CN207037686U - Optical imaging device - Google Patents
Optical imaging device Download PDFInfo
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- CN207037686U CN207037686U CN201720344709.2U CN201720344709U CN207037686U CN 207037686 U CN207037686 U CN 207037686U CN 201720344709 U CN201720344709 U CN 201720344709U CN 207037686 U CN207037686 U CN 207037686U
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- 238000012634 optical imaging Methods 0.000 title claims abstract description 42
- 230000005855 radiation Effects 0.000 claims abstract description 160
- 238000003384 imaging method Methods 0.000 claims abstract description 39
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 238000002314 autoradiolysis reaction Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 9
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- 238000012545 processing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
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Abstract
A kind of optical imaging device is the utility model is related to, including:Radiation source, directing radiation device, boresight unit, radiation sensor；The radiation source, directing radiation device, boresight unit, radiation sensor are connected by light path；When the optical imaging device is moving in substrate, the radiation source, which sends radiation light radiation, has position encoded imaging region；The radiant light in directing radiation device autoradiolysis in the future source is directed to the imaging region；The boresight unit includes the first speculum and condenser lens；The radiation for coming from the imaging region is changed direction by first speculum；The radiation for coming from the imaging region is focused on the radiation sensor by the condenser lens；The radiation sensor receives the reflected light from the imaging region, so as to obtain the position encoded image of the imaging region.
Description
Technical field
It the utility model is related to optical recognition field, more particularly to a kind of optical imaging device.
Background technology
With the rapid development of information technology, people are increasingly commonly produced, handle, exchange and propagated using computer
Various forms of information.Information technology gradually changes the traditional habits and customs of people.Traditional enters running hand using paper and pen
The mode write can not carry out information process-, therefore can not meet the needs of people.
In the prior art, certain type of information is embedded in such as paper page, board or equivalent using coding pattern
Substrate in.For example, can be the embedded machine for being used to extend substrate function of human-readable graphical information supplement in substrate
Readable information.This embedding information can be included for graphical information, order, supplemental text or image, hyperlink, absolute position
Deng the file data completely or partially rebuild.Then, known using the scanner of programming, facsimile machine, camera or digital pen etc.
Other equipment can reads, rebuild and using the local information being embedded into substrate.But when between identification equipment and substrate
When angle and orientation change, the quality of the coded image got can be affected, and the problem of identification is wrong easily occur,
It has impact on the accuracy that input information computerization reproduces.
Utility model content
The purpose of this utility model is to provide a kind of optical imaging device, with solve in the prior art due to identification equipment with
Angle and orientation between substrate change, the problem of causing to influence identification accuracy.
To achieve the above object, the utility model provides a kind of optical imaging device, and described device includes：Radiation source,
Directing radiation device, boresight unit, radiation sensor；
The radiation source, directing radiation device, boresight unit, radiation sensor are connected by light path；
When the optical imaging device is moving in substrate, the radiation source send radiation light radiation have it is position encoded
Imaging region；The radiant light in directing radiation device autoradiolysis in the future source is directed to the imaging region；The boresight unit
Including the first speculum and condenser lens；The radiation for coming from the imaging region is changed direction by first speculum；Institute
State condenser lens and the radiation for coming from the imaging region is focused on into the radiation sensor；The radiation sensor, which receives, to be come
From the reflected light of the imaging region, so as to obtain the position encoded image of the imaging region.
Preferably, the directing radiation device includes the second speculum, the radiation in the second speculum autoradiolysis in future source
Change direction to reach the imaging region.
Preferably, the position encoded image is carried out decoding process by the processor, so as to obtain the optical imagery
The positional information that device moves in substrate.
Preferably, the positional information is sent to external equipment by the communication unit so that the external equipment according to
The positional information generates movement locus.
Preferably, the optical imaging device also includes controller, the controller and the radiation source, directing radiation
Device, radiation sensor are connected with processor, send and control to the radiation source, directing radiation device, radiation sensor and processor
Signal processed, control unlatching/closing of the radiation source, directing radiation device, radiation sensor and processor.
Preferably, the optical imaging device also includes feeler, is connected with the controller, detects the light
Activation signal caused by imaging device and the substrate contact is learned, and sends the controller, so that the controller is according to institute
Activation signal generation control signal is stated, so as to control the radiation source, directing radiation device, radiation sensor and processor.
Preferably, the optical imaging device also includes vibrator, is connected with the processor, according to the place of processor
Manage result generation vibration signal.
The optical imaging device that the utility model embodiment provides, the radiation in autoradiolysis in future source are directed to imaging region,
The light that imaging region reflects is directed to radiation sensor, so as to which the quality for the position encoded image for ensureing to get meets identification
Standard, improve and identify position encoded accuracy.
Brief description of the drawings
Fig. 1 is the structural representation for the optical imaging device that the utility model embodiment provides；
Fig. 2 is the application schematic diagram for the optical imaging device that the utility model embodiment provides.
Embodiment
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Substrate in technical solutions of the utility model is specifically included with position encoded writing paper, blank, electronical display
Screen etc..According to the position encoded change in location information that can determine optical imaging device when being moved in substrate, after treatment
Form movement locus.
The structural representation for the optical imaging device that Fig. 1 the utility model embodiments provide.As shown in figure 1, including：Radiation
Source 1, directing radiation device 2, boresight unit 3, radiation sensor 4.
Radiation source 1, directing radiation device 2, boresight unit 3, radiation sensor 4 are connected by light path.It is specific at one
In embodiment, radiation source 1, directing radiation device 2, boresight unit 3, radiation sensor 4 are arranged on printing board PCB.
In a specific embodiment, the optical imaging device in the utility model can be digital pen, such as Fig. 2 institutes
Show, the nib of digital pen 21 gets position encoded image when being moved on the writing surface 22 with position encoded pattern, by position
Put and the movement locus that nib moves in writing surface is obtained after coded image is decoded, so as to realize the electronization of written handwriting
Processing.
When optical imaging device is moving in substrate, radiation source 1, which sends radiation light radiation, has position encoded imaging
Region.
Specifically, radiation source 1 may be mounted on PCB and be connected electrically.Radiation source 1 may include such as light-emitting diodes
(LED) or laser diode are managed, for being located at radiation sensor by lighting radiation (such as infrared light) come illuminate substrate
The visual field in region.
The radiant light in directing radiation device autoradiolysis in 2 future source is directed to imaging region.
Alternatively, directing radiation device 2 includes the second speculum, and the radiation for autoradiolysis in future source changes direction to reach
Imaging region.
Directing radiation device 2 can be made up of one piece of plastic material, such as polymethyl methacrylate, and poly- carbonic acid is cruel, polyphenyl
Ethene, nylon or polyethers alum.
In a specific embodiment, directing radiation device 2 includes one for example, by the gluing bottom that can be connected on PCB
Face.Dropped the caused mechanical shock on floor by pen for example, keeping out if desired, bottom surface, which can include, to be used to provide big company
Connect flange of the region to PCB.Flange is set the connection for being only used for ensuring directing radiation device 2 rather than transmitted from radiation source 1
Radiation.
Directing radiation device 2 includes a radiation source receiving slit, and it is set above through hole in the pcb.Receiving slit is in its bottom
Inlet face with plane, the radiation from radiation source 1 enter directing radiation device 2 by the inlet surface.
Directing radiation device 2 also has the minute surface being arranged on the receiving slit of radiation source 1.The mirror of metalized in outside
Face is used for providing reflecting surface.Radiation changes direction in minute surface so that parallel in the optical axis of the radiation source 1 in minute surface downstream along light path
In PCB surface.
Directing radiation device 2 is shaped to tubulose, for the guiding radiation after reflection on minute surface in radiation.Radiation is logical
Cross exit surface and leave directing radiation device 2, exit surface is arranged on the end of tubular form.Except inlet surface and exit surface it
Outer all surface can be metallized processing, but radiation is controlled and left only by exit surface.It is any hit it is other
Therefore the internal radiation of wall will be reflected back in directing radiation device 2.
The tubular form of directing radiation device 2 can have constant cross section.The cross section of tubular form can be designed as
Produce the shape required by irradiation zone.In addition, tubular form is longer, the radiation that directing radiation device 2 has been launched will be more uniform.
However, it is possible to short tubular form is kept enough so that most of to have launched before directing radiation device 2 is left
Radiation only will be reflected once.On the direction parallel with PCB surface, the minimum widith of the cross section of tubular form is main
Determined by the size of radiation source receiving slit.The cross section of tubular form, which should keep as small as possible, makes the radial dimension of digital pen
Reduce, while the radiation launched should irradiate sufficiently large region.For this purpose, the tubular form of directing radiation device 2 can be with
It is configured to have asymmetric cross section.
The light that imaging region reflects is directed to radiation sensor by boresight unit 3.
Specifically, boresight unit 3 includes the first speculum and condenser lens, the first speculum is used to that imaging area will to be come from
The radiation in domain changes direction；Condenser lens is used to the radiation for coming from imaging region focusing on radiation sensor.Boresight unit 3
Also include aperture diaphragm, for reducing the amount of radiation by radiation sensor.
In a specific embodiment, boresight unit 3, which is installed on PCB, surrounds radiation sensor 4.Boresight unit 3
With sensor pockets groove, for receiving the plug-in unit for carrying radiation sensor 4.Therefore, the radiation only propagated by boresight unit 3 will
Reach radiation sensor 4.Boresight unit 3 includes 3 speculums, and the speculum is installed in the top of radiation sensor 4.Speculum
It is provided for coming from the radiation reflective of writing surface to radiation sensor 4.Minute surface needs not be plane, but slight
What arc curve mirror also can be achieved on.
Boresight unit 3 is also comprising the condenser lens swum on the mirror along light path.Condenser lens is arranged to pass through reflection
Mirror focuses on the radiation from writing surface on radiation sensor 4.Condenser lens is arranged in boresight unit 3 so that is focused on
The distance between lens and radiation sensor 4 are shorter than the distance between condenser lens and writing surface, thus on the writing surface into
As region increases.
Boresight unit 3 also includes aperture diaphragm.Aperture diaphragm reduces the amount of radiation for leading to radiation sensor 4.If hole
The hole increase of footpath diaphragm, more radiation lead to radiation sensor 4, influence imaging effect.
In a specific embodiment, lens and speculum can be realized with an optical element.Optical element is specific
Can be as the solid optical element of imaging prism.Imaging prism can be made up of plastic material, such as poly-methyl methacrylate
Extremely, poly- carbonic acid is cruel, polystyrene, nylon or polyethers alum.Prism has one for example to pass through gluing, buckle, clamping or supersonic welding
The base being connected in succession on PCB.The bag groove of radiation sensor 4 is arranged on base.Surface inside the bag groove of prism can be with
It is plane or slight arc, and forms the radiation exit surface towards radiation sensor 4.Prism also has a minute surface, it
It is arranged on the top of bag groove and favours base.Minute surface is metallized processing in outside to provide reflecting surface.Therefore, in minute surface
On radiation incident out of prism will be reflected on minute surface.Alternatively, glass mirror is glued on prism by optical cement.Prism
Part with the basic tubulose for extending from minute surface and being supported at least in part by base.From the tubular part direction of minute surface extension
The geometrical plane of base is slightly slanted.Thus, optical axis can tilt to the longitudinal axis of digital pen, thus, it is possible to make close to pen
The regional imaging of point.The near-end of tubular part extends beyond base.The end forms the inlet surface of prism.Inlet surface includes
One lens surface and be arranged to from imaging region receive radiate.Aperture diaphragm can be used as and be arranged on imaging rib at inlet surface
Calotte on the tubular part of mirror is realized.Aperture diaphragm have one be arranged on the hole before inlet surface with allow to radiate into
Enter prism.Aperture diaphragm can be made of plastic material and be glued or be snapped on prism.Aperture diaphragm can be selectively
By using for example for other surfaces of prism radiation transferable material cover inlet surface should not transmitted radiation part
To set.
Radiation sensor 4 receives the reflected light from imaging region, so as to obtain the position encoded image of imaging region, and
It is sent to processor.
Radiation sensor 4 can be specifically that (CMOS is partly led by two-dimensional CCD (charge-coupled device) or CMOS
Body) sensor, the sensor be triggered and with fixed rate or variable bit rate (typically about 70 to 100Hz) capture images.
In addition, optical imaging device also includes processor, position encoded image is subjected to decoding process, so as to obtain optics
The positional information that imaging device moves in substrate.
Processor can be responsible for the difference in functionality in pen, such as image procossing, position decoding, spectrum assignment, user feedback
And power management, and can be by the microprocessor of central processing unit CPU, such as digital signal processor DSP, field-programmable
Gate array FPGA, application-specific IC ASI C, some other programmable logic dress of discrete analysis and digital unit
Put, or some combinations of the above are implemented.Processor may include one or more submodules, and one or more submodules can be by
Implement on one or more hardware componenies.
Optical imaging device also includes communication unit, specifically for positional information is sent into external equipment, so that outside
Equipment generates movement locus according to positional information.
Communication unit includes wired or wireless short range communication part, for positional information to be sent into external equipment, so as to
Realize that the digitlization of written handwriting is shown.
Positional information can be sent to neighbouring or remote equipment by communication unit, such as computer, mobile phone, PDA, network
The transmission such as server or exposure data.Communication unit may include the part for wired or wireless junction service.For example, USB,
RS232, wireless radio transmission, Infrared Transmission, ultrasound-transmissive, inductive coupling etc..Communication unit may include one or more submodules
Block, one or more submodules can be embodied on one or more hardware componenies.
In addition, optical imaging device also includes controller, and to radiation source, directing radiation device, radiation sensor and processing
Device is connected, and sends control signal to radiation source, directing radiation device, radiation sensor and processor, control radiation source, radiation are led
Unlatching/closing to device, radiation sensor and processor.
Alternatively, optical imaging device also includes feeler, is connected with controller, detection optical imaging device and
Activation signal caused by substrate contact, and controller is sent, so that controller generates control signal according to activation signal, so as to control
Radiation source, directing radiation device, radiation sensor and processor processed.
Specifically, pressure signal, optical signalling, resistance caused by feeler detection digital pen and writing surface contact
One kind in antinoise signal, induced signal, generation activation signal are sent to controller.
In a specific embodiment, feeler with detect when pen be employed and (start writing) in dielectric surface and from
Dielectric surface lifts (first stroke of a Chinese character), and allows to determine applying power.Feeler can be operatively connected to digital pen
Pen core.The stroke of digital pen can be limited by starting writing with the subsequent first stroke of a Chinese character.Starting writing can occur in a same position with the first stroke of a Chinese character, from
And a stroke can include single position or a pair of coordinates.Output based on feeler, controller control various pieces,
To capture the image started writing between the first stroke of a Chinese character.
Alternatively, optical imaging device also includes vibrator, is connected with processor, is given birth to according to the result of processor
Into vibration signal.
In a specific embodiment, vibrator is connected on the control device on PCB.Vibrator can be vibrated with right
User, which gives, to feed back.For example, when digital pen has been detected by user and has chosen a check box, vibrator can vibrate with
Issue the user with signal.In addition, when digital pen detects a mistake, vibrator can continuously vibrate, such as when digital pen does not have
Have when identifying pattern to be identified on a writing surface.
In addition, optical imaging device also includes wave filter, the wavelength of the short radiant light of absorptance near-infrared ripple wavelength.Wavelength
Filter is suitable to remove unwanted wavelength.In a specific embodiment, wave filter can be two lighting sources, and this two
Individual lighting source can optionally or alternately be activated with reduce due to mirror-reflection and there may be the problem of.Another
In one embodiment, wave filter is specially one or more polarizers to remove specular light.
Optical imaging device of the present utility model also includes power module, and power supply can be provided by battery, and battery can be by
Charge repeatedly.In order to save battery time, digital pen may include power management module to control the power supply status of pen.It is in addition, electric
Source module can also be connected by USB interface with external power source realizes power supply.
The optical imaging device that the utility model embodiment provides, the radiation in autoradiolysis in future source are directed to imaging region,
The light that imaging region reflects is directed to radiation sensor, so as to which the quality for the position encoded image for ensureing to get meets identification
Standard, improve and identify position encoded accuracy.
Professional should further appreciate that, each example described with reference to the embodiments described herein
Unit and algorithm steps, it can be realized with electronic hardware, computer software or the combination of the two, it is hard in order to clearly demonstrate
The interchangeability of part and software, the composition and step of each example are generally described according to function in the above description.
These functions are performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.
Professional and technical personnel can realize described function using distinct methods to each specific application, but this realization
It is not considered that exceed the scope of the utility model.
The method that is described with reference to the embodiments described herein can use hardware, computing device the step of algorithm
Software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only storage
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, it is all within the spirit and principles of the utility model, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of the utility model.
Claims (7)
1. a kind of optical imaging device, it is characterised in that described device includes:Radiation source, directing radiation device, boresight unit, spoke
Penetrate sensor；
The radiation source, directing radiation device, boresight unit, radiation sensor are connected by light path；
When the optical imaging device is moving in substrate, the radiation source send radiation light radiation have it is position encoded into
As region；The radiant light in directing radiation device autoradiolysis in the future source is directed to the imaging region；The boresight unit includes
First speculum and condenser lens；The radiation for coming from the imaging region is changed direction by first speculum；It is described poly-
The radiation for coming from the imaging region is focused on the radiation sensor by focus lens；The radiation sensor receives and comes from institute
The reflected light of imaging region is stated, so as to obtain the position encoded image of the imaging region.
2. optical imaging device according to claim 1, it is characterised in that the directing radiation device includes the second reflection
Mirror, the radiation in the second speculum autoradiolysis in future source change direction to reach the imaging region.
3. optical imaging device according to claim 1, it is characterised in that the optical imaging device also includes processing
Device, the position encoded image is carried out decoding process by the processor, so as to obtain the optical imaging device in substrate
Mobile positional information.
4. optical imaging device according to claim 3, it is characterised in that the optical imaging device also includes communication unit
The positional information is sent to external equipment by member, the communication unit, so that the external equipment is according to the positional information
Generate movement locus.
5. optical imaging device according to claim 1, it is characterised in that the optical imaging device also includes control
Device, the controller are connected with the radiation source, directing radiation device, radiation sensor and processor, to the radiation source, spoke
Penetrate guider, radiation sensor and processor and send control signal, control the radiation source, directing radiation device, radiation sensor
With unlatching/closing of processor.
6. optical imaging device according to claim 5, it is characterised in that the optical imaging device also includes contact and passed
Sensor, it is connected with the controller, detects activation signal caused by the optical imaging device and the substrate contact, concurrently
The controller is sent, so that the controller generates control signal according to the activation signal, so as to control the radiation source, spoke
Penetrate guider, radiation sensor and processor.
7. optical imaging device according to claim 3, it is characterised in that the optical imaging device also includes vibration
Device, it is connected with the processor, vibration signal is generated according to the result of processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720344709.2U CN207037686U (en) | 2017-04-02 | 2017-04-02 | Optical imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720344709.2U CN207037686U (en) | 2017-04-02 | 2017-04-02 | Optical imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207037686U true CN207037686U (en) | 2018-02-23 |
Family
ID=61473173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720344709.2U Active CN207037686U (en) | 2017-04-02 | 2017-04-02 | Optical imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207037686U (en) |
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2017
- 2017-04-02 CN CN201720344709.2U patent/CN207037686U/en active Active
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