CN220752318U - Photoelectric sensor and range unit - Google Patents
Photoelectric sensor and range unit Download PDFInfo
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- CN220752318U CN220752318U CN202322320531.6U CN202322320531U CN220752318U CN 220752318 U CN220752318 U CN 220752318U CN 202322320531 U CN202322320531 U CN 202322320531U CN 220752318 U CN220752318 U CN 220752318U
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- 230000003287 optical effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 abstract description 14
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000013459 approach Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000001629 suppression Effects 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a photoelectric sensor and a distance measuring device, wherein the photoelectric sensor comprises a transmitting unit and a receiving unit; the emission unit is used for emitting light rays; the light is reflected by the shielding object and then enters the receiving unit; the receiving unit comprises a receiving surface, wherein the receiving surface comprises a first receiving surface and a second receiving surface which are sequentially arranged along a first direction; the extension length of the second receiving surface is greater than the extension length of the first receiving surface along the first direction; the first direction is the direction in which the first receiving surface points towards the second receiving surface. By adopting the technical means, the working blind area of the photoelectric sensor can be eliminated, the use range of the photoelectric sensor is prolonged, and the detection precision of the photoelectric sensor can be improved by setting the extension length of the second receiving surface to be larger than that of the first receiving surface.
Description
Technical Field
The utility model relates to the technical field of photoelectric switches, in particular to a photoelectric sensor and a distance measuring device.
Background
Photoelectric sensors are widely used in the measurement field as a detection means, and have the advantages of non-contact, high response speed, and being not easily affected by physical characteristics of objects.
In many existing occasions, the common diffuse reflection photoelectric sensor is very difficult to meet the application requirements due to different colors of objects and different light reflectivity, and the sensor which is not affected by the background is very important. The method can set a specific detection distance, detect the object, and detect no object beyond the set distance, so that the detection of the object well avoids the interference of the background. The background suppression type photoelectric sensor has the detection result related to the detection distance only, is irrelevant to the color and the reflectivity of the surface of an object, and can be suitable for detecting a dark target body on the surface of a bright background.
However, the existing background suppression sensor has dead zones which cannot be detected when an object approaches the sensor due to the structure and the light path, and the application of the background suppression sensor in some special fields is limited.
Disclosure of Invention
The embodiment of the utility model provides a photoelectric sensor and a distance measuring device, which are used for eliminating a working blind area of the photoelectric sensor, prolonging the use range of the photoelectric sensor and improving the detection precision of the photoelectric sensor.
In a first aspect, an embodiment of the present utility model provides a photoelectric sensor, including: a transmitting unit and a receiving unit;
the emitting unit is used for emitting light rays; the emergent light is reflected by the shielding object and then enters the receiving unit;
the receiving unit comprises a receiving surface, wherein the receiving surface comprises a first receiving surface and a second receiving surface which are sequentially arranged along a first direction; the second receiving surface has an extension length in the first direction that is greater than an extension length of the first receiving surface; the first direction is a direction in which the first receiving surface points toward the second receiving surface.
Optionally, along the first direction, the first receiving surface has an extension length D1, and the second receiving surface has an extension length D2;
wherein D2 is more than or equal to 2D1.
Optionally, the photoelectric sensor further includes: a control unit;
the control unit is electrically connected with the receiving unit and is used for adjusting the position of the receiving unit according to the distance between the shielding object and the receiving unit so that the light reflected by the shielding object is incident to the receiving unit.
Optionally, the receiving unit includes a photodiode, the photodiode including the first receiving surface and the second receiving surface;
the control unit is electrically connected with the photodiode and is used for controlling the photodiode to move along the first direction according to the distance between the shielding object and the receiving unit so that light reflected by the shielding object is incident to the photodiode.
Optionally, the receiving unit includes a receiving lens and a photodiode, the photodiode including the first receiving surface and a second receiving surface, the receiving lens being located in an optical path between the obstruction and the photodiode;
the control unit is electrically connected with the receiving lens and is used for controlling the receiving lens to move along the first direction and/or the second direction according to the distance between the shielding object and the receiving unit so as to enable the light reflected by the shielding object to be incident to the photodiode; the second direction intersects a plane in which the receiving surface lies.
Optionally, the receiving unit includes a receiving lens and a photodiode, the photodiode including the first receiving surface and a second receiving surface, the receiving lens being located in an optical path between the obstruction and the photodiode;
the control unit is respectively and electrically connected with the receiving lens and the photodiode, and is used for controlling the receiving lens to move along the first direction and/or the second direction according to the distance between the shielding object and the receiving unit and controlling the photodiode to move along the first direction so as to enable the light reflected by the shielding object to be incident to the photodiode; the second direction intersects a plane in which the receiving surface lies.
Optionally, the transmitting unit includes; a light emitting diode and an emission lens;
the light emitting diode is used for emitting light;
the emission lens is positioned on the propagation path of the emergent light and is used for focusing the emergent light and then transmitting the focused emergent light to the shielding object.
Optionally, the photoelectric sensor further includes: a control unit;
the control unit is respectively and electrically connected with the light emitting diode and the emission lens and is used for controlling the light emitting diode and the emission lens to move along the optical axis direction of the emergent light.
Optionally, the photoelectric sensor further includes: a first circuit board and a second circuit board;
the transmitting unit is arranged on the first circuit board, and the receiving unit is arranged on the second circuit board; the first circuit board and the second circuit board are independently arranged.
In a second aspect, an embodiment of the present utility model further provides a ranging device, including the optical point sensor according to any one of the first aspects.
According to the technical scheme provided by the embodiment of the utility model, the emitting unit emits light, the emitted light is incident to the shielding object, and the shielded object is reflected to the receiving unit to form light spots. The receiving unit comprises a receiving surface, wherein the receiving surface comprises a first receiving surface and a second receiving surface which are sequentially arranged along a first direction; along the first direction, the extension length of the second receiving surface is greater than that of the first receiving surface, that is, the receiving surface is an unequal receiving surface, so that on one hand, when the shielding object gradually approaches to the receiving unit, the problem that the light spot is located beyond the receiving surface due to the increase of the angle of the light ray incident to the receiving unit can be avoided, and further, the working blind area can be eliminated, on the other hand, even if the shielding object is very close to the receiving unit, an effective light spot cannot be formed on the receiving surface, and when only a divergent light spot can be formed, the voltage of the second receiving surface is greater than that of the first receiving surface due to the fact that the second receiving surface receives more light, that is, the voltage difference exists between the first receiving surface and the second receiving surface, that is, judgment of an output signal can not be influenced, and further, the detection precision of the photoelectric sensor can be improved.
Drawings
Fig. 1 is a schematic structural diagram of a photoelectric sensor according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a light spot position received by a receiving surface according to an embodiment of the present utility model;
fig. 3 is a schematic view of a spot position received by another receiving surface according to an embodiment of the present utility model;
fig. 4 is a schematic view of a spot position received by a receiving surface according to another embodiment of the present utility model;
FIG. 5 is a schematic view of a spot position received by a receiving surface according to another embodiment of the present utility model;
FIG. 6 is a top view of a receiving surface provided by an embodiment of the present utility model;
fig. 7 is an electrical connection schematic diagram of a control unit according to an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
Fig. 1 is a schematic structural diagram of a photoelectric sensor according to an embodiment of the present utility model, as shown in fig. 1, the photoelectric sensor includes: a transmitting unit 10 and a receiving unit 20; the emitting unit 10 is used for emitting light; the outgoing light is reflected by the shielding object 30 and then enters the receiving unit 20; the receiving unit 20 includes a receiving surface 201, and the receiving surface 201 includes a first receiving surface 2011 and a second receiving surface 2012 arranged in order along a first direction (X direction as shown in the drawing); along the first direction X, the extension length of the second receiving surface 2012 is greater than the extension length of the first receiving surface 2011; the first direction X is a direction in which the first receiving surface 2011 points toward the second receiving surface 2012.
Specifically, the emitting unit 10 is configured to emit light, and further, the emitting unit 10 includes a light emitting diode 101 and an emitting lens 102; the light emitting diode 101 is used for emitting light; the emission lens 102 is located on the propagation path of the outgoing light, and is used for focusing the outgoing light and transmitting the outgoing light to the shielding object 30. Specifically, the light emitted from the light emitting diode 101 is incident to the emission lens 102, the emission lens 102 focuses the light and transmits the light to the shielding object 30, the shielding object 30 can reflect the light to the receiving unit 20, and then the receiving surface 201 can receive the light, so as to realize detection of the shielding object 30.
In the prior art, along the first direction X, the extension length of the first receiving surface 2011 is equal to the extension length of the second receiving surface 2012, when the shielding object 30 gradually approaches the receiving unit 20, the light incident to the receiving unit 20 after being reflected by the shielding object 30 can increase the angle of the light incident to the receiving unit 20 to make the light spot located at a position beyond the receiving surface 201, that is, the light spot cannot fall on the receiving surface 201, that is, the photoelectric sensor cannot detect the shielding object 30, and thus the detection accuracy of the photoelectric sensor is affected.
Specifically, the receiving surface 201 provided in the embodiment of the present utility model has an extension length of the second receiving surface 2012 along the first direction X that is greater than an extension length of the first receiving surface 2011, that is, an unequal receiving surface 201 is adopted. For example, when the shutter 30 is at the position a, the light reflected by the transmitting unit 10 through the shutter 30 is incident on the receiving unit 20, so that a light spot may be formed at the a position of the receiving surface, when the shutter 30 is at the position B, the light reflected by the transmitting unit 10 through the shutter 30 is incident on the receiving unit 20, so that a light spot may be formed at the B position of the receiving surface, and if the receiving surface is equal in the prior art, a light spot may not be formed at the B position, and the light spot may fall at a position other than the receiving surface. According to the embodiment of the utility model, by increasing the length of the second receiving surface 2012 along the first direction X, when the shielding object 30 approaches the receiving unit 20, the light spot can be ensured to be still beaten on the second receiving surface 2012, and then the working blind area can be eliminated.
Further, fig. 2 is a schematic diagram of a position of a light spot received by a receiving surface according to an embodiment of the present utility model, as shown in fig. 2, the light spot is located at a center position of the receiving surface 201, and the light spot is smaller, so that it can be known that the distance between the shielding object 30 and the receiving unit 20 is longer. Fig. 3 is a schematic view of the position of a light spot received by another receiving surface according to the embodiment of the present utility model, as shown in fig. 3, the light spot is located at the center of the receiving surface 201, and the light spot is larger, so that, compared with fig. 2, the distance between the shielding object 30 and the receiving unit 20 is shorter. Fig. 4 is a schematic view of the positions of light spots received by a receiving surface according to another embodiment of the present utility model, as shown in fig. 4, the light spots are located at the edge positions of the receiving surface 201, and the light spots in the light spots are scattered, so that it can be seen that, compared with fig. 3, the distance between the shielding object 30 and the receiving unit 20 is relatively short. Fig. 5 is a schematic view of the positions of light spots received by a receiving surface according to another embodiment of the present utility model, as shown in fig. 5, the light spots in the light spots are more dispersed, and it can be seen that, compared to fig. 4, the distance between the shield 30 and the receiving unit 20 is closer, so that no effective light spot is formed on the receiving surface 201, and only a divergent light spot can be formed. Fig. 6 is a top view of a receiving surface according to an embodiment of the present utility model, and with continued reference to fig. 2-6, when a light spot on the receiving surface 201 slides from point c1 to point c2, the voltage of the first receiving surface 2011 increases linearly, and when a light spot slides from point c4 to point c3, the voltage of the second receiving surface 2012 increases linearly. When the spot is in the middle of the line adjacent to the first receiving surface 2011 and the second receiving surface 2012, the voltages of the first receiving surface 2011 and the second receiving surface 2012 are the same. When the portion of the spot at the second receiving surface 2012 is larger than the portion at the first receiving surface 2011, the voltage at the second receiving surface 2012 is larger than the voltage at the first receiving surface 2011.
Further, along the first direction X, the extension length of the second receiving surface 2012 is greater than the extension length of the first receiving surface 2011, so that even if the shielding object 30 is very close to the receiving unit 20, an effective light spot cannot be formed on the receiving surface 201, and only a divergent light spot can be formed, since the second receiving surface 2012 receives more light, the voltage of the second receiving surface 2012 is greater than the voltage of the first receiving surface 2011, that is, a voltage difference exists between the first receiving surface 2011 and the second receiving surface 2012, that is, the judgment of the output signal of the photoelectric sensor is not affected, and the detection accuracy of the photoelectric sensor can be further improved.
According to the photoelectric sensor provided by the embodiment of the utility model, the extension length of the second receiving surface is larger than that of the first receiving surface along the first direction, namely, the receiving surface is an unequal receiving surface, so that on one hand, when a shielding object gradually approaches to the receiving unit, the problem that light spots are located beyond the receiving surface due to the increase of angles of light rays entering the receiving unit is avoided, further, a working blind area can be eliminated, on the other hand, even if the shielding object is very close to the receiving unit, an effective light spot cannot be formed on the receiving surface, and only a divergent light spot can be formed, because the second receiving surface receives more light, the voltage of the second receiving surface is larger than that of the first receiving surface, namely, the voltage difference exists between the first receiving surface and the second receiving surface, namely, judgment of an output signal is not influenced, and further, the detection precision of the photoelectric sensor can be improved.
Optionally, with continued reference to fig. 1, along the first direction X, the first receiving surface 2011 extends over a length D1 and the second receiving surface 2012 extends over a length D2; wherein D2 is more than or equal to 2D1.
Specifically, along the first direction X, the extension length of the second receiving surface 2012 is at least twice that of the first receiving surface 2011, so that it can be further ensured that the light incident to the receiving unit 20 after being reflected by the shielding object 30 can be received by the receiving surface 201, and further, the working blind area of the photoelectric sensor can be eliminated, and the reliability of the photoelectric sensor is improved.
Illustratively, D1 and D2 may satisfy d2=2d1 or d2=3d1, and the ratio of both D1 and D2 is not specifically limited in the embodiment of the present utility model.
Optionally, fig. 7 is an electrical connection schematic diagram of a control unit according to an embodiment of the present utility model, as shown in fig. 7, where the photoelectric sensor further includes: a control unit 40; the control unit 40 is electrically connected to the receiving unit 20, and is configured to adjust the position of the receiving unit 20 according to the distance between the shielding object 30 and the receiving unit 20, so that the light reflected by the shielding object 30 is incident on the receiving unit 20.
Specifically, the control unit 40 is electrically connected to the receiving unit 20, so that the position of the receiving unit 20 can be adjusted by the control unit 40, and further, the light reflected by the shielding object 30 can be further ensured to be incident to the receiving unit 20, and the working blind area is avoided.
Further, as one possible embodiment, with continued reference to fig. 1 and 7, the receiving unit 20 includes a photodiode 21, the photodiode 21 including a first receiving surface 2011 and a second receiving surface 2012; the control unit 40 is electrically connected to the photodiode 21, and is configured to control the photodiode 21 to move along the first direction X according to the distance between the shielding object 30 and the receiving unit 20, so that the light reflected by the shielding object 30 is incident on the photodiode 21.
Specifically, when the distance between the shielding object 30 and the receiving unit 20 gradually gets closer, the light spot incident on the receiving surface 201 of the photodiode 21 moves along the first direction X, so the control unit 40 can control the photodiode 21 to move along the first direction X according to the distance between the shielding object 30 and the receiving unit 20, so that the light reflected by the shielding object 30 is ensured to be incident on the receiving surface 201 of the photodiode 21, further the working blind area of the photoelectric sensor can be eliminated, and the range of use of the photoelectric sensor can be prolonged.
As another possible embodiment, with continued reference to fig. 1 and 7, the receiving unit 20 comprises a receiving lens 202 and a photodiode 21, the photodiode 21 comprising a first receiving surface 2011 and a second receiving surface 2012, the receiving lens 202 being located in the optical path between the obstruction 30 and the photodiode 21; the control unit 40 is electrically connected to the receiving lens 202, and is configured to control the receiving lens 202 to move along the first direction X and/or the second direction (Y direction as shown in the figure) according to the distance between the shielding object 30 and the receiving unit 20, so that the light reflected by the shielding object 30 is incident on the photodiode 21; the second direction Y intersects the plane of the receiving surface 201.
Specifically, the control unit 40 is electrically connected to the receiving lens 202, and can control the receiving lens 202 to move along the first direction X, the second direction Y, or the first direction and the second direction Y, so that the position of the receiving lens 202 can be controlled according to the distance between the shielding object 30 and the receiving unit 20, so as to ensure that the light reflected by the shielding object 30 is incident to the photodiode 21, further eliminate the working blind area of the photoelectric sensor, and improve the detection precision of the photoelectric sensor.
As another possible embodiment, with continued reference to fig. 1 and 7, the receiving unit 20 comprises a receiving lens 202 and a photodiode 21, the photodiode 202 comprising a first receiving surface 2011 and a second receiving surface 2012, the receiving lens 202 being located in the optical path between the obstruction 30 and the photodiode 21; the control unit 40 is electrically connected to the receiving lens 202 and the photodiode 21, and is configured to control the receiving lens 202 to move along the first direction X and/or the second direction Y according to the distance between the shielding object 30 and the receiving unit 20, and control the photodiode 21 to move along the first direction X, so that the light reflected by the shielding object 30 is incident on the photodiode 21; the second direction Y intersects the plane of the receiving surface 201.
Specifically, the control unit 40 is electrically connected to the receiving lens 202 and the photodiode 21, so that the receiving lens 202 and the photodiode 21 can be controlled to move according to the distance between the shielding object 30 and the receiving unit 20, the control precision is improved, the light reflected by the shielding object 30 is facilitated to be incident to the photodiode 21, the light receiving rate of the photodiode 21 is improved, the working blind area is further eliminated, and the detection precision of the photoelectric sensor is improved.
The control unit 40 shown in fig. 7 is electrically connected to the receiving lens 202 and the photodiode 21, respectively, and performs joint control of the receiving lens 202 and the photodiode 21. It is understood that the control unit 40 may also be electrically connected only to the receiving lens 202 or only to the photodiode 21, to achieve a position adjustment of the receiving lens 202 or a position adjustment of the photodiode 21, respectively.
Optionally, with continued reference to fig. 1, the shielding object 30 includes different background colors, that is, the photoelectric sensor may be a background suppression photoelectric sensor, and the position of the shielding object 30 from the photoelectric sensor is determined by the spot positions of the light reflected by the shielding object 30 with different distances, and when the set position is reached, a switch signal may be output, so as to achieve the effect of suppressing the different background colors of the shielding object.
Optionally, with continued reference to fig. 7, the photosensor further includes: a control unit 40; the control unit 40 is electrically connected to the light emitting diode 101 and the emission lens 102, respectively, and is used for controlling the light emitting diode 101 and the emission lens 102 to move along the optical axis direction of the emergent light.
Specifically, as a comparative example, most of the emitting units 10 of the photoelectric sensor in the prior art are fixed and immovable, and the photoelectric sensor provided in the embodiment of the present utility model is electrically connected with the light emitting diode 101 and the emitting lens 102 through the control unit 40, so that the adjustment of the distance between the emitting lens 102 and the light emitting diode 101 by the control unit 40 can be realized, and thus the focal point position and the size of the emergent light spot of the emitting unit 10 can be controlled, and the flexibility of the photoelectric sensor can be improved, so as to adapt to various specific occasions.
Note that, the control unit 40 shown in fig. 7 is electrically connected to the light emitting diode 101 and the emission lens 102, respectively, so as to implement joint control of the light emitting diode 101 and the emission lens 102. It is understood that the control unit 40 may also be electrically connected to only the light emitting diode 101 or to only the emission lens 102, to achieve a position adjustment of the light emitting diode 101 or a position adjustment of the emission lens 102, respectively.
Optionally, with continued reference to fig. 1, the photosensor further includes: a first circuit board (not shown) and a second circuit board (not shown); the transmitting unit 10 is arranged on the first circuit board, and the receiving unit 20 is arranged on the second circuit board; the first circuit board and the second circuit board are independently arranged.
Specifically, the transmitting unit 10 is disposed on the first circuit board, the receiving unit 20 is disposed on the second circuit board, that is, the transmitting unit 10 and the receiving unit 20 are not disposed on the same circuit board, so that independent control of the transmitting unit 10 or the receiving unit 20 can be realized through the control unit 40, and flexibility of the photoelectric sensor can be improved. For example, when the control unit 40 only controls the receiving unit 20 to move, the control unit 40 independently controls the receiving unit 20, so that it is avoided that the emitting unit 10 and the receiving unit 20 are disposed in the same circuit board, and when the control unit 40 adjusts the position of the receiving unit 20, the position of the emitting unit 10 is also adjusted, so as to affect the light emitted by the emitting unit 10.
In summary, in the photoelectric sensor provided by the embodiment of the utility model, along the first direction, the extension length of the second receiving surface is greater than that of the first receiving surface, that is, the receiving surface is an unequal receiving surface, so that on one hand, when the shielding object gradually approaches to the receiving unit, the problem that the light spot is located beyond the receiving surface due to the increase of the angle of the light incident to the receiving unit is avoided, and further, the working blind area can be eliminated, and on the other hand, even if the shielding object is very close to the receiving unit, an effective light spot cannot be formed on the receiving surface, and only a divergent light spot can be formed, because the second receiving surface receives more light, the voltage of the second receiving surface is greater than that of the first receiving surface, that is, the voltage difference exists between the first receiving surface and the second receiving surface, that is, the judgment of the output signal is not influenced, and further, the detection precision of the photoelectric sensor can be improved. In addition, the embodiment of the utility model can be electrically connected with the receiving lens and/or the photodiode through the control unit, so that the position of the receiving lens and/or the photodiode is adjusted according to the distance between the shielding object and the receiving unit, thereby realizing more accurate distance setting, ensuring that the light reflected by the shielding object is incident on the receiving surface, improving the receiving rate of the light on the receiving surface, further eliminating the working blind area of the photoelectric sensor, and improving the flexibility and reliability of the photoelectric sensor.
Based on the same inventive concept, the embodiment of the present utility model further provides a ranging device, which includes the photoelectric sensor in the foregoing embodiment, so that the ranging device provided in the embodiment of the present utility model also has the beneficial effects described in the foregoing embodiment, which is not repeated herein.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. A photoelectric sensor, comprising: a transmitting unit and a receiving unit;
the emitting unit is used for emitting light rays; the emergent light is reflected by the shielding object and then enters the receiving unit;
the receiving unit comprises a receiving surface, wherein the receiving surface comprises a first receiving surface and a second receiving surface which are sequentially arranged along a first direction; the second receiving surface has an extension length in the first direction that is greater than an extension length of the first receiving surface; the first direction is a direction in which the first receiving surface points toward the second receiving surface.
2. The photosensor according to claim 1, wherein an extension length of the first receiving surface is D1 and an extension length of the second receiving surface is D2 in the first direction;
wherein D2 is more than or equal to 2D1.
3. The photosensor according to claim 1, further comprising: a control unit;
the control unit is electrically connected with the receiving unit and is used for adjusting the position of the receiving unit according to the distance between the shielding object and the receiving unit so that the light reflected by the shielding object is incident to the receiving unit.
4. A photosensor according to claim 3, wherein the receiving unit comprises a photodiode comprising the first receiving surface and the second receiving surface;
the control unit is electrically connected with the photodiode and is used for controlling the photodiode to move along the first direction according to the distance between the shielding object and the receiving unit so that light reflected by the shielding object is incident to the photodiode.
5. A photosensor according to claim 3, wherein the receiving unit comprises a receiving lens and a photodiode, the photodiode comprising the first and second receiving surfaces, the receiving lens being located in the optical path between the obstruction and the photodiode;
the control unit is electrically connected with the receiving lens and is used for controlling the receiving lens to move along the first direction and/or the second direction according to the distance between the shielding object and the receiving unit so as to enable the light reflected by the shielding object to be incident to the photodiode; the second direction intersects a plane in which the receiving surface lies.
6. A photosensor according to claim 3, wherein the receiving unit comprises a receiving lens and a photodiode, the photodiode comprising the first and second receiving surfaces, the receiving lens being located in the optical path between the obstruction and the photodiode;
the control unit is respectively and electrically connected with the receiving lens and the photodiode, and is used for controlling the receiving lens to move along the first direction and/or the second direction according to the distance between the shielding object and the receiving unit and controlling the photodiode to move along the first direction so as to enable the light reflected by the shielding object to be incident to the photodiode; the second direction intersects a plane in which the receiving surface lies.
7. The photosensor according to claim 1, wherein the emission unit includes; a light emitting diode and an emission lens;
the light emitting diode is used for emitting light;
the emission lens is positioned on the propagation path of the emergent light and is used for focusing the emergent light and then transmitting the focused emergent light to the shielding object.
8. The photosensor according to claim 7, further comprising: a control unit;
the control unit is respectively and electrically connected with the light emitting diode and the emission lens and is used for controlling the light emitting diode and the emission lens to move along the optical axis direction of the emergent light.
9. The photosensor according to claim 1, further comprising: a first circuit board and a second circuit board;
the transmitting unit is arranged on the first circuit board, and the receiving unit is arranged on the second circuit board; the first circuit board and the second circuit board are independently arranged.
10. A distance measuring device comprising a photosensor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322320531.6U CN220752318U (en) | 2023-08-25 | 2023-08-25 | Photoelectric sensor and range unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322320531.6U CN220752318U (en) | 2023-08-25 | 2023-08-25 | Photoelectric sensor and range unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220752318U true CN220752318U (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322320531.6U Active CN220752318U (en) | 2023-08-25 | 2023-08-25 | Photoelectric sensor and range unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220752318U (en) |
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2023
- 2023-08-25 CN CN202322320531.6U patent/CN220752318U/en active Active
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