CN2329043Y - Photoelectric sensing and measuring element - Google Patents
Photoelectric sensing and measuring element Download PDFInfo
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- CN2329043Y CN2329043Y CN97230106U CN97230106U CN2329043Y CN 2329043 Y CN2329043 Y CN 2329043Y CN 97230106 U CN97230106 U CN 97230106U CN 97230106 U CN97230106 U CN 97230106U CN 2329043 Y CN2329043 Y CN 2329043Y
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Abstract
The utility model discloses a photoelectric sensing andproject measuring element, comprising a unit composed of at least one light-emitting element, at least one receiving element provided with a group of light sensitive components, an aureola, etc., wherein, the parts of the light receiving surface of the receiving element corresponding to the light sensitive component respectively form at least a group of two inclined planes or four inclined planes in the periphery, in order to be favorable for causing the near connecting light sources of diffusion or scattering to be reflected out from each inclined plane when the working light source is projected on the light receiving surface of the receiving element. So the light sensitive components are free from the influence of the interference of the near connecting light sources, and more accurate signals are obtained.
Description
The utility model relates to a kind of photoelectric sensing element, is meant a kind ofly when work light is projeced into the sensitive surface of its receiving element especially, can effectively make photosensory assembly not be subjected to closely to connect the influence that light source disturbs, and improves the photoelectric sensing element that signal receives accuracy rate.
Generally be applied to each light conduct coder of mouse, see also shown in Figure 1, comprise at least one coding grid wheel 60 substantially, light-emitting component 70 and receiving element 80, wherein light-emitting component 70 is located at coding grid wheel 60 contiguous places, take turns on 60 at these coding grid in order to the light source irradiation that light-emitting component 70 sends, this coding grid wheel 60 can be fixed on rotating shaft 50 with rotating manner by its central shaft hole, simultaneously with an actuating mechanism (as, trace ball) makes its rotation, on the periphery of coding grid wheel 60, be equipped with many transmittance sections 61, between adjacent two transmittance sections 61, a light tight part 62 all at interval, and at the periphery of this coding grid wheel 60, then be provided with a receiving element 80 of making by transmission substance, be provided with one group of adjacent photosensory assembly 81 in this receiving element 80, to receive light source via transmittance section 61 printing opacities.
When coding grid wheel 60 rotates, the light source that light-emitting component 70 sends is subjected to encoding on the grid wheel 60 light tight 62 and cover transmittance section 61 and the cutting of printing opacity, form working beam, when working beam touches photosensory assembly 81, i.e. produce power is when if coding grid wheel 60 rotates continuously, by obtaining sinusoidal waveform on the oscillograph, and obtain (0,0), (0,1), (1,1) and (1,0) four signals through rectification circuit, as shown in Figure 2, be the synoptic diagram that four kinds of signals produce.
Because each light-emitting component 70, receiving element 80 are structurally, taking turns 60 corresponding sensitive surfaces with the coding grid is to adopt planar design, therefore, when working beam contacts to the sensitive surface of receiving element 80, the disturbed condition of diffusion or scattering light source takes place easily.See also Fig. 3, shown in Figure 4, when coding grid wheel 60 rotates, photosensory assembly 81 receives the sinusoidal wave A that working beam produced of light-emitting component 70, B, reach square wave A1 through rectification circuit produced, B1, wherein C is that working beam 71 enters the diffusion that receiving element 80 causes and the jamming light source of scattering, the influence that this jamming light source C causes receiving element 80, referring to shown in Figure 5, wherein the waveform of B is theoretic sinusoidal waveform, but in fact, because light enters the stray light that receiving element 80 produces, at working beam 71 during not near photosensory assembly 81, oneself makes photosensory assembly 81 produce powers, therefore, produces the sine wave of X.
Observe this waveform as can be known, because jamming light source C, the waveform that causes photosensory assembly 81 to be produced can't reach low-yield, be working beam 71 not during tactility optical assembly 81, promptly be interfered and produce power, and working beam 71 left, because of making the energy of photosensory assembly 81, jamming light source C can't discharge, therefore, just the sinusoidal energy value that shows at oscillograph can't be obtained the sine wave as A, B, the rectangular wave that causes rectification circuit to produce is different from the square wave of A1, B1.
Therefore, the purpose of this utility model just is to provide a kind of photoelectric sensing element, when light source projects during in the sensitive surface of receiving element, can effectively make photosensory assembly not be subjected to closely to connect the influence that light source disturbs, and improves signal and receives accuracy rate.
Further purpose of the present utility model provides a kind of photoelectric sensing element, and the work light of its light-emitting component can project a branch of or the multi beam working beam under control.
In order to realize the foregoing invention purpose, a kind of photoelectric sensing element of the utility model, comprise at least one light-emitting component, at least one receiving element and at least one halo, wherein establish the light-emitting component that a light source that is sent can be radiated at this halo respectively at the contiguous place of each halo, the periphery of each halo is established a receiving element respectively, be respectively equipped with one group of adjacent photosensory assembly in each receiving element, reception is via the light signal of each halo working beam, on the surface of described receiving element, with respect to the sensitive surface position of its photosensory assembly, form at least one group two inclined-plane respectively at its periphery.
Described each sensitive surface position is equipped with one in the interposition of the photosensory assembly adjacent with respect to the one group it is divided into two-part groove, makes these sensitive surface positions form at least one group four inclined-plane respectively at its periphery and groove.
Can be coated with the material of reflective or delustring on the inclined-plane on described receiving element surface.
On the surface of described light-emitting component, the surperficial position with respect to the photosensory assembly of its receiving element forms at least one group two inclined-plane respectively at its periphery.
On the surface of described each light-emitting component, be equipped with one with respect to the interposition at the surperficial position of the photosensory assembly of its receiving element it is divided into two-part groove, make these surperficial positions form at least one group four inclined-plane respectively at its periphery and groove.
Because above design, the utility model is on the position of sensitive surface with respect to photosensory assembly of its receiving element, form two inclined-planes or four inclined-planes respectively at its periphery, and can on each inclined-plane, be coated with reflective or delustring material, when light source projects during to the sensitive surface of receiving element, cause the light that closely connects of diffusion or scattering jamming light source to go out, can effectively make photosensory assembly not be subjected to closely to connect the influence that light source disturbs, improve signal and receive accuracy rate from its each inclined-plane refraction.
Below by the drawings and specific embodiments the utility model is described in further detail again.
Fig. 1 is the synoptic diagram that photoelectric sensing element is taken turns with respect to the coding grid in the prior art:
Fig. 2 obtains the synoptic diagram of (0,0), (0,1), (1,1) and (1,0) four signals when rotating continuously for coding grid wheel shown in Figure 1;
Fig. 3 enters the synoptic diagram that receiving element causes the jamming light source of diffusion and scattering for working beam in the prior art;
Fig. 4 is when coding grid wheel rotates in the prior art, and the sine that working beam produced that photosensory assembly receives light-emitting component involves the theoretical value synoptic diagram of the square wave that produces through rectification circuit;
Fig. 5 is that photosensory assembly received the actual value and the ideal value synoptic diagram of the sine wave that working beam produced of light-emitting component when coding grid wheel rotated in the prior art;
The embodiment synoptic diagram that Fig. 6 uses for the utility model;
Fig. 7 obtains the synoptic diagram of (0,0), (0,1), (1,1) and (1,0) four signals when rotating continuously for the utility model halo;
When Fig. 8 is projected to the sensitive surface of receiving element for working beam of the present utility model, the synoptic diagram of beam path;
When Fig. 9 was the receiving element reception working beam of the utility model and theory, the sine of its generation involved the comparison diagram of square wave;
Figure 10 is the light-emitting component on the utility model four inclined-planes and the outside drawing of receiving element;
The halo of another form of Figure 11 the utility model is with respect to the synoptic diagram of photoelectric sensing element.
See also Fig. 6 and shown in Figure 9, the utility model comprises at least one light-emitting component 1, at least one halo 2 and at least one receiving element 3, wherein:
Light-emitting component 1 is to be located at the contiguous place that is positioned at halo 2 in the present embodiment, and the light source projects of sending in order to light-emitting component 1 is on this halo 2.
Receiving element 3, be that light-transmitting materials is made, be located at the periphery of halo 2, and position with respect to light-emitting component 1, be provided with on one group in this receiving element 3, following adjacent photosensory assembly 31, to receive working beam via these transmittance section 22 projections, on the position of the sensitive surface of receiving element 3 with respect to photosensory assembly 31, form two inclined-planes or four inclined-planes 32 respectively at its periphery, also can on each inclined-plane 32, be coated with reflective or delustring material, when being projeced into the sensitive surface of receiving element 3 in order to working beam, cause the light source that closely connects of diffusion or scattering to go out from its each inclined-plane refraction, as shown in Figure 8, so, this scrambler can be avoided closely connecing the interference of light sources phenomenon, and obtains signal more accurately.
When halo 2 is taken turns when changeing, the light source that light-emitting component 1 sends is subjected on the halo 2 light tight 23 and cover transmittance section 22 and the cutting of printing opacity, forms working beam 11, when working beam 11 touches sensitization crystalline substance 31, with regard to produce power, when rotating continuously, by obtaining sinusoidal waveform on the oscillograph as if halo 2, and obtain (0 through rectification circuit, 0), (0,1), (1,1) and (1,0) four signals, as shown in Figure 7.
See also shown in Figure 9, when halo 2 is subjected to the wheel commentaries on classics, the light source that light-emitting component 1 sends is subjected on the halo 2 light tight 23 and cover transmittance section 22 and the cutting of printing opacity, by available sinusoidal waveform on the oscillograph, and the rectangular wave that obtains through rectification circuit, wherein the waveform of D, D1 is that theoretic sine involves square wave: the waveform of E, E1 is that actual sine involves square wave; The waveform of F, F1 is that sine of the present utility model involves square wave.
From Fig. 8, shown in Figure 9ly find out, working beam 11 causes the light that closely connects of diffusion or scattering jamming light source to go out from its each inclined-plane refraction when being projected to receiving element 3 sensitive surfaces, so working beam 11 is during tactility optical assembly 31, light source and produce power can not be interfered; And working beam 11 has been when having left, and energy discharges smoothly, and therefore, the waveform that is produced on photosensory assembly 31 can obtain the waveform that is similar to E, E1, and so, this scrambler can effectively avoid closely connecing the interference of light sources phenomenon, and obtains signal more accurately.
Referring to shown in Figure 10, on the light-emitting area of the utility model light-emitting component 1, with respect to the photosensory assembly 31 of receiving element 3, form at least one group two inclined-planes or four inclined-planes 12 respectively at its periphery, can under control, project a branch of or the multi beam working beam in order to work light.
Claims (5)
1, a kind of photoelectric sensing element, comprise at least one light-emitting component, at least one receiving element and at least one halo, wherein establish the light-emitting component that a light source that is sent can be radiated at this halo respectively at the contiguous place of each halo, the periphery of each halo is established a receiving element respectively, be respectively equipped with one group of adjacent photosensory assembly that receives via the light signal of each halo working beam in each receiving element, it is characterized in that: on the surface of described receiving element, with respect to the sensitive surface position of its photosensory assembly, form at least one group two inclined-plane respectively at its periphery.
2, photoelectric sensing element according to claim 1, it is characterized in that: described each sensitive surface position is equipped with one in the interposition of the photosensory assembly adjacent with respect to the one group it is divided into two-part groove, makes these sensitive surface positions form at least one group four inclined-plane respectively at its periphery and groove.
3, photoelectric sensing element according to claim 1 and 2 is characterized in that: the material that can be coated with reflective or delustring on the inclined-plane on described receiving element surface.
4, photoelectric sensing element according to claim 1 is characterized in that: on the surface of described light-emitting component, the surperficial position with respect to the photosensory assembly of its receiving element forms at least one group two inclined-plane respectively at its periphery.
5, photoelectric sensing element according to claim 1, it is characterized in that: on the surface of described each light-emitting component, be equipped with one with respect to the interposition at the surperficial position of the photosensory assembly of its receiving element it is divided into two-part groove, make these surperficial positions form at least one group four inclined-plane respectively at its periphery and groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97230106U CN2329043Y (en) | 1997-12-11 | 1997-12-11 | Photoelectric sensing and measuring element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97230106U CN2329043Y (en) | 1997-12-11 | 1997-12-11 | Photoelectric sensing and measuring element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2329043Y true CN2329043Y (en) | 1999-07-14 |
Family
ID=33942704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97230106U Expired - Lifetime CN2329043Y (en) | 1997-12-11 | 1997-12-11 | Photoelectric sensing and measuring element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2329043Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103914158A (en) * | 2013-01-04 | 2014-07-09 | 致伸科技股份有限公司 | Wheel rolling signal generation method |
| CN108571992A (en) * | 2017-03-09 | 2018-09-25 | 曾吉旺 | Optical scanner formula double layer light-guiding encoder |
-
1997
- 1997-12-11 CN CN97230106U patent/CN2329043Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103914158A (en) * | 2013-01-04 | 2014-07-09 | 致伸科技股份有限公司 | Wheel rolling signal generation method |
| CN108571992A (en) * | 2017-03-09 | 2018-09-25 | 曾吉旺 | Optical scanner formula double layer light-guiding encoder |
| CN108571992B (en) * | 2017-03-09 | 2020-04-21 | 曾吉旺 | Optical scanning type double-layer light guide encoder |
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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 | ||
| CX01 | Expiry of patent term |