CN103308924A - Optical sensing device - Google Patents
Optical sensing device Download PDFInfo
- Publication number
- CN103308924A CN103308924A CN2012100686375A CN201210068637A CN103308924A CN 103308924 A CN103308924 A CN 103308924A CN 2012100686375 A CN2012100686375 A CN 2012100686375A CN 201210068637 A CN201210068637 A CN 201210068637A CN 103308924 A CN103308924 A CN 103308924A
- Authority
- CN
- China
- Prior art keywords
- light
- optical sensing
- sensing apparatus
- spare
- illumination light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to an optical sensing device comprising a light emitting component, a light collecting component and a sensing component, wherein the light emitting component is used for emitting an illumination light; the light collecting component is used for receiving the illumination light and enabling the illumination light to be collected and converged to emit, the illumination light projects an object along an emission path after emitting, the object reflects an imaging light, and the imaging light enters the light collecting component and then emits; the sensing component is used for capturing the imaging light reflected after the illumination light emits to the object through a image taking path; and the emission path is coaxial with the image taking path. According to the optical sensing device disclosed by the invention, the light collecting component receives and emits the illumination light to form a surrounding light spot on the object, and the emission path is coaxial with the image taking path, so that bright and large-range light ray distribution is generated, and the sensing component obtains an optimal object image.
Description
Technical field
The present invention relates to a kind of optical sensing apparatus, particularly a kind of coaxial optical sensing apparatus of illumination light and imaging that makes.
Background technology
The purposes of optical sensing apparatus is very extensive, it can be applicable to optical mouse, scanning machine, multifunction printer and optical fingerprint identification system etc., and optical sensing apparatus is for the optical imagery or the image variation that capture or respond to an object in these electronic installations.
Be arranged at an optical mouse as example take optical sensing apparatus, the optical sensing apparatus in the existing optical mouse mainly comprises a light-emitting component, an inductor and an optical lens.For optical mouse, wherein the object of the required sensing of optical sensing apparatus is the surface of an object.Light-emitting component and the inductor distance of being separated by, when light-emitting component produces an illumination light, illumination light is guided and is projected to the object that needs sensing, then rear generation one imaging is reflected with illumination light in the surface of object, imaging is resent to inductor after concentrating via optical lens, so reaches the optical imagery of optical sensing apparatus acquisition and induction object or the effect of image variation.The optical sensing apparatus of optical mouse is mainly used to capture and responds to the image variation of object, and converts an electronic signal to, transmits signals to one of optical mouse again and processes in the module of electronic signal and process.
The square distance of the light intensity of light source projects and light travel path is inversely proportional to.Therefore, the optical sensing apparatus guiding illumination light of existing optical mouse is longer to the travel path of object, so when illumination light projects object, if travel path length will cause the consume of luminous energy, so that illumination efficiency is lower, often need high-intensity light-emitting component to produce bright illumination light.Therefore, when optical sensing apparatus arranges a high-intensity light-emitting component, produced optical sensing apparatus power consumption and the excessive problem of volume.Again because existing illumination path and capture path disalignment, therefore when light-emitting component is the different wave length line, when adjust apart from the time, because disalignment causes the variation of hot spot large, and so that inductor can't receive different wave length line (for example red, blue, in vain different light).In other words, when the distance of light-emitting component and object changed, the inductor of prior art may namely can't detect the light that original illuminating part throws.Comprehensively above-mentioned, so existing optical sensing apparatus will cause low usefulness, volume is excessive and can't be used in the problem such as different wave length source.
Summary of the invention
Provide a kind of optical sensing apparatus according to embodiments of the invention, use that to solve existing optical sensing apparatus sensing article image efficiency good and can't be used in the problem such as different wave length source.
According to the disclosed a kind of optical sensing apparatus of embodiments of the invention, comprise an illuminating part, a light harvesting spare and an induction pieces.Illuminating part is in order to launch an illumination light.Light harvesting spare is in order to receive illumination light and to make illumination light concentrate convergence to penetrate, and afterwards, illumination light is projected to an object along a transmission path, penetrates after an imaging of object reflection enters light harvesting spare.Induction pieces has a capture path, the imaging of induction pieces in order to penetrate via capture path acquisition light-self-collecting spare.Wherein, transmission path is coaxial with the capture path.
According to the disclosed a kind of optical sensing apparatus of embodiments of the invention, illumination light is projeced on the object via transmission path and forms one around hot spot.
According to the disclosed optical sensing apparatus of embodiments of the invention, wherein the illumination light of object that illuminating part is projected to is concentrated after the convergence again directive object by light harvesting spare, and is bright around hot spot to form one.Simultaneously, because it is coaxial with the capture path of induction pieces that illumination light light-self-collecting spare concentrates convergence to penetrate to the transmission path of object, and then by bright and large-scale distribution of light, object obtains become clear more and reaches uniform light source and again imaging is reflexed to induction pieces, uses making induction pieces obtain best object image.Therefore the disclosed optical sensing apparatus of the present embodiment solves that existing optical sensing apparatus sensing article image efficiency is not good, volume is excessive and can't be used in the problem such as different wave length source, and then reaches the effect that improves light-source brightness, contrast, efficient, power and energy saving and can be used in simultaneously the different wave length source.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the structure cut-away view according to the optical sensing apparatus of the first embodiment of the present invention;
Fig. 2 A is the intensity map according to the first distance of the optical sensing apparatus of the first embodiment of the present invention;
Fig. 2 B is the intensity map according to the second distance of the optical sensing apparatus of the first embodiment of the present invention;
Fig. 2 C is the intensity map according to the 3rd distance of the optical sensing apparatus of the first embodiment of the present invention;
Fig. 3 is the illuminating part of optical sensing apparatus according to a second embodiment of the present invention and the three-dimensional structure diagram of light harvesting spare;
Fig. 4 is the illuminating part of optical sensing apparatus according to a second embodiment of the present invention and the structure cut-open view of light harvesting spare;
Fig. 5 A is the intensity map of the first distance of optical sensing apparatus according to a second embodiment of the present invention;
Fig. 5 B is the intensity map of the second distance of optical sensing apparatus according to a second embodiment of the present invention;
Fig. 5 C is the intensity map of the 3rd distance of optical sensing apparatus according to a second embodiment of the present invention;
Fig. 6 is the cross-sectional schematic of the optical sensing apparatus of a third embodiment in accordance with the invention;
Fig. 7 is the cross-sectional schematic of the optical sensing apparatus of a fourth embodiment in accordance with the invention;
Fig. 8 is the cross-sectional schematic of optical sensing apparatus according to a fifth embodiment of the invention;
Fig. 9 is the cross-sectional schematic of optical sensing apparatus according to a sixth embodiment of the invention.
Wherein, Reference numeral
10 optical sensing apparatus
1000 electronic installations
1010 electronic installations
1020 electronic installations
1030 electronic installations
11 illuminating parts
12 light harvesting spares
121 incident sections
122 light out part
123 inside surfaces
1231 external reflections surface
124 exit portals
125 entrance ports
126 light inlets
127 light-emitting windows
128 light harvesting annulated columns
129 hollow region
13 induction pieces
131 imaging regions
14 optical textures
141 penetrating regions
142 optical zone
15 lightguides
16 housings
161 perforates
17 disks
171 perforation
18 printed circuit board (PCB)s
19 lens
30 objects
301 projected areas
Embodiment
Below in embodiment, be described in detail detailed features of the present invention and advantage, its content is enough to make any those skilled in the art to understand technology contents of the present invention and implements according to this, and according to the disclosed content of this instructions, claim scope and accompanying drawing, any those skilled in the art can understand purpose and the advantage that the present invention is correlated with easily.
Disclosed a kind of optical sensing apparatus according to the present invention is used the light travel path that solves existing optical sensing apparatus longer, and produces that the sensing article image efficiency is not good, volume is excessive and can't be used in the problem such as different wave length source.Among the disclosed embodiment, optical sensing apparatus is applied in the electronic installation according to the present invention, and electronic installation is to be an optical mouse.But non-in order to limit the present invention, in other embodiments, electronic installation can be scanning machine, multifunction printer and optical fingerprint identification system.
Below will introduce the optical sensing apparatus of the disclosed embodiment according to the present invention, and please refer to Fig. 1, Fig. 1 is the structure cut-away view according to the electronic installation of the first embodiment of the present invention.Electronic installation 1000 comprises an optical sensing apparatus 10.Electronic installation 1000 is by optical imagery or the image variation of optical sensing apparatus 10 acquisitions or induction object 30.Optical sensing apparatus 10 comprises an illuminating part 11, a light harvesting spare 12, an induction pieces 13, an optical texture 14, housing 16, disk 17 and a printed circuit board (PCB) 18.Optical texture 14 is arranged on the housing 16.Light harvesting spare 12 is positioned at a side of optical texture 14, and corresponding with the perforate 161 of housing 16.Light harvesting spare 12 has an incident section 121, a light out part 122 and inside surface 123, and incident section 121 is corresponding to optical texture 14, and light out part 122 is corresponding to perforate 161.Optical texture 14 has a lightguide 15, a penetrating region 141 and an optical zone 142.Optical zone 142 is positioned at a relative side of light harvesting spare 12.Illuminating part 11 is arranged at an end of lightguide 15, and illuminating part 11 is electrically connected printed circuit board (PCB) 18 simultaneously.Disk 17 is arranged on the optical texture 14, and disk 17 has a perforation 171, and perforation 171 corresponds to optical zone 142.Induction pieces 13 is arranged on the disk 17 and is electrically connected printed circuit board (PCB) 18, and induction pieces 13 has a capture path, capture path respective axes L.Have a processing module (not illustrating) in the printed circuit board (PCB) 18, processing module is sent to the imaging signal of induction pieces 13 in order to processing, and housing 16 is in order to fixing and support of optical structure 14.
Illuminating part 11 is in order to launching an illumination light (not illustrating), and illumination light is collected the incident section 121 that is passed to light harvesting spare 12 via lightguide 15, when illumination light enters light harvesting spare 12, because penetrating different media, reflects and produce.Then, illumination light reflects and scattering in inside surface 123, and light harvesting spare 12 is concentrated the convergence illumination light by this, and makes illumination light form a projected area 301 from light out part 122 towards perforate 161 outer ejaculations on object 30, namely around hot spot, to produce bright and large-scale distribution of light.After illumination light light-self-collecting spare 12 concentrated convergence to penetrate, the travel path that illumination light is projected to object 30 was defined as a transmission path.Then, object 30 indirect illumination light and form an imaging, imaging enters light harvesting spare 12 by perforate 161, and imaging sequentially passes penetrating region 141, optical zone 142 and bores a hole 171.At last, imaging is projected on the induction pieces 13 and forms an imaging region 131, and by induction pieces 13 acquisition imagings.Induction pieces 13 is passed to imaging printed circuit board (PCB) 18 again and processes.After it should be noted that illumination light concentrates convergence to penetrate via light harvesting spare 12, it is coaxial with the capture path of induction pieces 13 that illumination light is projected to the transmission path of object 30.
In the present embodiment, lightguide 15, penetrating region 141 and optical zone 142 are formed in one, this integrated structure can reduce the volumetric spaces of optical sensing apparatus 10, and does not need to make respectively a plurality of elements and made up, therefore reduces the manufacturing cost of optical sensing apparatus 10.In addition, light harvesting spare 12 is a hollow area, and lightguide 15 and penetrating region 141 are a solid transmission region, and when light passed lightguide 15, penetrating region 141 and optical zone 142, by three kinds of media, light produced birefringence because of sequentially.Moreover optical texture 14 is embedded between the housing 16, and perforate 161 is as light out part 122, also can affect the shape of the projected area 301 of object 30 and also has effect such as the concentrated convergent light rays of light harvesting spare 12.
In addition, the perforation 171 of disk 17 enters induction pieces 13 in order to filter optical texture 14 interior unnecessary scattered beams, namely bore a hole and 171 only allow that 301 imaging reaches the imaging region 131 of induction pieces 13 from projection zone in reflection, the optical sensing apparatus 10 of the present embodiment obtains clearly imaging by this.
The defined illumination light of the present invention is for penetrating to the light of object 30 from illuminating part 11, and imaging is the light that is projected to inductor 13 for illumination light after object 30 reflections.
The illuminating part 11 of the present embodiment is to be surface-mounting LED (Surface Mount Device Light Emitting Diode, be called for short SMD-LED), use SMD-LED to have the effect of power saving as illuminating part 11, but non-in order to limit the present invention.In other embodiments, illuminating part 11 is to be light emitting diode (Light Emitting Diode is called for short LED) or Organic Light Emitting Diode (Organic Light Emitting Diode is called for short OLED).
The disclosed embodiment according to the present invention, the surface of object 30 is to optical sensing apparatus 10, and the projected area 301 of illumination light is positioned on the surface of object 30, the surface of above-mentioned object 30 can be opaque, translucent, level and smooth or inhomogeneous.The width of the projected area 301 of the present embodiment and shape depend on the illumination light course via lightguide 15, light harvesting spare 12, and the shape of light out part 122 and perforate 161.In the present embodiment, be to be an annular around hot spot, but non-in order to limit the present invention.In other embodiments, the shape around hot spot can be other shapes such as positive circle, square, ellipse or pentagon.Simultaneously, in the present embodiment, the shape of projected area 301 can change according to different light kinds.
In addition, a longest distance of projected area 301 is between between a times to two times of another longest distance of imaging region 131.
The illumination light that below will introduce the first embodiment is projected to the Luminance Distribution of object 30, please be simultaneously with reference to Fig. 1, Fig. 2 A, Fig. 2 B and Fig. 2 C, Fig. 2 A is the intensity map according to the first distance of the optical sensing apparatus of the first embodiment of the present invention, Fig. 2 B is the intensity map according to the second distance of the optical sensing apparatus of the first embodiment of the present invention, and Fig. 2 C is the intensity map according to the 3rd distance of the optical sensing apparatus of the first embodiment of the present invention.Fig. 2 A, Fig. 2 B and Fig. 2 C are of a size of 9 square millimeters of square diagrams of X axis and Y-axis, first refers to that apart from Z optical sensing apparatus 10 and the distance of object 30 are 0.2 millimeter (mm), second distance Z refers to that optical sensing apparatus 10 and the distance of object 30 are 0.6mm, the 3rd refers to that apart from Z optical sensing apparatus 10 and the distance of object 30 are 0.9mm, can be learnt by diagram, (0.2mm when the distance of optical sensing apparatus 10 and object 30 changes, 0.6mm and 0.9mm), formed shape and the dimensional discrepancy around hot spot of illumination light is minimum, therefore, can understand easily illumination light from diagram concentrates the convergence ejaculation rear coaxial with the capture path of induction pieces 13 to the transmission path of object 30 via light harvesting spare 12.
" coaxial " of the present invention is to be defined as transmission path to be projected to object 30 less with the angle of cut in capture path, when change between optical sensing apparatus 10 and object 30 apart from the time, make a variation little around the scope of hot spot.
Comprehensively above-mentioned, in the present embodiment, optical sensing apparatus 10 is namely collected illumination light in a coniform gatherer mode by shape and the architectural feature of lightguide 15 and light harvesting spare 12, so that illumination light concentrates convergence and be directed on the object 30, bright around hot spot to produce.Simultaneously, after illumination light concentrated convergence to penetrate via light harvesting spare 12, it is coaxial with the capture path of induction pieces 13 that illumination light is projected to the transmission path of object 30, can make by this illumination light be projected to object 30 after, can directly reflect and follow the capture path and return induction pieces 13.
Below will introduce illuminating part and the light harvesting spare of the optical sensing apparatus of the second embodiment, please be simultaneously with reference to Fig. 3 and Fig. 4, Figure 3 shows that the illuminating part of optical sensing apparatus of the second embodiment and the three-dimensional structure diagram of light harvesting spare, Figure 4 shows that the illuminating part of optical sensing apparatus of the second embodiment and the structure cut-open view of light harvesting spare.In the present embodiment, light harvesting spare 12 is to be an irregular cone structure, but the shape of light harvesting spare 12 is non-in order to limit the present invention, and above-mentioned shape will be adjusted according to actual conditions.Light harvesting spare 12 comprises an incident section 121, a light out part 122 and a light harvesting annulated column 128.Incident section 121 and light out part 122 are positioned at the relative both sides of light harvesting spare 12.Light harvesting annulated column 128 is the entity material, forms a hollow region 129 in light harvesting annulated column 128.Wherein the width first of incident section 121 is apart from the width second distance d2 of d1 greater than light out part 122.In more detail, incident section 121 has entrance port 125 and exit portal 124, and entrance port 125 is around exit portal 124.Light out part 122 is in the face of object 30, and light out part 122 has light-emitting window 127 and light inlet 126, and light-emitting window 127 is around light inlet 126.Entrance port 125 and light-emitting window 127 are corresponding to the relative both sides of light harvesting annulated column 128, and exit portal 124 and light inlet 126 are corresponding to the relative both sides of hollow region 129.Illuminating part 11 is positioned on the entrance port 125.And the inside surface 123 of light harvesting annulated column 128 is concentrated to light-emitting window 127 ejaculations with the illumination light of collection, guiding and 11 emissions of convergence illuminating part by direct projection, scattering and the principle of reflection of light.The external reflection of light harvesting annulated column 128 surface 1231 is by scattering and the reflections of light, collects and guiding imaging and concentrate to exit portal 124 and penetrate in hollow region 129.In addition, lens 19 are arranged in the hollow region 129 and connect light harvesting annulated column 128.In the present embodiment, lens 19 are to be formed in one with light harvesting annulated column 128, but non-in order to limit the present invention, in other embodiments, lens 19 also can be different materials from light harvesting annulated column 128.Induction pieces 13 has a capture path, capture path respective axes L.
Below introduce the capture mode of the optical sensing apparatus 10 of the second embodiment.Specifically, when illuminating part 11 penetrates an illumination light, illumination light is the 125 light harvesting annulated columns 128 of injecting light harvesting spare 12 from the entrance port, illumination light via the inside surface 123 of light harvesting annulated column 128 reflect, scattering or directly direct projection, penetrate to object 30 and illumination light is concentrated to the light-emitting window 127 of light out part 122, it is one bright around hot spot that illumination light forms.Object 30 indirect illumination light and form an imaging then, imaging enters the hollow region 129 of light harvesting spare 12 via the light inlet 126 of light out part 122, after passing lens 19, penetrate to induction pieces 13 again induction pieces 13 acquisition imagings from exit portal 124 by the reflection on direct projection and external reflection surface 1231.In addition, after illumination light is concentrated ejaculation by light harvesting spare 12, it is coaxial with the capture path of induction pieces 13 that illumination light is projected to the transmission path of object 30, concentrates to penetrate to object 30 because of illumination light light-self-collecting spare 12 again to form one around hot spot, and induction pieces 13 can obtain good imaging effect by this.
The illumination light that below will introduce the second embodiment is projected to the Luminance Distribution of object 30, please be simultaneously with reference to Fig. 3, Fig. 4, Fig. 5 A, Fig. 5 B and Fig. 5 C, Fig. 5 A is the intensity map of the first distance of optical sensing apparatus according to a second embodiment of the present invention, Fig. 5 B is the intensity map of the second distance of optical sensing apparatus according to a second embodiment of the present invention, and Fig. 5 C is the intensity map of the 3rd distance of optical sensing apparatus according to a second embodiment of the present invention.The size of Fig. 5 A, Fig. 5 B and 5C figure is 4 square millimeters of square diagrams for X axis and Y-axis, among Fig. 5 A, the 4th refers to that apart from Z optical sensing apparatus 10 and the distance of object 30 are 0.2 millimeter (mm), among Fig. 5 B the 5th refers to that apart from Z optical sensing apparatus 10 and the distance of object 30 are 0.6mm, among Fig. 5 C, the 6th refers to that apart from Z optical sensing apparatus 10 and the distance of object 30 are 0.9mm.Can be learnt by diagram, when the distance of optical sensing apparatus 10 and object 30 changes (0.2mm, 0.6mm and 0.9mm), the formed shape around hot spot of illumination light is minimum with the scope variation, concentrates via light harvesting spare 12 that to restrain the capture path of penetrating to the transmission path of object 30 and induction pieces 13 be for coaxial therefore can understand easily illumination light.
Comprehensively above-mentioned, in a second embodiment, the architectural feature of the circular cylindrical of the light harvesting annulated column 128 by light harvesting spare 12 is namely in the mode of tubulose guiding, the illumination light that illuminating part 11 is throwed concentrates convergence to be directed on the object 30 by light harvesting annulated column 128, to produce the bright hot spot that centers on.Simultaneously, it is coaxial with the capture path of induction pieces 13 that illumination light concentrates convergence to penetrate to the transmission path of object 30 via light harvesting spare 12, after making by this illumination light be projected to object 30, can directly reflect and follow the capture path and return induction pieces 13, to improve the capture efficient of induction pieces 13.
According to above-mentioned first and the narration of the second embodiment, can understand easily the structure of the optical sensing apparatus that replaces to following embodiment, and reach identical effect.Below will introduce the optical sensing apparatus of third embodiment of the invention, please refer to Fig. 6, Figure 6 shows that the structural representation of the optical sensing apparatus of the 3rd embodiment.Optical sensing apparatus 10 comprises an illuminating part 11, an induction pieces 13 and a light harvesting spare 12.Illuminating part 11 is in order to launch an illumination light (not illustrating), induction pieces 13 is in order to receive an imaging (not illustrating), light harvesting spare 12 is in order to receive illumination light and illumination light is penetrated, so that illumination light forms one around hot spot in object (not illustrating) is upper.In more detail narration, the light harvesting spare 12 of optical sensing apparatus 10 has an incident section 121, a light out part 122 and external reflection surface 1231.The width of incident section 121 (the 3rd apart from d3) is greater than the width (the 4th apart from d4) of light out part 122.Incident section 121 is towards induction pieces 13, and light out part 122 is not towards object (illustrating), and external reflection surface 1231 is to be the incident section 121 of light harvesting spare 12 and the inboard formed curved surface between the light out part 122.Induction pieces 13 has a capture path, and the capture path comprises axis L.
In the present embodiment, after illuminating part 11 emissions one illumination light, the incident section 121 of light harvesting spare 12 receives illumination light, structure by light harvesting spare 12 is so that illumination light reflects in the external reflection surface 1231 of light harvesting spare 12, scattering or directly after the direct projection, the illumination light again light out part 122 outside ejaculations of light-self-collecting spare 12 becomes clear and large-scale distribution of light to form around hot spot, to produce.The imaging of then object (not illustrating) reflection enters light harvesting spare 12, last induction pieces 13 acquisition imagings.
In addition, after illumination light light-self-collecting spare 12 was concentrated and penetrated, it is coaxial with the capture path of induction pieces 13 that illumination light is projected to the transmission path of object (not illustrating).
In fact, because the illuminating part of the embodiment of the invention 11 is to be area source, illuminating part 11 emitted light numbers are specific limited not, and the order of reflection of light in light harvesting spare 12 can be zero degree to infinitely repeatedly.
Below will introduce the optical sensing apparatus of disclosed the 4th embodiment according to the present invention, please refer to Fig. 7, Figure 7 shows that the cross-sectional schematic of the optical sensing apparatus of the 4th embodiment, element in Fig. 7 is similar to the element of Fig. 6, therefore the identical identical or similar structure of symbology wherein, wherein analog structure repeats no more.Electronic installation 1010 comprises optical sensing apparatus 10, printed circuit board (PCB) 18 and housing 16, optical sensing apparatus 10 is arranged between printed circuit board (PCB) 18 and the housing 16, has a processing module (not illustrating) in the printed circuit board (PCB) 18, processing module is sent to the imaging signal of induction pieces 13 in order to processing, housing 16 is in order to fixing and support of optical sensing apparatus 10.In more detail narration, the light harvesting spare 12 of optical sensing apparatus 10 has an incident section 121, a light out part 122 and external reflection surface 1231.Incident section 121 is towards induction pieces 13, and incident section 121 has entrance port 125 and exit portal 124, and light out part 122 is towards object 30, and external reflection surface 1231 is to be the incident section 121 of light harvesting spare 12 and the inboard formed curved surface between the light out part 122.Optical sensing apparatus 10 also comprises a lightguide 15, be arranged between illuminating part 11 and the light harvesting spare 12, lightguide 15 in order to the illumination light guiding illuminating part 11 and penetrate from the entrance port 125 directive light harvesting spares 12.Lens 19 are arranged between induction pieces 13 and the light harvesting spare 12, and lens 19 usefulness are so that imaging light-self-collecting spare 12 is concentrated into picture after penetrating, and make imaging directive induction pieces 13.
In addition, after the capture path of induction pieces 13, the optical axis of lens 19 and illumination light light-self-collecting spare 12 were concentrated and penetrated, it is coaxial that illumination light is projected to the transmission path of object 30.One imaging region 131 is positioned at induction pieces 13, and imaging region 131 is induction pieces that imaging is injected 13 and form a surf zone.
The inductor 13 that below will introduce the 4th embodiment receives the image method of an object 30.Printed circuit board (PCB) 18 control illuminating parts 11 penetrate first illumination light, the illumination light that lightguide 15 guiding illuminating parts 11 penetrate is 125 directive light harvesting spares 12 from the entrance port, the incident section 121 of light harvesting spare 12 receives the illumination light that illuminating part 11 is injected, then illumination light reflect in the external reflection surface 1231 of light harvesting spare 12, scattering or directly direct projection, and make the guiding of illumination light light harvesting spare 12 pass light out part 122 and directive object 30.When illumination light is projected to object 30, in fact illumination light is the different light of countless many angles, by the external reflection surface 1231 of light harvesting spare 12 and the planform of light out part 122, so that illumination light contacts the surface of object 30 and forms a projected area 301, namely center on hot spot.Therefore, illumination light can be concentrated directive object 30 by light harvesting spare 12, and light harvesting spare 12 is concentrated and is penetrated to the transmission path of object 30 coaxially with the capture path of induction pieces 13, and produces high-intensity light source in projected area 301, produces bright and large-scale distribution of light.Then, when illumination light is incident upon object 30 and optical reflection imaging when returning light harvesting spare 12, after imaging sequentially passes the exit portal 124 of light out part 122 and incident section 121, form an imaging region 131 by induction pieces 13 acquisitions, the imaging of its imaging region 131 will utilize induction pieces 13 and form the processing module processing electronic signal that electronic signal is sent to printed circuit board (PCB) 18.
The light harvesting spare of the present embodiment 12 is to be a cone structure, and this cone structure is asymmetric shape simultaneously, but non-in order to limit the present invention.
The light harvesting spare of the present embodiment 12 is dispersion and reflections of improving illumination light via spraying a scattering diluent on external reflection surface 1231.In the present embodiment and other embodiment, the external reflection surface 1231 of light harvesting spare 12 is for microgranular, uses and disperses after making illumination light be incident upon external reflection surface 1231.
Below will introduce an embodiment of different light harvesting spares, and please refer to Fig. 8, and Figure 8 shows that the cross-sectional schematic of the optical sensing apparatus of the 5th embodiment, the element in Fig. 8 is similar to the element of Fig. 7, so the identical identical or similar structure of symbology wherein.The difference of the 5th embodiment and the 4th embodiment is in the electronic installation 1020, light harvesting spare 12 is to be an optical mirror slip, therefore the optics sense side device 10 of the present embodiment comprises lens 19 and light harvesting spare 12 totally two eyeglasses, the present embodiment can improve modulation transfer function (the Modulation Transfer Function of optical sensing apparatus 10 by this, be called for short MTF) and the depth of field (Depth of Field is called for short DoF).Wherein incident section 121 and light out part 122 are to be convex surface, can carry out internal reflection and scattering at inside surface 123 via light, are suitable for making illumination light to pass through reflection and scattering and concentrate towards object 30 and form one around hot spot.
Below will introduce an embodiment who reduces by lens, and please refer to Fig. 9, and Figure 9 shows that the cross-sectional schematic of the optical sensing apparatus of the 6th embodiment, the element in Fig. 9 is similar to the element of Fig. 8, so the identical identical or similar structure of symbology wherein.The present embodiment and the 3rd embodiment difference are in the electronic installation 1030 of the present embodiment, remove the lens 19 of the 5th embodiment, so optical sensing apparatus 10 still can obtain good capture effect by light harvesting spare 12, and this moment, light can carry out internal reflection and scattering at inside surface 123.
Among the disclosed embodiment, the shape and the intensity system that center on hot spot decide according to the distance between shape, material, light harvesting spare and the object of light harvesting spare and the kind of light according to the present invention.
According to the disclosed optical sensing apparatus of above-mentioned the present embodiment, to can be applicable in the electronic installation, as: optical mouse, scanning machine, multifunction printer and optical fingerprint identification system etc., and optical sensing apparatus is in order to the optical imagery of acquisition, induction one object or the effect of image variation in these electronic installations.In addition, in one embodiment, the configurable a plurality of optical sensing apparatus of an electronic installation, in other embodiments, light harvesting spare can be a groove shapes (not illustrating); A plurality of optical sensing apparatus are to can be arrayed (not illustrating).
Comprehensively above-mentioned, the disclosed optical sensing apparatus according to the present invention, when the illuminating part projection illumination light time, illumination light is concentrated convergence by light harvesting spare, light harvesting spare is guided illumination light again makes illumination light form one around hot spot on object, and after above-mentioned illumination light light-self-collecting spare penetrates, it is coaxial with the capture path of induction pieces that illumination light is projected to the transmission path of object, again the illumination light self-luminous piece concentrate penetrate to the travel path of object short than prior art, therefore by bright and large-scale distribution of light, object obtains how bright light source, and makes induction pieces obtain best object image.In other words, if wish to get the existing identical capture effect of optical sensing apparatus, the disclosed optical sensing apparatus of the present invention only need change the outfit, and light source is weak, lower-cost illuminating part, so can increase optical sensing apparatus service time and reduce cost.In addition, the disclosed optical sensing apparatus according to the present invention, because after illumination light light-self-collecting spare is concentrated and is penetrated, it is coaxial with the capture path of induction pieces that illumination light is projected to the transmission path of object, so optical sensing apparatus only needs the distance between inching and the object, induction pieces can receive the light source of different wave length (color).Therefore, it is longer that the disclosed optical sensing apparatus of the present embodiment has solved the light emission path of existing optical sensing apparatus, and produce that optical sensing apparatus sensing article image effect is not good, power consumption, volume is excessive and during the displacement light sources with different wavelengths, namely need redesign another optical sensing apparatus, therefore, according to the present invention the optical sensing apparatus of disclosed embodiment reach volume-diminished, improve light source irradiation usefulness, brightness, to effects such as when power savings.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. an optical sensing apparatus is characterized in that, comprising:
One illuminating part is in order to launch an illumination light;
One light harvesting spare, in order to receive this illumination light and to make this illumination light concentrate convergence to penetrate, afterwards, this illumination light is projected to an object along a transmission path, penetrates after an imaging of this object reflection enters this light harvesting spare; And
One induction pieces has a capture path, this induction pieces this imaging in order to penetrate from this light harvesting spare via this capture path acquisition;
Wherein, this transmission path is coaxial with this capture path.
2. optical sensing apparatus according to claim 1 is characterized in that, this illumination light is projeced into this object via this transmission path and forms one around hot spot.
3. optical sensing apparatus according to claim 1, it is characterized in that, this light harvesting spare has an incident section and a light out part, this incident section is between this induction pieces and this light out part, this incident section is in order to this illumination light of receiving this illuminating part and injecting and this imaging is penetrated to this induction pieces, this light out part with so that this illumination light ejaculation to this object and receive this imaging.
4. optical sensing apparatus according to claim 3, it is characterized in that, this incident section has an entrance port and an exit portal, this illumination light that this entrance port is injected in order to receive this illuminating part, this exit portal is used so that this imaging penetrates to this induction pieces, when this object reflected this imaging and enters this light harvesting spare, this imaging sequentially passed this light out part and this exit portal and by this induction pieces acquisition.
5. optical sensing apparatus according to claim 3 is characterized in that, the width of this incident section is greater than the width of this light out part.
6. optical sensing apparatus according to claim 1, it is characterized in that, this light harvesting spare comprises an incident section, one light out part and a light harvesting annulated column, this incident section has an entrance port and an exit portal, this light out part has a light inlet and a light-emitting window, this light harvesting annulated column is between this entrance port and this light-emitting window, this illumination light that this entrance port is injected in order to receive this illuminating part, the inside surface of this light harvesting annulated column makes this illumination light concentrate convergence, this light-emitting window in order to this illumination light of penetrating this light harvesting annulated column and collecting to this object, this light inlet is in order to receive this imaging via this object reflection, and this exit portal is in order to penetrate this imaging to this induction pieces.
7. optical sensing apparatus according to claim 6 is characterized in that, this entrance port is around this exit portal, and this light-emitting window is around this light inlet, and the width of this incident section is greater than the width of this light out part.
8. optical sensing apparatus according to claim 1 is characterized in that, this optical sensing apparatus also comprises a lightguide, is arranged between this illuminating part and this light harvesting spare this this light harvesting spare of illumination light directive that this lightguide penetrates in order to guide this illuminating part.
9. optical sensing apparatus according to claim 1, it is characterized in that, this optical sensing apparatus also comprises an optical element, be arranged between this induction pieces and this object, this optical element is with so that this imaging is concentrated into picture after this light harvesting spare penetrates, and this induction pieces of directive, this capture path of this induction pieces and a light shaft coaxle of this optical element.
10. optical sensing apparatus according to claim 1, it is characterized in that, this transmission path is for after this illumination light penetrates this light harvesting spare, and this illumination light is projected to the light travel path of this object, and this capture path is projected to the light travel path of this induction pieces for this imaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100686375A CN103308924A (en) | 2012-03-14 | 2012-03-14 | Optical sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100686375A CN103308924A (en) | 2012-03-14 | 2012-03-14 | Optical sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103308924A true CN103308924A (en) | 2013-09-18 |
Family
ID=49134346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100686375A Pending CN103308924A (en) | 2012-03-14 | 2012-03-14 | Optical sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103308924A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808815A (en) * | 2014-01-28 | 2015-07-29 | 昆盈企业股份有限公司 | Pen-shaped optical sensing device |
| TWI548269B (en) * | 2014-06-12 | 2016-09-01 | 宏達國際電子股份有限公司 | Method, electronic apparatus, and computer readable medium for processing reflection in image |
| CN109375231A (en) * | 2018-09-25 | 2019-02-22 | 维沃移动通信有限公司 | A kind of Depth Information Acquistion device, terminal device and depth information acquisition method |
| CN109889705A (en) * | 2018-07-13 | 2019-06-14 | 松翰科技股份有限公司 | Optical image sensing mould group |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804770A (en) * | 2005-01-13 | 2006-07-19 | 天瀚科技股份有限公司 | Optical path and penpoint coaxial optical pen |
| US20080018600A1 (en) * | 2006-07-21 | 2008-01-24 | Kye Systems Corp. | Optical input device |
| CN102217924A (en) * | 2010-04-15 | 2011-10-19 | 富士胶片株式会社 | Light source device and endoscope apparatus using the same |
-
2012
- 2012-03-14 CN CN2012100686375A patent/CN103308924A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804770A (en) * | 2005-01-13 | 2006-07-19 | 天瀚科技股份有限公司 | Optical path and penpoint coaxial optical pen |
| US20080018600A1 (en) * | 2006-07-21 | 2008-01-24 | Kye Systems Corp. | Optical input device |
| CN102217924A (en) * | 2010-04-15 | 2011-10-19 | 富士胶片株式会社 | Light source device and endoscope apparatus using the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104808815A (en) * | 2014-01-28 | 2015-07-29 | 昆盈企业股份有限公司 | Pen-shaped optical sensing device |
| CN104808815B (en) * | 2014-01-28 | 2018-02-16 | 昆盈企业股份有限公司 | Pen type optical sensing apparatus |
| TWI548269B (en) * | 2014-06-12 | 2016-09-01 | 宏達國際電子股份有限公司 | Method, electronic apparatus, and computer readable medium for processing reflection in image |
| CN109889705A (en) * | 2018-07-13 | 2019-06-14 | 松翰科技股份有限公司 | Optical image sensing mould group |
| CN109375231A (en) * | 2018-09-25 | 2019-02-22 | 维沃移动通信有限公司 | A kind of Depth Information Acquistion device, terminal device and depth information acquisition method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207851852U (en) | Electronic device and its taken module | |
| CN1293381C (en) | Method and device for inspecting defect of sheet-shaped transparent body | |
| TWI578049B (en) | Optical electronic coupled module | |
| CN104819405A (en) | Luminous module and visual inspection system using the same | |
| JPH11312898A (en) | Electronic component mounting device | |
| US6285782B1 (en) | Mounting apparatus, recognition device and recognition method for electronic component | |
| CN103308924A (en) | Optical sensing device | |
| TW201009255A (en) | Light source device, lighting device, and display device | |
| WO2011052018A1 (en) | Illumination optical system of image capturing device | |
| CN101221088A (en) | Glass lens optical reflectivity testing apparatus and glass lens assembling equipment | |
| CN203297986U (en) | Combined illuminating device applied to computer vision | |
| US11629842B2 (en) | Selectively frosted optical element for beam shaping | |
| CN107845627A (en) | More proximity detection optical sensors | |
| TW201312192A (en) | Filter lens light source module for optical image capturing device and the image capturing device | |
| CN102539432A (en) | Optical measuring device | |
| CN109919103A (en) | Biological characteristic detects mould group and backlight module and electronic device | |
| CN101996003A (en) | Light guide module, optical touch module, and method thereof | |
| CN101900579A (en) | Lighting device of automatic optical detection system | |
| TWI495850B (en) | Optical sensing device | |
| CN101576594B (en) | Automatic optical checking equipment and light source module thereof | |
| CN104768809A (en) | Illumination for the detection of raindrops on a window by means of a camera | |
| KR0180803B1 (en) | Illuminating apparatus & assembling and inspecting apparatus of electronic parts using thereof | |
| CN102540317B (en) | Light guide element and high-uniformity high-brightness light source module | |
| CN2874535Y (en) | Light guide colume | |
| CN203608486U (en) | Panel mechanism and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |