CN110427919A - Optical detection apparatus - Google Patents
Optical detection apparatus Download PDFInfo
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- CN110427919A CN110427919A CN201910756853.0A CN201910756853A CN110427919A CN 110427919 A CN110427919 A CN 110427919A CN 201910756853 A CN201910756853 A CN 201910756853A CN 110427919 A CN110427919 A CN 110427919A
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- protective layer
- detection
- light beam
- light
- light source
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Classifications
-
- 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
Abstract
The invention discloses a kind of optical detection apparatus; the invention discloses a kind of optical detection apparatus; including protective layer, light source, photoconverter and detection mould group, protective layer includes first surface and second surface, and display module is located at the side that the protective layer deviates from first surface.Light source is located at the side of the second surface, to the top transmitting detection light beam of the first surface of protective layer.Photoconverter is between light source and first surface, and photoconverter, which makes to detect, enters protective layer from second surface after light beam deflects, and some or all of described detection light beam meets the condition at least in protective layer inner total reflection transmission.Detection mould group receives the detection light beam that external object returns and is converted to electric signal to obtain the biological information of external object.The present invention can be realized preferable fingerprint detection effect under shielding.
Description
Technical field
The present invention relates to field of photoelectric technology more particularly to a kind of utilization optical imagery to realize fingerprint detection or other detections
Optical detection apparatus.
Background technique
As technological progress and people's living standard improve, for the electronic products such as mobile phone, tablet computer, camera, user
Require more multi-functional and fashion appeal.Currently, the development trend of the electronic products such as mobile phone is that screen accounting with higher is same
When have the function of fingerprint detection etc..In order to realize screen comprehensively or close to screen effect comprehensively, so that there is electronic product high screen to account for
Than the fingerprinting detection technique under shielding comes into being.However, smooth class display non-spontaneous for liquid crystal display etc., the prior art
Shield lower detection scheme there are no suitable.
Summary of the invention
In view of this, the present invention provides a kind of optical detection apparatus for being able to solve prior art problem.
One aspect of the present invention provides a kind of optical detection apparatus, can actively shine in external object and passing through
The return light for receiving external object realizes biological characteristic detection, comprising: display device with viewing area and is located at viewing area week
The non-display area enclosed, the display device include protective layer, the display module positioned at the lower section of protective layer and the storage protection
The fixed frame of layer and display module, the protective layer includes first surface and second surface, and the display module is located at the guarantor
Sheath deviate from first surface side, the display module can through external exit visible light from protective layer to first surface with
Show image；Light source, positioned at the side of the second surface, the light source emits detection to the top of the first surface of protective layer
Light beam, the light source are connected with the bottom of the fixed frame or side；Photoconverter, positioned at the first of the light source and protective layer
In non-display area between surface, the space between side and display module that the detection light beam passes through fixed frame is passed from light source
Defeated to arrive the photoconverter, the photoconverter is for making at least partly detection light beam sent from the light source according to default expansion
Scattered angle deflected after from the second surface enter the protective layer, some or all of described detection light beam meet at least exist
The condition of the protective layer inner total reflection transmission；Mould group is detected, positioned at the lower section of the protective layer, the detection mould group penetrates institute
Protective layer is stated to receive detection light beam that external object returns and be converted to electric signal to obtain the biological information of external object,
Wherein, the detection mould group has field of view, the detection light beam that the photoconverter issues light source in the first surface
It is deflected towards the direction of the field of view.
In some embodiments, the second surface of the photoconverter and the protective layer is bonded entirely, the detection light beam
At least partly it can define the detection light beam in at least described protective layer inner total reflection transmission and reach the first surface for the first time
Region be predeterminable area, when predeterminable area does not have finger contact, there is detection light beam and be totally reflected in the field of view,
When field of view has finger contact, overflowing at least partially in the ridge contact position of field of view and fingerprint for the detection light beam is anti-
It penetrates, the detection mould group receives irreflexive detection light beam.
In some embodiments, the protective layer has nontransparent region and transparent region, and the nontransparent region is located at institute
It states around transparent region；The light source is located at the lower section in the nontransparent region of the protective layer, and the photoconverter is located at described
Between light source and the nontransparent region of the protective layer, the detection light beam that the light source issues after photoconverter deflection from
Nontransparent region enters protective layer, and can shine directly into the predeterminable area positioned at first surface, and the predeterminable area is extremely
Small part is located at transparent region.
In some embodiments, there are overlapping regions for the predeterminable area and field of view, shine directly into overlapping region
Detection light beam meets condition transmit in protective layer inner total reflection, and the predeterminable area with overlapping non-of the field of view
In the detection light beam of overlapping region at least partly the field of view can be reached after total reflection transmission.
In some embodiments, the light source and photoconverter interval setting, the size of the spacing distance are 1 milli
Rice, 2 millimeters, 3 millimeters, 4 millimeters, 5 millimeters.
In some embodiments, the light source includes luminescence unit and circuit board, and the luminescence unit has light described in face
The light-emitting surface of converter and the lower surface of connection circuit board.
In some embodiments, the shorter side length of the light-emitting surface be no more than 0.5 millimeter, and/or, the circuit board
Shorter side length is no more than 1 millimeter.
In some embodiments, the light source includes multiple luminescence units, and the luminescence unit is top emission type or side
The light-emitting component of light emitting-type, the luminescence unit, which has, is not more than 10 degree, 20 degree, 30 along protective layer lengthwise direction
Degree, 40 degree, 50 degree of light emitting anger, the luminescence unit are sent out with the hair between 40 degree~140 degree of protective layer width axis direction
Optic angle.
In some embodiments, the detection mould group is at least partially disposed at the lower section of the display module, the detection light beam
It is returned to inside the protective layer in the first surface of the protective layer in the ridge generation diffusing reflection of fingerprint and is further transmitted through protection
The second surface outgoing of layer, the detection mould group can receive the inspection being emitted from the protective layer through at least partly display module
Survey light beam and be simultaneously converted to electric signal, the orthographic projection of the light source and the display module on the first surface of the protective layer without
It is overlapped or partly overlaps, and orthographic projection of the light source in the plane perpendicular to first surface is located at the display module at this
The lower section of orthographic projection in plane.
In some embodiments, the display module includes display unit and back light unit, and the display unit is located at described
The lower section of protective layer, the back light unit are located at the lower section of the display unit, and the display unit is shown for image, described
Back light unit is used to provide the backlight beam of the visible light needed for image is shown, the position of the detection mould group for the display unit
It is located at the inside of the back light unit or described in the lower section of the back light unit or at least part of the detection mould group
At least part of detection mould group is located at the inside of the display unit or at least part of the detection mould group positioned at described
Between back light unit and display unit.
The beneficial effects of the present invention are optical detection apparatus of the present invention includes protective layer, detects mould group and light source, described
Protective layer includes first surface and second surface, and light source is for providing detection light beam, and the detection light beam is from the light element
Second surface enter institute's protective layer and can transmit in the protective layer inner full-reflection or be emitted from predeterminable area.Institute
Stating detection light beam can be emitted after diffusing reflection at the ridge of finger from the protective layer away from the side of first surface.The detection
Mould group can receive the detection light beam through the protective layer.The optical detection apparatus can be used in the biology under screen or in screen
Feature detection, including fingerprint detection, fingerprint optical imagery, fingerprint recognition etc..Optical detection apparatus of the present invention, which has, preferably to be referred to
Line detection effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of optical detection apparatus of the present invention；
Fig. 2 is the partial sectional schematic view of optical detection apparatus shown in Fig. 1；
Fig. 3 is the part isometric schematic diagram of optical detection apparatus shown in Fig. 1；
Fig. 4 is the partial sectional schematic view of optical detection apparatus shown in Fig. 1；
Fig. 5 is the partial schematic diagram of light source shown in Fig. 4；
Fig. 6 is a kind of schematic diagram of the partial cross section of optical detection apparatus；
Fig. 7 is a kind of schematic diagram of the partial cross section of optical detection apparatus；
Fig. 8 is the partial sectional schematic view of one embodiment of optical detection apparatus of the present invention；
Fig. 9 is the part isometric schematic diagram of optical detection apparatus shown in Fig. 8.
Specific embodiment
In the specific descriptions to the embodiment of the present invention, it should be understood that when substrate, piece, layer or pattern are referred to as another
When "above" or "below" a substrate, another piece, another layer or another pattern, it can be " directly " or " indirectly " another
On one substrate, another piece, another layer or another pattern, or there may also be one or more middle layers.In order to
The thickness and size of layer each of can be exaggerated, omit or schematically show Figure of description to clear purpose.This
Outside, the size of element and non-fully reflect actual size in attached drawing.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Further, described feature, structure can be incorporated in one or more embodiment party in any suitable manner
In formula.In the following description, many details are provided so as to fully understand presently filed embodiment.However, this
Field technical staff will be appreciated that even if without one or more in the specific detail, or using other structures, group
Member etc. can also practice the technical solution of the application.In other cases, it is not shown in detail or describes known features or operation
To avoid the emphasis of fuzzy the application.
It is the schematic diagram of one embodiment of optical detection apparatus 1 of the present invention please refer to Fig. 1 to Fig. 2, Fig. 1, Fig. 2 is
Partial sectional schematic view of the optical detection apparatus 1 along line A-A in Fig. 1.The optical detection apparatus 1 includes display device 10, light
Converter 17, light source 18, detection mould group 19.The display device 10 includes protective layer 11, display module 12 and fixed frame 13.Institute
Display module 12 is stated to be located at the lower section of the protective layer 11 and can realize that image is aobvious through the protective layer 11 outgoing visible light
Show.The fixed frame 13 stores the display module 12 and protective layer 11.
The protective layer 11 includes opposite first surface 111 and second surface 112, and is located at the first surface
Side between 111 and second surface 112.The display module 12 is located at the side of the second surface 112 of the protective layer 11.Institute
Stating fixed frame 13 includes bottom 131 and side 132, and the bottom 131 is located at the lower section of the display module 12.The side
132 are fixedly connected with the protective layer 11.
In the present embodiment, the side 132 is connected with the side of protective layer 11.In other or alternative embodiment, the side
Portion 132 can be connected with the second surface 112 of protective layer 11.
The light source 18 is located at the side of the second surface 112.The light source 18 is fixed on the bottom of the fixed frame 13
Top transmitting detection light beam 101 in portion 131, for from the first surface to the protective layer 11.The light source 18 and described aobvious
Show that orthographic projection of the mould group 12 on the first surface 111 of the protective layer 11 is non-overlapping.The light source 18 and the display module
12 orthographic projection on the plane perpendicular to the first surface 111 is non-overlapping, and the light source 18 is perpendicular to first surface
Orthographic projection in 111 plane is located at the lower section of the orthographic projection of the display module 121 on this plane.The light source 18 issues
Detection light beam pass through the fixed frame 13 side 132 and the display module 12 between space from the bottom of fixed frame 13
131 tops are transferred to the photoconverter 17.
Optionally, in some embodiments, the light source 18 and the display module 12 are the first of the protective layer 11
Orthographic projection on surface 111 partly overlaps, and orthographic projection of the light source 18 on the plane perpendicular to first surface 111 is located at
The lower section of the orthographic projection of the display module 121 on this plane.
The lower section detected mould group 19 and be located at the display module 12, the detection mould group 19 and the fixed frame 13
Bottom 131 is fixedly connected.Such as, but not limited to, the bottom 131 of the fixed frame 13 has through-hole or groove, the detection mould group
Some or all of 19 are located in the through-hole or groove.The detection mould group 19 is used for through the protective layer 11 and display mould
Group 12 receives the detection light beam 101 that external object returns.
The photoconverter 17 is located at the lower section of the second surface 112, the photoconverter 17 and the second surface
112 fit.The photoconverter 17 is for being projected into the guarantor after being deflected the detection light beam 101 that light source 18 issues
Sheath 11.The detection mould group 19 has preset field angle, has field of view V1 on the first surface 111.
The detection light beam 101 that the photoconverter 17 is used to issue light source 18 is deflected to field of view V1 direction,
So that the incidence angle when detection light beam 101 enters the protective layer 11 becomes larger.The second surface 112 has light incidence section domain
E1, the detection light beam 101 after the photoconverter 17 deflection enter the protective layer 11 from the light incidence section domain E1, and straight
Meet a predeterminable area P1 being irradiated on first surface 111.The predeterminable area P1 is described in the detection light beam 101 enters
The region of the first surface 111 is reached after protective layer 11 for the first time.The light incidence section domain E1 is such as, but not limited to plane or non-
Plane.There are overlapping region Q1 by the predeterminable area P1 and the field of view V1.
Optionally, in some embodiments, the light source 18 and the photoconverter 17 have spacing, and the spacing is 1
Millimeter, 2 millimeters, 3 millimeters, 4 millimeters, 5 millimeters.
Optionally, in some embodiments, the light source 18 and the display module 12 are the first of the protective layer 11
Projection on surface 111, which exists, to partly overlap.
Optionally, in some embodiments, the light source 18 and the display module 12 are perpendicular to the first surface
Projection in 111 plane, which exists, to partly overlap.
Optionally, in some embodiments, the part that the side of the protective layer 11 is connect with the fixed frame 13 is inside
The fixed frame 13 is blocked by the protective layer 11 when being recessed, and looking over from the first surface 111 of the protective layer 11.It is described
There is " screen comprehensively " effect when optical detection apparatus 1 is looked over from first surface 111 at this time.
Optionally, in some embodiments, the fixed frame 13 can be center, the frame etc. in the electronic products such as mobile phone
For playing the role of the component supported and fixed.The fixed frame 13 may include metal and/or plastics or other suitable materials
Material.Change ground, the bottom 131 and/or side that the display module 12 passes through glue, double-sided adhesive, bolt, buckle and fixed frame 13
Portion 132 is fixedly connected or is detachably connected.Optionally, the bottom 131 and/or side of the display module 12 and the fixed frame 13
Padded coaming, such as, but not limited to foam etc. are filled between portion 132.
The protective layer 11 has connected transparent region 120 and nontransparent region 110.110, the nontransparent region
Around the transparent region 120 or edge.The transparent region 120 is used for through visible light and detection light beam 101.It is described
Nontransparent region 310 is for blocking visible light and transmission detection light beam 101.The visible light beam that the display module 12 issues passes through
The transparent region 120 is emitted to the outside of optical detection apparatus 1, to realize that image is shown.It uses in the nontransparent region 110
Visible light beam in the visible light beam and environment light for blocking the sending of display module 12, thus, so that user is described
It can't see the element inside optical detection apparatus 1 in nontransparent region 110.
Illustratively, the protective layer 11 may include transparent material, such as, but not limited to, transparent glass, transparent polymeric
Object material, any other transparent material etc..The protective layer 11 can be single layer structure or multilayered structure.The protective layer
11 substantially have the thin plate of predetermined length, width, thickness.Y-axis in the length axis respective figure of the protective layer 11, width
X-axis in axis respective figure, the Z axis in thickness axis respective figure.
In general, defining the display module 12 shows that the region of image is viewing area (not indicating), and the viewing area is all
Enclosing can not show that the region of image is non-display area (not indicating).Viewing area described in 120 face of transparent region, and it is described
Upright projection of the area pellucida domain 120 in the viewing area is located among the viewing area or is completely coincident with the viewing area.It is described
Nontransparent region 110 covers the non-display area, and exceeds the non-display area along the direction away from the viewing area.That is,
The area in the nontransparent region 110 is greater than the area of the non-display area.When user uses optical detection apparatus 1, user
It is identical as 120 size of transparent region in the display area that the front of the optical detection apparatus 1 can actually be seen.
Optionally, in some embodiments, the field of view V1 is located at the surface of the regional area of the viewing area.
Further alternative, the detection mould group 19 includes imaging sensor and the super micro-lens above imaging sensor,
Wherein, the super micro-lens converges to described image sensor for will test light beam 101, and described image sensor is used for
Transition detection light beam 101 is corresponding electric signal, and the super micro-lens and described image sensor are in the first surface 111
Upright projection be located within the field of view V1, and the area of the upright projection be less than the field of view V1 face
Product.
The nontransparent region 110 includes the upper surface and lower surface being oppositely arranged.The transparent region 120 includes opposite
The upper and lower surfaces of setting.The upper surface of the first surface 111 of the protective layer 11 including the nontransparent region 110 and
The upper surface of the transparent region 120.The second surface 112 of the protective layer 11 includes the following table in the nontransparent region 110
The lower surface in face and the transparent region 120.The first surface 111 is the upper surface of the protective layer 11, second surface 112
For the lower surface of the protective layer 11.
The nontransparent region 110 is used for through the detection light beam 101 and blocks visible light beam.In the implementation of the application
In mode, the nontransparent region 110 to it is described detection light beam 101 transmitance be greater than 50%, 55%, 60%, 65%,
70%, 75%, 80%, 85% or 90%.When transmitance of the nontransparent region 110 to the detection light beam 101 is bigger
When, intensity of the detection light beam 101 after penetrating the protective layer 11 is bigger.
In addition, the nontransparent region 110 block referring to visible light beam: the nontransparent region 110 is to visible
The transmitance of light beam is less than 10%, 5% or 1% or even the nontransparent region 110 is 0 to the transmitance of visible light beam.When
The transmitance of the visible light beam is got over hour in the nontransparent region 110, and the nontransparent region 110 is to the visible light beam
Block it is more.Certainly, ground is changed, the nontransparent region 110 is also not limited to be less than to the transmitance of visible light beam
10%, as long as can't see internal element through the nontransparent region 110 from the external of the protective layer 11.It is described non-
Area pellucida domain 110 for example but is not limited to by absorbing and/or reflecting the visible light beam, blocks the visible light to realize
Beam.
The display module 12 is located at the lower section of the transparent region 120.The photoconverter 17 is the non-transparent area
The lower section in domain 110, the light source 18 are located at the lower section in the nontransparent region 110 and are located at the lower section of the photoconverter 17.
The detection mould group 19 is located at the lower section of the display module 12.In the present embodiment, the photoconverter 17 and described nontransparent
The lower surface in region 110 is bonded setting entirely, such as, but not limited to, under the photoconverter 17 and the nontransparent region 110
There is no air between surface, detection light beam 101 enters from photoconverter 17 without air after the conversion of photoconverter 17 to be protected
Sheath 11.Such as, but not limited to, the photoconverter 17 can connect the protective layer by optical cement or other bonding mediums
11, detection light beam 101 enters protective layer 11 through optical cement or other bonding mediums from photoconverter 17.
Optionally, other or change embodiment in, the following table surface frame of the photoconverter 17 and the nontransparent region 110
It is sticked and sets, such as, but not limited to, there are air for the lower surface in the photoconverter 17 and nontransparent region 110.
In this application, it is illustrated by taking a detection mould group 19 as an example, correspondingly, the detection mould group 19 is in the guarantor
Field of view V1 on the first surface 111 of sheath 11 is 1.The field of view V1 is at least partially disposed at the transparent region
Among 120.The area of the field of view V1 is less than the surface area of the upper surface of the transparent region 120.The field of view
V1 is adjacent to the described first nontransparent region 110.Optionally, in some embodiments, the quantity of the detection mould group 19 can be
The multiple or described detection mould group 19 may include multiple receiving units, and the multiple receiving unit is on the second surface 112
With multiple field of view V1, so as to expand the sensing area of biological characteristic.Even, the multiple field of view V1 can be with
Expand to the upper surface of entire transparent region 120.To realize full frame biological characteristic sensing.
In the present embodiment, the first surface 111 is the upper surface of the protective layer 11, and the second surface 112 is institute
The lower surface of protective layer 11 is stated, the first surface 111 and second surface 112 are oppositely arranged.Optionally, other or change are implemented
In example, the second surface 112 can be the inclined-plane or side of the protective layer 11.The side of the protective layer 11 can be flat
Face or flexure plane.
The optical detection apparatus 1 can pass through the biological information for detecting external object, generation external object
Image, detect external object position, judge whether external object is live subject etc..In the present embodiment, with fingerprint detection
For, touch area of the user's finger in first surface 111 when some or all of described field of view V1 is fingerprint detection.Institute
The surface that directly contacts of user's finger 1000 when the first surface 111 for stating protective layer 11 is fingerprint detection, the usually optics
The outermost of detection device 1 or the electronic product including the optical detection apparatus 1.For convenience of description, the predeterminable area P1
Also the detection light beam 101 is considered as in the region of 111 direct irradiation of first surface.Part in the detection light beam 101
Or all meet the condition that total reflection transmission is carried out in the protective layer 11.
When not there is the contact of user's finger 1000 on the predeterminable area P1, there is detection light beam 101 in the visual field area
Domain V1 is totally reflected.When have on the field of view V1 user's finger 1000 contact when, detection light beam 101 with the visual field
Diffusing reflection occurs at the fingerprint ridge that region V1 is in contact, detection light beam 101 is sent out at the field of view V1 and fingerprint valley face
Raw total reflection.Wherein, occur at least partly be pierced by the protective layer 11 and described aobvious in irreflexive detection light beam 101
Show that mould group 12 is received by the detection mould group 19.It is corresponding electricity that the detection mould group 19, which converts the detection light beam 101 received,
Signal is to obtain finger print information.
In the present embodiment, the predeterminable area P1 and field of view V1 have overlapping region Q1.The predeterminable area P1 is not
It is non-overlapping region N1 with the part that the field of view V1 is overlapped.The area of the overlapping region Q1 is not less than the visual field area
The 30% of the area of domain V1.Such as, but not limited to, the area of the overlapping region Q1 is the area of the field of view V1
50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 100%.When the overlapping region Q1 accounts for institute
When stating the area ratio of field of view V1 and reaching 100%, the overlapping region Q1 is the field of view V1, the visual field area
Domain V1 is a part of the predeterminable area P1.
When there are not user's finger contacts on the field of view V1, can be totally reflected on the field of view V1
Detection light beam 101 include from non-overlapping region (predeterminable area P1 not with field of view V1 overlap region be non-overlapping region)
The detection light beam of the field of view V1 is reached by multiple total reflection transmission, or/and, enter the protection from the light source 18
The overlapping region Q1 is reached behind 11 inside of layer for the first time and meets the detection light beam 101 being totally reflected in overlapping region Q1.
Some or all of the detection light beam 101 being irradiated on the predeterminable area P1 other than the overlapping region Q1 can be complete
The field of view V1 (overlapping region Q1 and visual field area including field of view V1 and predeterminable area P1 are reached after transmission and reflection
The region that domain V1 is not overlapped with predeterminable area P1).When user's finger touch the field of view V1 when: from light incidence section domain 113 into
Diffusing reflection occurs at the ridge of fingerprint for the detection light beam 101 for entering and reaching for the first time the overlapping region Q1 and in overlapping region
Q1 at paddy with respect to being totally reflected；The visual field is transferred to from the part other than the overlapping region of predeterminable area P1 by total reflection
Diffusing reflection equally occurs at the ridge of fingerprint and occurs entirely in overlapping region Q1 with respect at paddy for the detection light beam 101 of region V1
Reflection.It detects mould group 19 and receives irreflexive detection light beam 101 simultaneously far from the side of the first surface in the protective layer 11
For fingerprint imaging.It should be noted that the first surface 111 is optical detection apparatus 1 or fills including the optical detection
The outermost surfaces of 1 electronic product are set, the detection mould group 19 is located at the protective layer 11 backwards to the side in the outside.
Optionally, in some embodiments, the predeterminable area P1 can be located among the field of view V1, Huo Zhesuo
State that field of view P1 is located among the predeterminable area P1 or the predeterminable area P1 and field of view V1 partly overlaps,
Or no overlap between the predeterminable area P1 and field of view V1.When no overlap between predeterminable area P1 and field of view V1,
The predeterminable area P1 and the setting of the interval field of view V1 are disposed proximate to.The embodiment of the present invention is not construed as limiting this.
Optionally, in some embodiments, the optical detection apparatus 1 is applied in an electronic product, and the electronics produces
Product include the middle line from its top to its bottom end, and the center of the field of view V1 can be located on the middle line or close to described
Middle line setting.
Optionally, in some embodiments, the optical detection apparatus 1 is applied in an electronic product, and the electronics produces
Product include the middle line from its top to its bottom end, and the center of the predeterminable area P1 can be located on the middle line or close to described
Middle line setting.
Optionally, in some embodiments, the optical detection apparatus 1 is applied in an electronic product, the visual field area
3 to 20 millimeters or 3 to 15 millimeters or 3 to 10 millimeters are divided between domain V1 and the bottom margin of the electronic product.Into one
Step is optional, in some embodiments, the bottom sides of the light source 18 and the neighbouring electronic product of the detection mould group 19
Edge setting, the detection mould group 19 of light source 18 is more adjacent to the bottom margin of the electronic product, the detection mould group 19
Horizontal distance with the light source 18 is 10 to 15 millimeters.
Referring to Fig. 3, for the light incidence section domain E1 there are a point, the overlapping region Q1 is described there are b point in the present embodiment
Shortest straight line of the straight line ab between the light incidence section domain E1 and the overlapping region Q1.The straight line ab and the overlapping region
1 or first surface 111 angle not less than the critical angle that is totally reflected in the protective layer 12 of detection light beam 101.
That is, the detection light beam 101 of the shortest distance from the light incidence section domain 113 to the overlapping region meets in the protection
The condition that total reflection transmission is carried out in layer 11, alternatively, the light source 18 is projected directly at the friendship by the second surface 112
The detection light beam 101 in folded region can carry out total reflection transmission in the protective layer 11.
Optionally, in some embodiments, exist between the light incidence section domain 113 and the predeterminable area P1 most short straight
Line, the angle between the shortest straight line and the normal of the predeterminable area P1 is not less than detection light beam 101 in protective layer 11
The critical angle for carrying out total reflection transmission, alternatively, from the light incidence section domain 113 to the detection of the shortest distance of the predeterminable area P1
Light beam 101 meets the condition that total reflection transmission is carried out in the protective layer 11, alternatively, the light source 18 passes through second table
The satisfaction of detection light beam 101 that face 112 is projected directly at the predeterminable area P1 carries out total reflection transmission in the light element
Condition.
Optionally, in some embodiments, exist between the light incidence section domain 113 and the field of view V1 most short straight
Line, the angle between the shortest straight line and the normal of the field of view V1 is not less than detection light beam 101 in protective layer 11
The critical angle for carrying out total reflection transmission, alternatively, from the light incidence section domain 113 to the detection of the shortest distance of the field of view V1
Light beam 101 meets the condition that total reflection transmission is carried out in the protective layer 11, alternatively, the light source 18 passes through second table
The detection light beam 101 that face 112 is projected directly at the overlapping region meets carries out total reflection transmission in the protective layer 11
Condition.
Optionally, in some embodiments, it is possible to understand that, as long as the detection light beam 101 that the light source 18 emits can
It reaches the photoconverter 17 and further E1 enters protective layer 11 from light incidence section domain.The light source 18 can be set to be examined in optics
Survey any position of device 1.Such as, but not limited to, light source 18 can be set in display module 12 or detect the lower section of mould group 19 simultaneously
The detection light beam 101 of sending is conducted to the photoconverter 17 by a light-guide device.The light-guide device can be reality
The light guide structure of the heart, and/or, the light-guide device can be the light guide structure of cavity.Optionally, in some embodiments, institute
The detection light beam 101 for stating the sending of light source 18 can directly reach the light incidence section domain E1, without passing through light-guide device.Further
Optionally, the photoconverter 17 be can be omitted or be integrated in some embodiments in the protective layer 11.Such as it is but unlimited
In the protective layer 11 is integrated with the function of photoconverter 17, and the detection light beam 101 that the light source 18 issues shines directly into institute
State the inspection that light incidence section domain E1 will enter without being subjected to other light-switching devices, the protective layer 11 from the light incidence section domain E1
The incident angle of survey light beam 101 shines directly into predeterminable area P1 after being deflected.When fingerprint detection, described in the ridge contact of fingerprint
The corresponding part of field of view V1, the paddy of fingerprint and the field of view V1 have spacer.The spacer can be air,
Water etc..Generally, the spacer between the paddy of fingerprint and the field of view V1 is air.Certainly, due to originals such as finger perspirations
Cause, the spacer between the paddy of fingerprint and the field of view V1 can be liquid or other.Embodiment of the present invention with
Parting is described for air, it will be understood that other possible spacers also belong to the scope of the invention, and the embodiment of the present invention is to this
It is not construed as limiting.
Although it should be understood that illustratively generally being retouched by taking fingerprint as an example in the application context
It states, but the optical detection apparatus 1 is not limited to the detection of fingerprint, the test object of the optical detection apparatus 1 can be
Any object to be imaged.Normally, test object can have the various features including biological characteristic.It needs to illustrate
It is, as an example, optical detection apparatus of the present invention 1 is described using finger print as test object, it will be understood that palm,
The lines such as toe, palmmprint, skin surface texture can be used as the spy of test object or external object to be detected of the invention
Sign.
Since fingerprint has ridge and paddy, when carrying out fingerprint detection, ridge contacts (the i.e. described optical detection of first surface 111
The outer surface for user's touching of device 1).In contrast, paddy does not contact first surface 111, between paddy and first surface 111
With spacer, spacer is such as, but not limited to air.It should be understood that can also have on fingerprint such as stain, ink,
The substances such as moisture, the embodiment of the present invention are equally applicable to the optical imagery of the fingerprint with these substances.
Diffusing reflection occurs at the ridge of fingerprint for the detection light beam 101.The detection mould group 19 can penetrate the protection
The detection light beam 101 that layer 11 and display module 12 are returned received from ridge.The detection mould group 19 receives the detection light beam 101 simultaneously
Be converted to electric signal.The electric signal can be used in the optical imagery or fingerprint detection of fingerprint.It is radiated at field of view V1 and paddy
The detection light beam 101 at opposite place is totally reflected.
It should be noted that the overlapping of field of view V1 described in this application and predeterminable area P1 includes: field of view
V1 and predeterminable area P1 is completely coincident, field of view V1 is predeterminable area P1 a part of region, predeterminable area P1 are visual field area
A part or predeterminable area P1 and field of view V1 of domain V1 has common partial region.
It should be noted that attached drawing of the present invention is merely illustrative expression, in fact, the ridge of fingerprint, paddy it is small-sized (about
It is 300~500 microns), and it is about 4 millimeters * 4 millimeters~10 millimeter * 10 that the fingerprint region size detected is needed when fingerprint detection
The region or wider region of millimeter.
It should be noted that although the E1 of light incidence section domain described in the present embodiment is located at the second surface 112, the present invention
It is fixed to be not limited thereto, and the light incidence section domain E1 can be in the other positions of the protective layer 11.Such as, but not limited to, it is described enter
Light region E1 can be located on a side of the protective layer 11, and the side of the protective layer 11 can be with its first surface
111 with second surface 112 be connected.Or the light incidence section domain E1 can be located on an inclined-plane of the protective layer 11,
The inclined-plane can the relatively described first surface 111 or second surface 112 there is certain inclination angle.Therefore, the light incidence section domain
E1 can be located at any suitable location of the protective layer 11, and this is not limited by the present invention.
Optionally, other or change embodiment, the part for shining directly into the detection light beam 101 of the predeterminable area P1 are full
Foot is in the condition of 100 inner total reflection of light element transmission, and described another part detected in light beam 101 is in predeterminable area P1
Upper generation refraction and/or reflection.
It is further alternative, it is irradiated to the no less than part of 20%-30% in the detection light beam 101 of predeterminable area P1 and meets
In the condition of 11 inner total reflection of protective layer transmission.At this point, such as, but not limited to, the general power of the light source 18 can be 90mW
(milliwatt)~120mW, when the light source include 3 light-emitting components when, each light-emitting component power can for 30mA (milliampere)~
40mA, electric current can be 70mA.Certainly, it is irradiated to the detection light beam 101 of the condition of the satisfaction total reflection transmission of predeterminable area P1
Ratio can be greater than 30%, 40%, 50%, the electric current of light source 18 or power suitably can be adjusted accordingly at this time, so as to
Reduce energy consumption and fever.And when the ratio of the detection light beam 101 for the satisfaction total reflection transmission conditions for being irradiated to predeterminable area P1 is small
When 20% or 10%, the electric current or power of light source 18 then need to increase accordingly, to meet required for fingerprint optical imagery
Light intensity.
Optionally, other or change embodiment, from the light incidence section domain E1 enter protective layer 11 detection light beam 101 portion
Divide or all meet the condition transmitted in 11 inner total reflection of protective layer.The condition of the total reflection transmission includes: the inspection
Survey light beam 101 protective layer 11 first surface not with the ridge contact position of fingerprint be totally reflected, in the second surface of protective layer 11
Upper total reflection.The detection light beam 101 occurs unrestrained anti-in the first surface of protective layer 11 and 1100 contact position of ridge of fingerprint 1000
It penetrates.
Optionally, in some embodiments, when the first surface 111 and second surface 112 of the protective layer 11 be not opposite
When setting, such as, but not limited to, the first surface 111 is the upper surface of the protective layer 11, and the second surface 112 is institute
The side of protective layer 11 is stated, the protective layer 11 further includes the third surface opposite with the first surface 111 at this time.The inspection
It surveys light beam 101 and enters protective layer 11 from second surface 112, and can be totally reflected on first surface 111 and third surface,
And then it is transmitted in 11 inner total reflection of protective layer.
Optionally, in some embodiments, the detection light beam 101 by the photoconverter 17 deflection is in first table
The incidence angle in face 111 is more than or equal to preset threshold.Illustratively, the protective layer 11 is such as, but not limited to transparent glass
Glass, refractive index n1=1.5, air refraction n0=1.0.The preset threshold can be 42 degree.Optionally, it is contemplated that material
Material and assembly error, in some embodiments, the preset threshold are 42 degree ± 3 degree.Certainly, other or change embodiment in,
When material difference, different materials refractive index is different, preset threshold also can corresponding change, belong to the scope of the present invention.This hair
Bright embodiment is not construed as limiting this.
In the present embodiment, the detection light beam 101 is black light, including but not limited near infrared light.The near-infrared
Light is, for example, the light beam of 750~2000nm of wave-length coverage (nanometer).Exemplary, such as, but not limited to, the detection light beam 101 is
The near infrared light of 800~1200nm of wavelength.
Optionally, the detection light beam 101 that the light source 18 issues shines along protective layer 11 length axis (Y-axis) direction
Range has 20 to 140 degree angles with 10 to 50 degree angles and along the light emitting region in protective layer width axes (X-axis) direction.It can
Choosing, in some embodiments, light emitting region of the detection light beam 101 along protective layer 11 length axis (Y-axis) direction has
20 to 30 degree angles.
Optionally, in some embodiments, the detection light beam 101 that the light source 18 issues include two the first light 101a and
Second light 101b, the light 101a and 101b is located at lengthwise direction (the i.e. Y-axis in Fig. 1, Fig. 2 along the protective layer 11
Direction) perpendicular in the plane of the first surface 111, the angle of the first light 101a and the second light 101b are α, institute
It states angle α to be such as, but not limited to: no more than 10 degree, 20 degree, 30 degree, 40 degree, 50 degree.Wherein, optionally, the light source 18 has
There are the light-emitting surface parallel with first surface 111, the first light 101a and/or the relatively described first surface of the second light 101b
The angle of 111 normal is not more than 10 degree, 15 degree, 20 degree, 25 degree.
Please refer to Fig. 4, be in Fig. 1 optical detection apparatus 1 along the partial sectional schematic view of line B-B.The light source 18
Including luminescence unit 181.Illustratively illustrate in Fig. 4 luminescence unit 181 quantity be 4, but the present invention not as
It limits, the quantity of the luminescence unit 181 can be one or more.As shown in figure 4, the luminescence unit 181 is along the x axis
It is arranged in a row.Optionally, shown light source 18 further includes circuit board 182.The luminescence unit 181 is electrically connected the circuit board 182,
The circuit board 182 is that the luminescence unit 181 provides the required electric signal that shines, and the electric signal is such as, but not limited to electricity
Stream, voltage etc..
It is the schematic diagram of light source 18 shown in Fig. 4 please refer to Fig. 5.The detection light beam that the luminescence unit 181 issues
101 further include third light 101c and the 4th light 101d, and shown third light 101c and the 4th light 101d are along the x axis
Perpendicular in the plane of the first surface 111, the angle β between the third light 101c and the 4th light 101d is not less than
20 degree.Optionally, such as, but not limited to, 20 degree≤β≤140 degree.Alternatively, β=20 degree, 30 degree, 40 degree, 50 degree, 60 degree, 70
Degree, 80 degree, 90 degree, 100 degree, 110 degree, 120 degree, 130 degree, 140 degree.
In the present embodiment, the detection light beam 101 converted by the photoconverter 17 is uncollimated rays.That is,
Incidence angle when the detection light beam 101 is irradiated from from light incidence section domain E1 to predeterminable area V1 can not be identical.The detection light beam
101 have preset diffusion angle, such as, but not limited to, the detection light after deflection after the photoconverter 17 deflection
Beam 101 is 10 degree~60 degree including the horizontal proliferation angle of length axis and width axes on inner horizontal (X/Y plane), flat in XZ
Vertical proliferation angle on face is 10 degree~60 degree.Detection light beam 101 after the deflection of photoconverter 17 includes a plurality of detection light,
The horizontal proliferation angle can be regarded as the angle of projection of the maximum two detections light of angle on X/Y plane, described vertical
Angle of flare is considered as the angle of projection of the maximum two detections light of angle in XZ plane.Optionally, some embodiments
In, the detection light beam 101 after deflection is in the length axis and width axes for including protective layer 11 on inner horizontal (X/Y plane)
Horizontal proliferation angle be 20 degree~80 degree or 30 degree~140 degree, vertical proliferation angle in XZ plane is 20 degree~80 degree or 30
~140 degree of degree.
It is appreciated that the area of the predeterminable area P1 enters greater than described in since the detection light beam 101 is there are angle of flare
The area of light region E1.
The area of upright projection of the detection mould group 19 in the first surface 111 is less than the face of the field of view V1
The long-pending or described detection mould group 19 is located in the field of view V1 in the upright projection of the first surface.The optical detection
Device 1 is imaged by acquiring irreflexive detection light beam 101, to realize fingerprint detection and identification.It is described irreflexive
The detection mould group 19, the small volume of the detection mould group 19 can be entered with different incidence angles by detecting light beam 101.
Optionally, in some embodiments, the field of view V1 is located at the surface of the regional area of the viewing area.
Further alternative, the detection mould group 19 includes imaging sensor and the super micro-lens above imaging sensor,
Wherein, the super micro-lens converges to described image sensor for will test light beam 101, and described image sensor is used for
Transition detection light beam 101 is corresponding electric signal, and the super micro-lens and described image sensor are in the first surface 111
Upright projection be located within the field of view V1, and the area of the upright projection be less than the field of view V1 face
Product.
Certainly, in some embodiments, it is also possible to using collimated light as detection light beam.If be appreciated that using quasi-
Collimated optical beam as detection light beam, then will lead to predeterminable area width and light incidence section domain it is of same size.Due to present mainstream
The electronic product that image is shown of being able to carry out all pursuing screen and narrow frame comprehensively, the optical detection apparatus 1 is for showing
The region of image is properly termed as visible area, and the part of image is known as rim area to not showing around visible area.The rim area
It is relatively narrow, and shown in order to not influence the image of visible area, the light incidence section domain 113 is normally at the optical detection apparatus 1
Rim area, so the width in the light incidence section domain 113 is also very small.Illustratively, the width of the light incidence section domain E1 is 0.5
Millimeter~1 millimeter.Correspondingly, cause the width of predeterminable area P1 also can be very small, and field of view V1 is generally 5 millimeter of * 5 milli
The border circular areas that the rectangle or radius of rice are 2 to 5 millimeters.Due to the parallel transmission feature of collimated light, the width of predeterminable area P1
Less than the width of field of view V1.At this time, it is likely that following problems occur: there are certain positions not to have on the field of view V1
There is detection light beam that can shine directly into, also no detection light beam can reach this of the field of view V5 after total reflection
A little positions.As shown in fig. 6, there are such cases that light beam irradiation is not detected in partial region to cause to correspond to these by field of view V1
The partial fingerprints of position can be detected.Therefore, although the detection light beam of collimated light also can fingerprint detection or optics at
Picture, but have the shortcomings that it is larger, on the detection efficiency and image quality for fingerprint be not so good as non-collimated light detection light beam
101。
Certainly, in other embodiments, non-collimated detection light beam 101 also can be used.Please refer to Fig. 7.It is described
Non-collimated detection light beam 101 is by being pierced by the protective layer 11 after total reflection and can further be connect by a detection mould group
It receives, is imaged and is detected at this point, being equivalent to the optical detection apparatus 1 and receiving the detection light beam 101 being totally reflected.For example, non-
The detection light beam 101 of collimation appears the protective layer 11 of the optical detection apparatus 1 after the total reflection of the upper surface of light element 100
And it is further detected mould group and receives.When fingerprint detection, user's finger is touched on the first surface 111 of protective layer 11 by the inspection
The predeterminable area P1 for surveying 101 direct irradiation of light beam is irradiated to the detection light beam 101 at ridge and diffusing reflection occurs without by the inspection
Survey mould group receives or detects mould group and receives this part detection 101 light intensity of light beam less than incident light.It is irradiated to the inspection of other positions
It surveys the generation of light beam 101 total reflection and the optical element being bonded by one with 11 lower surface of protective layer is emitted to display module 12,
And can further be pierced by the display module 12 and be detected the reception of mould group, this part that detection mould group receives is complete at non-ridge
The light intensity of reflection is as incident light.To obtain the image with comparison of light and shade of fingerprint.So, it in these embodiments, needs
Optical element is set on the second surface 112 of protective layer 11, so that first surface of the detection light beam 101 in protective layer 11
It can be emitted from lower surface after being totally reflected on 111.The optical element, which is arranged, necessarily causes the cost of optical detection apparatus 1 to increase
Add, assemble complexity increase.Moreover, since the detection light beam 101 is non-collimated light, being incident upon institute in these embodiments
With certain angle of divergence when stating the predeterminable area P1 of the first surface 111 of protective layer 11, therefore the width of the predeterminable area P1
Degree is greater than the width in light incidence section domain 113.Correspondingly, reflected light of the detection light beam 101 after the total reflection of predeterminable area 15
With certain angle of divergence, it is possible to understand ground, be all-trans be incident upon the detection light beam 101 of the lower surface of the protective layer 11 from
The lower surface outgoing, width of the detection light beam 101 of outgoing in the corresponding exit area having in the lower surface are greater than
The width of the predeterminable area P1.Therefore, the finger that the detection light beam 101 for being totally reflected to second surface 112 and being emitted is formed
Print image will appear more serious amplification phenomenon, so as to cause fingerprint image deformation.In addition, the detection light beam 101 is in institute
The exit area area for stating second surface 112 is larger, correspondingly, the detection mould group of the detection light beam 101 for receiving outgoing needs
The detection light beam 101 come out from the exit area can be received by wanting biggish volume and area.Such as, but not limited to, it detects
Mould group needs biggish photosensitive area or large volume of lens etc..For example, the detection mould group needs that larger volume is arranged
Lens, the cross-sectional area of the lens need the area not less than the predeterminable area P1；Or the detection mould group needs to be arranged
Large volume of imaging sensor, the area of the photosensitive region of the reception detection light beam 101 of described image sensor need not small
In the area of the predeterminable area P1.In this way, in order to which the detection mould group is arranged, or even need to tie up the sky of other component script
Between, these can all influence the overall volume, cost and assembling of optical detection apparatus, can not be suitable for meeting being arranged in mobile phone etc.
Demand inside electronic product.
Furthermore according to ATR Optical principle, light beam 101 is detected in the second surface of the protective layer 11 after total reflection
The horizontal distance of 112 exit area and the light source 18 be greater than the predeterminable area P1 and the light source 18 it is horizontal away from
From.Moreover, the exit direction for the detection light beam 101 being emitted from the exit area follows reflection and refraction principle, therefore receive
The detection mould group of these detection light beams 101, which needs to be arranged, just can guarantee reception and imaging effect on corresponding emitting light path.Cause
This, the horizontal distance of detection mould group and light source 18 is greater than the horizontal distance of the predeterminable area P1 and light source 18.Detect mould group
Need to be located at the side of the predeterminable area P1 far from light source 18, detection light beam 101 needs farther in 11 internal transmission of protective layer
Path could be emitted, and part other than predeterminable area P1 is needed to be transmitted.In this case, if predeterminable area P1
When fracture, breakage occurs in protective layer 11 between above-mentioned exit area, detection light beam 101 will be unable to smoothly pass through total reflection
It is emitted from the exit area of second surface 112.In other words, it will affect inspection when area damage other than the exactly described predeterminable area P1
The reception and imaging for surveying light beam, cause user experience to decline.
When carrying out fingerprint detection, including but not limited to, to optical detection apparatus 1 or the electricity including optical detection apparatus 1
When sub- product unlock, payment, authentication, user's finger touches the field of view V1.Define on the field of view V1 with
The region of the ridge contact of fingerprint is ridge region, and passing through the opposite region of spacer with the paddy of fingerprint is paddy region.Directly or through
Diffusing reflection occurs for the detection light beam 101 in indirect irradiation to the ridge region after total reflection, in irreflexive detection light beam 101
At least partly through the transparent region 120 lower surface 122 and the display module 11 reach the detection mould group 19.Institute
It states detection mould group 19 to receive the detection light beam 101 and be converted to corresponding electric signal, the electric signal is such as, but not limited to, can
To be used to form the characteristic image of the fingerprint, or the feature for indicating the fingerprint.
It is totally reflected directly or through the detection light beam 301 in indirect irradiation to the paddy region after total reflection transmission.By
It is opposite by the paddy of spacer and fingerprint in paddy region, in the present embodiment, it is described so that spacer is air as an example, this field
Technical staff is appreciated that the spacer can be water, liquid, sweat stain or other objects.Optionally, other or change are real
Apply in example, when fingerprint detection, the partial region of the predeterminable area P1 does not contact ridge, also without and paddy it is opposite, these regions
It is the region that fingerprint is not covered with, defining the region not covered by fingerprint on predeterminable area P1 is empty region.Shine directly into institute
The detection light beam 101 stated on empty region is totally reflected.
Optionally, the optical detection apparatus 1 further includes bracket, and the light source 18 can pass through glue, double-sided adhesive, bonding
The modes such as object, bolt, bracket, buckle, card slot, welding are fixedly connected or are detachably connected with the bracket.Optionally, the inspection
Surveying mould group 19 can be solid by the modes such as glue, double-sided adhesive, sticky object, bolt, bracket, buckle, card slot, welding and a bracket
It connects or is detachably connected calmly.It is further alternative, the bracket can for it is any for and the protective layer 11 and/or described
The component that display module 12 is fixedly connected.The light source 18 and the detection mould group 19 can pass through the bracket and the fixation
Frame 13 connects, or: the bracket is the component part of the fixed frame 13 or fixed frame 13.
In the present embodiment, the display module 12 can be such as, but not limited to liquid crystal display die set, electronic paper display mould
Group, micro display projector mould group etc..The display module 12 may include the display unit positioned at the lower section of the protective layer 11
With the back light unit being located at below the display unit.The back light unit is used to provide the back of visible light to the display unit
Light light beam, the display unit are used to show image under backlight beam illumination.The display unit and back light unit energy
The detection light beam that enough transmissions are emitted after diffusing reflection at the finger ridge of predeterminable area from the light element lower surface.Into one
Step is optional, and the detection mould group 19 is at least partially disposed at below the back light unit；Or the detection mould group 19 is at least partly
Inside the display unit or the detection mould group 19 is at least partially disposed inside the back light unit or the detection
Mould group 19 is at least partially disposed between the display unit and back light unit.
Optionally, in other or change embodiment, the display module 12 includes two opposite substrates and is located at the base
Display layer between plate, the display layer can be Organic Light Emitting Diode (OLED) layer or liquid crystal layer.It needs to illustrate
It is that the present invention is not limited thereto, the display module 12 can be other display module, display component or displays appropriate
Device.Optionally, in some embodiments, the display module 12 can be self-luminous display part, the display module 12
A self light-emitting display device is collectively formed with protective layer 11.
In the present embodiment or in other change embodiments, the photoconverter 17 includes optical thin film, grating, diaphragm, light
It learns in micro-structure, diffraction optical element, lens, prism, prism structure, billiard table structure, semi-cylindrical in configuration or other optical textures
One or more or above-mentioned combinations etc..Optionally, in some embodiments, the photoconverter 17 also can be omitted or
It is integrated in the protective layer 11.Optionally, in some embodiments, going out for the light source 18 is arranged in the photoconverter 17
Between smooth surface and the lower surface of the protective layer 11, or, the photoconverter 17 and the protective layer 11 are integrally formed, it is described enter
Light region E1 is the part of the surface of the photoconverter 17.
In the present embodiment, the light source 18 is located at the lower section of the photoconverter 17 and sets with the photoconverter 17 interval
It sets.Angle of flare along the y axis of the light source 18 on X/Y plane is less than its angle of flare along the x axis.The luminous list
Member 181 is arranged in a row along the x axis.In order to improve the utilization rate that light source 18 issues detection light beam 101, the photoconverter 17 has
There is the strip of substantially long rectangular shape and the light source 18 corresponding.Preferably, the photoconverter 17 is multilayer optical
Learn film or diffraction optical element.Certainly, the photoconverter 17 can also be, for example, prism, optical microstructures etc., and the present invention is not
It limits.
Optionally, in some embodiments, 181 width of luminescence unit (along the y axis) is 0.5 millimeter, described to shine
Unit 181 is top emission type light-emitting component.Illustratively, the size of the luminescence unit 181 is 1 millimeter * 0.5 millimeter * 1 milli
Rice.Optionally, in some embodiments, the luminescence unit 181 can be side light emission type light-emitting component.
Optionally, in some embodiments, the quantity of the predeterminable area P1 can be it is multiple, it is such as, but not limited to, described
The top and bottom of protective layer 11 are nearby respectively provided with different predeterminable area P1.
Optionally, in some embodiments, the quantity of the light incidence section domain E1 can be it is multiple, it is such as, but not limited to, described
The top and bottom of protective layer 11 are nearby respectively provided with different light incidence section domain E1.
Optionally, in some embodiments, the quantity of the light source 18 can be it is multiple, such as, but not limited to, the light source
The lower section in the nontransparent region 110 is arranged in 18 different locations that can correspond to the nontransparent region 110 of the protective layer 11.
Optionally, in some embodiments, the refractive index of the photoconverter 17 is greater than the refractive index of the protective layer 11.It can
With understanding, when detection light beam 101 enters protective layer 11 from light incidence section domain E1, at the interface of photoconverter 17 and light incidence section domain E1
Place reflects, and refraction angle is greater than incidence angle.
Optionally, in some embodiments, the photoconverter 17 has opposite input face and output face, the input face
Light source 18 described in face, nontransparent region 110 described in the output face face, the input face are used to receive the sending of light source 18
Light beam 101 is detected, the output face is used to have to the projection of the lower surface in the nontransparent region 110 of the protective layer 11 scheduled
The detection light beam of incidence angle.
Optionally, the protective layer 11 includes the middle line from its top to its bottom end, and the photoconverter 17 is located at described
It is arranged on the middle line in the nontransparent region of the bottom end vicinity of protective layer 11 or close to the middle line, the photoconverter 17 has width
The rectangular shape of degree and length in 1 millimeter to 50 millimeters range.Or, the photoconverter 17 meets product need with any other
The shape or size asked, such as, but not limited to round, ellipse, round rectangle etc., the size of the photoconverter device 17 can be with
There are different sizes as needed, this is not limited by the present invention.
Optionally, in some embodiments, the light source 18 may further include circuit board 182, and the circuit board 182 is
Flexible circuit board, the circuit board are electrically connected with the luminescence unit 181, and the circuit board 182 can be by glue, two-sided
Glue, sticky object, bolt, bracket, buckle, card slot, welding are fixedly connected with the side 132 of fixed frame 13 and/or bottom 131 or can
Dismantling connection.
Optionally, in some embodiments, the luminescence unit 181 has light-emitting surface and the company of photoconverter 17 described in face
The lower surface of circuit board 182 is connect, the shorter side length of the light-emitting surface of the luminescence unit 181 is no more than 0.5 millimeter.Further
Optionally, the light source 18 may further include circuit board 182, and the shorter side length of the circuit board 182 is no more than 1 milli
Rice.
Optionally, in some embodiments, the quantity of the luminescence unit 181 can be one or more, such as but unlimited
In: 1,2,3,4 or more.
Optionally, the shape of the predeterminable area P1 and/or field of view V1 can be rectangular, round, oval etc., this
It is not construed as limiting in inventive embodiments.Optionally, the field of view V1 is circle, and radius is 2 to 5 millimeters or 3 to 4 millis
Rice or 3 to 5 millimeters.
Optionally, the luminescence unit 181 is to be such as, but not limited to LED (light emitting diode), LD
(laser diode)、VCSEL(vertical cavity surface emitting laser)、Mini-LED、Micro-
LED、OLED(organic light emitting diode)、QLED(quantum dot light emitting diode)
One of or it is a variety of, or including one of LED, LD, VCSEL, Mini-LED, Micro-LED, OLED, QLED or more
The light emitting array of kind composition.
Optionally, in some embodiments, the protective layer 11 includes transparent substrate and optical film layer.The transparent substrate
Including being located at the part in the nontransparent region 110 and positioned at the part of the transparent region 120.The optical film layer face institute
It states non-display area 110 to be located at below the transparent substrate, the optical film layer can be used in transmission detection light beam 301 and intercept
Visible light.The photoconverter 17 can be formed on the lower surface of the optical film layer or the photoconverter 17 can be with
It is integrally formed with the optical film layer.Further alternative, the optical film layer can be omitted.At this point, the protection
The nontransparent region 110 of layer 11 can make by using material is opaque to visible light but.Further alternative, the optical film layer can
To be integrated in the lower surface, upper surface, inside of the substrate.Further alternative, the optical film layer is to the detection light beam
101 transmitance is greater than 50% or 60% or 70%.The optical film layer to the transmitance of visible light less than 10% or 5%,
Or 1%.Further alternative, the optical film layer is such as, but not limited to infrared printing ink.Other are changed in embodiment, described
Optical film layer can have the function of according to the design needs different structures, it is not limited in the embodiment of the present invention.
The optical detection apparatus 1 uses non-collimated detection light beam 101, by directly projecting detection light beam 101 in advance
If the overlapping region of region P1 and field of view V1, and the detection light beam in the non-overlapping region by the predeterminable area P1
101 are transferred to the field of view V1 by total reflection, and by the received down in display module 12 in field of view V1
Irreflexive detection light beam 101 occurs with the ridge contact position of fingerprint, so as to capture the fingerprint for touching the field of view V1
Optical imagery, and then realize screen under fingerprint detection.
It should be noted that although using protective layer 11 as Jie of the detection total reflection transmission of light beam 101 in above-described embodiment
Matter, the embodiment of the present invention do not limit this.In some embodiments, the detection light beam 101 is from the non-of the protective layer 11
The light incidence section domain E1 incidence of the lower surface of display area 110 enters the protective layer 11, and the detection light beam 101 can at least exist
Total reflection transmission is carried out in the protective layer 11.Such as, but not limited to, the display device 10 further includes connecting the protective layer
11 and the display module 12 optical cement, the detection light beam 101 can transmit in 11 inner total reflection of protective layer, or inspection
Surveying light beam 101 can be in the protective layer 11, optical cement inner total reflection transmission or the detection light beam 101
The protective layer 11, the optical cement and at least part of 11 inner total reflection of display module transmission.Further, such as but
It is not limited to, the display module 12 includes positioned at following display units of the lower section of protective layer 11 and below display unit
Back light unit, the detection light beam 101 can be in the protective layer 11, the optical cement and at least part of display units
Inner total reflection transmission.
Therefore, optical detection apparatus 1 of the present invention can by using the detection light beam 101 in the optical detection apparatus
The detection light beam 101 of the ridge contact position of total reflection transmission and field of view V1 and fingerprint in 1 different components and/or medium
Mould group 19 is detected after diffusing reflection and is received and converted to electric signal, to obtain the optical imagery of fingerprint and realize fingerprint detection and knowledge
Not.
Optionally, in some embodiments, the detection mould group 19 can also include processor and memory, the processing
Device can detect the finger print information that light beam 101 obtains user based on the received, such as, but not limited to including ridge valley comparison of light and shade
Fingerprint image.The memory is stored in advance biological information data, the processor can by the finger print information of acquisition and
Pre-stored fingerprint information data is compared, to realize fingerprint detection and identification.By being detected and being known to fingerprint
, optical detection apparatus 5 of the present invention not can be used for locking or unlocking for electronic product, the verifying of on-line payment business, financial system or
The authentication of public security system, the multiple products such as pass authentication of access control system and application scenarios.
It should be noted that abutting/the fitting occurred in the description of description of the invention and claims can indicate
Such as, but not limited to: by lamination be combined together, perhaps tightly close to or close to and have gap or by optics Jie
Matter closely connects.This is not limited by the present invention.
To sum up, optical detection apparatus 1 of the invention can be used as light element at least with protective layer 11, detect light beam
101 can transmit in light element inner total reflection.Light beam 101 be will test to meet described in the angle injection of total reflection transmission conditions
Protective layer 11 simultaneously can be irradiated to predeterminable area P1.The predeterminable area P1 is to detect light beam 101 in the first surface of protective layer
111 irradiation area, for the region of user's finger touching when the field of view V1 is fingerprint detection.The predeterminable area P1 and
Field of view V1 has overlapping region Q1, and being irradiated to the detection light beam 101 of overlapping region Q1, be also equivalent to being capable of direct irradiation
To the ridge of fingerprint.It is irradiated to detection light beam 101 energy of the predeterminable area P1 not with the non-overlapping region overlapped field of view V1
It is enough that the field of view V1 is reached after multiple total reflection transmits.Due to having air between the paddy and field of view V1 of fingerprint
Interval, detection light beam 101 is totally reflected at the opposite position field of view V1 and paddy, and can be all-trans in light element
Penetrate transmission.Due to directly contacting between the ridge and predeterminable area of fingerprint, detection light beam 101 is in the position that field of view V1 and ridge contact
Set place occur diffusing reflection, it is a part of it is irreflexive detection light beam 101 can through the transparent region 120 lower surface after by institute
Detection mould group 19 is stated to receive.The detection light beam 101 is non-collimated light and/or collimated light, and including but not limited to non-collimated is close
Infrared light.The detection mould group 19 receives irreflexive detection light beam 101 and is imaged, due to irreflexive beam characteristics be to
The diverging of space all directions, the detection light beam 101 wherein at least after the diffusing reflection of part is emitted from the lower surface of light element, from institute
State capable of at least partly being received by the detection mould group 19 for the detection light beam 101 of the lower surface outgoing of light element, the inspection
Surveying when light beam 501 enters detection molding 19 can have different incidence angles.
So the following position directly that the detection mould group 19 can be generally disposed at the field of view V1 ready to receive arrives
Irreflexive detection light beam 101.Certainly, the detection mould group 19 can be set in any position of optical detection apparatus 1,
It is the scope of the present invention as long as the detection mould group 19 can receive irreflexive detection light beam 101 at ridge.This
Invention is not construed as limiting this.The detection mould group 19 and the horizontal distance of light source 18 can be less than or equal to the field of view V1
With the horizontal distance of the light source 18.In the present embodiment, the horizontal distance of the detection mould group 19 and the light source 18 is about
10~15 millimeters.Certainly, optionally, in some embodiments, the detection mould group 19 can be arranged adjacent to the light source 18, institute
The horizontal distance for stating detection mould group 19 and the light source 18 can be less than 10 millimeters, 8 millimeters, 5 millimeters.
When the detection mould group 19 is located at below the field of view V1, detection light beam 101 transmits in light element
Path is shorter, and the detection light beam 101 does not need again other regions total reflection transmission of the light element.Therefore, the inspection
It is smaller to survey 101 energy loss of detection light beam that mould group 19 receives.In addition, as described above, it is described detection mould group 19 size or
Small volume, so as to meet the demand for the inside that the electronic products such as mobile phone are arranged in.
Therefore, non-collimated detection light beam 101 is used in optical detection apparatus 1 of the invention and change embodiment, it is described
Non-collimated detection light beam 101 can shine directly into entire predeterminable area P1, to directly reach the detection light of the ridge of fingerprint
Beam 101 has more energy, and the finger print information of entire predeterminable area P1 can be detected.Optical detection of the present invention
Device 1 and its change embodiment have preferable fingerprint detection effect.
Please again simultaneously refering to Fig. 8 and Fig. 9, in a change embodiment of optical detection apparatus 1, optical detection apparatus 1a with
The structure of optical detection apparatus 1 is essentially identical, and to describe direction, element numbers are consistent.Optical detection apparatus 1a and optics
The difference of detection device 1 is: the second surface 112 of photoconverter 17 and the protective layer 11 have airspace, such as but
It is not limited to, frame, which is sticked, between the photoconverter 17 and the second surface 112 sets or the photoconverter 17 and the second table
It is spaced apart between face 112.
In some embodiments, interval can be 0-1 millimeters, 1 between the photoconverter 17 and the second surface 112
Millimeter -1.5 millimeters, 1.5 millimeters -2 millimeters or be greater than 2 millimeters.
Since there is air at interval between photoconverter 17 and second surface 112, by the inspection after 17 deflection angle of photoconverter
It surveys in light beam 101 and at least partly enters protective layer 11 via air refraction, after this part detection light beam 101 enters protective layer 11
It will not be totally reflected.At this point, photoconverter 17 will test light beam 101 to the direction of field of view V1 deflection after, the detection
At least partly enter the protective layer 11 via air in light beam 101, and is emitted from first surface 111.The detection light beam 101
With the predeterminable area P1 of direct irradiation on first surface 111.It detects light beam 101 and is emitted to protective layer 11 from predeterminable area P1
Top.The detection light beam 101 of the outgoing is able to enter inside finger 1000, and the detection light beam 101 is in finger 1000
Portion's transmission, then transmits from the ridge of finger 1000 and paddy respectively.The detection light beam 101 is mainly rolled at valley and a ridge
It penetrates and projects the different detection light beam 101 of light intensity.The detection light beam 101 for being refracted into protective layer 11 from ridge and paddy can be through guarantor
Sheath 11 and display module 12 reach the detection mould group 19.The detection mould group 19 receives the detection light beam 101 and converts
For electric signal, the electric signal can be used in generating the fingerprint image with contrast of corresponding ridge and paddy.It is preset shown in Fig. 8
Region P1 and the setting of the interval field of view V1 and without overlapping, in other or change embodiment, the predeterminable area P1 and visual field
Region V1 may exist overlapping region, the area of the area of the overlapping region no more than the field of view V1 30%,
25%, 20%, 15%, 10%, 5%；Or there is no overlapping but edges closely to set by the predeterminable area P1 and field of view V1
It sets.
The optical detection apparatus 1a uses the detection light beam 101 transmitted from finger 1000 to carry out fingerprint optical imagery, from
And the fingerprint image of the ridge with contrast and paddy is obtained, and then realize fingerprint detection and identification.The optical detection apparatus 1a
The detection light beam 101 transmitted from ridge and paddy is received simultaneously, and optical detection apparatus 1 receives from irreflexive detection at ridge
Light beam 101.Ideally, the image contrast of optical detection apparatus 1 is much better, but the wide usage of optical detection apparatus 1a
(Versatility) better.
Optionally, in some embodiments, detection light beam 101 reflects on 1000 surface of finger, the detection mould group
19 can receive the detection light beam 101 in 1000 surface reflection of finger and for fingerprint imaging.
In conjunction with above-described embodiment, the reception of detection mould group 19 in the embodiment of the present invention can receive external finger 1000 and return
Return detection light beam 101 and be used for fingerprint detection, it is described via finger 1000 return detection light beam 101 include but is not limited to:
Irreflexive detection light beam 101 occurs at the ridge of fingerprint, and/or, into 1000 inside of finger after transmitted by finger 1000
The detection light beam 101 come, and/or, in the detection light beam 101 that 1000 surface of finger is reflected.
It should be noted that the detection mould group 19 receives irreflexive detection light beam 101 at ridge and is used for fingerprint light
It studies picture or the detection mould group 19 receives the detection light beam 101 of the refraction from ridge and paddy and for fingerprint optical imagery.So
And that the present invention is not limited thereto is fixed, the detection mould group 19 can receive other light beams with fingerprint feature information and carry out
Imaging or detection.Such as, but not limited to, the detection mould group 19 can receive from the user's finger surface (ridge including fingerprint
And/or paddy) the detection light beam 101 that directly reflects and for fingerprint detection；Such as, but not limited to, the detection mould group 19 can connect
It receives the visible light and/or black light in the external environment of user's finger reflection and is used for fingerprint detection；Such as, but not limited to, institute
State detection mould group 19 can receive user's finger transmission external environment in visible light and/or black light and for fingerprint examine
It surveys；Such as, but not limited to, the detection mould group 19 can receive the visible light of user's finger transmitting and/or black light and be used for
Fingerprint detection.Further, above-mentioned fingerprint detection is also possible to the detection for other test objects, can by optics at
Image space formula obtains all may be used for the characteristic information of test object.Therefore, although the embodiment of the present invention is to receive irreflexive detection light
It is described for beam 101, other possible light beams for fingerprint optical imagery also belong to the scope of the present invention.
In the application, the optical detection apparatus 1 or 1a can be mobile phone, tablet computer, smartwatch, augmented reality/
Virtual reality device, human action detection device, autonomous driving vehicle, smart home device, security device, Medical Devices, intelligence
Energy robot etc. or above-mentioned component.
In the above embodiment of the present invention or change embodiment and corresponding change setting about light element, display module,
The structure of light source, photoconverter, luminescence unit, light incidence section domain, predeterminable area, field of view etc., position can also be applied at this
In the other embodiments of disclosure of the invention, thus obtains embodiment and its replacement, deformation, combination, fractionation, extension, omission etc. and belong to
In the scope of the present invention.
It should be noted that light-emitting surface, the incidence surface etc. that are likely to occur in present invention description, can be the reality of physical presence
Body surface face, is also possible to imaginary surface, does not influence technical solution of the present invention realization, belongs to the scope of the invention.In addition, of the invention
" overlapping ", " coincidence ", " overlapping " being likely to occur in description, it is thus understood that there is equivalent and can be replaced mutually.
It should be noted that it will be understood by those skilled in the art that without creative efforts, the present invention
Some or all of embodiment, and the deformation for some or all of embodiment, replacement, change, fractionation, combination, extension
Deng being considered as being covered by innovation and creation thought of the invention, belong to the scope of protection of the present invention.
Knot is indicated for any reference of " one embodiment ", " embodiment ", " example embodiment " etc. in the present specification
The a particular feature, structure, or characteristic for closing embodiment description is included at least one embodiment of the invention.In this explanation
This phrase that different location occurs in book might not all refer to identical embodiment.In addition, when combining any embodiment to retouch
When stating specific feature or structure, advocated, realizes this feature or knot in conjunction with the other embodiments of these embodiments
Structure is within the technical scope of those skilled in the art.
" length " that is likely to occur in description of the invention, " width ", "upper", "lower", "left", "right", "front", "rear",
The orientation or positional relationship of the instructions such as " back side ", " front ", "vertical", "horizontal", " top ", " bottom ", " inside ", " outside "
To be based on the orientation or positional relationship shown in the drawings, being merely for convenience of the description embodiment of the present invention and simplifying description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.Similar label and letter indicate similar terms in the accompanying drawings, therefore, once a certain Xiang Yi
It is defined in attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile it being retouched in of the invention
In stating, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.At this
In the description of invention, " a variety of " or the meaning of " plurality " is at least two or two, unless otherwise specifically defined.This hair
In bright description, it is also necessary to which explanation is unless specifically defined or limited otherwise, " setting ", " installation ", " connection " should be done extensively
Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected, or be integrally connected；It can be mechanical connection,
It can be electrical connection；It can be and be directly connected to, be also possible to be indirectly connected with by intermediary, can be inside two elements
Connection.For the ordinary skill in the art, can be understood with concrete condition above-mentioned term in the present invention specifically contain
Justice.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Term used in claims, which should not be construed as to invent, is limited to this explanation
Specific embodiment disclosed in book.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of optical detection apparatus, can actively shine in external object and the return light by receiving external object is real
Existing biological characteristic detection characterized by comprising
Display device, the non-display area with viewing area and around viewing area, the display device include protective layer, position
In the display module of the lower section of protective layer and the fixed frame of the storage protective layer and display module, the protective layer includes first
Surface and second surface, the display module are located at the side that the protective layer deviates from first surface, and the display module can
Through external exit visible light from protective layer to first surface to show image；
Light source, positioned at the side of the second surface, the light source detects light beam to the top transmitting of the first surface of protective layer,
The light source is connected with the bottom of the fixed frame or side；
Photoconverter, in the non-display area between the light source and the first surface of protective layer, the detection light beam passes through
Space between the side and display module of fixed frame is transferred to the photoconverter from light source, the photoconverter for make from
Described in at least partly detection light beam that the light source issues enters after being deflected according to default angle of flare from the second surface
Protective layer, some or all of described detection light beam meet the condition at least in protective layer inner total reflection transmission；
Mould group is detected, positioned at the lower section of the protective layer, the detection mould group receives external object through the protective layer and returns
Detection light beam and be converted to electric signal to obtain the biological information of external object, wherein the detection mould group is described
First surface has field of view, and the direction of detection light beam towards the field of view that the photoconverter issues light source is inclined
Turn.
2. optical detection apparatus as described in claim 1, which is characterized in that the second of the photoconverter and the protective layer
Surface is bonded entirely, and the detection light beam at least partly can define the inspection in at least described protective layer inner total reflection transmission
Surveying light beam and reaching the region of the first surface for the first time is predeterminable area, when predeterminable area does not have finger contact, the visual field
Region exist detection light beam be totally reflected, when field of view has finger contact, it is described detect light beam at least partially in view
The ridge contact position diffusing reflection of field areas and fingerprint, the detection mould group receive irreflexive detection light beam.
3. optical detection apparatus as claimed in claim 2, which is characterized in that the protective layer has nontransparent region and transparent
Region, the nontransparent region are located at around the transparent region；The light source is located at the nontransparent region of the protective layer
Lower section, the photoconverter is between the light source and the nontransparent region of the protective layer, the detection of the light source sending
Light beam enters protective layer from nontransparent region after photoconverter deflection, and can shine directly into positioned at first surface
Predeterminable area, the predeterminable area are at least partially disposed at transparent region.
4. optical detection apparatus as claimed in claim 3, which is characterized in that the predeterminable area and field of view are in the presence of overlapping
Region, the detection light beam for shining directly into overlapping region meet the condition transmitted in protective layer inner total reflection, and the preset areas
Domain not with the field of view overlap non-overlapping region detection light beam at least partly can by total reflection transmission after
Reach the field of view.
5. optical detection apparatus as described in claim 1, which is characterized in that the light source and the photoconverter interval are set
It sets, the size of the spacing distance is 1 millimeter, 2 millimeters, 3 millimeters, 4 millimeters, 5 millimeters.
6. optical detection apparatus as described in claim 1, which is characterized in that the light source includes luminescence unit and circuit board,
The luminescence unit has the light-emitting surface of photoconverter described in face and the lower surface of connection circuit board.
7. optical detection apparatus as claimed in claim 6, which is characterized in that the shorter side length of the light-emitting surface be no more than
0.5 millimeter, and/or, the shorter side length of the circuit board is no more than 1 millimeter.
8. optical detection apparatus as described in claim 1, which is characterized in that the light source includes multiple luminescence units, described
Luminescence unit is the light-emitting component of top emission type or side light emission type, and the luminescence unit has along protective layer lengthwise direction
No more than no more than 10 degree, 20 degree, 30 degree, 40 degree, 50 degree of light emitting anger, the luminescence unit is with along protective layer width axes side
Hair light emitting anger between 40 degree~140 degree.
9. optical detection apparatus as described in claim 1, which is characterized in that the detection mould group is at least partially disposed at described aobvious
Show the lower section of mould group, the detection light beam occurs diffusing reflection in the ridge of fingerprint in the first surface of the protective layer and returns to the guarantor
Sheath inside and the second surface outgoing for being further transmitted through protective layer, the detection mould group can be through at least partly display module
It receives the detection light beam being emitted from the protective layer and is converted to electric signal, the light source and the display module are in the protection
Orthographic projection on the first surface of layer is non-overlapping or partly overlap, and the light source in the plane perpendicular to first surface just
Projection is located at the lower section of the orthographic projection of the display module on this plane.
10. optical detection apparatus as described in claim 1, which is characterized in that the display module includes display unit and back
Light unit, the display unit are located at the lower section of the protective layer, and the back light unit is located at the lower section of the display unit, institute
It states display unit to show for image, the back light unit, which is used to provide image for the display unit, shows required visible light
Backlight beam, it is described detection mould group be located at the back light unit lower section or it is described detect mould group at least part position
It is located at the inside of the display unit or described in the inside of the back light unit or at least part of the detection mould group
At least part of mould group is detected between the back light unit and display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910756853.0A CN110427919A (en) | 2019-08-16 | 2019-08-16 | Optical detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910756853.0A CN110427919A (en) | 2019-08-16 | 2019-08-16 | Optical detection apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN110427919A true CN110427919A (en) | 2019-11-08 |
Family
ID=68414934
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910756853.0A Pending CN110427919A (en) | 2019-08-16 | 2019-08-16 | Optical detection apparatus |
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| CN112816064A (en) * | 2019-11-15 | 2021-05-18 | 北京小米移动软件有限公司 | Optical sensor module and electronic device |
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