CN109583433A - Light processor, lens assembly - Google Patents
Light processor, lens assembly Download PDFInfo
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- CN109583433A CN109583433A CN201910034578.1A CN201910034578A CN109583433A CN 109583433 A CN109583433 A CN 109583433A CN 201910034578 A CN201910034578 A CN 201910034578A CN 109583433 A CN109583433 A CN 109583433A
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- Prior art keywords
- light
- wave plate
- light source
- line
- angle
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
Abstract
The invention discloses a kind of light processor, lens assembly, described device includes light source, lens assembly, light sensation component；The light source can shine；The lens assembly is set between the light source and the light sensation component；The lens assembly includes 1/x wave plate, First Line polaroid, eyeglass, bracket；The 1/x wave plate is set between the light source and the First Line polaroid and the x is greater than 1；The First Line polaroid is set between the 1/x wave plate and the light sensation component；The bracket is used to support the eyeglass；The eyeglass can receive optical signal and be handled, and treated, and signal light is used for light sensation component progress optical imagery.Light processor and lens assembly provided by the invention can be improved lower imaging effect of the optical finger print in fingerprint sensor of screen, improve image quality.
Description
Technical field
The present invention relates to fingerprint signal field, in particular to a kind of light processor, lens assembly.
Background technique
Shield lower fingerprint technique at present just increasingly mature, shields the method application that lower fingerprint can use fingerprint sensor imaging
Under OLED display screen.Wherein, OLED display screen be can with self light-emitting display device, thereon side can be set quarter wave plate and
Line polarisation piece is to improve the contrast of OLED display screen.Finger can be placed by being provided in the upper surface of quarter wave plate and polarisation
Cover-plate glass.
Specifically, the light that OLED display screen issues can be arrived by line polarisation piece, quarter wave plate and the cover-plate glass above it
OLED can be penetrated after the light of finger reflection is using the quarter wave plate and line polarisation piece above OLED display screen up to finger
Display screen can light passing region, reach fingerprint sensor display imaging, i.e., it is reflected with finger print information by finger
Light can show imaging in fingerprint sensor.
But the light for reaching fingerprint sensor is not only having by finger is reflected for OLED display screen sending
Finger print information is used up, and there are also OLED display screens directly to issue the noise light without finger print information without reflection, this
Sample can reduce the quality that fingerprint is imaged in fingerprint sensor, influence imaging effect.
Summary of the invention
It is an object of the present invention to provide a kind of light processors, lens assembly, can be improved in fingerprint sensor
Shield the signal-to-noise ratio of lower optical finger print, shields lower optical finger print in the imaging effect of optical module so as to improve, improve into image quality
Amount.
Following technical proposal can be used to realize in above-mentioned purpose of the invention:
A kind of light processor, described device include light source, lens assembly, light sensation component；
The light source can shine；The lens assembly is set between the light source and the light sensation component；The camera lens
Component includes 1/x wave plate, First Line polaroid, eyeglass, bracket；The 1/x wave plate is set to the light source and the First Line is inclined
Between mating plate and the x is greater than 1；The First Line polaroid is set between the 1/x wave plate and the light sensation component；The branch
Frame is used to support the eyeglass；The eyeglass can receive optical signal and be handled, and treated, and signal light is used for light sensation group
Part carries out optical imagery.
In one preferred embodiment, described device includes: one far from the lens assembly in the light source
The 1/y wave plate and the second line polarisation piece of side setting；The 1/y wave plate is bonded setting with the second line polarisation piece and the y is greater than 1；
The 1/y wave plate is arranged relative to the second line polarisation piece close to the light source.
In one preferred embodiment, the lens assembly includes an eyeglass, and the eyeglass is located at described
Between light source and the 1/x wave plate；Alternatively,
The eyeglass is located between 1/x wave plate and the First Line polaroid, or
The eyeglass is between the First Line polaroid and the light sensation component.
In one preferred embodiment, the lens assembly includes multiple eyeglasses；
The 1/x wave plate and the First Line polaroid are disposed adjacent and can be located at two eyeglasses of arbitrary neighborhood
Between；Alternatively,
One or several eyeglasses are separated between the 1/x wave plate and the First Line polaroid.
In one preferred embodiment, it is close to be set to the bracket for the 1/x wave plate and the First Line polaroid
The side of the light source or the side of the separate light source.
In one preferred embodiment, the polarization of the optical axis direction of the 1/x wave plate and the First Line polaroid
Direction is in the first angle；The polarization direction of the optical axis direction of the 1/y wave plate and the second line polarisation piece is in and the first angle
The second opposite angle, the observed direction of first angle and second angle are along display panel to the side of light sensation component
To.
In one preferred embodiment, first angle is+45 ° ± 5 °, and second angle is -45 ° ± 5 °；
Alternatively, first angle is -45 ° ± 5 °, second angle is+45 ° ± 5 °.
In one preferred embodiment, described device further includes infrared fileter；The infrared fileter, described 1/
X wave plate, the fitting setting of First Line polaroid.
In one preferred embodiment, described device includes the display panel with the light source；The display surface
Plate is equipped with translucent construction；The display panel has glass cover-plate in the side far from the 1/x wave plate.
In one preferred embodiment, the light sensation component includes fingerprint sensor.
The application also provides a kind of lens assembly, and the lens assembly includes 1/x wave plate, First Line polaroid, eyeglass, branch
Frame；The 1/x wave plate is set between light source and the First Line polaroid；The First Line polaroid is set to the 1/x wave plate
Between light sensation component；The eyeglass being capable of the received optical signal progress optical imagery of institute；The 1/x wave plate, the First Line
Polaroid is arranged on the bracket；The bracket is used to support the eyeglass.
The application also provides a kind of light processor, comprising:
Light source；
The first light processing component positioned at the light source side；The first light processing component is used for the warp issued to light source
The optical signal of reverberation reflection carries out optical treatment；
The second light processing component positioned at the light source other side；The second light processing component is at first light
Managing component, treated that light passes through；
Light sensation component；The light sensation component is used for that treated that optical signal changes to form electricity by the second light processing component
Signal.
In one preferred embodiment, the second light processing component be set to the light source and the light sensation component it
Between；The second light processing component includes lens assembly；
The lens assembly includes: 1/x wave plate, First Line polaroid, eyeglass, bracket；The 1/x wave plate is set to the light
Between source and the First Line polaroid；The First Line polaroid is set between the 1/x wave plate and the light sensation component；Institute
It states bracket and is used to support the eyeglass；The eyeglass can receive optical signal and be handled, and treated, and signal light is used for light
Feel component and carries out optical imagery.
In one preferred embodiment, the first light processing component includes 1/y wave plate and the second line polarisation piece, institute
It states 1/y wave plate and is bonded setting with the second line polarisation piece；The 1/y wave plate is relative to the second line polarisation piece close to the light source
Setting.
In one preferred embodiment, the polarization of the optical axis direction of the 1/x wave plate and the First Line polaroid
Direction is in the first angle；The polarization direction of the optical axis direction of the 1/y wave plate and the second line polarisation piece is in and the first angle
The second opposite angle；The observed direction of first angle and the second angle is along display panel to the direction of light sensation component.
In one preferred embodiment, first angle is+45 ° ± 5 °, and second angle is -45 ° ± 5 °；
Alternatively, first angle is -45 ° ± 5 °, second angle is+45 ° ± 5 °.
The features and advantages of the invention are: the light processor that the application embodiment provides, the light processor packet
Include light source, lens assembly, light sensation component.The light source can shine, the quilt that the lens assembly can issue the light source
The light of reverberation reflection is handled, so that improving to travel on the light sensation component has the ratio used up with noise light,
Improve the signal-to-noise ratio of optical signal.
Specifically, the lens assembly includes 1/x wave plate, First Line polaroid, eyeglass, bracket；Wherein, the 1/x wave
Piece is set between the light source and the First Line polaroid；The First Line polaroid is set to the 1/x wave plate and the light
Feel between component；The eyeglass being capable of the received optical signal progress optical imagery of institute；The 1/x wave plate, first line polarisation
Piece is arranged on the bracket.The 1/x wave plate, First Line polaroid can not filter useful smooth premise or lesser filtering
Under the premise of using up, most noise light is filtered, to improve the signal-to-noise ratio for the optical signal that light sensation component receives, in turn
The imaging effect of light sensation component is improved, image quality is improved.
Referring to following description and accompanying drawings, specific implementations of the present application are disclosed in detail, specify the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those skilled in the art without any creative labor, can also be by
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic diagram of the light processor in the application one embodiment；
Fig. 2 is that the 1/x wave plate and First Line polaroid in the application one embodiment are placed in the schematic diagram under the eyeglass；
Fig. 3 is that 1/x wave plate and First Line polaroid are placed in the schematic diagram on the eyeglass in another embodiment of the application；
Fig. 4 is that 1/x wave plate and First Line polaroid are placed in the schematic diagram in adjacent mirror in another embodiment of the application；
Fig. 5 is that eyeglass is placed in the schematic diagram in the 1/x wave plate and First Line polaroid in another embodiment of the application；
Fig. 6 is that 1/x wave plate and First Line polaroid are placed in the schematic diagram on the upside of bracket in another embodiment of the application；
Fig. 7 is that 1/x wave plate and First Line polaroid are placed in the schematic diagram on the downside of bracket in another embodiment of the application；
Fig. 8 is the upper and lower side that 1/x wave plate and First Line polaroid are respectively placed in bracket in another embodiment of the application
Schematic diagram；
Fig. 9 is first of the polarization direction of the optical axis direction of 1/x wave plate, First Line polaroid in the application one embodiment
Angle is in the schematic diagram of -45 ° of angles；
Figure 10 is the of the polarization direction of the optical axis direction of 1/y wave plate, the second line polarisation piece in the application one embodiment
Two angles are in+45 ° of schematic diagram；
Figure 11 is the of the polarization direction of the optical axis direction of 1/x wave plate, First Line polaroid in the application one embodiment
The schematic diagram of one+45 ° of angle angle；
Figure 12 is the of the polarization direction of the optical axis direction of 1/y wave plate, the second line polarisation piece in the application one embodiment
One angle is in -45 ° of schematic diagram；
Figure 13 is the signal that the application one embodiment intermediate infrared filter is placed in above 1/x wave plate and First Line polaroid
Figure；
Figure 14 is that the application one embodiment intermediate infrared filter is placed in showing for 1/x wave plate and First Line polaroid upper and lower
It is intended to.
Appended drawing reference:
1, eyeglass；2,1/x wave plate；3, First Line polaroid；4, bracket；5, cover-plate glass；6, the second line polarisation piece；7,1/
Y wave plate；8, display panel；9, finger；10, infrared fileter；11, the optical axis direction of 1/x wave plate；12, First Line polaroid
Polarization direction；13, the optical axis direction of 1/y wave plate；14, the polarization direction of the second line polarisation piece.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, elaborate to technical solution of the present invention, it should be understood that these
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention, after the present invention has been read, this field skill
Art personnel each fall in the application range as defined in the appended claims the modification of various equivalent forms of the invention.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", "upper",
"lower", "left", "right" and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Referring to Fig. 1, the application embodiment provides a kind of light processor.The light processor includes light source, mirror
Head assembly, light sensation component.
Wherein, the light source can shine.The lens assembly is set between the light source and the light sensation component.It is described
Lens assembly can receive optical signal and be handled, and treated, and signal light is used for light sensation component progress optical imagery.
The lens assembly includes 1/x wave plate, First Line polaroid 3, eyeglass 1, bracket 4.The 1/x wave plate is set to described
Between light source and the First Line polaroid 3.The First Line polaroid 3 be set to the 1/x wave plate and the light sensation component it
Between；The eyeglass 1 being capable of the received optical signal progress optical imagery of institute.The 1/x wave plate, the First Line polaroid 3 setting
In on the bracket 4 and the x be greater than 1.The bracket 4 is used to support the eyeglass 1.Specifically, the x is preferably integer,
It can be 2,4,6 etc..Preferably, the x is 4, i.e., the described 1/x wave plate is quarter wave plate.
Specifically, the bracket 4 can be the form of lens barrel, the lens barrel has a receiving cavity, and the cavity can
To accommodate multiple eyeglasses 1, the eyeglass 1 can be cooperatively connected with the lens barrel by the way of being threadedly engaged.
The light processor that the application embodiment provides, the light source can shine, and the lens assembly includes 1/x wave
Piece, First Line polaroid 3, eyeglass 1, bracket 4；Wherein, the 1/x wave plate is set to the light source and the First Line polaroid 3
Between；The First Line polaroid 3 is set between the 1/x wave plate and the light sensation component；The eyeglass can receive light letter
Number and handled, treated signal light carries out optical imagery for light sensation component.The 1/x wave plate, First Line polaroid 3
It can be filtered under the premise of not filtering useful light or smaller under the premise of using up, filter most noise light, thus
The signal-to-noise ratio for the optical signal that light sensation component receives is improved, and then improves the imaging effect of light sensation component, improves image quality.
In one embodiment, the apparatus may include the display panels 8 with the light source.The display panel
8 be translucent construction, i.e., the described display panel 8 can both shine can also be with light transmission.The display panel 8 is far from the 1/x wave
The side of piece has glass cover-plate, which touches for user, forms touching signals.The display panel 8 is set to institute
State side of the 1/x wave plate far from first polaroid.
Preferably, the display panel 8 can be OLED display screen, and the OLED display screen can be described with self-luminescence
OLED display screen can be translucent construction, and the OLED display screen can both shine can also be with light transmission.The translucent construction with it is described
Light sensation component is corresponding, so that the light that the light source in OLED display screen issues can be by light transmission knot by the reflection of finger 9
Structure reaches light sensation component and carries out optical imagery.
Wherein, the eyeglass 1 can receive optical signal and be handled, and treated, and signal light is carried out for light sensation component
Optical imagery.Specifically, the optical module can be fingerprint sensor, (such as notification number is fingerprint sensor array
Known embodiments provided by CN203909812U), fingerprint chip etc., the application does not do unique restriction.Preferably, the light
Learning component can be fingerprint sensor, and the light that the OLED display screen issues can be reflected back by the finger 9 on cover-plate glass 5
Come and the translucent construction for penetrating display screen reaches fingerprint sensor and carries out optical imagery, fingerprint sensor and then can will be through finger
The 9 reflection signal optical signals being reflected back are converted to electric signal to realize the acquisition and imaging of fingerprint.
In one preferred embodiment, as Figure 1-Figure 8, the light processor is in light source far from the mirror
The side of head assembly is provided with 1/y wave plate 7 and the second line polarisation piece 6；The 1/y wave plate 7 is bonded setting with the second line polarisation piece 6
And the y is greater than 1.The 1/y wave plate 7 is arranged relative to the second line polarisation piece 6 close to the light source.Preferably, x and y
It is equal.Specifically, the 1/y can be quarter wave plate.
The light reflected by finger 9 that the light source of the light processor issues is by the 1/x wave plate 2, described the
Before the processing of one line polarisation piece 3, the processing by the 1/y wave plate 7, the second line polarisation piece 6 is needed, such cooperation is processed
Journey can accomplish almost it is lossless by useful light propagation into the light sensation component.
Preferably, the 1/y wave plate 7, the second line polarisation piece 6 can be set in the cover-plate glass 5 and the display surface
Between plate 8.The light that the display panel 8 is issued to 5 direction of cover-plate glass is reflected by the finger 9 on cover-plate glass 5,
By the 1/y wave plate 7, the second line polarisation piece 6 processing after, the light can penetrate the display panel 8 light transmission knot
The light sensation component is reached using the processing of the 1/x wave plate 2, the First Line polaroid 3 after structure, the light sensation component can
Fingerprint is imaged and be acquired in turn.
The light source carries finger print information by the light that finger 9 reflects, and eventually reaches in light sensation component, in light sensation group
Fingerprint imaging is carried out in part, is required use up.But above-mentioned through the reflected light of finger 9 is not uniquely to reach
The light of light sensation component reaches the light reflected without finger 9 that the also light source of light sensation component is directly issued to light sensation component at this time.
Such light for reaching light sensation component without finger print information without the reflection of finger 9 is noise light, will affect and reflects through finger 9
Light carries out the quality of fingerprint imaging in light sensation component.
The light processor can accomplish almost lossless will have while reducing the noise light for reaching light sensation component
It uses up and travels in the light sensation component, to improve the signal-to-noise ratio for reaching the light of the light sensation component.
Specifically, the optical axis direction 11 and the First Line polaroid 3 of the 1/x wave plate 2 in the light processor
Polarization direction 12 be in the first angle；The polarization direction of the optical axis direction 13 of the 1/y wave plate 7 and the second line polarisation piece 6
14 be in second angle opposite with the first angle.The angle setting of opposite direction in this way, which can be accomplished to reduce, reaches light sensation component
While noise light, accomplish almost it is lossless by useful light propagation into the light sensation component, reach the light sensation to improve
The signal-to-noise ratio of the light of component.
Preferably, as shown in Figure 9 and Figure 10, first angle is -45 ° ± 5 °, and second angle is+45 ° ± 5 °；
Alternatively, as is illustrated by figs. 11 and 12, first angle is+45 ° ± 5 °, second angle is -45 ° ± 5 °.Specifically, such as
Shown in Fig. 9, when the angle of first angle is -45 °, as shown in Figure 10, the angle of second angle is+45 °；Or
Person, as shown in figure 11, when the angle of first angle is+45 °, as shown in figure 12, the angle of second angle is-
45°.Since when manufacturing described device, the setting of the angle might not very precisely, thus above-mentioned angle can
To there is ± 5 ° of range of tolerable variance.Wherein, the observed direction of above-mentioned angle is along display panel to the view directions of light sensation component.When
So, first angle, the first angle can be any appropriate direction and numerical value, as long as meeting the relationship that the two is in phase dihedral
, this is not limited by the present invention.
Due to the polarization direction 12 of the optical axis direction 11 and First Line polaroid 3 of the 1/x wave plate 2 angle and
The specific setting of the angle of the polarization direction 14 of the optical axis direction 13 of the 1/y wave plate 7, the second line polarisation piece 6, the reflected light
After the processing of the 1/y wave plate 7, the second line polarisation piece 6, the reflected light can become circularly polarized light, circle at this time
After processing of the polarised light using 1/x wave plate 2, the light parallel with the polarization direction 12 of first linear polarizer 3 will become,
The light parallel with the polarization direction 12 of first linear polarizer 3 can be by first linear polarizer 3, thus uses up
Light can be all by first linear polarizer 3, so that the light reflected by finger 9 can almost lossless arrival light
Feel in component.
But the noise light propagated to light sensation component direction that the light source directly issues is without going past the 1/y wave
The processing of piece 7, the second line polarisation piece 6, but the 1/x wave plate 2, the First Line polaroid 3 are directly over to the light sensation
Component is propagated.The noise light direction of such processing without the 1/y wave plate 7, the second line polarisation piece 6 be it is very mixed and disorderly,
May only have sub-fraction light be the light parallel with the polarization direction 12 of first linear polarizer 3, due to it is described
The parallel light in the polarization direction 12 of first linear polarizer 3 can be by first linear polarizer 3, thus only one small portion
Point noise light can reach light sensation component by the First Line polaroid 3.
Due to there is the light used up can be almost in lossless arrival light sensation component, only sub-fraction noise light can
Reach light sensation component by the First Line polaroid 3, thus the signal-to-noise ratio for reaching the light of the light sensation component can improve, from
And imaging effect of the fingerprint in the optical module can be more preferable.
The quantity of the eyeglass 1 in the light processor can not do unique restriction for one or more, the application.
The eyeglass 1 can be convex lens, but be not limited to the such construction for collecting function with light of such as convex lens.The eyeglass 1
Have the function of collecting light and optical imagery, described use up can be imaged in the light sensation component, so convenient at
As the realization of function.
In the present embodiment, the lens assembly include an eyeglass 1, the eyeglass 1 be located at the light source with
Between the 1/x wave plate 2；Alternatively, the eyeglass 1 is located between 1/x wave plate 2 and the First Line polaroid 3 or the mirror
Piece 1 is between the First Line polaroid 3 and the light sensation component.
In the present embodiment, as Figure 1-Figure 5, the lens assembly includes multiple eyeglasses 1.The multiple mirror
Piece 1 can be arranged in parallel in the bracket 4, and the bracket 4 can be lens barrel.The 1/x wave plate 2 and first line polarisation
Piece 3 is disposed adjacent and can be located between two eyeglasses 1 of arbitrary neighborhood；Alternatively, the 1/x wave plate 2 and described first
One or several eyeglasses 1 are separated between line polarisation piece 3.
In another embodiment, the 1/x wave plate 2 and the First Line polaroid 3 are set to the bracket 4 close to institute
State the side of light source or the side far from the light source.The bracket 4 can be lens barrel.
As Figure 6-Figure 7, the 1/x wave plate 2 and the First Line polaroid 3, which can be bonded, is set to the bracket 4
Upside or downside, the 1/x wave plate 2 and the First Line polaroid 3 can be adhesive in described using mode for dispensing glue at this time
The upper surface side or lower end surface side of lens barrel.
As shown in figure 8, the 1/x wave plate 2 and the First Line polaroid 3 can also be adhesive in a manner of for dispensing glue respectively
The upper surface and lower end surface of the lens barrel, i.e., the described 1/x wave plate 2 can be set in the upper surface side of the lens barrel, and described
One line polarisation piece 3 is set to the lower end surface side of the lens barrel.
In another embodiment, as shown in Figure 13-Figure 14, described device can also include infrared fileter 10.It is described
Infrared fileter 10 can be used for filtering infrared light line.The infrared fileter 10, the 1/x wave plate 2, First Line polaroid 3
Fitting setting.Certainly, the infrared filter disc can also be provided separately and the branch with the 1/x wave plate 2, First Line polaroid 3
In frame 4, the infrared fileter 10 may be replaced by other kinds of mating plate.The 1/x wave plate 2, First Line polaroid 3 are all
Light can be handled with the progress mating reaction of these mating plates more multi-functional to realize.
In conclusion the light processor that the application embodiment provides, the light source can shine, the lens assembly
Including 1/x wave plate 2, First Line polaroid 3, eyeglass 1, bracket 4；Wherein, the 1/x wave plate 2 is set to the light source and described the
Between one line polarisation piece 3；The First Line polaroid 3 is set between the 1/x wave plate 2 and the light sensation component；The eyeglass 1
Optical signal can be received and handled, treated, and signal light is used for light sensation component progress optical imagery.The 1/x wave plate 2,
First Line polaroid 3 can be under the premise of filtering be used up under the premise of not filtering useful light or smaller, and filtering is most of
Noise light, to improve the signal-to-noise ratio for the optical signal that light sensation component receives, and then improve the imaging effect of light sensation component, mention
High imaging quality.
The application also provides a kind of lens assembly applied to above-mentioned light processor, and the lens assembly may include 1/
X wave plate 2, First Line polaroid 3, eyeglass 1, bracket 4.The 1/x wave plate 2 is set to the light source and the First Line polaroid 3
Between.The First Line polaroid 3 is set between the 1/x wave plate 2 and the light sensation component.The eyeglass 1 can be received
Optical signal carry out optical imagery.The 1/x wave plate 2, the First Line polaroid 3 are set on the bracket 4.The bracket
4 are used to support the eyeglass 1.
Preferably, the 1/x wave plate 2 can be quarter wave plate.The bracket 4 can be the form of lens barrel, the lens barrel tool
There is a receiving cavity, the cavity can accommodate multiple eyeglasses 1, and the eyeglass 1 can be used with the lens barrel and is threadedly engaged
Mode be cooperatively connected.
In addition, the specific structure of the lens assembly can be with reference to the embodiment or embodiment in above-mentioned light processor
In lens assembly description, no longer repeat one by one herein, can be mutual between each embodiment or embodiment of the application
Reference, rather than isolated presence.
Fig. 1 is please referred to Figure 12.The application also provides a kind of light processor, and described device includes: light source；Positioned at described
First light processing component of light source side；The light through reverberation reflection that the first light processing component is used to issue light source is believed
Number carry out optical treatment；The second light processing component positioned at the light source other side；The second light processing component is for described
Treated that light passes through for first light processing component；Light sensation component；The light sensation component is used for the second light processing component
Treated, and optical signal changes to form electric signal.
The light source issue through the light of reverberation reflection after the first light processing component processing again through described the
The processing of two light processing components can all arrive at the light sensation component, and handle without the first light processing component and directly send out
Most light can be lost when passing through the second light processing component to the light of the light sensation component, is reached so as to improve
The signal-to-noise ratio of the optical signal of fingerprint sensor.
In one preferred embodiment, the second light processing component be set to the light source and the light sensation component it
Between；The second light processing component includes lens assembly.
The lens assembly includes: 1/x wave plate 2, First Line polaroid 3, eyeglass 1, bracket 4；The 1/x wave plate 2 is set to
Between the light source and the First Line polaroid 3 and the x is greater than 1.The First Line polaroid 3 is set to the 1/x wave plate 2
Between the light sensation component.The bracket 4 is used to support the eyeglass 1.
The eyeglass 1 can receive optical signal and be handled, and treated, and signal light is used for light sensation component progress optics
Imaging.
Preferably, the x is integer, can be 2,4,6 etc..Preferably, the 1/x wave plate 2 is quarter wave plate.The branch
Frame 4 can be the form of lens barrel, and the lens barrel has a receiving cavity, and the cavity can accommodate multiple eyeglasses 1, the mirror
Piece 1 can be cooperatively connected with the lens barrel by the way of being threadedly engaged, can be convenient for assembly.
In one preferred embodiment, the first light processing component includes 1/y wave plate 7 and the second line polarisation piece 6,
The 1/y wave plate 7 is bonded setting with the second line polarisation piece 6 and the y is greater than 1；The 1/y wave plate 7 is relative to second line
Polaroid 6 is arranged close to the light source.Preferably, the x is equal with y, and the y can be 4, i.e., the described 1/y wave plate 7 is 1/4
Wave plate.
Such setting can cooperate the second light processing component to handle light, i.e., the described second light processing component
Scheduled optical treatment can be formed to light with the first light processing component to reach realization and improve signal-to-noise ratio.
Wherein, the second light processing component in the present embodiment, first light processing component etc. can refer to above-mentioned implementation
The description of example or the optical processing system in embodiment, no longer repeats, each embodiment of the application or implementation one by one herein
Between mode can mutual reference, rather than isolated presence.
The light source carries finger print information by the light that finger 9 reflects, and eventually reaches in light sensation component, in light sensation group
Fingerprint imaging is carried out in part, the reflected light is required uses up.But above-mentioned it is not through the reflected light of finger 9
Unique light for reaching light sensation component reaches the also light source of light sensation component directly to the sending of light sensation component without finger 9 at this time
The light of reflection.Such light for reaching light sensation component without finger print information without the reflection of finger 9 is noise light, will affect and handles
Refer to that the light of 9 reflections carries out the quality of fingerprint imaging in light sensation component.
The optical processing system can while reducing the noise light for reaching light sensation component, accomplish almost it is lossless general
Useful light propagation is into the light sensation component, to improve the signal-to-noise ratio for reaching the light of the light sensation component.
The light reflected by finger 9 that the light source of the light processor issues is by the 1/x wave plate 2, described the
Before the processing of one line polarisation piece 3, the processing by the 1/y wave plate 7, the second line polarisation piece 6 is needed, such cooperation makes a reservation for
Optical treatment process can accomplish almost it is lossless by useful light propagation into the light sensation component.
Detailed process is as follows for the predetermined optical processing: the reflected light is inclined by the 1/y wave plate 7, the second line
After the processing of mating plate 6, the reflected light can become circularly polarized light, circularly polarized light at this time using 1/x wave plate 2 processing
Afterwards, it will become the light parallel with 3 polarization direction of the first linear polarizer, it is flat with 3 polarization direction of the first linear polarizer
Capable light can be by first linear polarizer 3, thus has the light used up can be all by first linear polarization
Piece 3, so that the light reflected by finger 9 can be almost in lossless arrival light sensation component.
But the noise light propagated to light sensation component direction that the light source directly issues is without going past the 1/y wave
The processing of piece 7, the second line polarisation piece 6, but the 1/x wave plate 2, the First Line polaroid 3 are directly over to the light sensation
Component is propagated.The noise light direction of such processing without the 1/y wave plate 7, the second line polarisation piece 6 be it is very mixed and disorderly,
The light that may only have sub-fraction is the light parallel with 3 polarization direction of the first linear polarizer, due to the First Line
The parallel light in 3 polarization direction of polarizing film can be by first linear polarizer 3, thus only sub-fraction noise luminous energy
Light sensation component is enough reached by the First Line polaroid 3.
Due to there is the light used up can be almost in lossless arrival light sensation component, only sub-fraction noise light can
Reach light sensation component by the First Line polaroid 3, thus the signal-to-noise ratio for reaching the light of the light sensation component can improve, from
And imaging effect of the fingerprint in the optical module can be more preferable.
The quantity of the eyeglass 1 in the light processor can not do unique restriction for one or more, the application.
The eyeglass 1 can be convex lens, but be not limited to the such construction for collecting function with light of such as convex lens.The eyeglass 1
Have the function of collecting light and optical imagery, described use up can be imaged in the light sensation component.
The light processor in above-described embodiment to be applied in mobile phone as the scene for shielding lower fingerprint recognition, institute
Stating light sensitive component is fingerprint sensor.The second light processing component is quarter wave plate and First Line polaroid 3.First light
Processing component and light source can be OLED display screen, wherein the light source can be for positioned at the bottom of the OLED display screen
Area source, the first light processing component are quarter wave plate and the second line polarisation piece 6.On the cover-plate glass 5 there is finger 9 to put
Set region.
Light a part that the OLED display screen issues is issued to 5 direction of cover-plate glass, the OLED display screen hair
Some meeting of light out is directly propagated to the direction of the fingerprint sensor.
Specifically, when finger 9 is placed on 9 placement region of finger on cover-plate glass 5, the light source is to the cover board glass
The light that 5 direction of glass issues can reach cover-plate glass 5 and be fired back by finger 9, (use up) meeting through the reflected light of finger 9
By the cooperation optical treatment of the second light processing component and the first light processing component so as to entirely reaching the fingerprint
Sensor, and fingerprint imaging is carried out in fingerprint sensor.
And the direct light (noise light) issued to the direction of the fingerprint sensor that those light sources issue only passes through the
The optical treatment of one light processing component, only sub-fraction reach the fingerprint sensor.
Pass through above-mentioned optical treatment process, it can be seen that can be complete through the using up with finger print information that finger 9 reflects
Portion reaches fingerprint sensor.And the noise light for being directly transmitted to fingerprint sensor that those are reflected without finger 9 largely all can
Loss.Thus as a whole, the signal-to-noise ratio for the light that the fingerprint sensor of fingerprint recognition receives under the screen in the mobile phone improves
, i.e. fingerprint is more preferable in the imaging effect of the fingerprint sensor, and discrimination is more accurate, and the experience of user can be improved.
Herein cited any digital value all include between lower limit value to upper limit value with the lower value of an incremented and
The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity an of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that all possibility for the numerical value enumerated between minimum and peak
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range
" about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to cover that " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed herein, including patent application and publication, for various purposes by helping
Draw and is hereby incorporated by.Describe combined term " substantially by ... constitute " should including identified element, ingredient, component or step with
And other elements, ingredient, component or step essentially without the basic novel feature for influencing the combination.Use term "comprising"
Or " comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, portion
The embodiment that part or step are constituted.Here by using term " can with ", it is intended to illustrate described that " can with " includes
What attribute is all optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
Above-mentioned each embodiment in this specification is described in a progressive manner, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment stressed is and other embodiments difference.
The foregoing is merely several embodiments of the invention, although disclosed herein embodiment it is as above, institute
Content is stated only to facilitate the embodiment for understanding the present invention and using, is not intended to limit the present invention.Any institute of the present invention
Belong to those skilled in the art, do not depart from disclosed herein spirit and scope under the premise of, can be in embodiment
Formal and details on make any modification and variation, but scope of patent protection of the invention, still must be with appended claims
Subject to the range that book is defined.
Claims (16)
1. a kind of light processor, which is characterized in that described device includes light source, lens assembly, light sensation component；
The light source can shine；The lens assembly is set between the light source and the light sensation component；The lens assembly
Including 1/x wave plate, First Line polaroid, eyeglass, bracket；The 1/x wave plate is set to the light source and the First Line polaroid
Between and the x be greater than 1；The First Line polaroid is set between the 1/x wave plate and the light sensation component；The bracket is used
In the support eyeglass；The eyeglass can receive optical signal and be handled, treated signal light for light sensation component into
Row optical imagery.
2. light processor as described in claim 1, which is characterized in that described device includes: the separate institute in the light source
State the 1/y wave plate and the second line polarisation piece of the side setting of lens assembly；The 1/y wave plate is bonded setting with the second line polarisation piece
And the y is greater than 1；The 1/y wave plate is arranged relative to the second line polarisation piece close to the light source.
3. light processor as described in claim 1, which is characterized in that the lens assembly includes an eyeglass, institute
Eyeglass is stated between the light source and the 1/x wave plate；Alternatively,
The eyeglass is located between 1/x wave plate and the First Line polaroid, alternatively,
The eyeglass is between the First Line polaroid and the light sensation component.
4. light processor as described in claim 1, which is characterized in that the lens assembly includes multiple eyeglasses；
The 1/x wave plate and the First Line polaroid be disposed adjacent and can be located at arbitrary neighborhood two eyeglasses it
Between；Alternatively,
One or several eyeglasses are separated between the 1/x wave plate and the First Line polaroid.
5. light processor as described in claim 1, which is characterized in that the 1/x wave plate and the First Line polaroid are set
In the bracket close to the side of the light source or far from the side of the light source.
6. light processor as claimed in claim 2, which is characterized in that the optical axis direction of the 1/x wave plate and described first
The polarization direction of line polarisation piece is in the first angle；The polarization side of the optical axis direction of the 1/y wave plate and the second line polarisation piece
The observed direction of the second opposite angle of the first angle of Xiang Chengyu, first angle and second angle is along display panel
To the direction of light sensation component.
7. light processor as claimed in claim 6, which is characterized in that first angle is+45 ° ± 5 °, described second
Angle is -45 ° ± 5 °；Alternatively, first angle is -45 ° ± 5 °, second angle is+45 ° ± 5 °.
8. light processor as described in claim 1, which is characterized in that described device further includes infrared fileter；It is described red
Outer optical filter, the 1/x wave plate, the fitting setting of First Line polaroid.
9. light processor as described in claim 1, which is characterized in that described device includes the display surface with the light source
Plate；The display panel is equipped with translucent construction；The display panel has glass cover-plate in the side far from the 1/x wave plate.
10. light processor as described in claim 1, which is characterized in that the light sensation component includes fingerprint sensor.
11. a kind of lens assembly of light processor, which is characterized in that the lens assembly includes 1/x wave plate, the first line polarisation
Piece, eyeglass, bracket；The 1/x wave plate is set between light source and the First Line polaroid；The First Line polaroid is set to institute
It states between 1/x wave plate and light sensation component；The eyeglass being capable of the received optical signal progress optical imagery of institute；The 1/x wave plate, institute
First Line polaroid is stated to be arranged on the bracket；The bracket is used to support the eyeglass.
12. a kind of light processor characterized by comprising
Light source；
The first light processing component positioned at the light source side；The first light processing component be used for light source issue through reflecting
The optical signal of object reflection carries out optical treatment；
The second light processing component positioned at the light source other side；The second light processing component is used for the first light processing group
Treated that light passes through for part；
Light sensation component；The light sensation component is used for that treated that optical signal changes to form telecommunications by the second light processing component
Number.
13. light processor as claimed in claim 12, which is characterized in that the second light processing component is set to the light source
Between the light sensation component；The second light processing component includes lens assembly；
The lens assembly includes: 1/x wave plate, First Line polaroid, eyeglass, bracket；The 1/x wave plate be set to the light source with
Between the First Line polaroid；The First Line polaroid is set between the 1/x wave plate and the light sensation component and the x
Greater than 1；The bracket is used to support the eyeglass；The eyeglass can receive optical signal and be handled, treated signal
Light carries out optical imagery for light sensation component.
14. light processor as claimed in claim 13, which is characterized in that the first light processing component includes 1/y wave plate
With the second line polarisation piece, the 1/y wave plate is bonded setting with the second line polarisation piece and the y is greater than 1；The 1/y wave plate is opposite
It is arranged in the second line polarisation piece close to the light source.
15. light processor as claimed in claim 14, which is characterized in that the optical axis direction of the 1/x wave plate and described
The polarization direction of one line polarisation piece is in the first angle；The polarization of the optical axis direction of the 1/y wave plate and the second line polarisation piece
Direction is in second angle opposite with the first angle, and the observed direction of first angle and second angle is along display surface
Plate is to the direction of light sensation component.
16. light processor as claimed in claim 15, which is characterized in that first angle is+45 ° ± 5 °, described
Two angles are -45 ° ± 5 °；Alternatively, first angle is -45 ° ± 5 °, second angle is+45 ° ± 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034578.1A CN109583433A (en) | 2019-01-15 | 2019-01-15 | Light processor, lens assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034578.1A CN109583433A (en) | 2019-01-15 | 2019-01-15 | Light processor, lens assembly |
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| Publication Number | Publication Date |
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| CN109583433A true CN109583433A (en) | 2019-04-05 |
Family
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| CN201910034578.1A Pending CN109583433A (en) | 2019-01-15 | 2019-01-15 | Light processor, lens assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110728190A (en) * | 2019-09-12 | 2020-01-24 | 惠州市星聚宇光学有限公司 | Optical fingerprint identification lens |
| WO2020220298A1 (en) * | 2019-04-30 | 2020-11-05 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition apparatus and electronic device |
| CN112633048A (en) * | 2019-09-24 | 2021-04-09 | 上海和辉光电有限公司 | Display panel and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007056776A2 (en) * | 2005-11-14 | 2007-05-18 | Finisar Corporation | An optoelectronic package |
| JP2008310193A (en) * | 2007-06-18 | 2008-12-25 | Nikon Corp | Polarization correction optical system and microscope device using the same |
| CN201853708U (en) * | 2010-10-22 | 2011-06-01 | 菱光科技股份有限公司 | Image sensing device |
| CN107025451A (en) * | 2017-04-27 | 2017-08-08 | 上海天马微电子有限公司 | A kind of display panel and display device |
| CN107516089A (en) * | 2017-09-08 | 2017-12-26 | 北京眼神科技有限公司 | A kind of fingerprint acquisition device |
| CN208027382U (en) * | 2018-02-06 | 2018-10-30 | 深圳市汇顶科技股份有限公司 | The lower biometric devices of screen and electronic equipment |
-
2019
- 2019-01-15 CN CN201910034578.1A patent/CN109583433A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007056776A2 (en) * | 2005-11-14 | 2007-05-18 | Finisar Corporation | An optoelectronic package |
| JP2008310193A (en) * | 2007-06-18 | 2008-12-25 | Nikon Corp | Polarization correction optical system and microscope device using the same |
| CN201853708U (en) * | 2010-10-22 | 2011-06-01 | 菱光科技股份有限公司 | Image sensing device |
| CN107025451A (en) * | 2017-04-27 | 2017-08-08 | 上海天马微电子有限公司 | A kind of display panel and display device |
| CN107516089A (en) * | 2017-09-08 | 2017-12-26 | 北京眼神科技有限公司 | A kind of fingerprint acquisition device |
| CN208027382U (en) * | 2018-02-06 | 2018-10-30 | 深圳市汇顶科技股份有限公司 | The lower biometric devices of screen and electronic equipment |
Non-Patent Citations (2)
| Title |
|---|
| KUO-CHENG HUANG 等: "Novel Image Polarization Method for Measurement of Lens Decentration", 《IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT》 * |
| 罗婷 等: "指纹采集的数字全息成像方法研究", 《光电子 激光》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020220298A1 (en) * | 2019-04-30 | 2020-11-05 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition apparatus and electronic device |
| CN110728190A (en) * | 2019-09-12 | 2020-01-24 | 惠州市星聚宇光学有限公司 | Optical fingerprint identification lens |
| CN112633048A (en) * | 2019-09-24 | 2021-04-09 | 上海和辉光电有限公司 | Display panel and display device |
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