CG (Conversion gain): CG=1/C=V/Q unit: μ V/e ^-the every electric charge of microvolt (electronics); The reset anomalous integral of reset anomalous integral reading (Global Shutter) or rolling row mode that voltage amplitude anomalous integral sensing circuit 204 has overall frame pattern reads (Rolling Shutter).

Fig. 3 is that the imaging pixel cell of imageing sensor 105 in the specific embodiment of the invention 1 reads the reset anomalous integral sensing circuit schematic diagram of electric charge (electronics) voltage for the anomalous integral that resets (203 for photodiode, 205 is analog-digital converter ADC, M1, M2, M3 is transistor, Vdd is power supply, GND is ground, reset is the reset integral control signal of reset integral charge (electronics) voltage, read is for reading the reading control signal of electric charge (electronics) voltage, output is that the simulation-numerical value conversion quantized data of analog-digital converter ADC205 exports).

The concrete principle process of reset anomalous integral sensing circuit is as follows:

When for the integral charge that resets (electronics) voltage, the effective turn-on transistor M1 of reset integral control signal reset, incident photon 200 carries out photoelectricity quantum through photodiode 203 and converts stored charge (electronics) to, now read control signal read invalid, and transistor M3 is ended, do not produce reading;

When for reading electric charge (electronics) voltage, read the effective turn-on transistor M3 of control signal read, photodiode 203 stored charge (electronics) is passed through transistor M2, M3 exports analog-digital converter ADC205 to and changes quantized data output output, now the invalid transistor M1 that makes of reset integral control signal reset ends, not stored charge (electronics).

The number of significant digit that above-described analog-digital converter ADC205 has simulation-numerical value conversion quantization resolution is>=8; As 8,10,12 etc., form at least 2 ⁸=256LSB, 2 ¹⁰=1024LSB, 2 ¹²=4096LSB quantization resolution.

In the imaging array of imageing sensor 105, the physical size (PS) of each photodiode 203 imaging pixel cell of individual reception RGB-IR wavelength channel meets following condition: 1um/pixel≤PS≤3um/pixel (the every pixel of micron);

In imageing sensor 105 imaging array, the numerical value YR of the pixel cell opto-electronic conversion of the R wavelength channel of individual reception is:

YR＝FF*QR*GAIN*EXP*ADCG*E*PSU (EQ3)

In imageing sensor 105 imaging array, the numerical value YG of the pixel cell opto-electronic conversion of the G wavelength channel of individual reception is:

YG＝FF*QG*GAIN*EXP*ADCG*E*PSU (EQ4)

In imageing sensor 105 imaging array, the numerical value YB of the pixel cell opto-electronic conversion of the B wavelength channel of individual reception is:

YB＝FF*QB*GAIN*EXP*ADCG*E*PSU (EQ5)

In imageing sensor 105 imaging array, the numerical value YIR of the pixel cell opto-electronic conversion of the IR wavelength channel of individual reception is:

YIR＝FF*QIR*GAIN*EXP*ADCG*E*PSU (EQ6)

Wherein: above-described FF (fill factor) is the fill factor, curve factor of lenticule 201 (micro lens);

EXP is reset integrationTime integral time or the time shutter exposure time of imageing sensor 105 imaging array, unit: S second; EXP synchronously equals LED illumination light source 106 radiated time;

GAIN is the Digital and analog gain of imageing sensor 105 imaging array, without unit;

ADCG is the ADC voltage analog-numerical value conversion quantization resolution of imageing sensor 105 imaging array, unit: LSB/V, value bit every volt;

E is radiance or the radiant illumination of the reception of imageing sensor 105 imaging array, unit: lux (lux) or mw/cm ²(every milliwatt every square centimeter);

E＝C*β*I/WD ²*cosψ*(1/FNO) ² (EQ7)

Wherein: I is LED illumination light source 106 radiation intensity, the every sterad of unit milliwatt (mw/sr); ψ is the angle of LED illumination light source 106 radiation position and imaging system optical axis 100; WD is the focusing task object distance of optical imaging system; FNO is the numerical aperture of optical imaging lens 102, and namely relative opening is apart from reciprocal; β is the biological organism optical effect reflectivity (wavelength of LED illumination light source radiation through the absorption of iris or face biological tissue, reflection and scattering generation biological organism optical effect reflectivity) of imaging object (iris or face); C is the optical coefficient of optical imaging system;

C=1/16*cos ⁴ω/(1+OM) ²(EQ8) wherein: ω is the field angle of object of incident light; OM is the optical magnification of photo electric imaging system;

PSU is the physical size square measure ratio of each photodiode imaging pixel cell of imageing sensor 105 imaging array; PSU=(PS*PS)/cm ²;

QR, QG, QB, QIR are each imaging pixel cell photoelectricity quantum conversion constant of individual reception wavelength channel in imageing sensor 105 imaging array; The digital value YR of the pixel cell opto-electronic conversion of individual reception wavelength channel in imageing sensor 105 imaging array, YG, YB, YIR are further used as image original RAW pixel data I{YR, and YG, YB, YIR} export.

Imageing sensor 105 imaging array has the RGB-IR imaging pixel cell of at least 1920*1080 quantity.

The RGB-IR imaging pixel cell of imageing sensor 105 imaging array has 4 direction 2*2 transpostion interval array formats.

Fig. 4 is the pixel cell 4 direction 2*2 transpostion interval array format schematic diagram of the imaging array of the specific embodiment of the invention 1 imageing sensor 105RGB-IR wavelength channel;

Fig. 4 illustrates that every 4 direction 2*2 transpostion interval array formats repeat composition RGB-IR wavelength channel.The identical wavelength channel pixel of RGB-IR of imageing sensor 15 imaging array adopts 4 direction transpostion interval sampling modes, both that current direction was identical wavelength channel pixel Pixel_SC, horizontal direction be the pixel Pixel_SH of identical wavelength channel, vertical direction be the pixel Pixel_SV of identical wavelength channel, to angular direction is the pixel Pixel_SD of identical wavelength channel.4 the identical wavelength channel pixels indicated in concrete mode reference view 5.

Imageing sensor 105 described in the specific embodiment of the invention 1 can adopt Bare Die (COB), and encapsulation such as ShellUT CSP, NeoPAC CSP, TSV CSP etc. reduces volume further.

LED illumination light source (106RGB and 106IR-LED) described in the specific embodiment of the invention 1 has: RGB and the IR imaging wavelength of independent radiation.Further, RGB-LED lighting source (106RGB) has: the RGB imaging wavelength of radiation is mixed to form white visible light.

LED illumination light source 106 is made up of semiconductor light-emitting-diode, its physics forms identical with semiconductor photo diode, effect is contrary, and semiconductor light-emitting-diode changes outside radiated photons 200 by making the electron-hole pair of semiconductor PN produce photoelectricity quantum at applying electric current.

Further, the LED illumination light source (106RGB and 106IR-LED) described in the specific embodiment of the invention 1 has: the convex lens or the concave mirror that control half peak value radiation angle.Half described peak value radiation angle Ω meets:

Ω≥FOV；

Described FOV is the full filed angle of imaging system;

FOV≥2*arctan((DI*PS)/(2*EFL))；

Wherein: EFL is the equivalent focal length of optical imaging lens 102; DI is the quantity of the image planes diagonal pixels unit of imageing sensor 105 imaging array; PS is the physical size of the pixel cell of imageing sensor 105 imaging array;

LED is a kind of lambert's pointolite of 360 degree of angle radiation light in theory, adopts convex lens or concave mirror that the light collection of LED point light source radiation can be made to play the effect of the half peak value radiation angle controlling LED illumination light source.Convex lens can by optical plastic as optical grade PMMA, and the optical substrate materials such as optical grade PC manufacture, and concave mirror can be manufactured by high-reflectivity metal host material.

LED illumination light source (106RGB and 106IR-LED) described in the specific embodiment of the invention 1 has: one or more different angle of radiation position, for optimizing imaging viewing field and the image quality effect of photo electric imaging system, and provide the In vivo detection of the optical reflection of cornea diverse location.Be positioned on the left of imaging system optical axis 100 and/or the different angle of radiation positions (left side Psrl, right side Psrr, left and right sides Psrl & Psrr) on right side as adopted.

LED illumination light source (106RGB and 106IR-LED) described in the specific embodiment of the invention 1 has: the continuous or pulsed irradiation sessions synchronous with imageing sensor 105 and radiation intensity, for the image quality effect of combined optimization photo electric imaging system.LED illumination light source (106RGB and 106IR-LED) can adopt the encapsulation such as SMD surface patch to reduce volume further.

Optical filter (101 or 104) described in the specific embodiment of the invention 1 has: filter RGB and IR imaging wavelength, light, reflection and/or the light absorbed outside RGB and IR imaging wavelength range in transmission RGB and IR imaging wavelength range.

Further, the optical filter (101 or 104) described in the specific embodiment of the invention 1 has:

Light filterability Fi≤10.0% in RGB and IR imaging wavelength range,

Light filterability Fo >=99.9% outside RGB and IR imaging wavelength range;

Or equivalence

Light transmission Ti >=90.0% in RGB and IR imaging wavelength range,

Light transmission To≤0.1% outside RGB and IR imaging wavelength range.

Described optical filter (101 or 104) can at optical clear glass, coloured glass, the optical substrate materials such as optical plastic carry out the realization of surface multi-layer plated film, and optical filter (101 or 104) thickness≤0.3mm, further understand as the present invention is equivalent, described optical filter (101 or 104) can adopt and carry out multicoating equivalence on optical imaging lens 102 surface as optical substrate and substitute.

Optical imaging lens 102 described in the specific embodiment of the invention 1 has: physics Refractive focusing RGB and IR imaging wavelength.Further, the optical imaging lens 102 described in the specific embodiment of the invention 1 has RGB and IR imaging wavelength:

Surface maximum reflectivity Rmax≤1.0%, surperficial average reflectance Ravg≤0.35%;

Or equivalence

Surface minimum transmittance Tmin >=99.0%, surperficial average transmittance Tavg >=99.65%.

Above-described optical imaging lens 102 can at aspherics plastics as optical grade PMMA, and the optical substrate materials such as optical grade PC carry out surface multi-layer anti-reflection or anti-reflection coating realizes; And realize by 3-5P sheet aspherics plastics Shooting Technique, TTL optics overall length≤6mm.

Described optical imaging lens has: focal length EFL, and numerical aperture FNO meets:

3mm≤EFL≤6mm，2.0≤FNO≤4.0。

Optical imaging lens 102 is configured to universal focus lens, comprises liquid driven lens, liquid crystal drive lens, VCM voice coil loudspeaker voice coil drive lens, MEMS to drive in lens, EDOF wave-front phase modulation lens or wafer scale microarray lens any one.

Described liquid driven lens comprise fixed focus lenses, liquid lens, for controlling the voltage driver of liquid lens;

Described liquid crystal drive lens comprise fixed focus lenses, liquid crystal lens, for controlling the voltage driver of liquid crystal lens;

Described liquid driven lens and liquid crystal drive lens are regulated by the diopter that changes incident light both optical power to realize auto-focus function.

Described VCM voice coil loudspeaker voice coil drives lens to comprise fixed focus lenses, VCM voice coil loudspeaker voice coil, for the current driver of control VCM voice coil loudspeaker voice coil;

Described VCM voice coil loudspeaker voice coil drives lens by Jiao after change optics both optical image apart from regulating to realize auto-focus function.

Described MEMS (microelectromechanical systems) drives lens to comprise fixed focus lenses, and MEMS lens, for the electrostatic actuator of control MEMS lens.

Described MEMS drives lens by changing the optical position of MEMS lens to realize auto-focus function.

Described wafer scale array lenticule, is calculated to be picture (Computational Imaging) by microlens array and realizes the dark Reconstruction of The Function of 3D panorama.

Described EDOF wave-front phase modulation lens comprise lens, wave-front phase modulation optical element;

Described EDOF wave-front phase modulation is by after the modulation of wave-front phase modulation optical element, and liftering demodulation is rebuild and realized extended depth-of-field function.

Due to above-described EDOF wave-front phase modulation lens, to have cost low, and volume is little, and structure is simple, without advantages such as complicated drivings.So the specific embodiment of the invention 1 is preferably described in detail for EDOF wave-front phase modulation lens, EDOF wave-front phase modulation lens imaging, it ensures maximizing field depth (the depth of field) scope under luminous flux condition with traditional optical imaging system more than 10 times, simplifies the design of optical system visual field (view of field) and aberration correction simultaneously.

Wave-front phase modulation optical element is as the phase place pupil between lens.

Definition wave-front phase modulation optical element has odd symmetric pupil phase modulation function Φ (x, y):

$\mathrm{\Φ}(x,y)=\underset{m=0}{\overset{M}{\mathrm{\Σ}}}\underset{n=0}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\α}}_{\mathrm{mn}}{x}^m{y}^n$

Φ(-x，-y)＝-Φ(x，y)

Wherein: M, N are exponent number, α mn is numeric factors.

The specific embodiment of the invention 1 considers the requirement such as numerical evaluation and the actual complexity manufactured when practical application, the general low order adopting exponent number to be less than 9 is exponent number as adopted 7,5,3.

The wave-front phase modulation optical element of the specific embodiment of the invention 1 manufactures and designs by micron-sized aspheric surface injection moulding process, can reduce costs also structure simple, be easy to batch production.

Wave-front phase modulation optical system has optical point spread function PSF (u, v; θ)

PSF(u，v；θ)＝|h(u，v；θ)| ²

$h(u,v;\mathrm{\θ})=\frac{1}{\mathrm{\λf}\sqrt{A}}\underset{-\∞}{\overset{+\∞}{\∫\∫}}P(x,y)\exp \left\{i\right[\frac{2\mathrm{\π}}{\mathrm{\λf}}(\mathrm{ux}+\mathrm{vy})+\mathrm{\Φ}(x,y)+\mathrm{\θ}(x^2+y^2)+\mathrm{Zernike}(x,y)\left]\right\}\mathrm{dxdy}$

$\mathrm{\θ}=\frac{A}{\mathrm{\λ}}(\frac{1}{f}-\frac{1}{d_o}-\frac{1}{d_i})$

Wherein: the pupil function that P (x, y) is optical system,

P (x, y)=1, when integral parameter (x, y) is included within the scope of pupil;

P (x, y)=0, when integral parameter (x, y) is not included within the scope of pupil;

Pupil function also can be of equal value the field of definition areal extent being expressed as two-dimentional definite integral, the field of definition area integral scopes namely limiting 2 dimension definite integral are pupil scope.The point that (x, y) is pupil plane, (u, v) is the point of picture plane.

θ is diffracted wave aberration or defocuses parameter; λ is imaging wavelength, and f is the equivalent focal length of optical system, d _ofor entrance pupil plane is to object plane distance, d _ifor exit pupil plane is to picture plan range, A is pupil area, the Zernike aberration function that Zernike (x, y) is optical system;

Reality is considered optical system has global characteristics, the employing polar coordinates integral representation that above-mentioned two-dimensional integration also can be of equal value.According to the known point spread function PSF of the definition of pupil phase modulation function Φ (x, y) (u, v; θ) be even symmetry.

There is modulation transfer function (MTF) and diffracted wave aberration (diffraction-aberration) space/frequency domain pupil phase modulation function Φ (x in conjunction with optimized wave-front phase modulation optical system, y) satisfy condition: diffracted wave aberration optimization degree J global minimization, J=0 in theory.

Wherein: diffracted wave aberration optimization degree J determines by give a definition:

$J={\∫}_{-\mathrm{\θ}0}^{\mathrm{\θ}0}{\∫\∫\left|(\∂/\∂\mathrm{\θ})\right[\mathrm{PSF}(u,v;\mathrm{\θ})\left]\right|}^2\mathrm{dudvd\θ}$

Wherein: [-θ 0, θ 0] is for the diffracted wave aberration of specifying during practical application or defocus parameter symmetrical range;

Simultaneously according to optical theory, wave-front phase modulation optical system has optical transfer function OTF (s, t; θ) be PSF (u, v; Fourier transfer pair θ), and have following inference:

$J={\∫}_{-\mathrm{\θ}0}^{\mathrm{\θ}0}{\∫\∫\left|(\∂/\∂\mathrm{\θ})\right[\mathrm{OTF}(s,t;\mathrm{\θ})\left]\right|}^2\mathrm{dsdtd\θ}$

Modulation transfer function optimization degree M determines by give a definition:

$\begin{array}{c}M={\∫}_{-\mathrm{\θ}0}^{\mathrm{\θ}0}\∫\∫{\left|\right[\mathrm{PSF}(u,v;\mathrm{\θ})\left]\right|}^2\mathrm{dudvd\θ}\\ ={\∫}_{-\mathrm{\θ}0}^{\mathrm{\θ}0}\∫\∫{\left|\right[\mathrm{OTF}(s,t;\mathrm{\θ})\left]\right|}^2\mathrm{dsdtd\θ}\\ ={\∫}_{-\mathrm{\θ}0}^{\mathrm{\θ}0}\∫\∫{\left|\right[\mathrm{MTF}(s,t;\mathrm{\θ})\left]\right|}^2\mathrm{dsdtd\θ}\end{array}$

According to above-mentioned definition and inference provable pupil phase modulation function Φ (x, y) meeting under diffracted wave aberration optimization degree J global minimization condition, wave-front phase modulation optical system has modulation transfer function and diffracted wave aberration space/frequency domain in conjunction with optimization.And in theory under J=0 condition, Wave-front phase is fixed constant relative to diffracted wave aberration, original image can be recovered by simple digital demodulation process.

Picture plane picture O (u, v) of imageing sensor 105 imaging is recovered by digital signal processing image demodulation, and result rebuilds original digital image I (x, y).Digital signal processing image demodulation recovers specifically:

I(x，y)＝H(u，v)*g(u，v)＝∫∫H(x-u，y-v)g(u，v)du dv

Wherein, H (u, v)=O (u, v)-N (u, v);

The picture plane picture that O (u, v) is imageing sensor 105 imaging, the equivalent noise function that N (u, v) is photo electric imaging system, g (u, v)=F ^-1(1/MTF (s, t)), i.e. MTF (s, t) Fourier of falling inverse of a number conversion, MTF (s, t) is predetermined modulation transfer function (MTF) function of wave-front phase modulation optical system, and * represents 2 dimension convolution of functions integrations.

Due to MTF (s, t) above-mentioned predetermined optical system is determined, therefore g (u, v) also determine, and g (u, v) convolution yardstick is also compactly support, and nearlyer step equivalent noise function N (u, v) is also determined for above-mentioned predetermined photo electric imaging system.So above-mentioned digital signal processing image demodulation recovers to express with mathematics discrete form, the specific embodiment of the invention 1 can optimize integer code by digital signal processing appts real-time implementation such as FPGA or DSP, or by the software algorithm real-time implementation of processor chips 109.

The specific embodiment of the invention 1, has different optical imaging requirements, imaging wavelength, pixel spatial resolution, optical magnification owing to iris recognition photo electric imaging system and preposition photo electric imaging system, optical space resolution, focusing task object distance range.

Above-described iris recognition photo electric imaging system has following optical imagery requirement:

The imaging wavelength WI of iris recognition photo electric imaging system meets:

800nm≤WI≤900nm or 750nm≤WI≤850nm;

The focusing task object distance WD of iris recognition photo electric imaging system meets:

10cm≤WD≤30cm。

The pixel spatial resolution PSR (pixel spatial resolution) of iris recognition photo electric imaging system should meet: PSR >=13pixel/mm;

The optical magnification OM (optical magnification) of iris recognition photo electric imaging system, should meet:

OM＝PS*PSR

Wherein said:

PS is the physical size of each imaging pixel cell of imageing sensor;

PSR is the pixel spatial resolution of iris recognition photo electric imaging system;

The optical space resolution OSRI (optical spatial resolution of image of plane) of iris recognition photo electric imaging system should meet in image space plane: when modulation transfer function 60% (MTF=0.6), 1/ (4*PS)≤OSRI≤1/ (2*PS) lp/mm (line is to every millimeter).

Described preposition photo electric imaging system has following optical imagery and requires:

The imaging wavelength WI of preposition photo electric imaging system meets:

400nm≤WI≤700nm or 400nm≤WI≤650nm

The focusing task object distance WD of preposition photo electric imaging system meets:

30cm≤WD≤100cm。

The pixel spatial resolution PSR (pixel spatial resolution) of preposition photo electric imaging system should meet: PSR≤4pixel/mm;

The optical magnification OM (optical magnification) of preposition photo electric imaging system, should meet:

OM＝PS*PSR

Wherein said:

PS is the physical size of each imaging pixel cell of imageing sensor;

PSR is the pixel spatial resolution of preposition photo electric imaging system;

The optical space resolution OSRI (optical spatial resolution of image of plane) of preposition photo electric imaging system should meet in image space plane: when modulation transfer function 60% (MTF=0.6), 1/ (4*PS)≤OSRI≤1/ (2*PS) lp/mm (line is to every millimeter).

The formation method of preposition photo electric imaging system of the present invention, comprises the following steps:

1. processor chips 109 control LED current driver 108 driving LED lighting source 106 (106RGB) and produce RGB imaging wavelength continuously or the radiation of synchronizing pulse pattern;

2. filter and physics Refractive focusing through RGB imaging wavelength, imaging array individual reception 3 RGB wavelength channels of imageing sensor 105 carry out overall frame pattern or rolling row mode reset integration (exposure) and read;

3. processor chips 109 obtain the image original RAW pixel data I{YR that in imaging array, 3 identical RGB wavelength channels export respectively, YG, YB};

4. processor chips 109 are according to image original RAW pixel data I{YR, YG, YB} and pixel cell opto-electronic conversion relation, drive imageing sensor 105 and LED illumination light source 106 and optical imaging lens 102 to focus on, realize FEEDBACK CONTROL;

5. processor chips 109 are respectively to the original RAW data I{YR of 3 identical RGB wavelength channels in imaging array, carry out interpolated reconstruction between YG, YB} pixel;

6. processor chips 109 export the image I{r after interpolated reconstruction, and g, b}, each pixel comprises rgb pixel value respectively.

Further explain, in above-described step, the imaging array of imageing sensor 105 is N*M RGB-IR image-generating unit, the original RAW data I{YR of 3 identical RGB wavelength channels, YG, YB} is each is respectively the individual quantity image-generating unit of (N/2) * (M/2), and (N/2) * (M/2) the individual quantity image-generating unit pixel interpolating of each identical wavelength channel is redeveloped into N*M number of pixels.Between (N/2) * (M/2) pixel of identical wavelength channel, carry out interpolated reconstruction is respectively N*M number of pixels, and both each pixel comprised rgb pixel value respectively.

Further explain, in above-described step 4, pixel cell opto-electronic conversion relation comprises formula EQ3, EQ4, EQ5.The image original RAW pixel data I{YR that processor chips 109 can export according to imageing sensor 105, YG, YB} and corresponding formula EQ3, EQ4, EQ5, the reset integral time of FEEDBACK CONTROL imageing sensor 105, Digital and analog gain is arranged, the radiation intensity of FEEDBACK CONTROL LED current driver 108 driving LED lighting source 106, angle of radiation position, and radiated time is for improving image quality.

Optical imaging lens 102 focuses on by calculating image original RAW pixel data I{YR, and the focus mass value FEEDBACK CONTROL of YG, YB} realizes preposition photo electric imaging system focusing task object distance WD at least 30cm-100cm.Traditional Atomatic focusing method can be adopted as focus quality peak-peak iterative search.

Processor chips 109 can pass through light sensor (according to situation about using, so independent additional device can be set in processor chips 109, its method arranged is present known technology, or such light sensor function can also be realized by commercially purchasing corresponding processor chips) according to current environmental light brightness, control the radiation intensity of LED current driver 108 driving LED lighting source 106RGB.Further, if when the specific embodiment of the invention 1 light sensor judges to be greater than more than 500-1000lux according to current environmental light brightness, LED current driver drives LED illumination light source 106RGB is closed.

Further, the original RAW pixel data of the image that processor chips 109 can be exported by imageing sensor 105, the optical black level performing imageing sensor corrects BLC, RGB passage Automatic white balance AWB, RGB channel color matrix correction CCM, rims of the lens shadow correction lens shading correction, automatic exposure FEEDBACK CONTROL AEC, automatic gain FEEDBACK CONTROL AGC etc.

The formation method of iris recognition photo electric imaging system, comprises the following steps:

1. processor chips 109 control LED current driver 108 driving LED lighting source 106 (106IR) and produce IR imaging wavelength continuously or the radiation of synchronizing pulse pattern;

2. filter and physics Refractive focusing through IR imaging wavelength, imageing sensor 105 imaging array individual reception IR wavelength channel carries out overall frame pattern or rolling row mode reset integration (exposure) and reads;

3. processor chips 109 obtain the image original RAW pixel data I{YIR} that in imaging array, identical IR wavelength channel exports;

4. processor chips 109 are according to image original RAW pixel data I{YIR} and pixel cell opto-electronic conversion relation, drive imageing sensor 105 and LED illumination light source 106 and optical imaging lens 102 to focus on, realize FEEDBACK CONTROL;

5. in processor chips 109 pairs of imaging arrays identical IR wavelength channel original RAW data I{YIR} pixel between carry out interpolated reconstruction;

6. processor chips 109 export the image I{ir} after interpolated reconstruction.

Further explain, in above step, the imaging array of imageing sensor 105 is N*M RGB-IR image-generating unit, the original RAW data I{YIR} of identical IR wavelength channel is the individual quantity image-generating unit of (N/2) * (M/2), and (N/2) * (M/2) the individual quantity image-generating unit pixel interpolating of identical IR wavelength channel is redeveloped into N*M number of pixels.Between (N/2) * (M/2) pixel of identical IR wavelength channel, carry out interpolated reconstruction is N*M number of pixels.

Further explain, above-described step 4 pixel cell opto-electronic conversion relation comprises formula EQ6.The original RAW pixel data of image that processor chips 109 can export according to imageing sensor 105 and formula EQ6, the reset integral time of FEEDBACK CONTROL imageing sensor 105, Digital and analog gain is arranged, the radiation intensity of FEEDBACK CONTROL LED current driver 108 driving LED lighting source 106, angle of radiation position, and radiated time is for improving image quality.The focus mass value FEEDBACK CONTROL that optical imaging lens 102 focuses on by calculating image original RAW pixel data I{YIR} realizes iris recognition photo electric imaging system focusing task object distance WD at least 10cm-30cm.Traditional Atomatic focusing method can be adopted as focus quality peak-peak iterative search.

Further, the original RAW pixel data of the image that processor chips 109 can be exported by imageing sensor 105, the optical black level performing imageing sensor corrects BLC, automatic exposure FEEDBACK CONTROL AEC, automatic gain FEEDBACK CONTROL AGC.

As the equivalent simplification citing understood of the specific embodiment of the invention 1, the formation method of described iris recognition photo electric imaging system, comprises the following steps:

1. processor chips 109 control LED current driver 108 driving LED lighting source (106IR) and produce IR imaging wavelength continuously or the radiation of synchronizing pulse pattern;

2. filter and physics Refractive focusing through IR imaging wavelength, imageing sensor 105 imaging array individual reception IR wavelength channel carries out overall frame pattern or rolling row mode reset integration (exposure) and reads;

3. processor chips 109 obtain the image original RAW pixel data I{YIR} that in imaging array, identical IR wavelength channel exports;

4. processor chips 109 are according to image original RAW pixel data I{YIR} and pixel cell opto-electronic conversion relation, drive imageing sensor 105 and LED illumination light source (106IR) and optical imaging lens 102 to focus on, realize FEEDBACK CONTROL;

5. in processor chips 109 pairs of imaging arrays, the original RAW data I{YIR} pixel of identical IR wavelength channel exports.

Above-mentioned simplification citing is understood as the specific embodiment of the invention 1 is equivalent, and the formation method of described iris recognition photo electric imaging system is removed between original RAW data I{YIR} pixel and carried out interpolated reconstruction step.

4 direction neighborhood pixels original RAW interpolation of data value-based algorithm between identical wavelength channel pixel in interpolated reconstruction employing imaging array described in the specific embodiment of the invention 1.

Described interpolation algorithm comprises tradition:

The most contiguous interpolation Nearest-neighbor interpolation, linear interpolation Linear interpolation, bilinear interpolation bilinear interpolation, bicubic interpolation bicubic interpolation, spline interpolation Spline interpolation etc.

Consider that iris or this kind of image texture of face have nature continuity Characteristics, based on the correlativity between image pixel, the invention provides interpolation algorithm more fast and effectively, simultaneously with reference to figure 5 schematic diagram, comprise the following steps:

1. the pixel value of the image original RAW interpolation pixel data 4 direction transpostion interval of the identical wavelength channel output of sampling, be respectively: the identical wavelength channel pixel Pixel_SC in current direction, the pixel Pixel_SH of the identical wavelength channel of horizontal direction, the pixel Pixel_SV of the identical wavelength channel of vertical direction, to the pixel Pixel_SD of the identical wavelength channel of angular direction;

The transpostion interval sampling of identical wavelength channel pixel 4 direction is because the pixel cell of the identical wavelength channel of imaging array is according to 4 direction 2*2 transpostion interval array formats.

2. calculate interpolation pixel data 4 direction neighborhood pixels interpolation, Pixel_C, Pixel_H, Pixel_V, Pixel_D:

The pixel Pixel_C=Pixel_SC in current direction;

The neighborhood pixels interpolation Pixel_H=(Pixel_SH+Pixel_SC)/2 of horizontal direction;

The neighborhood pixels interpolation Pixel_V=(Pixel_SV+Pixel_SC)/2 of vertical direction;

To the neighborhood pixels interpolation Pixel_D=(Pixel_SH+Pixel_SV+Pixel_SD+Pixel_SC)/4 of angular direction;

3. circulation step 1-step 2, traversal calculates original RAW interpolation pixel datas all in image, forms finally complete interpolated image data.

As equivalent understanding, the neighborhood pixels interpolation algorithm in above-mentioned 4 directions in like manner can promote interpolation algorithm.

The invention provides a kind of false proof divine force that created the universe biopsy method of iris of high security, having, to iris counterfeit, there is real-time detectability, for ensureing the security of bio-identification itself, comprising:

Should adopt and have with one of under type or multiple:

The biological organism optical activity characteristic real-time detection method that the radiation of 1.RGB-IR imaging wavelength produces;

The pupil iris diameter rate of change biological tissue activity characteristic real-time detection method that the radiation of 2.RGB-IR imaging wavelength produces;

The optics of cornea reflection position real-time detection method that the radiation of 3.RGB-IR imaging wavelength produces;

4. the activity characteristic real-time detection method of eyeball physiological movement.

The above-described iris false proof divine force that created the universe biopsy method flow processing speed that is detected as in real time is greater than image acquisition frame rate; Described image acquisition frame rate is 120 fps, 90fps, 60fps, 30fps, and the higher iris of image acquisition frame rate false proof divine force that created the universe biopsy method reliability is stronger.

The biological organism optical activity characteristic real-time detection method that RGB-IR imaging wavelength radiation of the present invention produces, comprises the following steps:

1. processor chips 109 control LED current driver 108 driving LED lighting source 106 (106RGB and 106IR) and produce RGB imaging wavelength radiation and the radiation of IR imaging wavelength in real time;

2. the RGB wavelength channel of processor chips 109 real-time image acquisition sensor 105 imaging array and real time imagery image IRGB and IIR of IR wavelength channel output;

3. processor chips 109 distinguish the contrast C sk of RGB image IRGB and IR image IIR in real-time calculation procedure 2, Csi, Cip, Csip, Ckip data, are respectively IRGB_Csk, IRGB_Csi, IRGB_Cip, IRGB_Csip, IRGB_Ckip, IIR_Csk IIR_Csi, IIR_ip, IIR_Csip, IIR_Ckip;

Wherein:

Csk is the contrast between skin area and iris region;

Csi is the contrast between sclera region and iris region;

Cip is the contrast between iris region and pupil region;

Csip is sclera region, the mutual contrast between iris region and pupil region;

Ckip is skin area, the mutual contrast between iris region and pupil region;

Csk＝S(Iskin)/S(Iiris)；

Csi＝S(Isclera)/S(Iiris)；

Cip＝S(Iiris)/S(Ipupil)；

Csip＝(S(Isclera)-S(Iiris))/(S(Iiris)-S(Ipupil))；

Ckip＝(S(Iskin)-S(Iiris))/(S(Iiris)-S(Ipupil))；

Ipupil represents pupil region pixel;

Iiris represents iris region pixel;

Isclera represents sclera region pixel;

Iskin represents skin area pixel;

Described function S is respective regions pixels statistics valuation functions, and the method that described pixels statistics valuation functions adopts comprises: statistics with histogram, frequency statistics, mean value is added up, weighted mean Data-Statistics, middle Data-Statistics, energy value is added up, variance statistic, space-frequency domain wave filter etc.; Respective regions pixels statistics valuation functions S of the present invention is not limited to above-mentioned citing, and additive method should by equivalent understanding.

4. processor chips 109 calculate picture contrast activity change rate Fsk and Fsi, Fip, Fsip, the Fkip of RGB imaging wavelength radiation and the radiation of IR imaging wavelength respectively in real time;

Wherein:

Fsk＝IRGB_Csk/IIR_Csk*100％；

Fsi＝IRGB_Csi/IIR_Csi*100％；

Fip＝IIR_Cip/IRGB_Cip*100％；

Fsip＝IRGB_Csip/IIR_Csip*100％；

Fkip＝IRGB_Ckip/IIR_Ckip*100％；

5. according to RGB-IR imaging wavelength irradiating biological organism optical activity characteristic preset value, with data value Fsk in step 4, Fsi, Fip, Fsip, the active contrast respective change rate of Fkip, judges any one or multinomial condition Fsk > 300%, Fsi > 300%, Fip > 300%, Fsip > 900%, Fkip > 900%, realizes detecting iris condition of living organism in real time.

Fig. 6 is the contrasted zones schematic diagram that the specific embodiment of the invention 1 defines iris image.As shown in schematic diagram 6 indicates, wherein Isclera, Iiris, Ipupil, Iskin definition:

1 represents pupil region pixel for pupil region Ipupil;

2 represent iris region pixel for iris region Iiris;

3 represent sclera region pixel for sclera region Isclera;

4 represent skin area pixel for skin area Iskin;

The pupil iris diameter rate of change bioactive properties detection method that RGB-IR imaging wavelength radiation described in the specific embodiment of the invention 1 produces, comprises the following steps:

1. processor chips 109 control LED current driver 108 driving LED lighting source 106 (106RGB and 106IR) and produce varying strength dil in real time respectively, RGB and IR imaging wavelength radiation under con and time conditions, stimulates pupil to produce biological tissue activity enlargement and contraction;

2. real time imagery image Idil and Icon under the different radiated time that exports of the RGB-IR wavelength channel of processor chips 109 respectively real-time image acquisition sensor 105 imaging array and strength condition;

3. processor chips 109 respectively in real-time calculation procedure 2 in image Idil and Icon the pupil of iris image with iris diameter than ρ data, be respectively ρ dil and ρ con;

ρ＝Dpupil/Diris，

Described Dpupil is pupil diameter length in pixels;

Described Diris is iris diameter length in pixels;

4. processor chips 109 calculate corresponding activity change rate Δ ρ=(ρ dil-ρ con) * 100% in real time;

5. according to the preset value of the biological tissue activity enlargement and contraction of the real-time stimulation pupil generation under varying strength and time conditions, with the corresponding activity change rate of data value Δ ρ in step 4, judge Δ ρ > 10% condition, realize detecting iris condition of living organism in real time.

Fig. 7 is pupil and the iris diametric representation that the present invention defines iris image.As shown in schematic diagram 7 indicates, wherein Dpupil, Diris definition:

Described Dpupil is pupil diameter length in pixels;

Described Diris is iris diameter length in pixels;

The optics of cornea reflection position detection method that RGB-IR imaging wavelength radiation of the present invention produces, comprises the following steps:

1. processor chips 109 control LED current driver 108 driving LED lighting source 106 (106RGB or 106IR) and produce left side Psrl in real time respectively, right side Psrr and side, left and right 2 Psrl & Psrr diverse location condition under the radiation of RGB and IR imaging wavelength, be formed in the optics of cornea reflection spot of diverse location;

2. the real time imagery image Isr of the RGB-IR wavelength channel output of processor chips 109 difference real-time image acquisition sensor 105 imaging array;

3. processor chips 109 distinguish the optics of cornea reflection point position data Psr of image Isr in real-time calculation procedure 2;

4. the preset value under diverse location condition is produced respectively in real time according to LED illumination light source 106, and the optics of cornea reflection point position Psr calculated in step 3, judge whether optics of cornea reflection point position Psr meets corresponding LED illumination light source locality condition:

If LED illumination light source position is Psrl, Psr=Psrl should be met;

If LED illumination light source position is Psrr, Psr=Psrr should be met;

If LED illumination light source position is Psrl & Psrr, Psr=Psrl & Psrr should be met;

Realize detecting iris condition of living organism in real time.

Fig. 8 is the optical reflection point schematic diagram that the present invention defines the cornea diverse location of iris image.As shown in schematic diagram 8 indicates, wherein Psrl, Psrr, Psrl & Psrr defines:

Described Psrl is the optics of cornea reflection spot that LED illumination light source produces leftward position;

Described Dsrr is the optics of cornea reflection spot that LED illumination light source produces right positions;

Described Psrl & Psrr is the optics of cornea reflection spot that LED illumination light source produces left and right 2 side positions.

The activity characteristic real-time detection method of eyeball physiological movement of the present invention, comprises the eyelid movement activity characteristic of the generation detecting eyeball physiological movement in real time, comprises the following steps:

1. processor chips 109 control LED current driver 108 driving LED lighting source 106 (106RGB or 106IR) and produce the radiation of RGB-IR imaging wavelength in real time;

2. the real time imagery image Iem of the RGB-IR wavelength channel output of processor chips 109 real-time image acquisition sensor 105 imaging array;

3. the eyelid movement characteristic level data EM of the generation of the eyeball physiological movement of image Iem in the real-time calculation procedure 2 of processor chips 109;

Wherein:

The eyelid movement characteristic degree EM of the generation of eyeball physiological movement is defined as:

EM＝Visual_Iris/All_Iris*100％；

All_Iris is the pixel quantity in iris entire area region in image Iem;

Visual_Iris is the pixel quantity in the iris useful area region that in image Iem, eyelid movement is formed;

4. calculate the activity change Shuai Zhi ⊿ EM of the eyelid movement characteristic degree EM of the generation of eyeball physiological movement in real time;

5. according to the activity change rate preset value of the eyelid movement characteristic degree of the generation of eyeball physiological movement, with the activity change rate value ⊿ EM of the eyelid movement characteristic level data EM that the eyeball physiological movement calculated in step 4 produces; sentence disconnected ⊿ EM > 10% condition, realize detecting iris condition of living organism in real time.

Fig. 9 is the schematic diagram that the present invention defines the eyelid movement characteristic degree of the generation of eyeball physiological movement.As shown in schematic diagram 9 indicates, in image, dotted line All_Iris represents the pixel quantity in iris entire area region, and solid line Visual_Iris represents the pixel quantity in iris useful area region.

The activity characteristic real-time detection method of eyeball physiological movement of the present invention, comprises the activity characteristic from axle stravismus of the generation detecting eyeball physiological movement in real time, comprises the following steps:

1. processor chips 109 control LED current driver 108 driving LED lighting source 106 (106RGB or 106IR) and produce the radiation of RGB-IR imaging wavelength in real time;

2. the real time imagery image Ieg of the RGB-IR wavelength channel output of processor chips 109 real-time image acquisition sensor 105 imaging array;

3. in the real-time calculation procedure 2 of processor chips the eyeball physiological movement of image Ieg generation from axle stravismus characteristic level data EG;

Wherein:

Being defined as from axle stravismus characteristic degree EG of the generation of eyeball physiological movement:

EG＝S_Iris/L_Iris*100％；

S_Iris is from the iris minor axis length in pixels that axle stravismus is formed in image Ieg;

L_Iris is from the iris major axis length in pixels that axle stravismus is formed in image Ieg;

4. calculate the activity change Shuai Zhi ⊿ EG from axle stravismus characteristic degree EG in the generation of eyeball physiological movement in real time;

5. according to the activity change rate preset value from axle stravismus characteristic degree of the generation of eyeball physiological movement, with the activity change rate value ⊿ EG from axle stravismus characteristic level data EG of the generation of the eyeball physiological movement calculated in step 4; sentence disconnected ⊿ EG > 10% condition, realize detecting iris condition of living organism.

Figure 10 is the schematic diagram from axle stravismus physiological movement activity characteristic degree of the generation of this definition eyeball physiological movement.Shown in as illustrated, Figure 10 indicates, in image, S_Iris represents iris minor axis length in pixels, and L_Iris represents iris major axis length in pixels.

The specific embodiment content that the present invention describes and technical characteristic, can be implemented in the scope of identical or equivalent understanding, as imaging wavelength range change, imageing sensor changes, LED illumination light source changes, and optical filter changes, and optical imaging lens changes, light chopper, device substitutes also should by equivalent understanding.

Finally, it is also to be noted that what enumerate above is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.

Claims (17)

1. mobile terminal is preposition comprises processor chips, LED current driver, LED illumination light source, optical filter, optical imaging lens, imageing sensor composition with iris recognition integrated optical electric imaging system; It is characterized in that: the optical path comprising optical path for preposition photo electric imaging system and iris recognition photo electric imaging system;

The optical path of described preposition photo electric imaging system comprises:

LED illumination light source radiation RGB imaging wavelength, optical filter filters RGB imaging wavelength, optical imaging lens physics Refractive focusing RGB imaging wavelength, imageing sensor imaging array individual reception RGB wavelength channel;

The optical path of described iris recognition photo electric imaging system comprises:

LED illumination light source radiation IR imaging wavelength, optical filter filters IR imaging wavelength, optical imaging lens physics Refractive focusing IR imaging wavelength, imageing sensor imaging array individual reception IR wavelength channel;

The imaging array of described imageing sensor is configured to the RGB-IR wavelength channel with individual reception;

Described LED illumination light source is configured to have the radiated wavelength range mutually mated with imageing sensor RGB-IR imaging wavelength passage;

Described optical filter is configured to have the wavelength-filtered scope of mutually mating with imageing sensor RGB-IR imaging wavelength passage;

Described optical imaging lens is configured to have the focusing wavelength coverage of mutually mating with imageing sensor RGB-IR imaging wavelength passage;

Described processor chips are configured to for driving imageing sensor to arrange, the image pixel value data that control chart image-position sensor RGB-IR wavelength channel imaging array exports, and drived control LED current driver;

Described LED current driver is configured to for drived control LED illumination light source radiation intensity, angle of radiation position, and radiated time;

Described optical imaging lens is configured to universal focus lens, comprises liquid driven lens, liquid crystal drive lens, VCM voice coil loudspeaker voice coil drive lens, MEMS to drive in lens, EDOF wave-front phase modulation lens or wafer scale array lenticule any one.

2. the preposition and iris recognition integrated optical electric imaging system of mobile terminal according to claim 1 is characterized in that: it be 400-700nm, IR imaging wavelength is 800-900nm that described imaging wavelength comprises RGB imaging wavelength;

Or

RGB imaging wavelength is 400-650nm, IR imaging wavelength is 750-850nm;

Described preposition photo electric imaging system adopts RGB imaging wavelength, and focusing task object distance WD is at least at 30-100cm;

Described iris recognition photo electric imaging system adopts IR imaging wavelength, and focusing task object distance WD is at least at 10-30cm;

Described LED illumination light source has: RGB and the IR imaging wavelength of independent radiation, one or more different angle of radiation position, the continuous or pulsed irradiation sessions synchronous with imageing sensor and radiation intensity;

Described optical filter has: filter RGB and IR imaging wavelength, the light in transmission RGB and IR imaging wavelength range, reflection and/or the light absorbed outside RGB and IR imaging wavelength range;

And meet following span:

Light filterability Fi≤10.0% in RGB and IR imaging wavelength range,

Light filterability Fo >=99.9% outside RGB and IR imaging wavelength range;

Or equivalence

Light transmission Ti >=90.0% in RGB and IR imaging wavelength range,

Light transmission To≤0.1% outside RGB and IR imaging wavelength range;

Described optical imaging lens has: physics Refractive focusing RGB and IR imaging wavelength;

It is to RGB and IR imaging wavelength:

Surface maximum reflectivity Rmax≤1.0%, surperficial average reflectance Ravg≤0.35%;

Or equivalence

Surface minimum transmittance Tmin >=99.0%, surperficial average transmittance Tavg >=99.65%;

And its focal length EFL, numerical aperture FNO meet:

3mm≤EFL≤6mm，2.0≤FNO≤4.0。

3. mobile terminal according to claim 1 is preposition is characterized in that with iris recognition integrated optical electric imaging system: described iris recognition photo electric imaging system has following optical imagery and requires:

The imaging wavelength WI of iris recognition photo electric imaging system meets:

800nm≤WI≤900nm or 750nm≤WI≤850nm;

The focusing task object distance WD of iris recognition photo electric imaging system meets:

10cm≤WD≤30cm；

The pixel spatial resolution PSR (pixel spatial resolution) of iris recognition photo electric imaging system should meet: PSR >=13pixel/mm;

The optical magnification OM (optical magnification) of iris recognition photo electric imaging system, should meet:

OM＝PS*PSR；

Wherein said:

PS is the physical size of each imaging pixel cell of imageing sensor;

PSR is the pixel spatial resolution of iris recognition photo electric imaging system;

The optical space resolution of iris recognition photo electric imaging system should meet in image space plane: during at modulation transfer function 60%, 1/ (4*PS)≤OSRI≤1/ (2*PS).

4. the preposition and iris recognition integrated optical electric imaging system of mobile terminal according to claim 1, is characterized in that: described preposition photo electric imaging system has following optical imagery and requires:

The imaging wavelength WI of preposition photo electric imaging system meets:

400nm≤WI≤700nm or 400nm≤WI≤650nm

The focusing task object distance WD of preposition photo electric imaging system meets:

30cm≤WD≤100cm；

The pixel spatial resolution PSR of preposition photo electric imaging system should meet: PSR≤4pixel/mm;

The optical magnification OM of preposition photo electric imaging system, should meet:

OM＝PS*PSR；

Wherein said:

PS is the physical size of each imaging pixel cell of imageing sensor;

PSR is the pixel spatial resolution of preposition photo electric imaging system;

The optical space resolution OSRI of preposition photo electric imaging system should meet in image space plane: during at modulation transfer function 60%, 1/ (4*PS)≤OSRI≤1/ (2*PS) lp/mm.

5. the preposition and iris recognition integrated optical electric imaging system of mobile terminal according to claim 1, is characterized in that: each imaging pixel cell of described imageing sensor imaging array individual reception RGB-IR wavelength channel, comprising:

For converging the lenticule of photon;

For the independent RGB-IR wavelength channel filter layer of filtered photons;

Photon for catching incident wavelength carries out the semiconductor photo diode of photoelectricity quantum conversion;

The reset anomalous integral sensing circuit of charge voltage is read for the anomalous integral that resets;

For the analog-digital converter ADC that conversion voltage value is quantized values.

6. the preposition and iris recognition integrated optical electric imaging system of mobile terminal according to claim 5, is characterized in that: described lenticule has and converges photon efficiency or fill factor, curve factor FF >=95%;

Described RGB-IR wavelength channel filter layer produces independently RGB-IR wavelength channel for filtering;

B wavelength channel: 400nm – 500nm;

G wavelength channel: 500nm – 600nm;

R wavelength channel: 600nm – 700nm;

IR wavelength channel: 800nm – 900nm;

Or

B wavelength channel: 400nm – 500nm;

G wavelength channel: 500nm – 590nm;

R wavelength channel: 590nm – 670nm;

IR wavelength channel: 750nm – 850nm;

Described filter layer has RGB-IR channel wavelength distribution function FR (λ), FG (λ), FB (λ), FIR (λ);

The described semiconductor photo diode photon had by receiving incident wavelength forms electron-hole pair at semiconductor PN and produces the conversion of photoelectricity quantum;

The photon that described semiconductor photo diode receives incident wavelength carries out the conversion of photoelectricity quantum, the photoelectricity quantum conversion constant QR of RGB-IR incident wavelength, and QG, QB, QIR, be defined as follows:

$\mathrm{QR}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}r\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FR}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QG}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}g\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FG}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QB}={\∫}_{\mathrm{\λ}=400\mathrm{nm}}^{\mathrm{\λ}=700\mathrm{nm}}b\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FB}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

$\mathrm{QIR}={\∫}_{\mathrm{\λ}=800\mathrm{nm}}^{\mathrm{\λ}=900\mathrm{nm}}\mathrm{ir}\left(\mathrm{\λ}\right)f\left(\mathrm{\λ}\right)S\left(\mathrm{\λ}\right)L\left(\mathrm{\λ}\right)\mathrm{FIR}\left(\mathrm{\λ}\right)\mathrm{d\λ}$

(EQ1)

Described λ is imaging wavelength, g (λ), r (λ), b (λ), ir (λ) is respectively the photoelectricity conversion quantum efficiency sensitivity function of the photodiode RGB-IR wavelength channel of imageing sensor, FR (λ), FG (λ), FB (λ), FIR (λ) is respectively the filter layer RGB-IR channel wavelength distribution function of imageing sensor, the filterability Wavelength distribution function that f (λ) is optical filter, the radiance Wavelength distribution function that S (λ) is LED illumination light source; The transmissivity Wavelength distribution function that L (λ) is optical imaging lens;

When 400-700nm imaging wavelength, the photoelectricity quantum conversion constant unit of QR, QG, QB is V/lux-sec or ke ^-/ lux-sec;

When 800-900nm imaging wavelength, the photoelectricity quantum conversion constant unit of QIR is V/ (mw/cm ²-sec) or ke ^-/ (mw/cm ²-sec);

The described voltage amplitude anomalous integral sensing circuit for the anomalous integral reading electric charge that resets is respectively used to the charge voltage V of reset integrating photodiode, and reads the charge voltage V of photodiode;

Described charge voltage V=Q/C (EQ2)

Wherein: Q is the electric charge of the reset integration of photodiode, and C is photodiode equivalent capacity;

Described photodiode has full charge capacity FCC, FCC>=10ke ^-;

Described voltage amplitude anomalous integral sensing circuit has charge-voltage conversion gain CG:CG=1/C=V/Q, and the reset anomalous integral of overall frame pattern reads or the reset anomalous integral of rolling row mode reads;

The number of significant digit that described analog-digital converter ADC has simulation-numerical value conversion quantization resolution is >=8.

7. the preposition and iris recognition integrated optical electric imaging system of mobile terminal according to claim 1, is characterized in that: the physical size of each photodiode imaging pixel cell of described imageing sensor imaging array individual reception RGB-IR wavelength channel meets:

1um/pixel≤PS≤3um/pixel；

In described imageing sensor imaging array, the numerical value YR of the pixel cell opto-electronic conversion of the R wavelength channel of individual reception is:

YR＝FF*QR*GAIN*EXP*ADCG*E*PSU (EQ3)

In described imageing sensor imaging array, the numerical value YG of the pixel cell opto-electronic conversion of the G wavelength channel of individual reception is:

YG＝FF*QG*GAIN*EXP*ADCG*E*PSU (EQ4)

In described imageing sensor imaging array, the numerical value YB of the pixel cell opto-electronic conversion of the B wavelength channel of individual reception is:

YB＝FF*QB*GAIN*EXP*ADCG*E*PSU (EQ5)

In described imageing sensor imaging array, the numerical value YIR of the pixel cell opto-electronic conversion of the IR wavelength channel of individual reception is:

YIR＝FF*QIR*GAIN*EXP*ADCG*E*PSU (EQ6)

Wherein:

Described EXP is reset integral time or the time shutter of imageing sensor imaging array;

Described EXP synchronously equals LED illumination light source radiated time T;

Described GAIN is the Digital and analog gain of imageing sensor imaging array;

Described ADCG is the ADC voltage analog-numerical value conversion quantization resolution of imageing sensor imaging array;

Described E is radiance or the radiant illumination of the reception of imageing sensor imaging array;

E＝C*β*I/WD ²*cosψ*(1/FNO) ² (EQ7)

Wherein: I is LED illumination light source radiation intensity;

ψ is the angle of LED illumination light source radiation position and imaging system optical axis;

WD is the focusing task object distance of optical imaging system;

FNO is the numerical aperture of optical imaging lens;

β is the biological organism optical effect reflectivity of imaging object (iris or face);

The wavelength of LED illumination light source radiation through the absorption of iris or face biological tissue, reflection and scattering generation biological organism optical effect reflectivity;

C is the optical coefficient of optical imaging system;

C＝1/16*cos ⁴ω/(1+OM) ² (EQ8)

Wherein:

ω is the field angle of object of incident light;

OM is the optical magnification of photo electric imaging system;

Described PSU is the physical size square measure ratio of each photodiode imaging pixel cell of imageing sensor imaging array, PSU=(PS*PS)/cm ²;

Described QR, QG, QB, QIR are each imaging pixel cell photoelectricity quantum conversion constant of individual reception wavelength channel in imageing sensor imaging array;

The digital value YR of the pixel cell opto-electronic conversion of individual reception wavelength channel in described imageing sensor imaging array, YG, YB, YIR are further used as image original RAW pixel data I{YR, and YG, YB, YIR} export.

8. the preposition and iris recognition integrated optical electric imaging system of mobile terminal according to claim 1, is characterized in that:

Described imageing sensor imaging array has the RGB-IR imaging pixel cell of at least 1920*1080 quantity; And its RGB-IR imaging pixel cell has 4 direction 2*2 transpostion interval array formats, and the identical wavelength channel pixel of RGB-IR adopts 4 direction transpostion interval sampling modes.

9. the formation method of a preposition photo electric imaging system; It is characterized in that: comprise the following steps:

1. processor chips control LED current driver drives LED illumination light source and produce RGB imaging wavelength continuously or the radiation of synchronizing pulse pattern;

2. filter and physics Refractive focusing through RGB imaging wavelength, imaging array individual reception 3 RGB wavelength channels of imageing sensor carry out overall frame pattern or rolling row mode reset anomalous integral reads;

3. processor chips obtain the image original RAW pixel data I{YR that in imaging array, 3 identical RGB wavelength channels export respectively, YG, YB};

4. processor chips are according to image original RAW pixel data I{YR, YG, YB} and pixel cell opto-electronic conversion relation, drive imageing sensor and LED illumination light source and optical imaging lens to focus on, realize FEEDBACK CONTROL;

5. processor chips are respectively to the original RAW data I{YR of 3 identical RGB wavelength channels in imaging array, carry out interpolated reconstruction between YG, YB} pixel;

6. the image I{r after processor chips output interpolated reconstruction, g, b}, each pixel comprises rgb pixel value respectively.

10. the formation method of an iris recognition photo electric imaging system; It is characterized in that: comprise the following steps:

(1) processor chips control LED current driver drives LED illumination light source and produce IR imaging wavelength continuously or the radiation of synchronizing pulse pattern;

(2) filter and physics Refractive focusing through IR imaging wavelength, imageing sensor imaging array individual reception IR wavelength channel carries out overall frame pattern or rolling row mode reset anomalous integral reads;

(3) processor chips obtain the image original RAW pixel data I{YIR} that in imaging array, identical IR wavelength channel exports;

(4) processor chips are according to image original RAW pixel data I{YIR} and pixel cell opto-electronic conversion relation, drive imageing sensor and LED illumination light source and optical imaging lens to focus on, realize FEEDBACK CONTROL;

(5) processor chips carry out interpolated reconstruction between the original RAW data I{YIR} pixel of IR wavelength channel identical in imaging array;

(6) the image I{ir} after processor chips output interpolated reconstruction.

11. carry out a method for interpolated reconstruction between the original RAW data pixels realizing the identical wavelength channel described in claim 9 or 10, it is characterized in that: comprise the following steps:

I, sample the pixel value of the image original RAW interpolation pixel data 4 direction transpostion interval that identical wavelength channel exports, be respectively:

The identical wavelength channel pixel Pixel_SC in current direction, the pixel Pixel_SH of the identical wavelength channel of horizontal direction, the pixel Pixel_SV of the identical wavelength channel of vertical direction, to the pixel Pixel_SD of the identical wavelength channel of angular direction;

II, interpolation pixel data 4 direction neighborhood pixels interpolation are calculated, Pixel_C, Pixel_H, Pixel_V, Pixel_D:

The pixel Pixel_C=Pixel_SC in current direction;

The neighborhood pixels interpolation Pixel_H=(Pixel_SH+Pixel_SC)/2 of horizontal direction;

The neighborhood pixels interpolation Pixel_V=(Pixel_SV+Pixel_SC)/2 of vertical direction;

To the neighborhood pixels interpolation Pixel_D=(Pixel_SH+Pixel_SV+Pixel_SD+Pixel_SC)/4 of angular direction;

III, circulate I-II step, and traversal calculates original RAW interpolation pixel datas all in image, forms finally complete interpolated image data.

12. 1 kinds of false proof divine force that created the universe biopsy methods of iris, is characterized in that: in the following ways one or more realizes, and to complete the real-time detection function to iris counterfeit, and ensures the security of bio-identification itself:

The biological organism optical activity characteristic real-time detection method that the radiation of I .RGB-IR imaging wavelength produces;

The pupil iris diameter rate of change biological tissue activity characteristic real-time detection method that the radiation of II .RGB-IR imaging wavelength produces;

The optics of cornea reflection position real-time detection method that the radiation of III .RGB-IR imaging wavelength produces;

IV. the activity characteristic real-time detection method of eyeball physiological movement.

The false proof divine force that created the universe biopsy method of 13. iris according to claim 12, is characterized in that: the biological organism optical activity characteristic real-time detection method that described RGB-IR imaging wavelength radiation produces, and comprises the following steps:

(i). processor chips control LED current driver drives LED illumination light source and produce the radiation of RGB imaging wavelength and the radiation of IR imaging wavelength in real time;

(ii). real time imagery image IRGB and IIR that the RGB wavelength channel of processor chips real-time image acquisition sensor imaging array and IR wavelength channel export;

(iii). processor chips respectively real-time calculation procedure (ii) in the contrast C sk of RGB image IRGB and IR image IIR, Csi, Cip, Csip, Ckip data, are respectively IRGB_Csk, IRGB_Csi, IRGB_Cip, IRGB_Csip, IRGB_Ckip, IIR_Csk IIR_Csi, IIR_ip, IIR_Csip, IIR_Ckip;

Wherein:

Csk is the contrast between skin area and iris region;

Csi is the contrast between sclera region and iris region;

Cip is the contrast between iris region and pupil region;

Csip is sclera region, the mutual contrast between iris region and pupil region;

Ckip is skin area, the mutual contrast between iris region and pupil region;

Csk＝S(Iskin)/S(Iiris)；

Csi＝S(Isclera)/S(Iiris)；

Cip＝S(Iiris)/S(Ipupil)；

Csip＝(S(Isclera)-S(Iiris))/(S(Iiris)-S(Ipupil))；

Ckip＝(S(Iskin)-S(Iiris))/(S(Iiris)-S(Ipupil))；

Ipupil represents pupil region pixel;

Iiris represents iris region pixel;

Isclera represents sclera region pixel;

Iskin represents skin area pixel;

Described function S is respective regions pixels statistics valuation functions, and the method that described pixels statistics valuation functions adopts comprises: statistics with histogram, frequency statistics, mean value is added up, weighted mean Data-Statistics, middle Data-Statistics, energy value is added up, variance statistic, space-frequency domain wave filter etc.;

(iv). processor chips calculate picture contrast activity change rate Fsk and Fsi, Fip, Fsip, the Fkip of RGB imaging wavelength radiation and the radiation of IR imaging wavelength respectively in real time;

Wherein:

Fsk＝IRGB_Csk/IIR_Csk*100％；

Fsi＝IRGB_Csi/IIR_Csi*100％；

Fip＝IIR_Cip/IRGB_Cip*100％；

Fsip＝IRGB_Csip/IIR_Csip*100％；

Fkip＝IRGB_Ckip/IIR_Ckip*100％；

(v). according to RGB-IR imaging wavelength irradiating biological organism optical activity characteristic preset value, with step (iv) middle data value Fsk, Fsi, Fip, Fsip, the active contrast respective change rate of Fkip, judges any one or multinomial condition Fsk > 300%, Fsi > 300%, Fip > 300%, Fsip > 900%, Fkip > 900%, realizes detecting iris condition of living organism in real time.

14. the false proof divine force that created the universe biopsy method of iris according to claim 12, is characterized in that: the pupil iris diameter rate of change biological tissue activity characteristic detecting method that described RGB-IR imaging wavelength radiation produces, comprise the following steps:

One. processor chips control LED current driver drives LED illumination light source and produce varying strength dil in real time respectively, RGB and the IR imaging wavelength radiation under con and time conditions, stimulates pupil to produce biological tissue activity enlargement and contraction;

Two. real time imagery image Idil and Icon under the different radiated time that the RGB-IR wavelength channel of processor chips respectively real-time image acquisition sensor imaging array exports and strength condition

Three. processor chips respectively in real-time calculation procedure two in image Idil and Icon the pupil of iris image with iris diameter than ρ data, be respectively ρ dil and ρ con;

ρ＝Dpupil/Diris，

Described Dpupil is pupil diameter length in pixels;

Described Diris is iris diameter length in pixels;

Four. processor chips calculate corresponding activity change rate Δ ρ=(ρ dil-ρ con) * 100% in real time;

Five. according to the preset value of the biological tissue activity enlargement and contraction that the real-time stimulation pupil under varying strength and time conditions produces, with the corresponding activity change rate of data value Δ ρ in step 4, judge Δ ρ > 10% condition, realize detecting iris condition of living organism in real time.

The false proof divine force that created the universe biopsy method of 15. iris according to claim 12, is characterized in that: the optics of cornea reflection position detection method that described RGB-IR imaging wavelength radiation produces, and comprises the following steps:

1) processor chips control LED current driver drives LED illumination light source and produce left side Psrl in real time respectively, right side Psrr and side, left and right 2 Psrl & Psrr diverse location condition under the radiation of RGB and IR imaging wavelength, be formed in the optics of cornea reflection spot of diverse location;

2) the real time imagery image Isr of the RGB-IR wavelength channel output of processor chips difference real-time image acquisition sensor imaging array;

3) processor chips respectively real-time calculation procedure 2) in the optics of cornea reflection point position data Psr of image Isr;

4) produce respectively in real time the preset value under diverse location condition according to LED illumination light source, and step 3) in the optics of cornea reflection point position Psr that calculates, judge whether optics of cornea reflection point position Psr meets corresponding LED illumination light source locality condition:

If LED illumination light source position is Psrl, Psr=Psrl should be met;

If LED illumination light source position is Psrr, Psr=Psrr should be met;

If LED illumination light source position is Psrl & Psrr, Psr=Psrl & Psrr should be met;

Realize detecting iris condition of living organism in real time.

The false proof divine force that created the universe biopsy method of 16. iris according to claim 12, it is characterized in that: the activity characteristic real-time detection method of described eyeball physiological movement, comprise the eyelid movement activity characteristic of the generation detecting eyeball physiological movement in real time, comprise the following steps:

A. processor chips control LED current driver drives LED illumination light source and produce the radiation of RGB-IR imaging wavelength in real time;

B. the real time imagery image Iem of the RGB-IR wavelength channel output of processor chips real-time image acquisition sensor imaging array;

C. the eyelid movement characteristic level data EM of the generation of the eyeball physiological movement of image Iem in the real-time calculation procedure b of processor chips;

Wherein:

The eyelid movement characteristic degree EM of the generation of eyeball physiological movement is defined as:

EM＝Visual_Iris/All_Iris*100％；

All_Iris is the pixel quantity in iris entire area region in image Iem;

Visual_Iris is the pixel quantity in the iris useful area region that in image Iem, eyelid movement is formed;

D. the activity change Shuai Zhi ⊿ EM of the eyelid movement characteristic degree EM of the generation of eyeball physiological movement is calculated in real time;

E. according to the activity change rate preset value of the eyelid movement characteristic degree of the generation of eyeball physiological movement, with the activity change rate value ⊿ EM of the eyelid movement characteristic level data EM of the generation of the eyeball physiological movement calculated in steps d; sentence disconnected ⊿ EM > 10% condition, realize detecting iris condition of living organism in real time.

The false proof divine force that created the universe biopsy method of 17. iris according to claim 12, it is characterized in that: the activity characteristic real-time detection method of described eyeball physiological movement, comprise the activity characteristic from axle stravismus of the generation detecting eyeball physiological movement in real time, comprise the following steps:

A. processor chips control LED current driver drives LED illumination light source and produce the radiation of RGB-IR imaging wavelength in real time;

B. the real time imagery image Ieg of the RGB-IR wavelength channel output of processor chips real-time image acquisition sensor imaging array;

C. in the real-time calculation procedure B of processor chips the eyeball physiological movement of image Ieg generation from axle stravismus characteristic level data EG;

Wherein:

Being defined as from axle stravismus characteristic degree EG of the generation of eyeball physiological movement:

EG＝S_Iris/L_Iris*100％；

S_Iris is from the iris minor axis length in pixels that axle stravismus is formed in image Ieg;

L_Iris is from the iris major axis length in pixels that axle stravismus is formed in image Ieg;

D. the activity change Shuai Zhi ⊿ EG from axle stravismus characteristic degree EG in the generation of eyeball physiological movement is calculated in real time;

E. according to the activity change rate preset value from axle stravismus characteristic degree of the generation of eyeball physiological movement, with the activity change rate value ⊿ EG from axle stravismus characteristic level data EG of the generation of the eyeball physiological movement calculated in step D; sentence disconnected ⊿ EG > 10% condition, realize detecting iris condition of living organism.