CN100346276C - Optical pen with optical path coaxial with pen tip - Google Patents
Optical pen with optical path coaxial with pen tip Download PDFInfo
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- CN100346276C CN100346276C CNB2005100019738A CN200510001973A CN100346276C CN 100346276 C CN100346276 C CN 100346276C CN B2005100019738 A CNB2005100019738 A CN B2005100019738A CN 200510001973 A CN200510001973 A CN 200510001973A CN 100346276 C CN100346276 C CN 100346276C
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Abstract
The invention discloses an optical pen, comprising: a pen holder, a pen point, a light source, and a light sensor. The penholder extends for a preset length along an axis direction. The pen point is positioned at one tail end of the pen holder and is positioned in the axis direction. The light generated by the light source is directed to an external surface located near the pen tip to generate a reflected image light traveling along an optical path. And, at least a portion of the optical path overlaps the axial direction. The light sensor is located on the optical path and can be used for receiving the image light and converting the image light into an electrical signal. Since the optical path of the image capturing light of the optical pen is coaxial with the pen tip, when the optical pen is used for writing, the advancing speed, direction and distance of the image captured by the light sensor are all the same as those of the pen tip.
Description
Technical field
The present invention relates to the coaxial optical pen of a kind of optical path and nib, particularly a kind of optical path and coaxial a kind of optical pen of nib of integrating optical mouse and handwriting identification function and its pick-up image light.
Background technology
For desktop or mobile computer, personal digital assistant (Personal Digital Assistant; Be called for short PDA), with the various electronic information aids that great mass of data input demand is often arranged such as intelligent mobile phone (Smart Phone), hand input device convenient selection of another except that mouse and keyboard beyond doubt.
At present known hand input device can be divided three classes, a kind of touch control screen that needs to cooperate pressure sensitive uses, a kind of be that the digitizing tablet of electromagnetic induction uses, also has a kind of optical pen that just is to use.Because it is relatively low and be suitable on any surface the characteristic that operation is write that optical pen has cost, therefore become present various hand input devices in more general relatively a kind of.
See also the synoptic diagram of a kind of known optical pen 10 shown in Figure 1.By and large, optical pen 10 can be described as the optical mouse of a penholder shape in fact.Body 11 persons of being easy to use of its penholder shape grip and write, and are positioned at the light source 12 and the optical inductor 13 of body 11 lower ends, and then fechtable is positioned at the reflected image of the position, zonule 16 near the nib 14 the extraneous surface 15.When optical pen 10 moved, institute's picked image can produce continuity and directive variation, can detect direction and speed that optical pen 10 moves by this.After this information sent to electronic information aid that optical pen 10 connected and handle, just can reach the purpose of handwriting input.
Yet known optical pen 10 as shown in Figure 1 has a distinct disadvantage.See also Fig. 2 A and Fig. 2 B, be respectively the optical path of known optical pen 10 shown in Figure 1 and the relative position synoptic diagram of nib 14, and known optical pen 10 shown in Figure 1 is when mobile, the nib 14 of its optical pen 10 and the relative position synoptic diagram of optical inductor 13 pick-up image positions 16.Because an axis direction 17 of the nib 14 of known optical pen 10 is not coaxial (that is non-overlapped) with the optical path 18 (that is light travel path) of optical inductor 13 pick-up images, thus the position 16 of nib 14 and optical inductor 13 pick-up images between have a spacing d.When user's operating optical pen 10 is write, then optical pen 10 will produce spinning movement, and as shown in Fig. 2 B, optical inductor 13 picked image gait of march, direction, with distance all can be different with nib 14, and cause nib 14 to adopt straightaway, but optical inductor 13 picked image are results of crooked camber line image.And if be when carrying out stroke turnover (that is non-directional action of writing) action, 13 picked image literal of optical inductor or figure, the distortion distortion that easier generation can't be expected or even cause the lines non-continuous event.
Summary of the invention
Fundamental purpose of the present invention provides a kind of optical path and the coaxial optical pen of nib, and it carries out action of writing, the gait of march of the image that optical inductor captured, direction, with distance all can be identical with nib.
Another object of the present invention provides a kind of optical path and the coaxial optical pen of nib, and its optical path and the nib that can integrate optical mouse and handwriting identification function and optical pen pick-up image light is coaxial.
A further object of the present invention provides a kind of optical path and the coaxial optical pen of nib, by being provided with the photoconduction injection of light source of leaded light component, can make the optical path of optical pen pick-up image light and nib become coaxial near the nib and by nib basket sky being made near the reflected image light the nib can enter nib by this basket vacancy.
For reaching above-mentioned purpose, the coaxial optical pen of optical path of the present invention and nib can comprise: a penholder, a nib, a light source, an and optical inductor.This penholder extends a predetermined length along an axis direction.Nib is positioned on terminal and located this axis direction of this penholder.Light source is in order to produce rayed near an extraneous surface that is positioned at this nib, to produce a reflected image light on this surface, external world.This image light is advanced along an optical path that is positioned at nib, and this optical path has a part of and this axis direction overlaid at least.Optical inductor is positioned on this optical path, can be in order to accept this image light and to be converted into an electrical signal.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the synoptic diagram of a traditional optical pen;
Fig. 2 A is the optical path of traditional optical pen shown in Figure 1 and the relative position synoptic diagram of nib;
Fig. 2 B be traditional optical pen shown in Figure 1 when rotation is mobile, the relative position synoptic diagram of the nib of its optical pen and optical inductor pick-up image position;
Fig. 3 is the first preferred embodiment synoptic diagram of the coaxial optical pen of optical path of the present invention and nib;
Fig. 4 A is the optical path of optical pen of the present invention and the relative position synoptic diagram of nib;
Fig. 4 B is an optical pen of the present invention when rotation is mobile, the relative position synoptic diagram of the nib of its optical pen and optical inductor pick-up image position;
Fig. 5 is the second preferred embodiment synoptic diagram of the coaxial optical pen of optical path of the present invention and nib;
Fig. 6 is the 3rd a preferred embodiment synoptic diagram of the coaxial optical pen of optical path of the present invention and nib;
Fig. 7 is the 4th a preferred embodiment synoptic diagram of the coaxial optical pen of optical path of the present invention and nib;
Fig. 8 is the 5th a preferred embodiment synoptic diagram of the coaxial optical pen of optical path of the present invention and nib;
Fig. 9 is the 6th a preferred embodiment synoptic diagram of the coaxial optical pen of optical path of the present invention and nib.
Description of reference numerals: 10 optical pen; 11 bodies; 12 light sources; 13 optical inductors; 14 nibs
15 extraneous surfaces; 16 positions; 17 axis directions; 18 optical paths; 20,20a, 20b, 20c, 50,50a optical pen; 21,21a, 21b, 21c, 51,51a penholder; 22,22a, 22b, 22c, 52,52a nib; 23,23a, 23b, 23c, 53,53a light source; 24,24b first lens; 25,25a, 25b, 25c second lens; 26,26a, 26b, 26c, 56,56a optical inductor; 27,27a, 27b, 27c control module; 28 buttons; 29,29a elastic mechanism; 30,30a pressure inductor; 31 semi-penetration semi-reflective mirrors; 32,32a, 32b, 62,62a axis direction; 33,63, the extraneous surface of 63a; 34,34a, 64,64a optical path; 35, the 35c basket is absolutely empty; 36 through holes; 37,37c, 57,57a leaded light component; 371 1 ends; 38 prism groups; 381 first prisms; 382 second prisms; 383 interfaces; 384 first incidence surfaces; 385 first exiting surfaces; 386 second incidence surfaces; 387 second exiting surfaces; 55,55a lens; 571 oblique vertebra faces; 572 cut-outs; 631,631a zone.
Embodiment
See also the relative position synoptic diagram of the optical path of the first preferred embodiment synoptic diagram of the coaxial optical pen 50 of Fig. 3, Fig. 4 A and Fig. 4 B optical path of the present invention shown in respectively and nib, optical pen of the present invention and nib and optical pen of the present invention when mobile, the relative position synoptic diagram of its nib and optical inductor pick-up image position.
As shown in Figure 3, first preferred embodiment of the coaxial optical pen 50 of optical path of the present invention and nib can comprise: a penholder 51, a nib 52, a light source 53, lens 55, an optical inductor 56, an and leaded light component 57.
This penholder 51 constitutes the body of optical pen 50, for each assembly of ccontaining optical pen 50.In present embodiment, this penholder 51 is a long and narrow rod-shaped elements and extends a predetermined length along an axis direction 62 substantially.
This nib 52 is positioned at an end (lower end) of this penholder 51 and is located on this axis direction 62, so in present embodiment, the axis direction 62 of this penholder 51 is the axis direction 62 of nib 52.In present embodiment, this nib 52 is made of the least significant end (bottom) of this leaded light component 57.This leaded light component 57 is made by the leaded light material, and its upper end is adjacent to light source 53, the other end and then approaches these nib 52 places and be provided with an oblique vertebra face 571.Can form a reflecting surface in this oblique vertebra face 571, for example can apply light reflecting material, or make the light source of leaded light component 57 inside can be subjected to oblique vertebra face 571 reflections with the arrangement of suitable angle merely and be folded at its outer surface.Therefore, inject this leaded light component 57 and guided by it by light source 53 light that produces, that is, repeatedly reflect in leaded light component 57 inside and advance along leaded light component 57 bearing of trends, be subjected to oblique vertebra face 571 reflections at last again and penetrate by this end of nib 52.By the setting of this leaded light component 57, make light source 53 light that produces to be guided and concentrate near the zone 631 the contiguous nib 52 on the surface, outside boundary 63, reach the effect that light is concentrated.
The illumination that this light source 53 produces is mapped near the extraneous surface this nib 52, for the reflected image light of a zonule 631 that obtains this surface, external world 63.The course definable of this reflected image light has an optical path 64.In present embodiment, this light source 53 can be a light emitting diode (LED) or miniature traditional osram lamp.And the optical path 64 of this reflected image light is coaxial (that is overlaid) with the axis direction of nib 52 62.
These lens 55 are located at before the optical inductor 56, and it can be a single lens or a lens combination.These lens 55 can be assembled image light and be imaged on the optical inductor 56.This optical inductor 56 is in order to accept near this image light the nib 52 and to be converted into an electrical signal.In present embodiment, this optical inductor 56 can be a field-effect transistor optical inductor (CMOS Sensor) or a Charged Coupled Device optical inductor (CCD).
Utilize above-mentioned design, the light travel path of the reflected image light of optical pen 50 of the present invention (that is optical path 64) can be shown in Fig. 4 A and these axis direction 62 overlaids (that is the optical path 64 of image light is a concentric with nib 62).So, shown in Fig. 4 B, the user when handwriting input, the gait of march of optical inductor 56 zonule that captures 631 images of optical pen 50 of the present invention, direction, with distance all can be identical with nib 52.Optical pen of the present invention 50 no matter be carry out that straight line is write or or even stroke turnover (that is non-directional action of writing) when causing the rotation of optical pen 50, literal or imaging distortion distortion or the non-continuous event imported can not take place yet, and overcomes the defective of conventional art fully.
As shown in Figure 5, second preferred embodiment of the coaxial optical pen 20 of optical path of the present invention and nib comprises: a penholder 21, a nib 22, a light source 23, one first lens 24, one second lens 25, an optical inductor 26, a control module 27, a button 28, an elastic mechanism 29, a pressure inductor 30 and a semi-penetration semi-reflective mirror 31.
This penholder 21 extends the body of a predetermined length and formation optical pen 20 along an axis direction 32, for each assembly of ccontaining optical pen 20.This nib 22 is positioned at an end (lower end) of this penholder 21 and is located on this axis direction 32.In present embodiment, this nib 22 is a solid transparent assembly, and it can be made by materials such as transparent plastics, acryl, glass or quartz.
The light that this light source 23 produces shines near the extraneous surface 33 the nib 22, for the reflected image light of a zonule that obtains this surface, external world 33.
These first lens 24 are located near the light source 23, and it can be a single lens or a lens combination.These first lens 24 can and roughly can accumulate on the zonule that extraneous surface 33 is positioned near the pre-sizing the nib 22 it with the in addition light harvesting of light that light source 23 produces.Generally speaking, the size of this zonule can be good between about 3mm * 3mm to 8mm * 8mm.
These second lens 25 are located at before the optical inductor 26, and it can be a single lens or a lens combination.These second lens 25 can be assembled image light and be imaged on the optical inductor 26.
This optical inductor 26 is in order to accept near this image light the nib 22 and to be converted into an electrical signal.
This control module 27 is connected in this light source 23 and this optical inductor 26, can accept this electrical signal from optical inductor 26, and in addition after the calculation process, produce one first corresponding controlling signal, send the extraneous electronic information aid (not shown) that is connected to wired or wireless mode and do further calculation process, to carry out one first predetermined function, for example control the mobile and location of cursor position or carry out hand-write input function.
This button 28 is connected in this control module 27, can make control module 27 produce one second corresponding controlling signal by pushing this button 28, send the extraneous electronic information aid that is connected to through control module 27 and do further calculation process, to carry out one second predetermined function, for example carry out cursor position pairing execution merit able one (function of just similar conventional mouse button).
This elastic mechanism 29 is linked to nib 22, makes this nib 22 can be subjected to an ambient pressure and the telescopic displacement that carries out preset distance moves.Simultaneously, this pressure inductor 30 is arranged at the position of contiguous nib 22 in the penholder 21, can detect the telescopic displacement motion of nib 22 and produce one the 3rd corresponding controlling signal.When user's operating optical pen 20 makes its nib 22 should the external world during surface 33 to lower compression, pressure inductor 30 can produce the 3rd controlling signal and send the extraneous electronic information aid that is connected through control module 27 to, to carry out one the 3rd predetermined function, for example carry out variation according to the pressure size and change the thickness (also can write Brush calligraphy) of the picture and text lines of importing or activate other function such as image scanning or telescopic nib 22 is used as another button uses.In present embodiment, this light source 23 and this optical inductor 26 not interlock in this nib 22, so when nib 22 carried out the telescopic displacement motion, light source 23 and optical inductor 26 were along with nib 22 moves.
This semi-penetration semi-reflective mirror 31 is located on these axis directions 32, and is 45 degree angle modes with axis direction 32 and is provided with, and this light source 23 and this optical inductor 26 lay respectively at the relative two sides of this semi-penetration semi-reflective mirror 31.The light that this light source 23 is produced makes the light of part can be subjected to 31 reflections of semi-penetration semi-reflective mirror and near this nib 22 of directive to be this semi-penetration semi-reflective mirror 31 of direction directive of 90 degree angles substantially with this axis direction 32.And optical inductor 26 is located on these axis directions 32, is had part can penetrate this semi-penetration semi-reflective mirror 31 and is arrived this optical inductor 26 by near the image light of penetrating back the nib 22.Therefore, in this preferred embodiment, the light travel path (that is optical path 34) of optical pen 20 its reflected image light also is and these axis direction 32 overlaids (that is the optical path 34 of image light is a concentric with nib 22).
In other preferred embodiment of the present invention of the following stated, because most of assembly system is the same as or similar to aforesaid embodiment.So identical or similar assembly will give identical numeral number and component Name and repeat no more its detailed formation, and only be after former numeral number, to increase by an English alphabet as a means of difference.
The 3rd preferred embodiment synoptic diagram of the optical pen 20a that optical path of the present invention as shown in Figure 6 and nib are coaxial.The optical pen of the 3rd preferred embodiment has penholder 21a, nib 22a, light source 23a, the second lens 25a, optical inductor 26a, control module 27a, button (this figure does not show), elastic mechanism 29a, and assembly such as pressure inductor 30a equally.Its difference is:
This nib 22a also is provided with absolutely empty 35 in a basket and a through hole 36 in the part of extending along this axis direction 32a, and absolutely empty 35 in this basket and through hole 36 can pass through for this image light.And this nib 22a is made of the leaded light material and also designs a leaded light component 37, and an end 371 of this leaded light component 37 is adjacent to the end that light source 23a, the other end then are adjacent to nib 22a.Inject this leaded light component 37 and guided by it by light source light that 23a produces, that is, repeatedly reflect in leaded light component 37 inside and advance along leaded light component 37 bearing of trends, penetrate by this end of nib 22a more at last.By the setting of this leaded light component 37, make light source light that 23a produces to be guided and near concentrated zone nib 22a, reach the effect that light is concentrated, the setting that also can save first lens simultaneously.In addition, in present embodiment, this light source 23a and this optical inductor 26a are arranged in the nib 22a.So when nib 22a carried out the telescopic displacement motion, light source 23a and optical inductor 26a will be along with nib 22a motions.This kind design can make the optical path 34a length of optical pen 20a not be pressed flexible by nib 22a to be influenced.
The 4th preferred embodiment synoptic diagram of the optical pen 20b that optical path of the present invention as shown in Figure 7 and nib are coaxial.The optical pen of the 4th preferred embodiment has penholder 21b, nib 22b, light source 23b, the first lens 24b, the second lens 25b, optical inductor 26b, and assembly such as control module 27b equally.Its difference is:
This optical pen 20b also includes a prism group 38, is located on this axis direction.This prism group 38 is a reverse total internal reflection prism group (Reversed Total Internal Reflection; RTIR) and also comprise: second prism 382 that first prism 381 and with wedge shape section has right triangular cross-sectional, this first prism 381 and second prism 382 are constituted with the transparent material with predetermined optical refractive index, make the interface 383 of the win prism 381 and second prism 382 upwards become the fully reflecting surface of incident ray at a predetermined angle at folk prescription.This prism group 38 has and comprises one first incidence surface 384, one first exiting surface 385, one second incidence surface 386 and one second exiting surface 387, the light of being injected at a predetermined angle by first incidence surface 384 can be penetrated by first exiting surface 385, and can penetrate by second exiting surface 387 by the light that second incidence surface 386 is injected at a predetermined angle, and this first exiting surface 385 and second incidence surface 386 are with one side.On the wide body that this light source 23b is produced along this first incidence surface 384 of this axis direction 32b directive, make light penetrate this prism group 38 and by first exiting surface 385 penetrate and this nib of directive 22b near; And optical inductor 26b is positioned near second exiting surface 387, is injected prism group 38 via second incidence surface 386 and is subjected to its reflection back to arrive this optical inductor 26b by 387 ejaculations of second exiting surface by near the image light of penetrating back the nib 22b.By the setting of the prism group 38 of present embodiment, the utilization ratio of the light that light source 23b sent is improved relatively.
The 5th preferred embodiment synoptic diagram of the optical pen 20c that optical path of the present invention as shown in Figure 8 and nib are coaxial.The optical pen 20c of the 5th preferred embodiment has penholder 21c, nib 22c, light source 23c, the second lens 25c, optical inductor 26c, control module 27c, absolutely empty 35c of basket, and assembly such as leaded light component 37c equally.Its difference is:
The leaded light component 37c of this nib 22c is fixed on the penholder 21c, so do not have the function of flexible nib 22c.And this leaded light component 37c is in the design that presents the cross section convergent near the part system of nib 22c end, to add the high light localization effects.
The 6th preferred embodiment synoptic diagram of the optical pen 50a that optical path of the present invention as shown in Figure 9 and nib are coaxial.The optical pen 50a of the 6th preferred embodiment has penholder 51a, nib 52a, light source 53a, lens 55a, optical inductor 56a, and assembly such as leaded light component 57a equally.And the optical path 64a of the image light that is reflected by the zonule 631a of the surperficial 63a in the external world is coaxial with the axis direction 62a of penholder 51a equally.Its difference is:
Include an excision part 572 in this leaded light component 57a away from light source 53a and than the part (that is lower right corner part of leaded light component 57a shown in Figure 9) of access areas 631a.The shape that this cut-out 572 can make leaded light component 57a is just like as the nib structure of general pen, and can having relatively, more sharp-pointed nib 52a writes in order to the user.
But above-described embodiment does not limit range of application of the present invention, and protection scope of the present invention should be determined with claim institute's definition techniques spirit of the present invention and the impartial scope that is included that changes thereof.Therefore, all equalizations of doing according to claim of the present invention change and modify, and will not lose main idea of the present invention place, also do not break away from the spirit and scope of the present invention, all should be considered as further enforcement of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100019738A CN100346276C (en) | 2005-01-13 | 2005-01-13 | Optical pen with optical path coaxial with pen tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100019738A CN100346276C (en) | 2005-01-13 | 2005-01-13 | Optical pen with optical path coaxial with pen tip |
Publications (2)
| Publication Number | Publication Date |
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| CN1804770A CN1804770A (en) | 2006-07-19 |
| CN100346276C true CN100346276C (en) | 2007-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100019738A Expired - Fee Related CN100346276C (en) | 2005-01-13 | 2005-01-13 | Optical pen with optical path coaxial with pen tip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11709555B2 (en) | 2021-09-16 | 2023-07-25 | Samsung Display Co., Ltd. | Smart pen and a display device using the same |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360252B (en) * | 2011-10-17 | 2015-01-14 | 东莞华中科技大学制造工程研究院 | Photoelectric sensing device and implementation method thereof |
| CN103308924A (en) * | 2012-03-14 | 2013-09-18 | 昆盈企业股份有限公司 | Optical sensing device |
| CN103902028B (en) * | 2012-12-26 | 2018-06-08 | 夏普株式会社 | Input equipment, interactive system and input method |
| CN104808815B (en) * | 2014-01-28 | 2018-02-16 | 昆盈企业股份有限公司 | Pen-shaped optical sensing device |
| CN108983999B (en) * | 2017-06-05 | 2021-10-22 | 奇象光学有限公司 | digital pen |
| KR102446916B1 (en) * | 2022-06-03 | 2022-09-23 | 주식회사 보나 | Optical electronic pen based on light scattering using optical fusion optical fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266157Y (en) * | 1996-08-12 | 1997-10-29 | 马在光 | Photoelectronic handwrite mouse pen |
| US6151015A (en) * | 1998-04-27 | 2000-11-21 | Agilent Technologies | Pen like computer pointing device |
| CN2522929Y (en) * | 2001-12-22 | 2002-11-27 | 宋柏君 | Optical handwriting pen nib |
| CN1388925A (en) * | 2000-12-15 | 2003-01-01 | 丁系统有限责任公司 | Pen type optical mouse device and method of controlling the same |
| CN1437095A (en) * | 2002-02-07 | 2003-08-20 | 天瀚科技股份有限公司 | Digital pen with tracking and pressure sensing |
-
2005
- 2005-01-13 CN CNB2005100019738A patent/CN100346276C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266157Y (en) * | 1996-08-12 | 1997-10-29 | 马在光 | Photoelectronic handwrite mouse pen |
| US6151015A (en) * | 1998-04-27 | 2000-11-21 | Agilent Technologies | Pen like computer pointing device |
| CN1388925A (en) * | 2000-12-15 | 2003-01-01 | 丁系统有限责任公司 | Pen type optical mouse device and method of controlling the same |
| CN2522929Y (en) * | 2001-12-22 | 2002-11-27 | 宋柏君 | Optical handwriting pen nib |
| CN1437095A (en) * | 2002-02-07 | 2003-08-20 | 天瀚科技股份有限公司 | Digital pen with tracking and pressure sensing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11709555B2 (en) | 2021-09-16 | 2023-07-25 | Samsung Display Co., Ltd. | Smart pen and a display device using the same |
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| Publication number | Publication date |
|---|---|
| CN1804770A (en) | 2006-07-19 |
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