CN103968303B - Light-emitting device and image sensor - Google Patents
Light-emitting device and image sensor Download PDFInfo
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- CN103968303B CN103968303B CN201410180187.8A CN201410180187A CN103968303B CN 103968303 B CN103968303 B CN 103968303B CN 201410180187 A CN201410180187 A CN 201410180187A CN 103968303 B CN103968303 B CN 103968303B
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Abstract
The invention provides a light-emitting device and an image sensor. The light-emitting device comprises a light-emitting body, a light-guiding body, an outer shading shell and a light reflecting structure. The light-emitting body is provided with an arc-shaped light-guiding face and arranged on the light-guiding body. The light-guiding body is arranged in the outer shading shell, and the outer shading shell is provided with a light outlet opening. The light reflecting structure is arranged on one side, opposite to the light outlet opening of the outer shading shell, of the light-guiding body in the length direction of the light-guiding body. When the light-emitting device is used, the light-emitting body is used for providing a light source, light passes through the light-guiding body and then is reflected by the light-reflecting structure, and the light which is changed in propagation direction is emitted from the light outlet opening of the outer shading shell. Due to the fact that the light-guiding body is provided with the arc-shaped light-guiding face, the light reflecting structure is matched with the arc-shaped light-guiding face to make the light emitted from the light outlet opening be good in directionality. In this way, the effective utilization rate of the light is increased, and working reliability of the light-emitting device is guaranteed. Meanwhile, the light-emitting device has the advantages of being simple in structure and low in manufacturing cost.
Description
Technical field
The present invention relates to image sensing apparatus technical field, more particularly, to a kind of light-emitting device and imageing sensor.
Background technology
With the continuous development of anti-counterfeiting technology, optical disclour printing ink and latent image identification obtain extensively in anti-counterfeit field
Application.Optical disclour printing ink can be different with the incident angle of extraneous light with latent image identification, and assume different face
Color or pattern.Therefore, the anti-fake mark in order to identify optical disclour printing ink and latent image is made, needs sending out of imageing sensor
Electro-optical device has the exit direction of multi-angle.
The big problem of the light-emitting device generally existing angle of divergence in imageing sensor of the prior art, thus lead to light
Directivity is poor, the effective rate of utilization of light is low.
Content of the invention
The present invention is intended to provide a kind of light-emitting device and imageing sensor, to solve the finger of light-emitting device light in prior art
The problem that tropism is poor, the effective rate of utilization of light is low.
For solving above-mentioned technical problem, according to an aspect of the invention, it is provided a kind of light-emitting device, comprising: luminous
Body；Light conductor, light conductor has arc light guiding surface, and luminous body is arranged on light conductor；Shading shell, light conductor is arranged on shading
Inside the shell, and shading shell has light opening；Reflective structure, reflective structure is arranged on light conductor along the length direction of light conductor
With shading shell go out the side that light opening is oppositely arranged.
Further, the opening angle scope going out light opening is less than 90 degree.
Further, reflective structure is reflecting pattern.
Further, reflective structure is multiple, and multiple reflective structures are along the circumferentially-spaced spread configuration of light conductor.
Further, light-emitting device also includes condensing body, and condensing body is arranged on the going out at light opening of shading shell.
Further, the side away from light conductor of condensing body has optically focused lobe.
Further, optically focused lobe is multiple, and multiple optically focused lobe are along the circumferentially-spaced spread configuration of light conductor.
Further, light conductor is cylinder.
According to another aspect of the present invention, there is provided a kind of imageing sensor, including light-emitting device and light-passing board, light
Device is located at the side of light-passing board, and light-emitting device is above-mentioned light-emitting device.
Further, light-passing board includes: plate body；Refractive body, refractive body is arranged on plate body.
Light conductor in the present invention has arc light guiding surface, and luminous body is arranged on light conductor, and light conductor is arranged on shading
Inside the shell, and shading shell has light opening, reflective structure along light conductor length direction be arranged on light conductor and shading
Shell go out the side that light opening is oppositely arranged.During using light-emitting device in the present invention, luminous body is used for providing light source, light warp
Cross light conductor to be reflected by reflective structure, the light changing the direction of propagation projects via the light opening that goes out of shading shell.Due to light conductor
There is arc light guiding surface, thus reflective structure and arc light guiding surface coordinate, so that having directivity by the light going out the injection of light opening
Good feature, thus improve the effective rate of utilization of light, ensure that the functional reliability of light-emitting device.Meanwhile, in the present invention
Light-emitting device has the characteristics that structure is simple, low cost of manufacture.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the structural representation of light-emitting device in one of present invention preferred embodiment；
The structural representation of light-emitting device in another preferred embodiment that Fig. 2 diagrammatically illustrates in the present invention；
The structural representation of light-emitting device in another preferred embodiment that Fig. 3 diagrammatically illustrates in the present invention；
The structural representation of light-emitting device in another preferred embodiment that Fig. 4 diagrammatically illustrates in the present invention；
Fig. 5 diagrammatically illustrates the structural representation of imageing sensor in one of present invention preferred embodiment；
The structural representation of imageing sensor in another preferred embodiment that Fig. 6 diagrammatically illustrates in the present invention；
The structural representation of imageing sensor in another preferred embodiment that Fig. 7 diagrammatically illustrates in the present invention；
The structural representation of imageing sensor in another preferred embodiment that Fig. 8 diagrammatically illustrates in the present invention；
The structural representation of imageing sensor in another preferred embodiment that Fig. 9 diagrammatically illustrates in the present invention；
Figure 10 diagrammatically illustrates the structural representation of light-passing board in one of present invention preferred embodiment；
The structural representation of light-passing board in another preferred embodiment that Figure 11 diagrammatically illustrates in the present invention；
The structural representation of light-passing board in another preferred embodiment that Figure 12 diagrammatically illustrates in the present invention；
Figure 13 diagrammatically illustrates the structural representation of reflective structure in one of present invention preferred embodiment；
Figure 14 diagrammatically illustrates the right view of Figure 13；
The structural representation of reflective structure in another preferred embodiment that Figure 15 diagrammatically illustrates in the present invention；
Figure 16 diagrammatically illustrates the right view of Figure 15；
The structural representation of reflective structure in another preferred embodiment that Figure 17 diagrammatically illustrates in the present invention；
The structural representation of reflective structure in another preferred embodiment that Figure 18 diagrammatically illustrates in the present invention.
In figure reference: 10, plate body；11st, the first plate body；11a, the first connecting end surface；11b, the 3rd connecting end surface；
11c, groove；12nd, the second plate body；12a, the second connecting end surface；13rd, the 3rd plate body；13a, the 4th connecting end surface；20th, refractive body；
30th, light-emitting device；40th, light-passing board；50th, substrate；60th, photographic department；61st, the first photographic department；62nd, the second photographic department；70th, install
Box；80th, lens；81st, the first lens；82nd, the second lens；90th, counnter attack film；100th, light conductor；200th, shading shell；210th, go out light
Opening；300th, reflective structure；400th, condensing body；410th, optically focused lobe.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims
Implement with the multitude of different ways covering.
As the first aspect of the invention, there is provided a kind of light-emitting device.As shown in Figures 1 to 9, light-emitting device 30 wraps
Include luminous body, light conductor 100, shading shell 200 and reflective structure 300, light conductor 100 has arc light guiding surface, and luminous body sets
Put on light conductor 100；Light conductor 100 is arranged in shading shell 200, and shading shell 200 has light opening 210；Instead
Photo structure 300 along light conductor 100 length direction be arranged on light conductor 100 with shading shell 200 to go out light opening 210 relative
The side of setting.During using light-emitting device 30 in the present invention, luminous body is used for providing light source, and light is anti-through light conductor 100
Photo structure 300 reflects, and the light changing the direction of propagation projects via the light opening 210 that goes out of shading shell 200.Due to light conductor 100
There is arc light guiding surface, thus reflective structure 300 and the cooperation of arc light guiding surface, so that being had by going out the light that light opening 210 projects
The good feature of directivity, thus improve the effective rate of utilization of light, ensure that the functional reliability of light-emitting device.
In embodiment as shown in Figures 1 to 4, reflective structure 300 can also be arranged on shading shell 200.
Preferably, light conductor 100 is cylinder.Because light conductor 100 is cylinder, so that reflective structure 300 is anti-
The light penetrated can be gone out by cylinder circular section emission center, thus ensure that the directivity of emergent ray, and then ensure that luminous
The luminous reliability of device.
Preferably, luminous body is LED lamp.Have that energy consumption is little due to LED lamp, long service life, brightness are strong, job stability
Good feature, hereby it is ensured that the luminous reliability of light-emitting device.
Preferably, luminous body is arranged on the two ends of light conductor 100.Because two ends are provided with luminous body, thus improve and send out
The luminous intensity of electro-optical device, thus ensure that the dependability of imageing sensor.
Preferably, luminous body has red, green, blue and red four kinds of colors.One end of light conductor 100 can arrange four colors not
Same luminous body.In one preferred embodiment, the two ends of light conductor 100 are provided with luminous body, totally 8.
Preferably, the opening angle scope going out light opening 210 is less than 90 degree.Due to going out the opening angle model of light opening 210
Enclose less than 90 degree, thus make emergent ray have the characteristics that the property gathered is good, directivity is good, thus ensure that the light intensity of emergent light,
Ensure that the dependability of imageing sensor.Preferably, the opening angle scope going out light opening 210 is less than 30 degree.
Reflective structure 300 in the present invention is reflecting pattern.Staff can need to design reflective structure according to using
300 position and width.
Preferably, reflective structure 300 is multiple, and multiple reflective structures 300 set along the circumferentially-spaced arrangement of light conductor 100
Put.By changing position and the width of reflective structure 300, thus it is possible to vary the reflection path of light, thus improve reflective structure 300
Functional reliability.Multiple reflective structures 300 can correspond to multiple directivity rising angles.In embodiment as shown in Figure 2, by
It is two in reflective structure 300, this light-emitting device has the rising angle of two directivitys.
As shown in Figure 13 and Figure 14, reflective structure 300 is reflecting pattern, and reflecting pattern is linear.Preferably, reflective figure
The width of shape is 1 millimeter.
As shown in Figure 15 and Figure 16, reflective structure 300 is reflecting pattern, and reflecting pattern is linear, and is provided with two
Reflecting pattern.Because reflecting pattern is two being set up in parallel, so that light-emitting device 30 has the outgoing of two directivitys
Light.
As shown in figure 17, reflective structure 300 is reflecting pattern, and reflecting pattern is multiple reflective spots, and multiple reflective spots edges are led
The length direction of body of light 100 is spaced setting along a straight line, and the distance between two neighboring reflective spot is along light conductor 100
Two ends are gradually reduced to the center position of light conductor 100.This is the dough softening according to optical transmission direction, and the spacing of setting gradually adds
Close reflecting pattern.
As shown in figure 18, reflective structure 300 is reflecting pattern, and reflecting pattern is multiple reflective spots, and multiple reflective spots edges are led
The length direction of body of light 100 is spaced setting along a straight line, and along light conductor 100 center side from two ends to light conductor 100
Length to single reflective spot is gradually increased.This is the dough softening according to optical transmission direction, and it is anti-that the length of setting gradually lengthens
Light figure.Light-emitting device 30 in the present invention also includes condensing body 400, and the light that goes out that condensing body 400 is arranged on shading shell 200 is opened
At mouth 210.Due to being provided with condensing body 400, thus make more to be gathered by going out the light that light opening 210 projects, further enhance
The effective rate of utilization of the directivity of light and light.It is, of course, also possible to by controlling the width of reflective structure 300 and going out light opening
210 size realizes the effect of optically focused.
In embodiment as shown in Figure 3 and Figure 4, the side away from light conductor 100 of condensing body 400 has optically focused lobe
410.Emergent ray passes through the optically focused lobe 410 of condensing body 400 through going out light opening 210, and emergent light converges subsequently pointing to property to be strengthened,
Thus further increasing the dependability of light-emitting device.
In embodiment as shown in Figure 4, optically focused lobe 410 is multiple, and multiple optically focused lobe 410 are along light conductor 100
Circumferentially-spaced spread configuration.Due to being provided with multiple optically focused lobe 410, thus light is via different optically focused lobe
After 410 outgoing, there are different sensings, so that light-emitting device can provide the light of multiple directivitys in the present invention, can
Meet different use requirements, and solve the problems, such as light intensity attenuation.
Preferably, light-emitting device 30 refers to tropism light-emitting device.Because light-emitting device 30 refers to tropism light-emitting device, thus
Improve the effective rate of utilization of light, make the structure of imageing sensor compacter.
Preferably, light-emitting device 30 is the optical fiberss with luminous body and reflective structure 300.Because optical fiberss utilize
Total reflection principle can achieve there is low, light the lossless propagation of loss, has the characteristics that loss is low, and fidelity is high, the angle of divergence is little, work
Make the high feature of reliability, hereby it is ensured that the light beam that luminous body sends is through fibre-optic propagation, and anti-by reflecting pattern
After light, emergent light can be made to have the characteristics that utilization ratio is high and directivity is good, thus ensure that light-emitting device 30 and image pass
The functional reliability of sensor.
As the second aspect of the invention, there is provided a kind of imageing sensor.As shown in Fig. 5 to Figure 12, image sensing
Device includes light-emitting device 30 and light-passing board 40, and light-emitting device 30 is located at the side of light-passing board 40, and light-emitting device 30 is above-mentioned sending out
Electro-optical device 30.Because the light-emitting device 30 in the present invention has, directivity is good, thus improve the effective rate of utilization of light,
Ensure that the dependability of imageing sensor.Meanwhile, the imageing sensor in the present invention also has that structure is simple, manufacturing cost
Low feature.
As shown in Figure 10 to Figure 12, light-passing board includes plate body 10 and refractive body 20, and refractive body 20 is arranged on plate body 10.By
Light-passing board 40 in the present invention has refractive body 20, thus when applying this light-passing board 40 in the image sensor, can be effective
Shorten the propagation path of light, so that imageing sensor has while ensureing recognition effect, and small product size is little, area occupied
Feature that is little, being easy to carry and carry, and then improve the dependability of imageing sensor.Meanwhile, the printing opacity in the present invention
Plate 40 also has the characteristics that structure is simple, low cost of manufacture.
In embodiment as shown in Figure 9, refractive body 20 is located on plate body 10, and a part for refractive body 20 is by plate body 10
Second surface stretch out setting.Because refractive body 20 is located on plate body 10, thus the light transmitted through plate body 10 passes through refractive body
The propagation path of this light beam after 20, can be changed, so that the function that light-passing board 40 not only has printing opacity also has change light path
Effect.
Preferably, refractive body 20 is reflective membrane, reflecting layer, optical fiber or optical light guiding plate.Further, optical light guiding plate
It is optics leaded light pc plate.Due to optical fiber have pliable, thus staff can by external force make fibre-optical bending become
Required angle, thus changing the refractive power path of refractive body 20, and then ensure that the functional reliability of light-passing board 40.Optical fiber and optics
The material that guide-lighting pc plate is used has the characteristics that the refractive index of material from inside to outside is gradually increased, make light inside it from interior toward
During outer propagation, angle is increasing, to interface surfaces portion angle of incidence greatly to being totally reflected, no matter and it is curved
Bent one-tenth is arbitrarily angled, does not affect the characteristic that light is transmitted wherein.
Refractive body 20 in the present invention is arranged on first surface and the second table that the through-thickness of plate body 10 is oppositely arranged
Between face.Between the first surface being oppositely arranged due to the through-thickness that refractive body 20 is arranged on plate body 10 and second surface,
Thus the light that whether first surface or second surface pass through is all possibly through refractive body 20, thus changing the propagation road of light
Footpath.
In embodiment as shown in Figure 10 to Figure 12, refractive body 20 has dioptric layer, the first table of dioptric layer and plate body 10
There is between face the first angle a.Due to there is the first angle a between the dioptric layer of refractive body 20 and the first surface of plate body 10,
Thus can be changed after propagation path by the light that first surface or second surface pass through and be projected by first surface or second surface again,
Thus ensure that the functional reliability of refractive body 20.Preferably, the first angle a is 45 degree to 65.
Preferably, dioptric layer is reflective membrane or reflecting layer.
In embodiment as shown in figs. 8 and 12, refractive body 20 is two, the both sides one of two refractive bodies 20 and plate body 10
One is correspondingly arranged.Due to being provided with two refractive bodies 20, thus can be through two refractive powers via the light that light-emitting device 30 projects
Body 20, thus making the angle of c2 less by changing the propagation path of light twice, and then is ensureing that imageing sensor volume is less
More preferable recognition effect is realized, recognition effect is more compared with the imageing sensor of the prior art of same volume on the premise of change
Excellent.
Plate body 10 in the present invention includes the first plate body 11 and the second plate body 12, and the first plate body 11 has being obliquely installed
One connecting end surface 11a, the first plate body 11 is lamella lucida；Second plate body 12 has the first connecting end surface 11a with the first plate body 11
The second connecting end surface 12a being equipped with, refractive body 20 is arranged between the first connecting end surface 11a and the second connecting end surface 12a
(refer to Figure 10 to Figure 12).Because the first plate body 11 is lamella lucida, hereby it is ensured that the printing opacity reliability of light-passing board 40, thus
Ensure that the reliability of Image Acquisition.Preferably, the first plate body 11 is glass or plastics are made.Due to the first connecting end surface
11a and the second connecting end surface 12a tilt cooperation and refractive body 20 is disposed there between, hereby it is ensured that refractive body 20 and plate
The first angle between the first surface of body 10, thus ensure that the functional reliability of refractive body 20.
In embodiment as shown in Figure 10 to Figure 12, refractive body 20 is to be coated in the first connecting end surface 11a or second connection
Reflective membrane on end face 12a.
Preferably, the second plate body 12 is that plastics are made.Because plastic has the spy of easy processing, long service life
Point, hereby it is ensured that the dependability of light-passing board 40, ensure that the first plate body 11 passes through the second plate body 12 and mounting box simultaneously
70 assembly reliability.
Preferably, the first plate body 11 and the second plate body 12 are integrally formed.Further, the first plate body 11 and the second plate body 12
By injection mo(u)lding.Certainly, the first plate body 11 and the second plate body 12 can also be fixed by way of bonding.
In embodiment as is illustrated by figs. 11 and 12, the first plate body 11 is also had and is oppositely arranged with the first connecting end surface 11a
The 3rd connecting end surface 11b, plate body 10 also includes the 3rd plate body 13, and the 3rd plate body 13 has and is connected with the 3rd of the first plate body 11
4th connecting end surface 13a of end face 11b cooperation.Because the two ends of the first plate body 11 are respectively arranged with the second plate body 12 and the 3rd plate
Body 13, hereby it is ensured that the assembly reliability of light-passing board 40 and mounting box 70, thus ensure that imageing sensor using reliable
Property.
In embodiment as shown in figure 12, the 3rd connecting end surface 11b of the first plate body 11 is obliquely installed, and the first connection end
The distance between face 11a and the 3rd connecting end surface 11b is gradually increased along the thickness direction of plate body 10.Preferably, refractive body 20 is
Two, a refractive body 20 is arranged between the first connecting end surface 11a and the second connecting end surface 12a, and another refractive body 20 sets
Put between the 3rd connecting end surface 11b and the 4th connecting end surface 13a.Due to the first connecting end surface 11a and the 3rd connecting end surface 11b
The distance between be gradually increased along the thickness direction of plate body 10, thus the dioptric layer of two refractive bodies 20 is oppositely arranged, thus protecting
Demonstrate,prove two refractive bodies 20 and same light beam can have been changed propagation path twice, and then ensure that the refractive power reliability of light-passing board 40
Property.
Preferably, the first surface of the first plate body 11 has groove 11c (refer to Fig. 6).Further, groove 11c
Trough wall surface is inclined-plane, and the trough wall surface of groove 11c is vertical with incident illumination.Because the first plate body 11 has groove 11c, thus effectively
Reflected light is avoided to strengthen, thus ensure that the functional reliability of light-passing board 40.
Preferably, imageing sensor includes counnter attack film 90, and counnter attack film 90 is arranged on the second table of the plate body 10 of light-passing board 40
(Fig. 7 and Fig. 9 is refer to) on face.
Imageing sensor in the present invention also includes substrate 50, photographic department 60 (for example: photoelectric conversion chip), mounting box 70
With lens 80, light-passing board 40 is arranged on the upper end of mounting box 70, and substrate 50 is arranged on the lower end of mounting box 70, and photographic department 60 is arranged
On substrate 50, light-emitting device 30 is arranged on inside mounting box 70, and lens 80 are located in the reflected light path of light-emitting device 30, sense
Light portion 60 and lens 80 are correspondingly arranged (refer to Fig. 5 to Fig. 9).Preferably, light-emitting device 30 go out light opening 210 towards printing opacity
Plate 40 side is arranged.
In embodiment as shown in Figures 5 to 9, lens 80 are two, and two lens 80 are set up in parallel.80 points of two lens
Not Wei the first lens 81 and the second lens 82, and the second lens 82 are located at the lower section of the refractive body 20 of light-passing board 40, so that through folding
The light that body of light 20 changes the direction of propagation enters in the second lens 82.Preferably, lens 80 are arranged perpendicular to substrate 50.Due to lens
80 are arranged perpendicular to substrate 50, thus are prevented effectively from because incident illumination and lens angle are excessive and cause incident light direct beam to enter lens 80
The interior problem forming interference signal, and also solve the problems, such as lens 80 installation difficulty.
Preferably, photographic department 60 is two, and two photographic departments 60 and two lens 80 correspond setting.Two photographic departments
60 include the first photographic department 61 and the second photographic department 62.Photographic department 60 is made up of many photosensitive areas and drive circuit, this driving electricity
The light that road can be emitted onto each photosensitive area carries out opto-electronic conversion, and by signal output apparatus.After the light receiving is converted into the signal of telecommunication,
Export (outwards exporting as image or Word message) through overdrive circuit, when image contribution constantly moves, described thereon
Image or Word message will be read continuously and take off.
In the example of the anti-fake mark that identification optical disclour printing ink is made, when the incident angle of light is different, optics
Spectral information after color shifting ink reflection is also different, and the signal of telecommunication after different spectral information conversions is also different, therefore pass through than
Compared with the design and color of image, the purpose of identification anti-fake mark just can be reached.
Angle between the light being sent by light-emitting device 30 in the present invention and original copy is the second angle b.When luminous dress
When putting 30 light sending and having two directivitys, the angle between the light of different angles and original copy carrys out table by b1, b2 respectively
Show.Observation angle between original copy and reflected light is the 3rd angle c.When lens 80 are two, the first reflected light and original copy
Angle is represented by c1, and the second reflected light is represented by c2 with the angle of original copy.When refractive body 20 is two, two refractive bodies 20
First angle a is represented by a1, a2 respectively.
Color shifting ink identification is introduced.When the light of light-emitting device 30 is with angle of incidence (second angle b) b1, b2 of preset range
Irradiate original copy, and with preset range view angle (when the 3rd angle c) receives the reflected light of original copy, because the reflection of color shifting ink is special
Property, the clearly demarcated image of two kinds of colouring discriminations of color shifting ink can be obtained.Taking hundred yuans as a example, above RMB, specified number word becomes
Color ink is turquoise variable color, and its identification would generally have following rule: ascending with angle of incidence b and view angle c, can present fresh
Blue-blue-black-green-bud green color change.Situation one, the angle of angle of incidence b and view angle c, in 0 ° to 20 ° scope, presents fresh
Blue color, the more little vivid blue color of angle is clearly more demarcated；Situation two, the angle of angle of incidence b and view angle c, in 20 ° to 40 ° scopes, is in
Existing blueness, the less blueness of angle is clearly more demarcated；Situation three, the angle of angle of incidence b and view angle c assumes black at 40 ° to 50 °；Feelings
Condition four, the angle of angle of incidence b and view angle c, at 50 ° to 70 °, assumes green, the bigger green of angle is clearly more demarcated；Situation five, incident
The angle of angle b and view angle c, at 70 ° to 90 °, assumes bud green color, and the more big bud green color of angle is clearly more demarcated.Generally also have in addition
Four kinds of situations, situation six, when angle of incidence b angle is at 45 ° about, view angle c is more than 50 °, and angle is bigger, and the green presenting is overstepping the bounds of propriety
Bright；Situation seven, when angle of incidence b angle is at 45 ° about, view angle c is less than 40 °, and the less blueness of angle is clearly more demarcated；Situation eight, when
At 45 ° about, angle of incidence is less than 40 ° to view angle c, and angle is less, and the blueness presenting is clearly more demarcated；Situation nine, when view angle c exists
45 ° about, angle of incidence b is more than 50 °, and angle is bigger, and the green presenting is clearly more demarcated.Hundred yuans of denomination numeral color shifting inks lead to
Often require to can recognize that one of following four kinds: 1.1, situation four or situation six or situation nine green and situation two or situation seven
Or situation eight is blue；Article 1.2, the bud green color of situation five and the vivid blue color of situation one；Article 1.3, situation four or situation six or situation
Nine greens and the vivid blue color of situation one；Article 1.4, the bud green color of situation five and situation two or situation seven or situation eight blueness.Pass through
The difference of two kinds of color data of contrast, to realize the differentiation of the true and false.
Latent image is introduced.When the light of light-emitting device 30 irradiates original copy with preset range angle of incidence b1 and b2, and with pre-
Determine the reflected light that scope view angle c1 and c2 receives original copy, because latent image grain direction is different, image reflecting effect is not yet
Same, two kinds of images that latent image has or not can be obtained.Specified number word latent image above wherein hundred yuans banknotes, its identification is logical
Often have following rule: situation ten, less than about 10 ° of angle of incidence b and view angle c, digital " 100 " latent image, angle can be observed
Degree less, observation clearer；Greater than about 10 ° of situation 11, angle of incidence b and view angle c, latent image is inconspicuous, and angle becomes
Greatly, latent image fades away.Hundred yuans of denominations numeral latent image require to can recognize that 1.5, situation ten have 100
Latent image, no 100 latent images.There is the difference of no data by contrasting latent image, to realize the differentiation of the true and false.
During using imageing sensor in the present invention, first image contribution is placed on light-passing board 40 towards imageing sensor
On, the light that then light-emitting device sends is radiated on image contribution through light-passing board 40, in the first reading position d point, reflects
A part for light is irradiated at the first photographic department 61 after the first lens 81 collection, simultaneously in the second reading position e point, reflected light
Another part collected by the second lens 82 after refractive body 20 after be irradiated at the second photographic department 62, now user can be seen
The latent image of altimetric image original copy and the color of image, are identified to image.
In embodiment as shown in Figure 5, green and blue identification are carried out to the denomination numeral color shifting ink in RMB.
When light-emitting device 30 sends the light of b=45 ° of angle of incidence, in reading position d point, the part that color shifting ink diffuses, through seeing
First lens the 81 to the first photographic department 61 is passed through in c1=90 ° of angle measurement, can achieve that " angle of incidence b angle is on 45 ° of left sides for above-mentioned situation six
The right side, view angle c is more than 50 °, and angle is bigger, and the green presenting is clearly more demarcated " greenness identification.Enter when light-emitting device 30 sends b=45 °
The light of firing angle, in reading position d point, the irreflexive light of color shifting ink, through refractive body 20, adjusts the first angle a of refractive body 20,
Make c2=20 ° of view angle pass through second lens the 82 to the second photographic department 62, can achieve that " angle of incidence b angle is at 45 ° for above-mentioned situation seven
Left and right, view angle c is less than 40 °, and the less blueness of angle is clearly more demarcated " blue identification.
In embodiment as shown in Figures 6 and 7, bud green color and vivid blue is carried out to the denomination numeral color shifting ink in RMB
Colour recognition.When light-emitting device 30 sends the light of b1=70 ° of angle of incidence, in reading position d point, color shifting ink diffuse one
Part, through view angle, c1=90 ° is passed through first lens the 81 to the first photographic department 61, can achieve above-mentioned situation five " angle of incidence b and sight
Angle measurement c angle, at 70 ° to 90 °, assumes emerald green, and the more big bud green color of angle is clearly more demarcated " bud green colour recognition.Work as light-emitting device
30 light sending b2=20 ° of angle of incidence, in reading position e point, the part that color shifting ink diffuses, through refractive body 20, adjust
First angle a of whole refractive body 20, makes c2=20 ° of view angle pass through second lens the 82 to the second photographic department 62, can achieve above-mentioned
Situation one " angle of incidence b and view angle c angle, in 0 ° to 20 ° scope, assume vivid blue color, the more little vivid blue color of angle is clearly more demarcated "
Vivid blue colour recognition.In this embodiment, light-emitting device 30 is the light-emitting device shown in Fig. 4.The emergent light of this light-emitting device 30
There is the directivity of both direction.Angle of incidence b is also respectively b1 and b2, and reading position also has d point and two positions of e point, so
Allow imageing sensor to be readily available view angle c2 and be less than 20 °.
In embodiment as shown in Figures 6 and 7, the denomination numeral latent image in RMB is identified.When luminous dress
Put 30 light sending b1=70 ° of angle of incidence, in reading position d point, the part that color shifting ink diffuses, through view angle c1=
90 ° are passed through first lens the 81 to the first photographic department 61, can achieve above-mentioned situation 11 " greater than about 10 ° of angle of incidence b and view angle c,
Latent image is inconspicuous, and angle becomes big, and latent image fades away " latent image of None- identified numeral " 100 ".When luminous dress
Put 30 light sending b1=10 ° of angle of incidence, in reading position e point, the part that color shifting ink diffuses, through refractive body 20,
First angle a of adjustment refractive body 20, makes c2=10 ° of view angle pass through second lens the 82 to the second photographic department 62, can achieve
" less than about 10 ° of angle of incidence b and view angle c, can observe digital " 100 " latent image, and angle is less, observation ground to state situation ten
Clearer " latent image of digital " 100 " can be identified.
In embodiment as shown in Figure 8, bud green color and vivid blue face are carried out to the denomination numeral color shifting ink in RMB
Colour discrimination.When light-emitting device 30 sends the light of b1=70 ° of angle of incidence, in reading position d point, diffuse one of color shifting ink
Point, through view angle, c1=90 ° is passed through first lens the 81 to the first photographic department 61, can achieve above-mentioned situation five " angle of incidence b and observation
Angle c angle, at 70 ° to 90 °, assumes emerald green, and the more big bud green color of angle is clearly more demarcated " bud green colour recognition.Adjustment left side refractive power
First angle a2 of body 20, when light-emitting device 30 sends the light of b2=20 ° of angle of incidence, in reading position e point, color shifting ink overflows anti-
Penetrate a part for light, through refractive body 20, the first angle a1 of adjustment right side refractive body 20, make c2=20 ° of view angle pass through second
Lens the 82 to the second photographic department 62, can achieve that " angle of incidence b and view angle c angle, in 0 ° to 20 ° scope, present above-mentioned situation one
Vivid blue color, the more little vivid blue color of angle is clearly more demarcated " vivid blue colour recognition.In this embodiment, refractive body 20 is two, passes through
Two refractive bodies of adjustment 20 and the size of the first angle a of first surface, can be readily available view angle c2 and be less than 20 °.
In embodiment as shown in Figure 8, the denomination numeral latent image in RMB is identified.When light-emitting device 30
Send the light of b1=70 ° of angle of incidence, in reading position d point, the part that color shifting ink diffuses, through c1=90 ° of view angle
By first lens the 81 to the first photographic department 61, can achieve that " angle of incidence b and view angle c is greater than about 10 ° to above-mentioned situation 11, hidden
Shape image is inconspicuous, and angle becomes big, and latent image fades away " latent image of None- identified numeral " 100 ".Adjustment left side folding
First angle a2 of body of light 20, when the light of b2=15 ° of angle of incidence, in reading position e point, diffuse one of color shifting ink
Point, through refractive body 20, the first angle a1 of adjustment right side refractive body 20, make c2=15 ° of view angle pass through the second lens 82 to the
Two photographic departments 62, can achieve that " less than about 10 ° of angle of incidence b and view angle c can observe digital " 100 " stealthy figure to above-mentioned situation ten
Picture, angle is less, observes clearer " latent image of digital " 100 " can be identified.
With the increase of angle of incidence b in the present invention, reflected light gradually becomes strong, and refraction light gradually dies down.When view angle c is less than
30 °, reflected light is weaker, when c is more than 40 °, occurs reflected light to strengthen until being totally reflected.The light of reflection is directly entered the second lens
82, form interference signal.So that controlling the angle of angle of incidence b, or counnter attack film 90 is arranged on light-passing board 40 to prevent
Reflected light strengthens.
In the above case said, the vivid blue and bud green color characteristic difference of situation one and situation five identification is maximum, but due to feelings
The angle of incidence b of condition one and view angle c is little, and close to the straight angle, thus the ratio that imageing sensor of the prior art generally does is larger.With
The imageing sensor that imageing sensor of the prior art is compared in the present invention is not only easy to performance one and the knowledge of situation five
Other function, and there is small volume, be easily installed, particularly can be arranged on the narrow and small atm machine of installing space and currency examination
On the equipment such as machine, realize automatic identification.
Imageing sensor in the present invention only using a light-emitting device 30, thus can make between reading position d point and e point
Have the characteristics that apart from short, thus being prevented effectively from light intensity attenuation it is ensured that the output reliability of signal.In addition, the present invention
In imageing sensor also have compact conformation, miniaturization, low cost the features such as.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of light-emitting device is it is characterised in that include:
Luminous body；
Light conductor (100), described light conductor (100) has arc light guiding surface, and described luminous body is arranged on described light conductor (100)
On；
Shading shell (200), described light conductor (100) is arranged in described shading shell (200), and described shading shell
(200) there is light opening (210), described go out light opening (210) opening angle scope be less than 90 degree；
Reflective structure (300), described reflective structure (300) is arranged on described leaded light along the length direction of described light conductor (100)
Body (100) go out, with described in described shading shell (200), the side that light opening (210) is oppositely arranged.
2. light-emitting device according to claim 1 is it is characterised in that described reflective structure (300) is reflecting pattern.
3. light-emitting device according to claim 2 is it is characterised in that described reflective structure (300) is multiple, multiple described
Reflective structure (300) is along the circumferentially-spaced spread configuration of described light conductor (100).
4. light-emitting device according to claim 1 is it is characterised in that described light-emitting device (30) also includes condensing body
(400), described condensing body (400) is arranged on and goes out light opening (210) place described in described shading shell (200).
5. light-emitting device according to claim 4 it is characterised in that described condensing body (400) away from described light conductor
(100) side has optically focused lobe (410).
6. light-emitting device according to claim 5 is it is characterised in that described optically focused lobe (410) is multiple, Duo Gesuo
State optically focused lobe (410) along the circumferentially-spaced spread configuration of described light conductor (100).
7. light-emitting device according to claim 1 is it is characterised in that described light conductor (100) is cylinder.
8. a kind of imageing sensor, including light-emitting device (30) and light-passing board (40), described light-emitting device (30) is located at described
The side of tabula rasa (40) is it is characterised in that described light-emitting device (30) is the luminous dress any one of claim 1 to 7
Put (30).
9. imageing sensor according to claim 8 is it is characterised in that described light-passing board (40) includes:
Plate body (10)；
Refractive body (20), described refractive body (20) is arranged on described plate body (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410180187.8A CN103968303B (en) | 2014-04-30 | 2014-04-30 | Light-emitting device and image sensor |
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| CN201410180187.8A CN103968303B (en) | 2014-04-30 | 2014-04-30 | Light-emitting device and image sensor |
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| CN103968303B true CN103968303B (en) | 2017-01-18 |
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| CN110360519A (en) * | 2019-08-13 | 2019-10-22 | 华域视觉科技(上海)有限公司 | A kind of optronics system and car light |
| CN114992539A (en) * | 2022-06-02 | 2022-09-02 | 上海鲸岚科技有限公司 | Lamp area and VR/AR handle |
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| JP2004056425A (en) * | 2002-07-19 | 2004-02-19 | Nippon Sheet Glass Co Ltd | Line lighting device and picture reader |
| US7538916B2 (en) * | 2004-02-26 | 2009-05-26 | Ricoh Company, Ltd. | Document lighting device, image reader, color document reader, and image forming device |
| CN2921582Y (en) * | 2006-06-15 | 2007-07-11 | 威海华菱光电有限公司 | Bar shape light source for image reading device |
| JP2009277551A (en) * | 2008-05-15 | 2009-11-26 | Pfu Ltd | Lighting apparatus, and image reading apparatus |
| CN202736154U (en) * | 2012-09-06 | 2013-02-13 | 威海华菱光电股份有限公司 | Optical conductor of contact-type image sensor |
| JP5655834B2 (en) * | 2012-09-20 | 2015-01-21 | ウシオ電機株式会社 | Light source device |
| CN203810205U (en) * | 2014-04-30 | 2014-09-03 | 威海华菱光电股份有限公司 | Light-emitting device and imaging sensor |
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