CN2845012Y - Small-sized spin optical displacement detection device - Google Patents
Small-sized spin optical displacement detection device Download PDFInfo
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- CN2845012Y CN2845012Y CNU2005201303135U CN200520130313U CN2845012Y CN 2845012 Y CN2845012 Y CN 2845012Y CN U2005201303135 U CNU2005201303135 U CN U2005201303135U CN 200520130313 U CN200520130313 U CN 200520130313U CN 2845012 Y CN2845012 Y CN 2845012Y
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- spin
- detection device
- displacement detection
- optical displacement
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Abstract
A kind of small-sized spin optical displacement detection device mainly comprises a laser diode, a spin and a sensing system, and wherein this sensing system comprises a sensing element and an analysis circuit system again; Thereby, can shine this spin spheric reflection by laser light and to the sensing element of this sensing system, form interference image, and move the interference image of the diverse location that produces because of the spin sphere by this analysis circuit compare of analysis, direction and distance to judge that spin sphere and optical displacement detection device relatively move are beneficial to the miniaturization of electronic equipment.
Description
Technical field
The relevant a kind of spin optical displacement detection device of the utility model, especially relevant a kind of small-sized spin optical displacement detection device that can be used for Genius mouse.
Background technology
Displacement detection apparatus is used maximum mouse apparatus that are to use at computer, and existing computer mouse device can be divided into mechanical type roller-ball mouse and optical mouse, wherein the mechanical type roller-ball mouse mainly is arranged on spin and the surface of contact of object (that is mouse below), utilize spin on body surface, to move, the X and the Y direction mechanical rotating shaft that drive in the mouse switch internal light source, detect and produce the signal of relatively move direction and distance between mouse and body surface by this, subsequently this signal is passed to the computer vernier on the controlling computer display by this.In addition, other has a kind of bobbin type mouse, is spin to be located on the mouse control face (that is mouse top), and mat finger push spin is detected direction and displacement that spin moves by this, and the vernier on the controlling computer display by this.Only above-mentioned mechanical type roller-ball mouse is because the displacement sensitivity of being detected is lower, that is the image analytic degree of mouse (is that unit is represented with dotper inch (dpi) generally,) lower, have only about 100～200dpi, therefore mouse or spin need the suitable distance of displacement, can react on the vernier on the computer monitor, especially spin is located at and utilizes on the mouse control face in the mode that the finger push spin detects, because sensitivity and image analytic degree are very low, therefore spin must be rotated sizable displacement, just can control vernier and move to the position that will arrive.For allowing the user operate smoothly, the diameter dimension of general spin is about about 2～3cm, and all for miniaturization, the light-weighted target, this kind mechanical type roller-ball mouse is outdated for present electronic equipment.
And in addition on the one hand, referring to Fig. 1,1 of known optical mouse is to utilize light emitting diode 11 emission light beam I
1, this light beam I
1 Project body surface 15 via guiding device 12 and produce the image that light and shade changes, this surface image is again with folded light beam I
2Focus on and image on the sensing element of sensing system 14 by imaging len 13, image before and after analysis circuit system on the sensing system 14 moves according to the optical mouse that is captured is analysed and compared, calculate the moving direction and the distance of optical mouse, the vernier on the controlling computer moves by this.Because the image analytic degree of optical mouse can reach 400～800dpi, more than mechanical type spin sensitivity, optical mouse replaces the mechanical type roller-ball mouse gradually at present.
Yet the employed light emitting source of this kind known optical mouse arrangement for detecting is a light emitting diode, and its power consumption is bigger, and about 30 to 50 milliamperes of required electric current account for about 1/3rd to 1/2nd of optical mouse total power consumption under the continuous action.Moreover owing to be diverging light, its image analytic degree still is limited in below the 800dpi with light source that light emitting diode was sent, and sensitivity similarly is still not enough.
For example notebook computer, mobile phone, personal digital assistant (as: PDA), walkman product etc. more develop towards slimming, lightweight and conformability along with various mobile electronic devices, following many products, may possess computer and function of surfing the Net as mobile phone, only can't miniaturization extremely further make these mobile electronic devices more miniaturization or slimming in view of the displacement detection apparatus at present, and become developmental obstruction.
In view of the above problems, the utility model people carries out broad research to displacement detection apparatus structure and each member of optical mouse etc., and intention obtains to have more the displacement detection apparatus of sensitivity, littler consumed power and smaller szie, thereby finishes the utility model.
Novel content
The purpose of this utility model is, a kind of small-sized spin optical displacement detection device is provided, and it has high-res, low consumpting power and undersized characteristics.
A kind of small-sized spin optical displacement detection device of the utility model is characterized in that, comprising:
One is used to control the spin of arrangement for detecting displacement;
One is used to the laser diode launching laser and expose to this spin sphere; And
One sensing apparatus, its comprise again a sensing element and that is used to be received from this spin interference image that spheric reflection forms be used for compare of analysis spin sphere move the diverse location interference image that produces and judge the relatively move analysis circuit of direction and distance of spin sphere and optical displacement detection device.
Wherein, this laser diode is a surface emitting laser transistor.
Wherein, the diameter of this spin is less than 1.5cm.
Wherein, this sensing element is one of complementary metal oxide semiconductor (CMOS), photoelectric crystal, charge coupled cell or its combination.
Wherein, this laser diode and sensing element are the integrated component of a common encapsulation; Wherein sensing element is one of complementary metal oxide semiconductor (CMOS), photoelectric crystal, charge coupled cell or its combination.
Wherein, this spin is positioned on the outer mask, and the part of spin is exposed outside this outside mask.
The utility model beneficial effect:
According to the utility model, utilize the light source of laser diode as the optical mouse detecting device, because the spot (speckles) of the interference image that laser produces is very little, available following formulate
δ is the expression spot diameter, and λ is an expression laser light wavelength, and L is the distance of laser radiation plane to sensing element, the diameter of the D luminous point that then is laser radiation to the plane.For example use the laser of 0.85 micron (μ m), L is 1.0cm, D is 0.2cm, the laser interference spot that is produced is only had an appointment about 5 microns (μ m), and image analytic degree approximately is the inverse (1/2 δ) of twice spot diameter, can be up to 2500dpi, the optical angle of adding spin sphere curvature increases effect, make the image analytic degree of essence to be about the resolution more than 20 times of common mechanical mouse, and to be the resolution more than 5 times of general optical mouse greater than more than the 3500dpi.
Therefore,, can utilize diameter, even less than 5 millimeters spin, rotate easily with its high sensitivity and control vernier and move up and down less than 1.5cm by formation of the present utility model, and can reach will existing spin (or trace ball) compact in size purpose.Therefore more can be applicable to for example slimming or the miniaturization mobile electronic device of notebook computer, mobile phone, personal digital assistant, pen-type mouse (Pen Mouse), third generation audio files compressed format (MPEG AUDIO LAYER III is commonly called as MP3) etc.
This used sensing element can utilize complementary metal oxide semiconductor (CMOS) (Complementary Metal-Oxide Semiconductor in the mini-trackball optical displacement detection device of the present utility model, CMOS), (Charge Coupling Device CCD) carries out sensing for photoelectric crystal (Photo-Transistor) or charge coupled cell.Above-mentioned these three kinds of sensing elements are to know the semiconductor applications person knows the general sensing element of knowing, therefore should need not to be given unnecessary details in the utility model instructions again.
In the mini-trackball optical displacement detection device of the present utility model, but this laser diode and sensing element can be respectively encapsulation also mutual encapsulation in an integrated component.
Used laser diode especially can be wall emission laser (VCSEL in the small-sized spin optical displacement detection device of the present utility model, Vertical Cavity Surface-Emitting Laser), to make required electric power of time spent lower relatively because of it, and help reducing power consumption, be more suitable for being used in the mobile electronic device that need utilize battery.
The utility model will cooperate and graphicly more specifically explain detailedly.
Description of drawings
Fig. 1: the synoptic diagram of known optical mouse arrangement for detecting; And
Fig. 2: the synoptic diagram of spin optical displacement detection device of the present utility model.
Embodiment
Small-sized spin optical displacement detection device 2 of the present utility model as shown in Figure 2, comprises a laser diode 21, one a small-sized spin 22 and a sensing system 23, wherein by moving the displacement and the direction of these spin 22 control verniers; This sensing system 23 comprises a sensing element and an analysis circuit system (not showing in graphic) again; Rayed spin 22 spheric reflections to the sensing element and the detecting of sensing system 23 that utilizes laser diode 21 to send moved the interference image that is produced by this sphere institute laser light reflected because of spin, and judges direction and the distance that spin sphere and optical displacement detection device relatively move by analysis circuit.
In the small-sized spin optical displacement detection device 2 of the present utility model, spin 22 is located on the outer mask 24, the mode of exposing this mask with part spin 22 is provided with, by this, when operation small-sized spin optical displacement detection device of the present utility model, promote the part that this spin 22 is exposed, rotation by spin 22, make when laser diode 21 is radiated on the spin, by the interference image of sensing system 23 detectings because of the reflection spin rolling diverse location that forms, and the analysis circuit system in this sensing system 23 of mat carries out the image compare of analysis, and judge the moving direction and the distance of spin, and and then according to gained data output electric signal the vernier on the guidance display moves.
According to small-sized spin optical displacement detection device of the present utility model, owing to the optical mouse apparatus of its image analytic degree far above use light emitting diode (LED), its image analytic degree can reach more than the 3500dpi.
Pass through the utility model, if be applied on the small-sized spin optical displacement detection device, can utilize the spin of only several millimeters (for example 5 millimeters) diameters can control computer upstream target easily moves, relative in view of the above size that has reduced displacement detection apparatus and thickness, and owing to utilize the lasing fluorescence diode, be able under very low consumed power, that is under the situation of economizing the energy, operate, and can be applicable to various slim mobile electronic devices, notebook computer for example, personal digital assistant, electronic equipments such as mobile phone, and following possible conformability electronic equipment, therefore the utmost point helps to further develop out more small-sized, more slim electronic equipment has industrial utilization.
The utility model describes the utility model in detail by above-mentioned preferred embodiment, and only above-mentioned specific embodiment is only in order to explanation the utility model, and not in order to limit scope of the present utility model.All in the spirit and scope that the utility model disclosed, know this skill person and can do various modifications and variation to it and all still belong to scope of the present utility model.
Claims (6)
1. a small-sized spin optical displacement detection device is characterized in that, comprising:
One is used to control the spin of arrangement for detecting displacement;
One is used to the laser diode launching laser and expose to this spin sphere; And
One sensing apparatus, its comprise again a sensing element and that is used to be received from this spin interference image that spheric reflection forms be used for compare of analysis spin sphere move the diverse location interference image that produces and judge the relatively move analysis circuit of direction and distance of spin sphere and optical displacement detection device.
2. small-sized spin optical displacement detection device as claimed in claim 1 is characterized in that: this laser diode is a surface emitting laser transistor.
3. small-sized spin optical displacement detection device as claimed in claim 1, it is characterized in that: the diameter of this spin is less than 1.5cm.
4. small-sized spin optical displacement detection device as claimed in claim 1 is characterized in that: this sensing element is one of complementary metal oxide semiconductor (CMOS), photoelectric crystal, charge coupled cell or its combination.
5. small-sized spin optical displacement detection device as claimed in claim 1 is characterized in that: this laser diode and sensing element are the integrated component of a common encapsulation; Wherein sensing element is one of complementary metal oxide semiconductor (CMOS), photoelectric crystal, charge coupled cell or its combination.
6. small-sized spin optical displacement detection device as claimed in claim 1 is characterized in that: this spin is positioned on the outer mask, and the part of spin is exposed outside this outside mask.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201303135U CN2845012Y (en) | 2005-10-31 | 2005-10-31 | Small-sized spin optical displacement detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201303135U CN2845012Y (en) | 2005-10-31 | 2005-10-31 | Small-sized spin optical displacement detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2845012Y true CN2845012Y (en) | 2006-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201303135U Expired - Fee Related CN2845012Y (en) | 2005-10-31 | 2005-10-31 | Small-sized spin optical displacement detection device |
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| Country | Link |
|---|---|
| CN (1) | CN2845012Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105311840A (en) * | 2014-06-04 | 2016-02-10 | 诠亚科技股份有限公司 | Position and track detection device |
-
2005
- 2005-10-31 CN CNU2005201303135U patent/CN2845012Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105311840A (en) * | 2014-06-04 | 2016-02-10 | 诠亚科技股份有限公司 | Position and track detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061206 Termination date: 20091130 |