CN200990070Y - Optical inductive components and optical module for optical mouse - Google Patents
Optical inductive components and optical module for optical mouse Download PDFInfo
- Publication number
- CN200990070Y CN200990070Y CNU2006201355079U CN200620135507U CN200990070Y CN 200990070 Y CN200990070 Y CN 200990070Y CN U2006201355079 U CNU2006201355079 U CN U2006201355079U CN 200620135507 U CN200620135507 U CN 200620135507U CN 200990070 Y CN200990070 Y CN 200990070Y
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- light
- crystal grain
- optical mouse
- optical
- sensing
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Abstract
The utility model discloses a photoinduction element of an optical mouse. The utility model comprises an optically sensing grain, a photodiode grain, an optical module that can be applied to the optical mouse and an element that receives and emits the light with a light-emitting element in the optical module. The optically sensing grain can continuously retrieve the image of the working face below the optical mouse; the photodiode grain detects the intensity or the power of the light that the optically sensing grain receives; if the intensity or the power of the light is beyond a limited value, the photodiode grain then adjusts the supplied power of the light-emitting element and makes the intensity or the power of the light that the photodiode grain detects kept in an acceptable range.
Description
Technical field
The utility model relates to a kind of photoinduction element and optical module of optical mouse, particularly relates to a kind of photoinduction element and relevant optical module with function of safety protection.
Background technology
Computing machine institute's role in human lives now is more and more important and diversified, goes up as document from past work and handles or the instrument of sequential operation, to the video-audio and the electronic game amusement of complexity today.Shoulder the mouse of interface control important task, also upgrade progressive gradually along with the enhancing of computer function, its induction technology further uses the laser diode that produces same tone (coherent) light from using traditional spin, pulley and light-emitting diode.Therefore mouse function extends to various additional functions such as having picture convergent-divergent, identification of fingerprint gradually from simple cursor control, allows the user just can easily control computing machine with a finger.
Fig. 1 is the existing bottom view of using the optical mouse 10 of laser diode 18.Optical mouse 10 comprises a bottom surface 12 and and is arranged at opening 14 on the bottom surface 12, and bottom surface 12 can be placed on a desktop or the mouse pad.Having in the optical mouse 10 one can lasing laser diode 18, this laser can be via opening 14 surface of directive mouse pad.The circuit of optical mouse 10 inside can receive and analyze the optical signalling that reflects back from mouse pad, and the signal that last optical signalling is converted to displacement data exports computing machine (scheming not shown) to by cable 16.Can certainly Wireless transmission mode replace cable 16, the signal of displacement data can be sent to computing machine equally.
Fig. 2 is the exploded view of optical mouse 10 inner members among Fig. 1.Optical mouse 10 comprises a light element 21, that is arranged at opening 14 tops in addition to be located at the circuit board 22, of light element 21 tops and to be located at a photoinduction element 24 and a shading cover 26 in the perforate 221 of circuit board 22, and laser diode 18 is fixed on the circuit board 22 again.Photoinduction element 24 energy quickly picking optical mouse 10 slip over the image that the surface presented of mouse pad, judge the displacement of optical mouse 10 by the difference of image before and after the comparison.26 of shading covers are to be used for the direct directive photoinduction element 24 of light of avoiding laser diode 18 to send.
With reference to figure 3 can be more than you know the emission and the reception process of laser in the optical modules 30 in the optical mouse 10.Same tone (coherent) light 31 that can avoid laser diode 18 to be sent owing to the shape of shading cover 26 directly goes towards photoinduction element 24, so most of light 31 can be worn through light element 21 again and penetrate, and directly passes through the opening 14 of bottom surface 12 then.Light 31 touches opaque workplace (as: desktop or mouse pad) meeting after 80s and produces reflection ray 32.This reflection ray 32 is by the through hole 211 of light element 21 and entered in the photoinduction element 24 by unthreaded hole 243, and sensed crystal grain (sensor chip) 241 becomes image after receiving.This sensing crystal grain 241 is on the lead frame (leadframe) 242 that is fixed in the photoinduction element 24.
Removing workplace 80 when optical mouse 10 has a segment distance, and laser is easy to shine accidentally human eye, if the duration is after the permanent injury that will cause eyeball for a long time.In addition, the user may have the inertia misoperation of upwards mentioning when controlling optical mouse 10, for example: computing machine away from keyboard and will put down optical mouse 10, if optical mouse 10 is still changed this action of upwards mentioning and thought displacement data by mistake, then certainly will increase the puzzlement that to confirm cursor in the follow-up use again on foot.Especially use the optical mouse 10 of laser diode 18 that this puzzlement is arranged especially, even if because workplace 80 leaves the bottom surface 12 about 10 millimeters displacements that still can handle vernier.
In sum, need badly on the market and want a kind of photoinduction element and relevant optical module, can protect human eye to avoid the improper irradiation of Stimulated Light, can ignore the lasting input of image that misoperation causes again with security protection and false action-proof function.
The utility model content
The purpose of this utility model is to provide a kind of photoinduction element and optical module of optical mouse, and whether it is lower than threshold value by intensity or the power that detecting receives light, and the suitable electric power that does not cut off the supply light-emitting component automatically of decision.Can prevent that so light from exposing and injure human eye, and not be subjected to the misoperation of upwards mentioning and influence the correct location of cursor.
Another purpose of the present utility model is to provide a kind of optical module that is applied to have in the optical mouse circuit controls, whether it is higher than a header value or is lower than threshold value by intensity or the power that detecting receives light, and adjust the electric power of light-emitting component automatically, so that the intensity of light or power are in tolerance interval.
For reaching above-mentioned purpose, the utility model discloses a kind of photoinduction element that can be applicable to the optical mouse of optical module in the optical mouse, and it comprises sensing crystal grain and a photodiode crystal grain.This light sensing crystal grain can capture the image of this optical mouse below workplace continuously, that is the optical signalling of changing this workplace reflection ray is digital signal, and this photodiode crystal grain is this sensing crystal grain of the detecting intensity or power of the light of accepting at present again.
This sensing crystal grain and this photodiode crystal grain are to be fixed in jointly on a lead frame or the substrate, or this sensing crystal grain is to be fixed on a lead frame or the substrate, and this photodiode crystal grain then is stacked over this sensing grain surface.
The utility model discloses the optical module of an optical mouse in addition, and it comprises a photoinduction element, a light element and a light-emitting component.This light-emitting component this light element of directive that can emit beam, light produces at least total reflection after entering this light element, wear then and penetrate this light element and in the through hole by this light element of workplace reflected back of optical mouse below, light through this through hole can image in this photoinduction element, if the intensity or the power of light exceed a threshold value, then adjust the supply electric power of this light-emitting component, and make this photodiode crystal grain detect the intensity or the tolerance interval of power in threshold value of this light.
Advantage of the present utility model is; design by above-mentioned photoinduction element and optical module; make optical mouse with this photoinduction element and optical module; have security protection and false action-proof function; can protect human eye to avoid the improper irradiation of Stimulated Light, can ignore the lasting input of image that misoperation causes again.
Description of drawings
Fig. 1 is the bottom view of existing optical mouse;
Fig. 2 is the exploded view of optical mouse inner member among Fig. 1;
Fig. 3 is the side view of optical module among Fig. 2;
Fig. 4 is the side view of photoinduction element of the optical mouse of the utility model one embodiment;
Fig. 5 is the side view of the photoinduction element of another embodiment of the utility model;
Fig. 6 is the side view of optical module of the optical mouse of the utility model one embodiment; And
Fig. 7 is the side view of optical module of the optical mouse of another embodiment of the utility model.
The main element symbol description:
10 optical mouse, 12 bottom surfaces
14 openings, 16 cables
18 laser diodes, 21 light elements
22 circuit boards, 24 photoinduction elements
26 shading covers, 30 optical modules
31,32 light, 40,50 photoinduction elements
41 sensing crystal grain, 42 lead frames
43 packing colloids, 44 outer pins
45 photodiode crystal grain, 46,56 plain conductors
60,70 optical modules, 61 driving elements
62 circuit boards, 71 leads
72 circuit boards, 80 workplaces
221 perforates of 211 through holes
241 sensing crystal grain, 242 lead frames
243,431 be subjected to unthreaded hole
Embodiment
Fig. 4 is the side view of the photoinduction element 40 of the utility model optical mouse.Photoinduction element 40 comprises sensing crystal grain 41 and a photodiode crystal grain 45, this sensing crystal grain 41 and this photodiode crystal grain 45 are fixed on the lead frame 42 (or substrate) jointly, and by the transmission path of plain conductor 46 as two crystal grain 41,45 and 42 electric signals of lead frame.Packing colloid (encapsulant) the 43rd, the circuit of protection photoinduction element 40 inside, and be provided with one on packing colloid 43 surfaces and be subjected to unthreaded hole 431.Sensing crystal grain 41 like this could be accepted the light that the workplace below the optical mouse reflects, and transfers the optical signalling of imaging to digital signal.There is the outer pin 44 that inputs or outputs end as signal packing colloid 43 both sides, and are somebody's turn to do outer pin 44 in order to be fixed on the circuit board.
Be compared to that sensing crystal grain 41 and this photodiode crystal grain 45 are to be fixed in lead frame 42 jointly among Fig. 4, the side view of the photoinduction element 50 of another embodiment shown in Figure 5, wherein sensing crystal grain 41 still is directly fixed on the lead frame 42 (or substrate), but 45 of photodiode crystal grain are stacked over this sensing crystal grain 41 surfaces, equally by the transmission path of plain conductor 56 as two crystal grain 41,45 and 42 electric signals of lead frame.
Fig. 6 is the side view of the optical module 60 of the utility model optical mouse.The same tone light 31 that the shape of shading cover 26 can avoid laser diode 18 to send directly goes towards photoinduction element 40, and therefore most of light 31 can be penetrated through wearing behind the light element 21 again, directly passes through the opening 14 of bottom surface 12 then.Light 31 touches opaque workplace (as: desktop or mouse pad) generation reflection ray 32 after 80s.Entered in the photoinduction element 40 by unthreaded hole 431 in the through hole 211 of this reflection ray 32 via light element 21, and sensed crystal grain 41 become image after receiving.This sensing crystal grain 41 is on the lead frame 42 that is fixed in the photoinduction element 40.Adopt general light emitting diode when light-emitting component but not during laser diode 18,, therefore can in through hole 211, lens be set because the light that is produced is non-same tone, with light focusing on sensing crystal grain 41.
Removing workplace 80 when bottom surface 12 has a segment distance, and therefore the intensity or the power that are reflected back toward the light in the through hole 211 of seeking light unit 21 can reduce.Yet because the laser beam centrality is preferable, even if workplace 80 leaves the bottom surface 12 about 10 millimeters displacements that still can handle vernier reluctantly.For avoiding this one to use situation to take place improperly, intensity that can be by photodiode crystal grain 45 these sensing crystal grain 41 present light of accepting of detecting or power are monitored this and are left distance.When intensity was lower than threshold value, this photodiode crystal grain 45 can trigger the supply electric power of these sensing crystal grain 41 and then temporarily disconnected laser diode 18.The intensity of light or power when for example getting workplace 80 and leaving bottom surface 12 and equal 2 millimeters and be set at this time threshold value just can prevent that laser from leaking outside and accidentally injure eyes, or even are not subjected to the misoperation of upwards mentioning and influence the correct location of cursor.
In addition, laser diode 18 may change output power along with the variation of environment temperature or lasting service time, therefore can set a header value.Be higher than this header value if laser diode 18 detects the intensity or the power of sensing crystal grain 41 light of accepting, then can adjust the supply electric power of this laser diode 18, make intensity or power after light reflects be lower than this header value.
If sensing crystal grain 41 can't be integrated the function of direct driving laser diode 18, a driving element 61 can be set on circuit board 62, and control the drive current of laser diodes 18 by driving element 61.
As shown in Figure 7, optical module 70 is that the outer pin 44 with photoinduction element 40 is connected with lead 71 with laser diode 18, and does not need that just directly driving laser diode 18 is luminous or do not work by circuit board 72.
The light-emitting component of the utility model optical module is not limited to the disclosed laser diode of embodiment, and it can also be a light emitting diode, for example: produce ultrared light emitting diode.
Claims (12)
1. the photoinduction element of an optical mouse can be responded to the light that optical mouse below workplace reflects, and it is characterized in that this photoinduction element comprises: one accepts the light of this workplace reflection and the sensing crystal grain of imaging; One photodiode crystal grain is detected the intensity or the power of this sensing this light that crystal grain is accepted; And one have the packing colloid that is subjected to unthreaded hole, and this packing colloid envelopes this sensing crystal grain and this photodiode crystal grain.
2. the photoinduction element of optical mouse according to claim 1 is characterized in that, other comprises a lead frame or substrate, and this sensing crystal grain is fixed on this lead frame or this substrate.
3. the photoinduction element of optical mouse according to claim 2 is characterized in that, this photodiode crystal grain is fixed on this lead frame or this substrate.
4. the photoinduction element of optical mouse according to claim 2 is characterized in that, this photodiode crystal grain is fixed in the surface of this sensing crystal grain.
5. the photoinduction element of optical mouse according to claim 2 is characterized in that, this sensing crystal grain and this photodiode crystal grain are by a plurality of plain conductors and this lead frame or the electrical connection of this substrate.
6. the photoinduction element of optical mouse according to claim 1 is characterized in that, this sensing crystal grain and this photodiode crystal grain are electrically connected by at least one plain conductor.
7. the optical module of an optical mouse can capture the image of optical mouse below workplace, and it is characterized in that this optical module comprises: one can produce the light-emitting component of light; One light element is accepted this light and is entered, and produces at least total reflection in inside, can be by the workplace of this optical mouse below this light element of reflected back again by the light of total reflection; And a photoinduction element, comprising sensing crystal grain and a photodiode crystal grain, this sensing crystal grain sensing passes the light of this workplace reflection of this light element, and this photodiode crystal grain is detected the intensity or the power of this light of this sensing crystal grain institute sensing; The intensity or the power that detect this light by this photodiode crystal grain are controlled intensity or the power that this light-emitting component emits beam.
8. the optical module of optical mouse according to claim 7 is characterized in that, other comprises a circuit board, and this light-emitting component and this photoinduction element are fixed on this circuit board.
9. the optical module of optical mouse according to claim 8 is characterized in that, other comprises the driving element of being located on this circuit board, and this photoinduction element is controlled this driving element, and this driving element can be supplied with this light-emitting component electric power.
10. the optical module of optical mouse according to claim 7 is characterized in that, this light-emitting component and this photoinduction element directly are connected with lead, and this light-emitting component is accepted the driving electric of this photoinduction element and emitted beam again.
11. the optical module of optical mouse according to claim 7 is characterized in that, this light-emitting component is a light emitting diode or a laser diode.
12. the optical module of optical mouse according to claim 7 is characterized in that, other comprises a shading cover, in order to this photoinduction element of the direct directive of the light of avoiding this light-emitting component to send.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201355079U CN200990070Y (en) | 2006-09-19 | 2006-09-19 | Optical inductive components and optical module for optical mouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201355079U CN200990070Y (en) | 2006-09-19 | 2006-09-19 | Optical inductive components and optical module for optical mouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200990070Y true CN200990070Y (en) | 2007-12-12 |
Family
ID=38941106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201355079U Expired - Lifetime CN200990070Y (en) | 2006-09-19 | 2006-09-19 | Optical inductive components and optical module for optical mouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200990070Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8243016B2 (en) | 2008-09-05 | 2012-08-14 | Pixart Imaging Inc. | Optical pointing device with integrated optical components and related electronic apparatus |
| CN103324353A (en) * | 2012-03-23 | 2013-09-25 | 原相科技股份有限公司 | Optical touch control device and optical touch control method for detecting displacement |
| WO2021017512A1 (en) * | 2019-07-30 | 2021-02-04 | 东莞市欧跃电子科技有限公司 | Ic integrated structure for optical mouse |
-
2006
- 2006-09-19 CN CNU2006201355079U patent/CN200990070Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8243016B2 (en) | 2008-09-05 | 2012-08-14 | Pixart Imaging Inc. | Optical pointing device with integrated optical components and related electronic apparatus |
| CN103324353A (en) * | 2012-03-23 | 2013-09-25 | 原相科技股份有限公司 | Optical touch control device and optical touch control method for detecting displacement |
| CN103324353B (en) * | 2012-03-23 | 2016-08-17 | 原相科技股份有限公司 | Can optical touch control device and optical touch control method for detecting displacement |
| WO2021017512A1 (en) * | 2019-07-30 | 2021-02-04 | 东莞市欧跃电子科技有限公司 | Ic integrated structure for optical mouse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |