CN107977627A - The optical detecting method of the optical detection apparatus of lines, electronic equipment and lines - Google Patents
The optical detecting method of the optical detection apparatus of lines, electronic equipment and lines Download PDFInfo
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- CN107977627A CN107977627A CN201711249050.3A CN201711249050A CN107977627A CN 107977627 A CN107977627 A CN 107977627A CN 201711249050 A CN201711249050 A CN 201711249050A CN 107977627 A CN107977627 A CN 107977627A
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- 238000001514 detection method Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000000605 extraction Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 2
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- 239000000203 mixture Substances 0.000 claims 1
- 239000005357 flat glass Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
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- 239000011521 glass Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
Abstract
The present invention provides the optical detecting method of a kind of optical detection apparatus of lines, electronic equipment and lines.The optical detection apparatus includes transparent cover plate,Light source and photo-sensitive cell,Transparent cover plate has to be connected and opposite first surface and second surface with incidence surface and light-emitting surface,First surface has touch area,Touch area includes at least one touch section being made of first area and second area,Each second area is arranged alternately with each first area,Light source is arranged at the side of transparent cover plate and close to incidence surface,Enter the detection light beam of transparent cover plate for sending,Detection light beam includes the first light beam and the second light beam,First light beam is used to total reflection occur in first area and is projected from light-emitting surface,Second light beam is used to total reflection occur in second area and is projected from light-emitting surface,Photo-sensitive cell is arranged at the opposite side of transparent cover plate and close to light-emitting surface,For receiving the first light beam projected from light-emitting surface and/or the second light beam and converting optical information to lines image information.
Description
Technical field
The present invention relates to detection technique field, in particular to a kind of optical detection apparatus of lines, electronic equipment and
The optical detecting method of lines.
Background technology
With mobile phone technique weed out the old and bring forth the new and the continuous improvement of mobile phone user's demand, in order to reach more preferably user's body
Test, increase mobile phone screen area accounting, screen has become a main trend of intelligent terminal development comprehensively.But for traditional capacitance
Formula fingerprint identification technology, since capacitance detecting can not be penetrated compared with many-sided limitation such as heavy sheet glass, it can not complete to remove Home key
Task.
A kind of optical finger print identifying schemes provided in the prior art are as shown in Figure 1,20 ＇ of light source is carried to 10 ＇ of cover-plate glass
For incident light, it is known that fingerprint diameter is about 8 millimeters, and 10 ＇ thickness of cover-plate glass is about 0.5 millimeter, to make incident light by side
While whole fingerprint can be covered after projecting 10 ＇ upper surfaces of cover-plate glass, then the folder of light and 10 ＇ upper surfaces of cover-plate glass is needed
Angle is especially small (3.5 °~3.6 °), but above-mentioned angle is too small is unfavorable for actual production；And it is limited to the thickness of 10 ＇ of cover-plate glass
Degree, the size of photosensitive array can also become long narrow, and the finger print information obtained from photosensitive array can also produce similar distortion, this
Kind distortion causes the finger print information resolution ratio in transverse direction to reduce, and is unfavorable for finger print information certification.The front and rear finger print information of distortion is such as
Shown in Fig. 2 and 3.
The content of the invention
It is a primary object of the present invention to provide the optics inspection of a kind of optical detection apparatus of lines, electronic equipment and lines
Survey method, to solve in the prior art since obtained finger print information produces distortion and causes the finger print information resolution ratio in transverse direction
The problem of reduction.
To achieve these goals, according to an aspect of the invention, there is provided a kind of optical detection apparatus of lines, bag
Include：Transparent cover plate, has opposite in the first direction incidence surface and light-emitting surface, first direction is perpendicular to the thickness side of transparent cover plate
Also have to, transparent cover plate and be connected with incidence surface and light-emitting surface and opposite first surface and second surface, first surface have
Touch area, touch area include at least one touch section being made of first area and second area, each second area with
Each first area is arranged alternately；Light source, is arranged at the side of transparent cover plate and close to incidence surface, enters transparent cover plate for sending
Detection light beam, detection light beam includes the first light beam and the second light beam, and the first light beam is used to occur to be totally reflected simultaneously in first area
Projected from light-emitting surface, the second light beam is used to total reflection occur in second area and is projected from light-emitting surface；Photo-sensitive cell, is arranged at
The opposite side of bright cover board and close to light-emitting surface, for receiving the first light beam projected from light-emitting surface and/or the second light beam and by light
Learn information and be converted to lines image information.
Further, touch area includes multiple touch sections, and the first light beam and the first light beam are touched at least two
Section occurs total reflection and is projected from light-emitting surface.
Further, the first light beam includes multiple the first parallel light, and the second light beam includes multiple parallel second
Light.
Further, the width of the first light beam is more than or equal to the width of touch area in a first direction, and second
The width of light beam is more than or equal to the width of touch area in a first direction.
Further, optical grains detection device further includes：Lens, are arranged between photo-sensitive cell and light-emitting surface, lens
The first light beam and/or the second light beam for light-emitting surface to be projected are converged in photo-sensitive cell.
Further, light source includes multiple light splitting sources being arranged in order in a second direction, and second direction is hung down with first direction
It is straight and parallel with incidence surface.
Further, the spacing of each light splitting source of arbitrary neighborhood in a second direction is identical.
Further, optical detection apparatus includes the photosensitive battle array being made of the multiple photo-sensitive cells arranged in a second direction
Row, each photo-sensitive cell are corresponded with each light splitting source and set.
Further, the interval of the photo-sensitive cell of arbitrary neighborhood in a second direction is equal.
According to another aspect of the present invention, there is provided a kind of electronic equipment, including display screen and optical detection apparatus, optics
Detection device includes transparent cover plate, and transparent cover plate is arranged on display screen, and optical detection apparatus is above-mentioned optical detection apparatus.
Further, display screen is selected from LCD, LED, OLED and MicroLED.
According to another aspect of the present invention, a kind of optical detecting method of lines is additionally provided, is comprised the following steps：S1,
Lines is formed in the first surface of transparent cover plate, the first surface of transparent cover plate has touch area, and touch area is included at least
One touch section being made of first area and second area, each second area are arranged alternately with each first area；S2 is transparent
Cover board has opposite in the first direction incidence surface and light-emitting surface, and first direction makes bag perpendicular to the thickness direction of transparent cover plate
The detection light beam for including the first light beam and the second light beam enters in transparent cover plate from incidence surface, and the first light beam occurs in first area
It is totally reflected and is projected from light-emitting surface, the second light beam occurs total reflection in second area and projected from light-emitting surface；S3, connects from light-emitting surface
Receive the first light beam and/or the second light beam and convert optical information to lines image information.
Further, in step s 2, the first light beam into transparent cover plate is made to include multiple the first parallel light, and
The second light beam into transparent cover plate is set to include multiple the second parallel light.
Further, in step s 2, the width into the first light beam of transparent cover plate is made to be more than or equal to Petting Area
The width of domain in a first direction, and the width into the second light beam of transparent cover plate is more than or equal to touch area the
Width on one direction.
Apply the technical scheme of the present invention, there is provided a kind of optical detection apparatus, since the first surface of transparent cover plate has
There is at least one touch area, each touch area includes at least one touch section being made of first area and second area,
Each second area is arranged alternately with each first area, and light source can send the first light beam and/or the second light into transparent cover plate
Beam, the first light beam are used to be totally reflected in first area, and the second light beam is used to be totally reflected in second area, passes through division
Lines information, can be divided into multiple odd zones being arranged alternately in a lateral direction by above-mentioned first area and second area
With even number region so that the lines information that the lines information obtained on photosensitive array is spaced multiple odd zones is folded
In addition it is after as a result, or after the lines information superposition in multiple even number regions as a result, then the lines information of counterweight poststack into
Row certification and processing, with the lines information of distortion is authenticated before improving and processing compared with, identification and certification difficulty reduce, and have
Beneficial to real system processing.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is described in further detail.
Brief description of the drawings
The Figure of description for forming the part of the present invention is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows a kind of structure diagram of the optical detection apparatus of the fingerprint provided in the prior art；
Fig. 2 shows the fingerprint image schematic diagram before distortion；
Fig. 3 shows the fingerprint image schematic diagram after the distortion obtained using Fig. 1 optical detection apparatus provided；
Fig. 4 shows the structure diagram of the optical detection apparatus provided according to an embodiment of the present；
Fig. 5 shows the structure diagram for the optical detection apparatus that another embodiment of the present invention provides；And
Fig. 6 shows that the imaging sensor in the embodiment of the present invention 1 obtains after the optical information of the first light beam is changed
The fingerprint image schematic diagram arrived.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, transparent cover plate；20th, light source；210th, it is divided source；30th, lens；40th, photo-sensitive cell；11st, incidence surface；12nd, light extraction
Face；13rd, first surface；130th, touch area；131st, first area；132nd, second area；100th, fingerprint.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.Below with reference to the accompanying drawings and the present invention will be described in detail in conjunction with the embodiments.
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Attached drawing, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work, should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to the embodiment of the present invention described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
As above-mentioned in background technology, in the prior art since obtained finger print information produces distortion and causes in transverse direction
Finger print information resolution ratio reduces.In order to solve above-mentioned technical problem, the present invention proposes a kind of optical detection apparatus of lines,
As shown in figure 4, including：Transparent cover plate 10, has opposite in the first direction incidence surface 11 and light-emitting surface 12, first direction is vertical
In the thickness direction of transparent cover plate 10, transparent cover plate 10 also has to be connected and the first opposite table with incidence surface 11 and light-emitting surface 12
Face 13 and second surface, first surface 13 have touch area 130, and touch area 130 includes at least one by first area 131
The touch section formed with second area 132, each second area 132 are arranged alternately with each first area 131；Light source 20, is set
In the side of transparent cover plate 10 and close to incidence surface 11, the detection light beam of transparent cover plate 10 is entered for sending, detects light beam bag
The first light beam and the second light beam are included, the first light beam is used to occur to be totally reflected and project from light-emitting surface 12, second in first area 131
Light beam is used to occur to be totally reflected and project from light-emitting surface 12 in second area 132；Photo-sensitive cell 40, is arranged at transparent cover plate 10
Opposite side and close light-emitting surface 12, simultaneously believe optics for receiving the first light beam projected from light-emitting surface 12 and/or the second light beam
Breath is converted to lines image information.
Since each touch area 130 includes at least one Petting Area being made of first area 131 and second area 132
Between, each second area 132 is arranged alternately with each first area 131, and light source 20 can send the first light into transparent cover plate 10
Beam and/or the second light beam, the first light beam are used to be totally reflected in first area 131, and the second light beam is used in second area 132
It is totally reflected, by dividing above-mentioned first area 131 and second area 132, lines information can be divided in a lateral direction
Multiple odd zones being arranged alternately and even number region are cut into, so that the lines information obtained on photosensitive array is to be arranged at intervals
Multiple odd zones lines information superposition after as a result, or the knot after the lines information superposition in multiple even number regions
Fruit, then the lines information of counterweight poststack be authenticated and handle, with the lines information of distortion is authenticated and is located before improving
Reason is compared, and identification and certification difficulty reduce, and is conducive to real system processing.
The above-mentioned optical detection apparatus of the present invention can be applied to the detection to a variety of lines, and above-mentioned lines can include referring to
Various lines on the skins such as line.In the above-mentioned optical detection apparatus of the present invention, if the lines on touch area 130 is fingerprint
100, cover-plate glass upper surface a part is contacted with fingerprint valley, and light occurs multiple full transmitting and is pierced by cover-plate glass side and passes through
Lens 30 are focused on photosensitive array, form bright fringes, if cover-plate glass upper surface a part is contacted with fingerprint ridge, due to contact
Face becomes coarse, and diffusing reflection occurs herein for light, it is difficult to and the light that penetrates for reaching photosensitive array is formed, forms dark fringe, so that
The light and shade stripe information that the paddy ridge information of fingerprint can be converted on photosensitive array.
Photo-sensitive cell 40 in above-mentioned optical detection apparatus is that the light information got can be converted to lines image
The random component of information, such as imaging sensor.Transparent cover plate 10 in above-mentioned optical detection apparatus can meet printing opacity to be any
With the plate of changing firmness requirements, such as glass cover-plate, PET cover boards.
Light source 20 in above-mentioned optical detection apparatus is used to send the first light beam and the second light beam into transparent cover plate 10,
The corresponding incidence angle of first light beam and the corresponding incidence angle of the second light beam can be according to lines size and touch area
Depending on the quantity in the touch section included by 130, depending on can be combined with thickness and material of transparent cover plate 10 etc..This area
Technical staff can set the incidence angle of above-mentioned first light beam and the second light beam according to actual conditions, if above-mentioned first light beam and
Second light beam can be respectively by being totally reflected when first area 131 and second area 132.
In order to improve the detection accuracy of optical detection apparatus, in a preferred embodiment, touch area 130 is wrapped
Multiple touch sections are included, the first light beam and the first light beam occur to be totally reflected and penetrate from light-emitting surface 12 at least two touch sections
Go out；It is further preferable that the first light beam and the first light beam occur to be totally reflected and project from light-emitting surface 12 in each touch section.Such as figure
Shown in 4, the first surface 13 of the transparent cover plate 10 has the touch area 130 for including multiple touch sections, what light source 20 was sent
First light beam can be totally reflected at the first area 131 in by each touch section, the second light that light source 20 is sent
Beam can be totally reflected in the second area 132 in by each touch section.
In order to further obtain whole lines information of touch area 130, so that the image information obtained is more accurate
Preferably it coincide really and with lines, above-mentioned first light beam includes multiple the first parallel light, and above-mentioned second light beam is including more
A the second parallel light；And, it is preferable that the width of above-mentioned first light beam is more than or equal to touch area 130 first
Width on direction, and the width of above-mentioned second light beam is more than or equal to the width of touch area 130 in a first direction.
In the above-mentioned optical detection apparatus of the present invention, optical grains detection device can also include lens 30, lens 30
It is arranged between photo-sensitive cell 40 and light-emitting surface 12, lens 30 are used for the first light beam and/or the second light for projecting light-emitting surface 12
Beam is converged in photo-sensitive cell 40.Said lens 30 are used for the first light beam and/or the second light beam for projecting above-mentioned light-emitting surface 12
Converge in above-mentioned photo-sensitive cell 40, so enable to all converge to photo-sensitive cell 40 from the light that light-emitting surface 12 is emitted
In, so as to obtain image information more accurate for the conversion of photo-sensitive cell 40, so as to further increase the optical detection apparatus
Detection accuracy.
In the above-mentioned optical detection apparatus of the present invention, it is preferable that above-mentioned light source 20 include it is multiple in a second direction successively
The light splitting source 210 of arrangement, above-mentioned second direction is vertical with above-mentioned first direction and parallel with above-mentioned incidence surface 11, as shown in Figure 5.
Multiple light splitting sources 210 correspond to and send multiple first light beams and multiple second light beams, and the incidence angle of each first light beam can be identical
Or it is different, the incidence angle of each second light beam can be identical or different, these light splitting sources 210
The first light beam and the second light beam sent is totally reflected in the different touch areas 130 of transparent cover plate 10 so that this is saturating
More touch areas 130 can be set on bright cover board 10, and then realize the detection of the overlapped information of more lines.
In order to improve the accuracy detected to lines on each touch area 130, it is preferable that above-mentioned each light splitting of arbitrary neighborhood
The spacing of source 210 in a second direction is identical, as shown in Figure 5.
In order to which the emergent ray that the light for sending different light splitting sources 210 obtains after total reflection is converted into lines figure
As information, it is preferable that optical detection apparatus includes the photosensitive array being made of the multiple photo-sensitive cells 40 arranged in a second direction,
Each photo-sensitive cell 40 is corresponded with each light splitting source 210 and set, as shown in Figure 5.This one-to-one set-up mode is not only
One-to-one corresponding on index mesh, also refers to the one-to-one corresponding on the position of the two at the same time, i.e., the light warp that a light splitting source 210 is sent
Crossing after total reflection obtained emergent ray can enter in corresponding photo-sensitive cell 40.
In order to improve the accuracy detected to lines on each touch area 130, it is preferable that the above-mentioned photosensitive member of arbitrary neighborhood
The interval of part 40 in a second direction is equal.
In the above-mentioned optical detection apparatus of the present invention, source 210 and photo-sensitive cell 40 are divided quantitatively not necessarily
Correspondingly, other quantity correspondences be can also be, such as two light splitting sources 210 correspond to a photo-sensitive cell 40, this
Field technology personnel according to the actual requirements can be adjusted the quantity and position in light splitting source 210 and photo-sensitive cell 40.
According to another aspect of the present invention, a kind of electronic equipment, including display screen and optical detection apparatus, light are additionally provided
Learning detection device includes transparent cover plate 10, and transparent cover plate 10 is arranged on display screen, which is above-mentioned optics
Detection device.Optical detection apparatus of the above-mentioned electronic equipment due to including above-mentioned fingerprint so that its fingerprint recognition it is accurate
Property higher, and then can better ensure that the safety of the electronic equipment.
In the above-mentioned electronic equipment of the present invention, display screen can be selected from LCD, LED, OLED and MicroLED, this area
Technical staff carries out Rational choice to the species of display screen according to the actual requirements.
In accordance with a further aspect of the present invention, a kind of optical detecting method of lines is additionally provided, is comprised the following steps：S1,
Lines is formed in the first surface of transparent cover plate, the first surface of transparent cover plate has touch area, and touch area is included at least
One touch section being made of first area and second area, each second area are arranged alternately with each first area；S2 is transparent
Cover board has opposite in the first direction incidence surface and light-emitting surface, and first direction makes bag perpendicular to the thickness direction of transparent cover plate
The detection light beam for including the first light beam and the second light beam enters in transparent cover plate from incidence surface, and the first light beam occurs in first area
It is totally reflected and is projected from light-emitting surface, the second light beam occurs total reflection in second area and projected from light-emitting surface；S3, connects from light-emitting surface
Receive the first light beam and/or the second light beam and convert optical information to lines image information.
, can be by lines by dividing above-mentioned first area and second area in the above-mentioned optical detecting method of the present invention
Information is divided into multiple odd zones being arranged alternately and even number region in a lateral direction, then by adjusting the first light beam and
Second light beam enters angle during transparent cover plate, makes the first light beam that total reflection occur in first area and projected from light-emitting surface, the
Two light beams occur total reflection in second area and are projected from light-emitting surface, so as to be made by receiving the first light beam and/or the second light beam
Obtained lines information is as a result, or multiple even number regions after the lines information superposition of spaced multiple odd zones
Lines information superposition after as a result, then the lines information of counterweight poststack is authenticated and handles, with improve before to distortion
Lines information be authenticated comparing with processing, identification and certification difficulty reduce, be conducive to real system processing.
In above-mentioned steps S2, in order to further obtain whole lines information of touch area, so that the figure obtained
As information is more accurate and preferably coincide with lines, it is preferable that the first light beam made into transparent cover plate includes multiple parallel
The first light, and the second light beam into transparent cover plate is included multiple the second parallel light.And, it is preferable that make into
The width for entering the first light beam of transparent cover plate is more than or equal to the width of touch area in a first direction, and makes to enter transparent
The width of second light beam of cover board is more than or equal to the width of touch area in a first direction.
The optical detection apparatus of lines provided by the invention is further illustrated below in conjunction with embodiment.
Embodiment 1
Optical detection apparatus provided in this embodiment is as shown in figure 4, including transparent cover plate 10, light source 20, lens 30 and sense
Optical element 40, specific position relationship is as shown in Figure 1, transparent cover plate 10 is glass cover-plate, and the length of the transparent cover plate 10 (is schemed
Width of the transparent cover plate 10 on the side perpendicular to paper or display screen inwards in 1) 160mm, width (transparent cover plate 10 in Fig. 1
The width on side in the horizontal direction) it is 56mm, thickness 0.5mm, and its refractive index is 1.5.On the surface of the transparent cover plate 10
With touch area 130, there is fingerprint 100, the length of touch area 130 is 8mm, width 8mm, is touched on touch area 130
The distance for touching the side of the centre distance transparent cover plate 10 in region 130 is 4mm, and touch area 130 includes two by first area 131
The touch section formed with second area 132, first area 131 and second area 132 replace, each first area 131 and second
The length in region 132 is 2mm, and width is 8mm.
Detection process using above-mentioned optical detection apparatus includes：
Assuming that the refractive index of cover-plate glass is 1.5, the first light beam that light source 20 is sent is in the incidence angle of incidence surface 11
48.6 °, the second light beam that light source 20 is sent is 138.6 ° in the incidence angle of incidence surface 11, by finger touch region 130, the firstth area
Fingerprint is divided into alternate strange region and even region by domain 131 and second area 132；
First light beam is by can be totally reflected and be incident to by light-emitting surface 12 during above-mentioned each first area 131
In lens 30, enter by the converging action of lens 30 in imaging sensor, imaging sensor corresponds to light in the first light beam
Optical information be converted into image information, finally obtain the superimposed image in strange region in fingerprint image；
Similarly, the second light beam during above-mentioned each second area 132 by can be totally reflected and pass through light-emitting surface
12 are incident in lens 30, enter by the converging action of lens 30 in imaging sensor, imaging sensor is by the second light beam
The corresponding optical information of light is converted into image information, finally obtains the superimposed image in even region in fingerprint image.
Fingerprint image schematic diagram such as Fig. 6 institutes that above-mentioned imaging sensor obtains after the optical information of the first light beam is changed
Show.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Since each touch area includes at least one touch section being made of first area and second area, each secondth area
Domain is arranged alternately with each first area, and light source can send the first light beam and/or the second light beam into transparent cover plate, the first light
Beam is used to be totally reflected in first area, and the second light beam is used to be totally reflected in second area, by dividing above-mentioned first
Lines information, can be divided into multiple odd zones and even section being arranged alternately in a lateral direction by region and second area
Domain, so that after the lines information obtained on photosensitive array is the lines information superposition of spaced multiple odd zones
As a result, or after the lines information superposition in multiple even number regions as a result, then the lines information of counterweight poststack be authenticated and
Processing, with the lines information of distortion is authenticated before improving and processing compared with, identification and certification difficulty reduce, and are conducive to reality
System processing.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (14)
- A kind of 1. optical detection apparatus of lines, it is characterised in that including：Transparent cover plate (10), it is vertical with incidence surface (11) and light-emitting surface (12), the first direction opposite in the first direction Thickness direction in the transparent cover plate (10), the transparent cover plate (10) also have and the incidence surface (11) and the light extraction Face (12) connects and opposite first surface (13) and second surface, the first surface (13) have touch area (130), institute Stating touch area (130) includes at least one touch section being made of first area (131) and second area (132), each institute Second area (132) is stated to be arranged alternately with each first area (131)；Light source (20), is arranged at the side of the transparent cover plate (10) and close to the incidence surface (11), enters institute for sending The detection light beam of transparent cover plate (10) is stated, the detection light beam includes the first light beam and the second light beam, and first light beam is used for Total reflection occurs in the first area (131) and is projected from the light-emitting surface (12), second light beam is used for described the Two regions (132) occur total reflection and are projected from the light-emitting surface (12)；Photo-sensitive cell (40), is arranged at the opposite side of the transparent cover plate (10) and close to the light-emitting surface (12), for receiving From first light beam of the light-emitting surface (12) injection and/or second light beam and convert optical information to lines image Information.
- 2. optical detection apparatus according to claim 1, it is characterised in that the touch area (130) includes multiple touch Touch section, first light beam and first light beam at least two it is described touch sections occur total reflection and from it is described go out Smooth surface (12) projects.
- 3. optical detection apparatus according to claim 1, it is characterised in that first light beam includes multiple parallel the One light, and second light beam includes multiple the second parallel light.
- 4. optical detection apparatus according to claim 1, it is characterised in that the width of first light beam is more than or waits In the width of the touch area (130) in said first direction, and the width of second light beam is more than or equal to institute State the width of touch area (130) in said first direction.
- 5. optical detection apparatus according to claim 1, it is characterised in that the optical grains detection device further includes：Lens (30), are arranged between the photo-sensitive cell (40) and the light-emitting surface (12), and the lens (30) are used for institute First light beam and/or second light beam for stating light-emitting surface (12) injection are converged in the photo-sensitive cell (40).
- 6. optical detection apparatus according to any one of claim 1 to 5, it is characterised in that the light source (20) includes Multiple light splitting sources (210) being arranged in order in a second direction, the second direction it is vertical with the first direction and with it is described enter Smooth surface (11) is parallel.
- 7. optical detection apparatus according to claim 6, it is characterised in that each light splitting source (210) of arbitrary neighborhood Spacing in this second direction is identical.
- 8. optical detection apparatus according to claim 6, it is characterised in that the optical detection apparatus is included by along described The photosensitive array of the multiple photo-sensitive cells (40) compositions of second direction arrangement, each photo-sensitive cell (40) with each described point Light source (210), which corresponds, to be set.
- 9. optical detection apparatus according to claim 8, it is characterised in that the photo-sensitive cell (40) of arbitrary neighborhood exists Interval in the second direction is equal.
- 10. a kind of electronic equipment, including display screen and optical detection apparatus, the optical detection apparatus includes transparent cover plate (10), the transparent cover plate (10) is arranged on the display screen, it is characterised in that the optical detection apparatus is claim Optical detection apparatus any one of 1 to 9.
- 11. electronic equipment according to claim 10, it is characterised in that the display screen be selected from LCD, LED, OLED and MicroLED。
- 12. a kind of optical detecting method of lines, it is characterised in that comprise the following steps：S1, forms the lines, the first surface of the transparent cover plate has Petting Area in the first surface of the transparent cover plate Domain, the touch area include at least one touch section being made of first area and second area, each second area It is arranged alternately with each first area；S2, transparent cover plate have opposite in the first direction incidence surface and light-emitting surface, and the first direction is perpendicular to described transparent The thickness direction of cover board, the detection light beam for making to include the first light beam and the second light beam enter the transparent cover plate from the incidence surface In, and total reflection occurs in the first area and is projected from the light-emitting surface for first light beam, second light beam is in institute Second area is stated total reflection occurs and projects from the light-emitting surface；S3, receives first light beam and/or second light beam from the light-emitting surface and converts optical information to lines figure As information.
- 13. optical detecting method according to claim 12, in the step S2, makes the institute into the transparent cover plate Stating the first light beam includes multiple the first parallel light, and it is multiple flat to include second light beam into the transparent cover plate The second capable light.
- 14. optical detecting method according to claim 12, it is characterised in that in the step S2, make to enter described The width of first light beam of transparent cover plate is more than or equal to the width of the touch area in said first direction, and The width made into second light beam of the transparent cover plate is more than or equal to the touch area in the first direction On width.
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