CN104808815B - Pen type optical sensing apparatus - Google Patents
Pen type optical sensing apparatus Download PDFInfo
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- CN104808815B CN104808815B CN201410041824.3A CN201410041824A CN104808815B CN 104808815 B CN104808815 B CN 104808815B CN 201410041824 A CN201410041824 A CN 201410041824A CN 104808815 B CN104808815 B CN 104808815B
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Abstract
The present invention discloses a pen type optical sensing apparatus, includes a penholder, a circuit board assemblies and an optical induction device.Penholder is along an axially extending setting.Optical induction device is located at one end of penholder and is electrically connected with the circuit board assemblies being located in penholder.Optical induction device includes an illuminating part, a light guide, a lens and an induction pieces.Illuminating part launches a light.Light guide concentrates guiding light to be incident upon an object, the reflected light of object reflection one along an exposure pathways.Light guide surrounds lens, lens guiding reflected light.Induction pieces capture the reflected light from lens via its capture path.Exposure pathways tend to be coaxial with capture path, can obtain the image of maintaining uniform illumination and imaging clearly.In this way, pen type optical sensing apparatus can neatly use when tilting.
Description
Technical field
The present invention relates to a kind of pen type optical sensing apparatus, especially with regard to one kind there is high dip to use angle and height
The pen type optical sensing apparatus of the quality of image.
Background technology
With the development of science and technology dealer develops a variety of optical induction devices, and applied in different electronic installations.Lift
For example, it can be applicable to optical mouse, scanning machine, multi-function printer and optical fingerprint identification system etc., and in these electricity
Optical induction device in sub-device is the optical imagery or image variation for capturing or sensing an object.
In general, user operates electronic installation, such as a desktop PC by an optical mouse.It is existing
An optical induction device is included in optical mouse, user can hold optical mouse, and drive optical mouse to be moved up in desktop
It is dynamic.The image that optical induction device measures its light to the object launched makes a variation, and then changes and be shown in the one of electronic installation
Cursor on display.In this way, user can adjust the order or operation for this computer.However, using optics mouse
Timestamp, user generally requires adjustment and mobile wrist, to move mouse.In this way, when user uses optical mouse for a long time
When, it is necessary to constantly adjustment and mobile wrist, can easily cause user's wrist ache or it is uncomfortable.
Then, dealer develops a kind of pen-type mouse, and its optical induction device is arranged at one end of a penholder, and optics sense
Device is answered to include a luminescence component and an inductor.Luminescence component is located at the side in penholder, and inductor is located in penholder
Opposite side.When luminescence component launches an incident ray in an object（A such as desktop）When, the normal of incident ray and desktop
The incidence angle more than zero degree is formed, object produces reflection light, and then reflection light reflexes to inductor, and inductor is for shadow
As being handled, then by this video conversion into an electronic signal, and pen-type mouse is supplied to carry out subsequent treatment.Wherein, reflected light with
The normal of desktop produces the angle of reflection more than zero degree, and incidence angle is equal to angle of reflection.In general, user is gripping pen type
During mouse, often have because people is different using habit, penholder is gripped with the various angles for favouring desktop.When prior art
Pen-type mouse is with various inclinations angle in use, generating brightness disproportionation and image is unintelligible（Modulus function modulus
（Modulation Transfer Function, MTF）It is worth too low) the problems such as, and induction pieces can not be captured bright light
And the image of imaging clearly, and then the sensing function of pen-type mouse is greatly reduced, reduce the sensitivity of pen-type mouse.
The content of the invention
It is an object of the invention to provide a kind of pen type optical sensing apparatus, so as to solving above-mentioned brightness disproportionation, image not
The problems such as clear and muting sensitivity.
To achieve the above object, the present invention provides a kind of pen type optical sensing apparatus, includes a penholder, a circuit board assemblies
An and optical induction device.Penholder is along an axially extending setting.Circuit board assemblies are in penholder.Optical induction device is located at
One end of penholder is simultaneously electrically connected with circuit board assemblies.Optical induction device include an at least illuminating part, a light guide, a lens with
And induction pieces.An at least illuminating part is launching a light.Light guide is concentrating guiding light along an exposure pathways to one
Object, the reflected light of object reflection one.Lens are guiding reflected light.Induction pieces have a capture path, induction pieces to via
Capture path captures the reflected light from object (such as a desktop), and exposure pathways tend to be coaxial with capture path.
Wherein, the axial direction accompanies an acute angle with the capture path.
Wherein, the light guide has an incident section relative to each other and an exit portion and penetrates the incident section and the outgoing
One through hole in portion, the through hole have one first opening and one second opening, and at least an illuminating part is located at the incident section for this
Place, the induction pieces to should first opening.
Wherein, the incident section of the light guide has an incidence surface, and the exit portion has an exiting surface, and this is at least one luminous
Part faces the incidence surface, and the light emitted by an at least illuminating part enters the light guide and from the exiting surface from the incidence surface
Project.
Wherein, the area of the incidence surface is less than the area of the exiting surface.
Wherein, the width of the incident section is more than the width of the exit portion.
Wherein, when an at least illuminating part quantity be two when, two illuminating part be respectively arranged at the light guide this enter
Penetrate the opposite end in portion.
Wherein, a written portion is further included, is arranged at outside the optical induction device, the written portion has an outlet, corresponds to
Second opening of the through hole.
Wherein, there is an accommodation space in the penholder, the circuit board assemblies are arranged in the accommodation space, the optical sensor
Device is located at one end of the accommodation space.
Wherein, the circuit board assemblies include a power module and a radio receiving transmitting module, and this at least an illuminating part is
One light-emitting diode (LED) module.
According to the invention discloses pen type optical sensing apparatus in, tend to be coaxial by exposure pathways and capture path.Therefore
And when penholder is tilted relative to object wide-angle in use, pen type optical sensing apparatus still can obtain brightness uniformity and clear
Image, and then improve pen type optical sensing apparatus sensitivity.Therefore favoured in pen type optical sensing apparatus on object
（A such as desktop）In use, pen type optical sensing apparatus flexibly can be used swimmingly, pen type optical sensing apparatus can be more improved
Operating angle scope.In this way, the present invention solve in the prior art pen type optical sensing apparatus in wide-angle use range,
Because brightness disproportionation and imaging are bad（Mtf value is low) and cause to use insensitive problem.
Furthermore accompanying an acute angle compared to incident light in the prior art and reflected light makes volume become big, and the pen of this case
The transmission path of the light of type optical sensing apparatus and the capture path of reflected light tend to be coaxial, therefore volume can be made significantly to reduce.
In some embodiments, the axial direction of penholder accompanies an acute angle with capture path, can more cause penholder relative to object
Tilt to wide-angle in use, pen type optical sensing apparatus more can obtain brightness uniformity and clearly image.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 is the schematic diagram according to a pen type optical sensing apparatus of one embodiment of the invention.
Fig. 2 is the close-up schematic view according to the pen type optical sensing apparatus of one embodiment of the invention.
Fig. 3 is the cut-away illustration according to the optical induction device of one embodiment of the invention.
Fig. 4 is the cut-away illustration according to an optical induction device of another embodiment of the present invention.
Fig. 5 A are the intensity map according to a pen type optical sensing apparatus of one embodiment of the invention.
Fig. 5 B are intensity maps of Fig. 5 A along Y-axis coordinate 0.
Fig. 5 C are intensity maps of Fig. 5 A along X-axis coordinate 0.
Fig. 6 A are the intensity map of a pen type optical sensing apparatus of prior art.
Fig. 6 B are intensity maps of Fig. 6 A along Y-axis coordinate 0.
Fig. 6 C are intensity maps of Fig. 6 A along X-axis coordinate 0.
Fig. 7 A be according to axially pressed from both sides in the pen type optical sensing apparatus of one embodiment of the invention with capture path 30 degree and
55 degree of definition is axially pressed from both sides with object normal（MTF）Sunykatuib analysis figure.
Fig. 7 B press from both sides 55 degree of definition for axial direction in a pen type optical sensing apparatus of prior art with object normal（MTF）
Sunykatuib analysis figure.
Fig. 8 A are the intensity map of Fig. 7 A pen type optical sensing apparatus.
Fig. 8 B are intensity maps of Fig. 8 A along Y-axis coordinate 0.
Fig. 8 C are intensity maps of Fig. 8 A along X-axis coordinate 0.
Fig. 9 A are the intensity map of Fig. 7 B pen type optical sensing apparatus.
Fig. 9 B are intensity maps of Fig. 5 A along Y-axis coordinate 0.
Fig. 9 C are intensity maps of Fig. 5 A along X-axis coordinate 0.
Figure 10 A are that penholder axially presss from both sides with capture path in the pen type optical sensing apparatus according to another embodiment of the present invention
45 degree and the definition of 70 degree of axial direction and object normal folder（MTF）Sunykatuib analysis figure.
Figure 10 B press from both sides 70 degree of definition for axial direction in another pen type optical sensing apparatus of prior art with object normal
（MTF）Sunykatuib analysis figure.
Figure 11 A are the intensity map of the pen type optical sensing apparatus of another embodiment of the present invention.
Figure 11 B are intensity maps of Figure 11 B along Y-axis coordinate 0.
Figure 11 C are intensity maps of Figure 11 A along X-axis coordinate 0.
Figure 12 A are the intensity map of another pen type optical sensing apparatus of prior art.
Figure 12 B are intensity maps of Figure 12 A along Y-axis coordinate 0.
Figure 12 C are intensity maps of Figure 12 A along X-axis coordinate 0.
Wherein, reference：
1 pen type optical sensing apparatus
10 penholders
11 first ends
12 second ends
13 accommodation spaces
20 circuit board assemblies
21 power modules
22 radio receiving transmitting modules
30 optical induction devices
31 illuminating parts
32 light guides
321 incident sections
321a incidence surfaces
322 exit portion
322a exiting surfaces
323 through holes
323a first is open
323b second is open
33 lens
331 thing sides
332 image side surfaces
34 induction pieces
35 micro-circuit boards
40 written portions
41 fixed parts
42 disassembling parts
421 outlets
A axial directions
C captures path
Θ acute angles
Embodiment
The detailed features and advantage of the narration present invention, its content are enough to make any ability in detail in embodiments below
The technology contents that field technique personnel understand the present invention are simultaneously implemented according to this, and content according to disclosed by this specification, apply for a patent
Scope and schema, it is any skilled person readily understands that related purpose and advantage of the invention.Following embodiment
The viewpoint of the present invention is further described, but it is non-anyways to limit scope of the invention.
The present invention provides a kind of pen type optical sensing apparatus, and the mode being electrically connected with to wireless or entity connects an electronics
Device.One user manipulates pen type optical sensing apparatus, and electronic installation is given to provide a control command.For example, use is worked as
Person manipulates pen type optical sensing apparatus when an object moves up dynamic, can make the figure shown by a display of electronic installation
A cursor on interface carries out a relative displacement.User can move a cursor to the different icons on graphical interfaces, and then control
Electronic installation processed performs different programs.In addition, the pen type optical sensing apparatus of the present invention can be described as pen-like optical mouse.
Referring to Fig. 1 and Fig. 2.Wherein Fig. 1 is the pen type optical sensing apparatus according to one embodiment of the invention
Schematic diagram.Fig. 2 is the close-up schematic view according to the pen type optical sensing apparatus of one embodiment of the invention.According to the present invention
An embodiment, disclose a kind of pen type optical sensing apparatus 1, it includes a penholder 10, a circuit board assemblies 20 and an optics
Induction installation 30.Penholder 10 is extended along an axial A.In the present embodiment, penholder 10 has a first end relative to each other
11 and one second end 12 and the accommodation space 13 in penholder 10.Accommodating sky of the circuit board assemblies 20 in penholder 10
Between 13.Optical induction device 30 is located at the first end 11 of penholder 10 and is electrically connected at circuit board assemblies 20, and optical sensor fills
Put 30 one end for being also located at accommodation space 13.
In the present embodiment and partial other embodiments, pen type optical sensing apparatus 1 further includes a written portion 40, if
The first end 11 of penholder 10 is placed in, to coat most optical induction device 30.Written portion 40 have a fixed part 41 with
An and disassembling part 42.Fixed part 41 is fixedly installed on the first end 11 of penholder 10, and disassembling part 42 is connected to fixed part 41.In this reality
Apply in example, disassembling part 42 is fixed on fixed part 41 by screw.However, in other embodiments, can be used other manner with
It is fixed to one another fixed part 41 and disassembling part 42.For example, fixed part 41 and disassembling part 42 can respectively include corresponding threaded portion,
Disassembling part 42 is arranged at fixed part 41 in rotary manner；Or, fixed part 41 and disassembling part 42 are solid each other in a manner of engaging
It is fixed；Or, the fixed part 41 and disassembling part 42 in written portion 40 are formed in one.In addition, disassembling part 42 has an outlet 421, with
One end of exposure optical induction device 30.However, in other embodiments, pen type optical sensing apparatus 1 can also not include nib
Portion 40, and make optical induction device 30 directly from first end 11 exposed to the external world, and it is directly fixed on penholder 10.
In the present invention, the axial A of penholder 10 is defined as the bearing of trend at the end of first end 11 to the second 12 of penholder 10.
In the present embodiment and partial other embodiments, circuit board assemblies 20 are handling electronic installation（Do not illustrate）
And the signal transmission between optical induction device 30.In the present embodiment and partial other embodiments, circuit board assemblies
20 include a power module 21 and a radio receiving transmitting module 22.For power module 21 to provide electric energy, power module 21 can be with
It is a detachable or non-removable battery, and can is chargeable or disposable battery, but the species of battery is not used to
Limit the present invention.Radio receiving transmitting module 22 receives and sent a signal to electronic installation to Radio Transmission Technology mode, wirelessly
Transmission means can be bluetooth（Bluetooth）, adopting wireless fidelity technology（Wi-Fi, Wireless Fidelity）, infrared ray
Or the transmission means of other prior arts, therefore do not repeat herein.In addition, in other embodiments, circuit board assemblies 20 do not wrap
Containing the radio receiving transmitting module 22 of power module 21 and one, and pen type optical sensing apparatus 1 is electrically connected with electricity by a solid cable
Sub-device, electronic installation provides electric energy and signal gives pen type optical sensing apparatus 1.It is furthermore multiple in can be set on penholder 10
Button（Do not illustrate）, signal is sent with drive circuit board component 20.For example, button is adjusting pen type optical sensing apparatus
1 switch, resolution ratio（Such as dpi, dots per inch）Or give electronic installation one and order, so that electronic installation performs
Relative program.
The structure of optical induction device 30 described in detail below.Referring to Fig. 2 and Fig. 3, wherein Fig. 3 is according to this
Invent the cut-away illustration of the optical induction device of an embodiment.In the present embodiment, it is luminous to include one for optical induction device 30
Part 31, a light guide 32, a lens 33 and an induction pieces 34.In the present embodiment, it is micro- to further include one for optical induction device 30
Type circuit board 35.Micro-circuit board 35 is fixed and is electrically connected at circuit board assemblies 20, and illuminating part 31 and induction pieces 34 are solid
Surely it is arranged on micro-circuit board 35.Micro-circuit board 35 is controlling the shadow of the luminous of illuminating part 31 and control induction pieces 34
As acquisition, image processing and signal transmission.
In the present embodiment, illuminating part 31 is launching light（Do not illustrate）.In the present embodiment, illuminating part 31 is a hair
Optical diode module（Light Emitting Diode, abbreviation LED）, to launch a blue light, a feux rouges or an infrared ray.
So, the species of above-mentioned illuminating part 31 and its light species launched are not used to limit the present invention.
In the present embodiment, light guide 32 has an incident section 321, an exit portion 322 and a through hole 323.It is incident
Portion 321 is located at opposite sides respectively with exit portion 322.In the present embodiment, the width of light guide 32 is from incident section 321 towards going out
Penetrate that portion 322 is tapered, and the width of incident section 321 is more than the width of exit portion 322.Furthermore through hole 323 penetrates incident section 321
And exit portion 322, so that through hole 323 has positioned at one first opening 323a of incident section 321 and positioned at exit portion 322
One second opening 323b.The both ends of incident section 321 have more an incidence surface 321a, and illuminating part 31 faces the incident section of light guide 32
321 incidence surface 321a.Therefore when 31 light-emitting line of illuminating part, light enters in light guide 32 from incidence surface 321a.Outgoing
Portion 322 has an exiting surface 322a, and light constantly can reflect and guide from light guide 32, then outwards be penetrated via exiting surface 322a
Go out.In the present embodiment.Incidence surface 321a area is less than exiting surface 322a area, can so concentrate guiding light, with
Effectively produce brightness uniformity and clearly image.In the present embodiment, from the point of view of by direction as shown, the material of light guide 32 is one can
The plastics and light guide 32 of printing opacity are an inverted cone-shaped structures.In other embodiments, the material of light guide 32 is its of light-permeable
Its material, such as glass.In the present invention, light guide 32 to from incidence surface 321a receive illuminating part 31 emitted by light,
Light makes light by the exiting surface around the second opening 323b in being reflected, reflected or direct direct projection in light guide 32
322a is projected.Then, light is via outlet 421 and along an exposure pathways（Do not illustrate）Project to an object（A such as desktop）
On, so that one is formed on object bright surrounds hot spot.That is, by light guide 32 back taper and loop configuration and enter
Smooth surface 321a area system is less than exiting surface 322a area, can so concentrate guiding light, and then make from the institute of illuminating part 31
The light of transmitting is restrained to form one around hot spot on object along exposure pathways, and brightness uniformity and clearly shadow are obtained with generation
Picture.
In the present invention, " exposure pathways " are defined as the light that illuminating part 31 is launched and concentrate convergence to project from light guide 32
Afterwards, light is projected to the travel path of object.
In the present embodiment, lens 33 are arranged in through hole 323 and have a thing side 331 and an image side surface 332.
In the present embodiment, lens 33 are located in light guide 32.Lens 33 are directed to induction pieces 34 to receive reflected light and concentrate, with
Induction pieces 34 are made to receive the imaging of reflected light.Specifically, light is incident upon after object and surrounds hot spot in formation on object, simultaneously
Object produces a reflected light around hot spot（Do not illustrate）, and make reflected light once again sequentially from the outlet 421 of disassembling part 42 and
Second opening 323b enters in optical induction device 30.Afterwards, reflected light penetrates lens 33, and reflected light is concentrated by lens 33 and led
Induction pieces 34 are led to be imaged.Furthermore the material of lens 33 is the plastics or glass of light-permeable, and the thing side 331 of lens 33 with
And image side surface 332 is all convex surface, but this set location, material and shape are not used to limit the present invention.In addition, in the present embodiment
And in partial other embodiments, all lens 33 be arranged between the second opening 323b and induction pieces 34 and make it is corresponding adjust,
The effect of can reach imaging.Furthermore can be according to actual demand, the thing side 331 of lens 33 and image side surface 332 can be flat
Face, concave surface or convex surface.
Induction pieces 34 are at the first opening 323a.Induction pieces 34 have a capture path C, and induction pieces 34 are to via taking
As path C captures the reflected light from lens 33.Induction pieces 34 are sent to circuit again by this video conversion into a data signal
Board component 20.In the present invention, " capture path C " is defined as the reflected light that object is reflected and is directed to induction pieces from lens 33
34 travel path.
It should be noted that in the present invention, exposure pathways tend to be coaxial with capture path C.The present invention's " tends to be same
Axle ", is defined as that the angle of cut of exposure pathways and capture path C is minimum, when changing the inclination angle of pen type optical sensing apparatus, around light
The variation that spot deviates capture path C is minimum.
In the present invention, axial A and orientation path C accompanies an acute angle Θ（Such as 30 degree）.In this way, work as pen type optical sensing
Device 1 on an object using and make penholder 10 and the normal of object that there is angle Θ A（Such as 45 degree）When, then it is orientated path C
Angled Θ B are handed over the normal of object（That is Θ B subtract Θ equal to Θ A, and 45 degree subtract 30 degree is equal to 15 degree）.So orientation path C's
Variation is smaller（15 degree compared to 45 degree）, hot spot variation is also smaller caused by optical induction device 30, so that pen type optics sense
Surveying device 1 still has good illumination uniformity, and can obtain good clearly imaging.In this way, this case can significantly expand pen type
When optical sensing apparatus 1 uses and object angle of inclination, and then use pen type optical sensing apparatus 1 for greater flexibility.On furthermore
It can be any angle for being less than 90 degree and being more than 0 degree to state acute angle Θ, you can the effect of reaching this case.
However, in the above embodiments, the quantity of illuminating part 31 of optical induction device 30 is one, but its quantity is not used to limit
The fixed present invention.In other embodiments, Fig. 4 is refer to, it is the optical induction device according to another embodiment of the present invention
Cut-away illustration.The structure of the present embodiment is similar to the structure of above-described embodiment, therefore something in common repeats no more.In the present embodiment
In, optical induction device 30 includes two illuminating parts 31, is respectively arranged at micro-circuit board 35, and in face of the incidence of light guide 32
The opposite end in portion 321.In this way, in the case where maintaining same volume shape, brighter illumination can obtain.In other implementations
Example in, the quantity of illuminating part 31 is more than two, can improving optical induction installation 30 luminosity.
In other embodiments, optical induction device 30 further includes a support member（Do not illustrate）, its one end is fixed on miniature
Circuit board 35, its other end is in the through hole 323 between light guide 32, and support member is to fixed lens 33, so that lens
33 induction pieces 34 and second that are firmly arranged at are open between 323b.
Referring to Fig. 5 A, Fig. 5 B, Fig. 5 C, Fig. 6 A, Fig. 6 B and Fig. 6 C, wherein Fig. 5 A are to be implemented according to the present invention one
The intensity map of one pen type optical sensing apparatus of example, Fig. 5 B are intensity maps of Fig. 5 A along Y-axis coordinate 0, and Fig. 5 C are figure
Intensity maps of the 5A along X-axis coordinate 0, Fig. 6 A be prior art a pen type optical sensing apparatus intensity map, Fig. 6 B
For intensity maps of Fig. 6 A along Y-axis coordinate 0, Fig. 6 C are intensity maps of Fig. 6 A along X-axis coordinate 0.Wherein, pen type optics sense
Survey device and be directed at an object（This test is a sensitive piece）And a sensing area is presented, the unit of transverse axis and the longitudinal axis is all millimeter
（The wide 1mm of transverse axis, and the long 1mm of the longitudinal axis）.Centre diagram is respectively this case and the pen type optical sensing apparatus irradiation of prior art
In the brightness branch of sensing area.In addition, left figure is brightness compares figure, Fig. 5 B refer to through sensing area in along 0 point of Y-axis coordinate transverse direction
Intensity map, Fig. 5 C refer to through sensing area in along 0 point of X-axis coordinate longitudinal intensity map.By Fig. 6 A to Fig. 6 C Lai
See, the optical induction device of prior art, its brightness（Illumination, unit lux）It is uneven, mean difference（V）It is 0.43149（When flat
When inequality is lower, it is higher to represent the uniformity）And high-high brightness region it is to the right and not in the center of sensing area.In this way, induction pieces without
Method obtains good imaging.Compared to optical sensing apparatus Fig. 5 A of this case, its brightness uniformity, mean difference is 0.21538, and most
Big brightness is also in the center of sensing area, hence it is evident that better than existing optical induction device.Therefore induction pieces can obtain it is accurate and steady
Fixed imaging.I.e. pen type optical sensing apparatus of the invention can detect accurate image variation, and then improve pen type light
Learn the sensitivity of sensing device further.
This case pen type optical sensing apparatus introduced below and the pen type optical sensing apparatus of prior art are in different inclinations
The brightness of degree and the comparison of definition.In this experiment, set the axial direction of the penholder of the pen type optical sensing apparatus of this case with
The angle in capture path is 30 degree, and the penholder of this case and existing pen type optical sensing apparatus is relative to the normal of sensing area
Angle of inclination is 55 degree.
As shown in Figure 7A and 7B, wherein Fig. 7 A are the pen type optical sensing apparatus according to one embodiment of the invention
Definition（MTF）Sunykatuib analysis figure（Or optical mode flow function（Modulation Transfer Function, MTF）Curve
Figure）, Fig. 7 B are the definition of a pen type optical sensing apparatus of prior art（MTF）Simulation analysis figure, and the transverse axis in diagram
Represent periodicity (Spatial Frequency in Cycles the per mm, unit line- of every millimeter of spatial frequency
Pair/mm), and the longitudinal axis represent be optical mode flow function modulus (Modulus of Modulation Transfer
Function).Compare Fig. 7 A and Fig. 7 B, the vertical direction (T) of each visual field and the imaging of horizontal direction (S) can be found out easily
Resolving power（Or definition）It is substantially better than prior art.
In addition, as Fig. 8 A, Fig. 8 B, Fig. 8 C, Fig. 9 A, Fig. 9 B and and Fig. 9 C shown in, wherein Fig. 8 A be Fig. 7 A pen type
The intensity map of optical sensing apparatus, Fig. 8 B are intensity maps of Fig. 8 A along Y-axis coordinate 0, and Fig. 8 C are Fig. 8 A along X-axis coordinate
0 intensity map, Fig. 9 A are the intensity map of Fig. 7 B pen type optical sensing apparatus, and Fig. 9 B are Fig. 5 A along Y-axis coordinate 0
Intensity map, Fig. 9 C are intensity maps of Fig. 5 A along X-axis coordinate 0.Diagram can be seen that this case illumination uniformity is preferable（This case
Mean difference is 0.242, and prior art is 0.742）.In addition, under this case high-high brightness region is somewhat to the left, prior art pen type light
The high-high brightness region for learning sensing device further is significantly away from central point.
In addition, in another experiment, the axial direction and capture path of the penholder of the pen type optical sensing apparatus of this case are set
Angle is 45 degree, and this case and the penholder of existing pen type optical sensing apparatus are relative to the angle of inclination of the normal of sensing area
70 degree.
As shown in Figure 10A and 10B, Figure 10 A are the pen type optical sensing apparatus according to another embodiment of the present invention
Middle penholder axially presss from both sides 70 degree of definition with 45 degree of capture path folder and axially with object normal（MTF）Sunykatuib analysis figure, and scheme
10B presss from both sides 70 degree of definition for axial direction in another pen type optical sensing apparatus of prior art with object normal（MTF）Simulation point
Analysis figure.It can be seen that by diagram, compared to the experimental differences shown in Fig. 7 A and Fig. 7 B, the solution picture of this case pen type optical sensing apparatus
Power is better than prior art.That is, when angle of inclination is bigger, the resolving power of prior art can be poorer, and this case is carried
The fall of the image quality of the pen type optical sensing apparatus of confession is then significantly smaller.
In addition as shown in Figure 11 A, Figure 11 B, Figure 11 C, Figure 12 A, Figure 12 B and Figure 12 C, Figure 11 A are according to of the invention another
The intensity map of one pen type optical sensing apparatus of one embodiment, Figure 11 B are intensity maps of Figure 11 B along Y-axis coordinate 0,
Figure 11 C are intensity maps of Figure 11 A along X-axis coordinate 0, and Figure 12 A are the brightness of a pen type optical sensing apparatus of prior art
Distribution map, Figure 12 B are intensity maps of Figure 12 A along Y-axis coordinate 0, and Figure 12 C are intensity maps of Figure 12 A along X-axis coordinate 0.
Diagram can be seen that this pattern illumination is more uniform（This case mean difference is 0.242, and prior art is 0.79）.In addition, this case is most light
The deviation distance for spending region is less.The high-high brightness region of prior art pen type optical sensing apparatus is significantly away from does not incline in originally
Central point when tiltedly.
Summary, according to the invention discloses pen type optical sensing apparatus in, axial direction and optical sensor due to penholder
The capture path of device accompanies an acute angle, and the exposure pathways of optical induction device tend to be coaxial with capture path, in this way, working as makes
When using pen type optical sensing apparatus, optical induction device still can obtain the uniformity preferably and be imaged user's wide-angle tilt
Clearly image, and it is sensitive smooth when maintaining the pen type optical sensing apparatus to use, and pen type optical sensing apparatus can be improved
Operating angle scope.In addition, pen type optical sensing apparatus can be applied to various smooth and coarse working surface, such as hand
On the palm, books or desktop.Therefore the present invention solve in the prior art pen type optical sensing apparatus in wide-angle use range
It is interior, because brightness disproportionation and imaging are bad（Mtf value is low) and cause to use insensitive problem.
Furthermore accompany an acute angle compared to incident light in the prior art and reflected light and volume is become big, the pen of this case
The transmission path of the light of type optical sensing apparatus and the capture path of reflected light are coaxial, thus volume can be made significantly to reduce.Separately
Outside because the area of the incidence surface of light guide is less than the area of exiting surface, guiding light can be so concentrated, is obtained with generation bright
Degree is uniformly and clearly image.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Various corresponding changes and deformation, but these corresponding changes and deformation can be made according to the present invention by knowing those skilled in the art
The protection domain of the claims in the present invention should all be belonged to.
Claims (7)
1. a kind of pen type optical sensing apparatus, it is characterised in that include：
One penholder, along an axially extending setting；
One circuit board assemblies, in the penholder；And
One optical induction device, located at one end of the penholder and the circuit board assemblies are electrically connected with, the optical induction device includes：
An at least illuminating part, to launch a light；
One light guide, has an incident section relative to each other and an exit portion, and the incident section has an incidence surface, exit portion tool
There is an exiting surface, the light emitted by an at least illuminating part enters the light guide from the incidence surface and penetrated from the exiting surface
Go out, wherein the area of the incidence surface is less than the area of the exiting surface, and the light enters the leaded light by the less incidence surface of area
Part, and constantly reflect and guide in the light guide, then faced out by the larger light extraction of area along an exposure pathways to one
Object,
To form bright hot spot, the reflected light of object reflection one；
One lens, to guide the reflected light；And
One induction pieces, there is a capture path, the induction pieces are to via the reflection of capture path acquisition from the lens
Light, and the exposure pathways tend to be coaxial with the capture path, the axial direction accompanies an acute angle with the capture path.
2. pen type optical sensing apparatus according to claim 1, it is characterised in that the light guide, which has, penetrates the incident section
With a through hole of the exit portion, the through hole has one first opening and one second opening, and at least an illuminating part is located at for this
At the incident section, the induction pieces to should first opening.
3. pen type optical sensing apparatus according to claim 1, it is characterised in that the width of the incident section is more than the outgoing
The width in portion.
4. pen type optical sensing apparatus according to claim 1, it is characterised in that when the quantity of an at least illuminating part is
When two, two illuminating part is respectively arranged at the opposite end of the incident section of the light guide.
5. pen type optical sensing apparatus according to claim 2, it is characterised in that further include a written portion, be arranged at this
Outside optical induction device, the written portion has an outlet, corresponding to second opening of the through hole.
6. pen type optical sensing apparatus according to claim 1, it is characterised in that there is an accommodation space in the penholder,
The circuit board assemblies are arranged in the accommodation space, and the optical induction device is located at one end of the accommodation space.
7. pen type optical sensing apparatus according to claim 1, it is characterised in that the circuit board assemblies include a power supply mould
Block and a radio receiving transmitting module, and an at least illuminating part is a light-emitting diode (LED) module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041824.3A CN104808815B (en) | 2014-01-28 | 2014-01-28 | Pen type optical sensing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041824.3A CN104808815B (en) | 2014-01-28 | 2014-01-28 | Pen type optical sensing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104808815A CN104808815A (en) | 2015-07-29 |
| CN104808815B true CN104808815B (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410041824.3A Expired - Fee Related CN104808815B (en) | 2014-01-28 | 2014-01-28 | Pen type optical sensing apparatus |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI662353B (en) * | 2018-07-13 | 2019-06-11 | 松翰科技股份有限公司 | Optical image sensing module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100438846B1 (en) * | 2003-10-07 | 2004-07-06 | 함종훈 | Pen-type mouse apparatus |
| 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 |
| CN201667061U (en) * | 2010-04-07 | 2010-12-08 | 昆盈企业股份有限公司 | Pen type optical inputting device |
| CN102096485A (en) * | 2011-01-13 | 2011-06-15 | 圆展科技股份有限公司 | Pen-shaped input device |
| CN103229129A (en) * | 2010-11-22 | 2013-07-31 | S·瓦利切克 | Optics for pencil optical input computer peripheral controller |
| CN103308924A (en) * | 2012-03-14 | 2013-09-18 | 昆盈企业股份有限公司 | Optical sensing device |
-
2014
- 2014-01-28 CN CN201410041824.3A patent/CN104808815B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100438846B1 (en) * | 2003-10-07 | 2004-07-06 | 함종훈 | Pen-type mouse apparatus |
| 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 |
| CN201667061U (en) * | 2010-04-07 | 2010-12-08 | 昆盈企业股份有限公司 | Pen type optical inputting device |
| CN103229129A (en) * | 2010-11-22 | 2013-07-31 | S·瓦利切克 | Optics for pencil optical input computer peripheral controller |
| CN102096485A (en) * | 2011-01-13 | 2011-06-15 | 圆展科技股份有限公司 | Pen-shaped input device |
| CN103308924A (en) * | 2012-03-14 | 2013-09-18 | 昆盈企业股份有限公司 | Optical sensing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104808815A (en) | 2015-07-29 |
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