CN1293455C - Optical inputting device capable of determining reflector character - Google Patents
Optical inputting device capable of determining reflector character Download PDFInfo
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- CN1293455C CN1293455C CNB031236111A CN03123611A CN1293455C CN 1293455 C CN1293455 C CN 1293455C CN B031236111 A CNB031236111 A CN B031236111A CN 03123611 A CN03123611 A CN 03123611A CN 1293455 C CN1293455 C CN 1293455C
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- reflecting surface
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- incident light
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Abstract
The present invention relates to an optical input device capable of judging the property of a reflecting surface. Firstly, light source equipment projects incident light to the reflecting surface; based on the reflection law, the incident light projected to the reflecting surface respectively forms reflecting light or diffused light or refracted light, wherein a first optical sensing device of the optical input device can receive partial diffused light in order to calculate total diffused light; a second optical sensing device can sense the reflection light; a microprocessor calculates the energy value of the refracted light according to the law of conservation of energy. Further, whether light rays pass through the reflecting surface to form the refracted light is judged. If the light rays pass through the reflecting surface, the reflecting surface is made from light transmission material. In reverse, the reflecting surface is not made from the light transmission material.
Description
Technical field
The present invention relates to a kind of optical input device, refer to a kind of optical inputting device capable of determining reflector character especially.
Background technology
For example be in the input media of optical mouse, its principle mainly is by judging the formed inhomogeneous or protruding mobile situation of judging optical mouse of nick in using planar (for example desktop or mouse pad) surface; And when optical mouse was applied to have on the using planar of unlike material, the OPTICAL SENSORS that is installed in the optical mouse will be controlled the generation of suitable photosignal according to time shutter and gain.
Yet, when known optical mouse for example is used in on the clear applications plane of glass material the time, because the incident light that light supply apparatus projected of optical mouse almost can penetrate glass all, so the reflected light that the received self-application plane reflection of OPTICAL SENSORS is returned will level off to zero, cause to produce suitable photosignal and control the optical mouse start, thereby weaken the judgement of optical mouse greatly, on foot increase user's inconvenience.More than be not very good.
Summary of the invention
Fundamental purpose of the present invention is that a kind of optical inputting device capable of determining reflector character is being provided, and improves the use flexibility ratio and the elasticity of optical mouse.
For realizing above-mentioned purpose, a kind of optical inputting device capable of determining reflector character proposed by the invention mainly comprises:
One light source, in order to project an incident light, this incident light is projected on the reflecting surface by the opening of this optical input device bottom;
One first OPTICAL SENSORS, be to receive the diffusion light that this incident light is produced on this reflecting surface, in order to calculating a total diffusion light, and judge according to this diffusion light that the inhomogeneous and nick that the surface had of this reflecting surface shows especially and resemble, with distance and the direction that determines that this optical input device moves;
One second OPTICAL SENSORS, the reflected light that on this reflecting surface, is produced in order to this incident light of sensing;
One microprocessor is according to this total diffusion light, this reflected light, reaches the value of this incident light, to calculate the value that this incident light penetrates the refract light of this reflecting surface, judges the character of this reflecting surface according to this.
Described optical inputting device capable of determining reflector character, wherein this microprocessor be according to following formula to calculate this refract light measuring value:
Refract light=incident light-reflected light-total diffusion light.
Described optical inputting device capable of determining reflector character, it is an optical mouse.
Described optical inputting device capable of determining reflector character, wherein this first OPTICAL SENSORS is to be installed in this opening top.
Described optical inputting device capable of determining reflector character, wherein this second OPTICAL SENSORS is to be installed on the reflection of incident light light path that projects corresponding to this light source.
Described optical inputting device capable of determining reflector character, wherein this light source is a LED crystal particle.
In sum, because the present invention is provided with first OPTICAL SENSORS to come the sensing diffusion light, set up second OPTICAL SENSORS come the sensing reflected light on the reflected light path in optical input device, and according to the energy value of law of conservation of energy with the calculating refract light, so optical input device can be judged the character and the degree of roughness of reflecting surface automatically by the refract light energy value that is calculated, immediately switch to suitable use pattern in order to optical input device, significantly expand the applicable field of optical input device, improve and use flexibility ratio and simplicity.
Description of drawings
Fig. 1 is the cut-open view that the embodiment of the invention is applied to optical mouse inside;
Fig. 2 is the one-tenth phase synoptic diagram of incident light in the optical facilities of the embodiment of the invention.
Embodiment
For the clearer explanation of energy technology contents of the present invention, as follows especially exemplified by a preferred embodiment.
See also the enforcement state of Fig. 1 preferred embodiment of the present invention, the optical input device of present embodiment is an optical mouse 1 preferably, Fig. 1 shows that the bottom of optical mouse 1 offers an opening 10, and the inner space group is provided with a light supply apparatus 11, a guiding device 12, one first OPTICAL SENSORS 13, one second OPTICAL SENSORS 14 and a microprocessor 15.Wherein, light supply apparatus 11 is preferably a LED crystal particle (LED Die), or can be other equivalent luminophors.
As shown in Figure 1, the incident light 1 that the light supply apparatus 11 of present embodiment is projected is to be set in parallel with reflecting surface 2, and incident light 1 just can corresponding be projected to first lens 121 of guiding device 12, after first lens 121 focus on incident light 1, by the reflection of first prism 123 and second prism 124, accurately guide, make it 10 to be projected on the reflecting surface 2 incident light 1 by opening of optical mouse 1.Wherein, be noted that light supply apparatus 11 also can be arranged at guiding device top, but guiding device need do appropriateness and adjust design, be beneficial to receive incident light 1, and incident light 1 led be projected to reflecting surface 2; Certainly light supply apparatus 11 also tiltable be arranged at optical mouse 1 inside, in order to incident light 1 directly or via being projected to after the lens focus on the reflecting surface 2.
As shown in Figure 2, according to reflection law, incident light 1 will correspondence produce one reflected light R1 on reflecting surface 2 after projecting reflecting surface 2, and wherein, the angle of incident light 1 and reflecting surface 2 equals reflected light R1 and 2 formed angles of reflecting surface.In addition, based on the light diffusion principle, so incident light 1 is after touching reflecting surface 2, except generation reflected light R1, also can be subjected to the influence and then the generation complete diffusion light (Lambertian) in various degree of the reflecting surface 2 of unlike material, for example when reflecting surface 2 was minute surface, incident light 1 will reflect fully and produce reflected light R1, does not produce or produce micro-diffusion light; And when reflecting surface 2 materials were the magnesian coarse plane of white, then incident light 1 will spread fully.Certainly, if reflecting surface 2 itself has light through characteristic (for example for glass material), then part incident light 1 will penetrate through reflective face 2 and form refract light.
See also Fig. 2, show after incident light 1 is projected to reflecting surface 2, form the synoptic diagram of reflected light R1, refract light Rr and diffusion light L respectively.As shown in the figure, incident light 1 will form one reflected light R1 and form the diffusion light L of complex trace scattering to all the winds and part incident light 1 may penetrate through reflective face 2 and form refract light Rr on reflecting surface 2 on the reflecting surface 2.Wherein, first OPTICAL SENSORS 13 is to be arranged at directly over the opening 10, be projected to the diffusion light L of first OPTICAL SENSORS 13 after focusing on via second lens 122 in order to receiving unit, and according to complete mathematical model that complete diffusion light had, to calculate the energy summation f (L) of diffusion light L: 14 of second OPTICAL SENSORS are arranged on the reflected light R1 path of the incident light 1 that is projected corresponding to light source 11, in order to receive and to calculate the energy value of reflected light R1.Wherein, second lens 122 are to be coaxial setting with first OPTICAL SENSORS 13.
Based on law of conservation of energy, microprocessor 15 can be according to following formula to calculate the energy value of refract light Rr:
The refract light Rr=incident light 1-total diffusion light f of reflected light R1-(L)
If energy value＞0 of refract light Rr, expression reflecting surface 2 is made by a light-permeable material, transparent material normally, so the light supply apparatus 11 of optical mouse 1 is analysed the incident light 1 that projects almost all can penetrate through reflective face 2, therefore first OPTICAL SENSORS 13 and second OPTICAL SENSORS, the 14 received reflected light R1 that reflect from reflecting surface 2 will level off to zero.Therefore, under the limited prerequisite of received reflected light R1, optical mouse 1 is difficult to produce suitable photosignal and controls its start, so microprocessor 15 will start a switching machine system in order to optical mouse 1 is switched to the pattern of start on the reflecting surface 2 that is adapted at transparent material.
Otherwise, if energy value=0 of refract light Rr, expression reflecting surface 2 is made by the material of light-permeable not, then first OPTICAL SENSORS 13 of optical mouse 1 can be directly judged by diffusion light 1 that inhomogeneous and nick that reflecting surface 2 surfaces are had shows especially and is resembled, the ratio that promptly calculates reflected light R1 and total diffusion light f (L) is to learn the degree of roughness of reflecting surface 2, with distance and the direction that determines that optical mouse 1 moves.
The foregoing description only has been to be convenient to explanation and to give an example, and the interest field that the present invention advocated is from should being as the criterion so that patent claim is described, but not only limits to the foregoing description.
Claims (6)
1, a kind of optical inputting device capable of determining reflector character is characterized in that, mainly comprises:
One light source, in order to project an incident light, this incident light is projected on the reflecting surface by the opening of this optical input device bottom;
One first OPTICAL SENSORS, be to receive the diffusion light that this incident light is produced on this reflecting surface, in order to calculating a total diffusion light, and judge according to this diffusion light that the inhomogeneous and nick that the surface had of this reflecting surface shows especially and resemble, with distance and the direction that determines that this optical input device moves;
One second OPTICAL SENSORS, the reflected light that on this reflecting surface, is produced in order to this incident light of sensing;
One microprocessor is according to this total diffusion light, this reflected light, reaches the value of this incident light, to calculate the value that this incident light penetrates the refract light of this reflecting surface, judges the character of this reflecting surface according to this.
2, optical inputting device capable of determining reflector character according to claim 1 is characterized in that, wherein this microprocessor be according to following formula to calculate this refract light measuring value:
Refract light=incident light-reflected light-total diffusion light.
3, optical inputting device capable of determining reflector character according to claim 1 is characterized in that, it is an optical mouse.
4, optical inputting device capable of determining reflector character according to claim 1 is characterized in that, wherein this first OPTICAL SENSORS is to be installed in this opening top.
5, optical inputting device capable of determining reflector character according to claim 1 is characterized in that, wherein this second OPTICAL SENSORS is to be installed on the reflection of incident light light path that projects corresponding to this light source.
6, optical inputting device capable of determining reflector character according to claim 1 is characterized in that, wherein this light source is a LED crystal particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031236111A CN1293455C (en) | 2003-05-09 | 2003-05-09 | Optical inputting device capable of determining reflector character |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031236111A CN1293455C (en) | 2003-05-09 | 2003-05-09 | Optical inputting device capable of determining reflector character |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1549101A CN1549101A (en) | 2004-11-24 |
| CN1293455C true CN1293455C (en) | 2007-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031236111A Expired - Fee Related CN1293455C (en) | 2003-05-09 | 2003-05-09 | Optical inputting device capable of determining reflector character |
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| Country | Link |
|---|---|
| CN (1) | CN1293455C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251164Y (en) * | 1995-04-07 | 1997-04-02 | 段西京 | X,Y-axis separator for photoelectric mouse |
| WO2001031570A2 (en) * | 1999-10-27 | 2001-05-03 | Digital Ink, Inc. | Tracking motion of a writing instrument |
| US6501460B1 (en) * | 2001-09-05 | 2002-12-31 | Samsung Electro-Mechanics Co., Ltd. | Light-receiving unit for optical mouse and optical mouse having the same |
| CN2543140Y (en) * | 2001-11-22 | 2003-04-02 | 于君 | Photoelectric mouse |
-
2003
- 2003-05-09 CN CNB031236111A patent/CN1293455C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251164Y (en) * | 1995-04-07 | 1997-04-02 | 段西京 | X,Y-axis separator for photoelectric mouse |
| WO2001031570A2 (en) * | 1999-10-27 | 2001-05-03 | Digital Ink, Inc. | Tracking motion of a writing instrument |
| US6501460B1 (en) * | 2001-09-05 | 2002-12-31 | Samsung Electro-Mechanics Co., Ltd. | Light-receiving unit for optical mouse and optical mouse having the same |
| CN1404006A (en) * | 2001-09-05 | 2003-03-19 | 三星电机株式会社 | Optical receiving device of photoelectric mouse and the opticoelectric mouse with the same optical receiving device |
| JP2003084908A (en) * | 2001-09-05 | 2003-03-20 | Samsung Electro Mech Co Ltd | Receiving part structure of optical mouse, and optical mouse having the structure |
| CN2543140Y (en) * | 2001-11-22 | 2003-04-02 | 于君 | Photoelectric mouse |
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| Publication number | Publication date |
|---|---|
| CN1549101A (en) | 2004-11-24 |
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