CN218866213U - Probe apparatus - Google Patents
Probe apparatus Download PDFInfo
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- CN218866213U CN218866213U CN202222681492.8U CN202222681492U CN218866213U CN 218866213 U CN218866213 U CN 218866213U CN 202222681492 U CN202222681492 U CN 202222681492U CN 218866213 U CN218866213 U CN 218866213U
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- reflecting surface
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Abstract
The application relates to the technical field of detection, aims to solve the problems of complex structure and high cost of a scanning detection device which needs to be provided with a rotating or deflecting component and a corresponding control system, and provides a detection device which comprises a light emitting element, a first optical element and a light receiving element. The light emitting element is used for emitting a first light beam; the first optical element is arranged on the optical path of the first light beam and can reflect the first light beam to form a second light beam which is emitted in different circumferential directions simultaneously; the second light beam can be reflected by an object on the optical path to form a third light beam; the light receiving element is used for receiving the third light beam. The beneficial effects of this application are that detection range is great, and simple structure, cost are lower.
Description
Technical Field
The application relates to the technical field of detection, in particular to a detection device.
Background
In known scanning type detection devices, it is necessary to configure a scanning mirror or MEMS galvanometer capable of rotation, which increases the complexity of the structure and control and increases the device cost.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a detection device to solve the problems that a scanning detection device needs to be provided with a rotating or deflecting component and a corresponding control system, and is complex in structure and high in cost.
The application provides a detection device, it includes:
a seat member having an axially extending interior space and a circumferential light passage;
a light emitting element provided in the internal space and capable of emitting a first light beam in an axial direction of the internal space;
a light receiving element provided in the internal space and opposed to the light emitting element at an interval in an axial direction of the internal space;
a first optical element provided between the light emitting element and the light receiving element; the first optical element is a reflector with a conical first reflecting surface, the first reflecting surface faces the light emitting element, the central axis of the first reflecting surface is parallel to or coincident with the central axis of the first light beam, and the first reflecting surface can reflect the first light beam in the circumferential direction to form second light beams distributed in the circumferential direction; the second light beam can pass through the light channel and be reflected by an external object to form a third light beam;
a second optical element provided between the first optical element and the light receiving element; the second optical element is a mirror having a conical second reflecting surface facing the light receiving element and capable of converging the third light beam to the light receiving element.
When the detection device in the application is used, the first optical element guides the first light beam to form the second light beam distributed along the circumferential direction, and the third light beam of the second light beam reflected by the object on the optical path is received by the light receiving element after being reflected by the second optical element and is used for analyzing the information (such as distance, outer contour and the like) of the object. And the detection device can obtain a large-range detection capability due to the circumferential guiding function of the first optical element and the converging function of the second optical element. In addition, the detection device does not need to be provided with a rotating scanning mirror or a deflecting MEMS galvanometer, and has simple structure and low cost.
The present application further provides a detection device, comprising:
a light emitting element for emitting a first light beam;
the first optical element is arranged on the optical path of the first light beam and can reflect the first light beam to form second light beams emitted in different circumferential directions simultaneously; the second light beam can be reflected by an object on the optical path to form a third light beam; and
a light receiving element for receiving the third light beam.
When the detection device in this application is used, the first optical element guides the first light beam to form the second light beam distributed along the circumferential direction, and the third light beam after the second light beam is reflected by the object on the optical path is received by the light receiving element and is used for analyzing the information (such as distance, outer contour, etc.) of the object. And, the detection device can obtain a wide range of detection capability due to the circumferential guiding function of the first optical element.
In one possible embodiment:
the first optical element is arranged stationary relative to the light emitting element.
In one possible embodiment:
the first optical element is provided with a conical reflecting surface, the reflecting surface corresponds to the light emitting element and is used for reflecting the first light beam to form the second light beam distributed along the circumferential direction.
In one possible embodiment:
the reflecting surface is a conical surface or a multi-pyramid surface.
In one possible embodiment:
the axis of the reflecting surface is coincident with or parallel to the axis of the first light beam.
In one possible embodiment:
the reflection surface has an annular reflection area adapted to the annular first light beam emitted by the light emitting element.
In one possible embodiment:
the detection device further comprises a wide-angle lens group, and the wide-angle lens group is arranged on the path of the third light beam and used for converging the third light beam and transmitting the third light beam to the light receiving element.
In one possible embodiment:
the wide-angle lens group is a convex lens or a reflector with a conical reflecting surface.
In one possible embodiment:
the light emitting element comprises a laser and a beam expanding assembly, and laser emitted by the laser forms the first light beam after being expanded by the beam expanding assembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a detection apparatus according to a first embodiment of the present application;
FIG. 2 is a schematic diagram of a first optical element shown in FIG. 1;
FIG. 3 is a schematic view of a vehicle having the detection apparatus of FIG. 1;
FIG. 4 is a schematic illustration of an aircraft having the sonde of FIG. 1;
fig. 5 is a schematic structural diagram of a detection device in the second embodiment of the present application.
Description of the main element symbols:
probe apparatus 100,100a
First optical element 13,13a
Second optical element 14
The top wall 17
First reflecting surface 24
Second reflecting surface 25
Reflecting surface 26a
Wide-angle lens group 27a
Light beam expanding unit 30a
Automobile 210
Aircraft 220
Regions S1, S2, S3, S4
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Some embodiments of the present application are described in detail. In the following embodiments, features of the embodiments may be combined with each other without conflict.
Example one
Referring to fig. 1, the present embodiment provides a detection apparatus 100, which includes a base member 10, a light emitting element 11, a light receiving element 12, a first optical element 13, and a second optical element 14.
Wherein the seat member 10 has an axially extending inner space 15 and a circumferential light passage 16. The internal space 15 is used to house and mount other members (such as the light emitting element 11, the light receiving element 12, the first optical element 13, and the second optical element 14). The light passage 16 is for allowing the light beam to pass through. In one embodiment, the seat member 10 is a generally hollow shell-like structure including a top wall 17, a bottom wall 18, and a surrounding wall 19 connected between the top wall 17 and the bottom wall 18. The walls 19 may be wholly or only partially light transmissive to define the light passage 16 which allows light to pass therethrough. To achieve light transmission, the walls 19 may be partially or entirely hollow or made of a light-transmitting material (e.g., glass). The shape of the base member 10 may be configured as desired, and may be, for example, cylindrical as shown, or may be rectangular, spherical, ellipsoidal, or other shapes.
The light emitting element 11 is provided in the internal space 15 and is capable of emitting a first light beam 21 in the axial direction of the internal space 15. As shown in fig. 1, the light emitting element 11 may be fixedly disposed on the side of the top wall 17 facing the bottom wall 18 and may be capable of emitting the first light beam 21 toward the side of the bottom wall 18. The first light beam 21 emitted by the light Emitting element 11 may be Laser light, and the corresponding light Emitting element 11 may include a Laser 20, such as a Vertical-Cavity Surface-Emitting Laser (VCSEL). In this embodiment, the light emitting element 11 may further include an optical element for expanding light.
The light receiving element 12 is provided in the internal space 15 and is opposed to the light emitting element 11 at a spacing in the axial direction of the internal space 15. As shown in fig. 1, for example, the light receiving element 12 is provided on a side surface of the bottom wall 18 facing the top wall 17.
The first optical element 13 is provided between the light emitting element 11 and the light receiving element 12, and is also provided in the internal space 15. The first optical element 13 may be supported in the seat member 10 by a bracket, and the specific structure of the bracket may be set according to requirements, for example, the bracket structure may be supported and connected to the bottom wall 18 or the top wall 17. In this embodiment, the first optical element 13 is a reflector having a conical first reflecting surface 24, the first reflecting surface 24 faces the light emitting element 11, and a central axis of the first reflecting surface 24 is parallel to a central axis of the first light beam 21 or coincides with the central axis of the first light beam 21, so that the first reflecting surface 24 can reflect the first light beam 21 in a circumferential direction to form the second light beams 22 distributed in the circumferential direction. Alternatively, referring to fig. 2, the first optical element 13 may be generally conical with its tip facing the light emitting element 11, and its conical surface as the first reflecting surface 24. In this way, the first light flux 21 is incident on the first optical element 13, and then is reflected outward by the circumferentially different positions of the conical first reflecting surface 24 toward the circumferentially different positions, thereby forming the second light flux 22 capable of covering the circumferential range. Of course, the second light beam 22 may cover the entire circumferential extent or only a portion of the circumferential extent as desired. For example, for some angles that do not need to be detected, the circumferential extent or circumferential angle that the second light beam 22 needs to cover can be adjusted by the light-exiting spot distribution control of the first optical element 13 and/or the circumferential extension control of the first reflective surface 24.
In other embodiments, the first optical element 13 may also be a polygonal pyramid (such as a triangular pyramid, a rectangular pyramid, etc.), a truncated cone, a hemisphere, or other planar or curved structure.
The second light beam 22 may pass outwardly through the light passage 16 of the socket member 10. When the second light beam 22 emitted in a certain direction is irradiated to an external object, it will be reflected by the object to form a third light beam 23. The third light beam 23 may be received by the second optical element 14 for analyzing to obtain information (e.g., position information, etc.) of the object.
The second optical element 14 is provided between the first optical element 13 and the light receiving element 12. The second optical element 14 may be provided integrally with the first optical element 13 or may be provided separately. When the second optical element 14 is provided separately, the second optical element may be attached to the socket 10 by the same bracket as the first optical element 13, or may be attached to the socket 10 separately. The first optical element 13 and the second optical element 14 may not be in contact with each other spatially, may also be in contact with each other and/or may be connected to each other, and are not limited herein. In this embodiment, the second optical element 14 is a mirror having a conical second reflecting surface 25, and the second reflecting surface 25 faces the light receiving element 12 and can converge the third light beam 23 to the light receiving element 12.
For example, in some embodiments, the second optical element 14 takes a conical shape and may be provided in the same shape as the first optical element 13. In one embodiment, the first optical element 13 and the second optical element 14 are conical structures with the same taper angle, and are fixedly connected together in a manner that the bottom surfaces of the two optical elements are overlapped and contacted and the tips of the two optical elements face opposite directions, so that the relative positions of the two optical elements are stable. In this way, the third light beams 23 reflected by the objects at the circumferential angles are reflected and condensed to the light receiving element 12 by the second reflecting surface 25 having a conical shape.
When the detection device 100 in this embodiment is used, the light emitting element 11 emits a first light beam 21, and the first light beam 21 is emitted by the first optical element 13 to form a second light beam 22 capable of covering a certain circumferential range; the second light beam 22 is irradiated to the object and then reflected by the object to form a third light beam 23, which is condensed by the second optical element 14 to the light receiving element 12, for analyzing information (such as position information) of the object.
The detecting device 100 in this embodiment may specifically be used as a dTOF (direct Time of Flight) module for obtaining distance information, contour information, and the like of an object.
The detection device 100 in this embodiment may be used in a vehicle, such as an automobile 210 or an airplane 220, and may be used as a module for the automobile 210 or the airplane 220 to sense and determine an external object.
For example, as shown in fig. 3, the detection apparatus 100 is used in a car 210, and is installed at the roof of the car 210, and the coverage area of the second light beam 22 may include two side areas S1 and S2 of the car 210. As another example, as shown in fig. 4, the detection apparatus 100 is used in an aircraft 220, and is installed outside the aircraft 220, and the coverage area of the second light beam 22 may include two side areas S3 and S4 of the aircraft 220.
When installed in a vehicle such as a car 210 or an airplane 220, the probe apparatus 100 can be fixed to the vehicle by the seat member 10.
The detection device 100 in this embodiment can obtain detection in a circumferential range without rotating scanning, and has a simple structure and low implementation cost, and the detection in the circumferential range is implemented without a circumferential rotation scanning structure (such as a scanning mirror) as in some known technologies, thereby avoiding the problems of high cost and high control difficulty caused by a Micro-Electro-Mechanical System (MEMS) with a complex structure.
In addition, the structure can also realize the control of the detection range through the control of the light-emitting spot shape of the light-emitting element 11 or the control of the reflection area of the first reflection surface 24/the second reflection surface 25, and the setting is convenient. For example, for a region not to be detected, the light spot of the first light beam 21 corresponding to the region may not emit light in the region, or the reflection function of the region corresponding to the first reflection surface 24/the second reflection surface 25 may be lost.
Example two
Referring to fig. 5, the present embodiment provides a detection apparatus 100a including a light emitting element 11a, a first optical element 13a, and a light receiving element 12a.
The light emitting element 11a is for emitting a first light beam 21a. The light emitting element 11a may include a laser 20a and a light beam expanding unit 30a. The laser 20a is configured to provide a laser beam, and the light beam expanding unit 30a is configured to expand the laser beam so that the laser beam has a certain spot size to cover a certain range of space. In this embodiment, the Laser 20a may be a Vertical-Cavity Surface-Emitting Laser (VCSEL) 20 a. The light beam expanding unit 30a may employ a known beam expanding lens or a lens group, and is not limited herein.
The first optical element 13a is disposed on an optical path of the first light beam 21a, and is capable of reflecting the first light beam 21a to form a second light beam 22a which is emitted in different directions in a circumferential direction at the same time. Optionally, the first optical element 13a has a conical reflecting surface 26a, and the reflecting surface 26a corresponds to the light emitting element 11a, and is used for reflecting the first light beam 21a to form the second light beam 22a distributed along the circumferential direction. Optionally, the reflecting surface 26a is a conical surface or a polygonal pyramid surface. Optionally, the axis of the reflecting surface 26a coincides with or is parallel to the axis of the first light beam 21a. Optionally, the reflection surface 26a has an annular reflection area, which is adapted to the annular first light beam 21a emitted by the light emitting element 11 a. The first optical element 13a in the present embodiment may have the same structural shape as in the first embodiment, such as a conical shape.
In this embodiment, the first optical element 13a is arranged stationary with respect to the light emitting element 11a, and does not need to be driven by a driving member (e.g., a rotary motor) as in the scanning galvanometer used in some known techniques that require rotation.
The second light beam 22a can be reflected by an object on the optical path to form a third light beam 23a. When the second light beam 22a emitted in a certain direction irradiates an external object 500 (such as pedestrians and non-motor vehicles on both sides as shown in fig. 5), it will be reflected by the object 500 to form a third light beam 23a.
The light receiving element 12a is used for receiving the third light beam 23a. The light receiving element 12a may be an optical sensor capable of receiving the third light beam 23a and converting it into an electrical signal for analyzing position information/distance information of the object, etc.
In this embodiment, optionally, the detecting device 100a further includes a wide-angle lens group 27a, where the wide-angle lens group 27a is disposed on a path of the third light beam 23a, and is located before the light receiving element 12a, and is used for converging and transmitting the third light beam 23a to the light receiving element 12a. Alternatively, the wide-angle lens group 27a may employ a convex lens or a conical second optical element 14a as in the first embodiment.
When the detection apparatus 100a in this embodiment is used, the first optical element 13a guides the first light beam 21a to form the second light beam 22a distributed along the circumferential direction, and the third light beam 23a, which is obtained by reflecting the second light beam 22a by the object 500 on the optical path, is received by the light receiving element 12a for analyzing information (such as distance, outer contour, etc.) of the object 500. Moreover, the detection device 100a can obtain a wide detection capability due to the circumferential guiding function of the first optical element 13 a. In addition, a scanning beam or an MEMS galvanometer which needs to be scanned in a revolving mode does not need to be configured in the structure, the structure is simple, and the cost is low. With the arrangement of the wide angle lens group 27a, more third light beams 23a enter the light receiving element 12a through the wide angle lens group 27a, and a larger detection range can be obtained.
By combining the description of the above embodiments, the detection device provided by the application has a large detection range, a simple structure, a low cost and a large industrial applicability.
Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.
Claims (10)
1. A probe apparatus, comprising:
a seat member having an axially extending interior space and a circumferential light passage;
a light emitting element provided in the internal space and capable of emitting a first light beam in an axial direction of the internal space;
a light receiving element provided in the internal space and opposed to the light emitting element at an interval in an axial direction of the internal space;
a first optical element provided between the light emitting element and the light receiving element; the first optical element is a reflector with a conical first reflecting surface, the first reflecting surface faces the light emitting element, the central axis of the first reflecting surface is parallel to or coincident with the central axis of the first light beam, and the first reflecting surface can reflect the first light beam in the circumferential direction to form second light beams distributed in the circumferential direction; the second light beam can pass through the light channel and be reflected by an external object to form a third light beam;
a second optical element provided between the first optical element and the light receiving element; the second optical element is a mirror having a conical second reflecting surface facing the light receiving element and capable of converging the third light beam to the light receiving element.
2. A probe apparatus, comprising:
a light emitting element for emitting a first light beam;
the first optical element is arranged on the light path of the first light beam and can reflect the first light beam to form second light beams which are emitted in different circumferential directions simultaneously; the second light beam can be reflected by an object on the light path to form a third light beam; and
a light receiving element for receiving the third light beam.
3. The probe apparatus of claim 2, wherein:
the first optical element is arranged stationary relative to the light emitting element.
4. The probe apparatus of claim 2, wherein:
the first optical element is provided with a conical reflecting surface, the reflecting surface corresponds to the light emitting element and is used for reflecting the first light beam to form the second light beam distributed along the circumferential direction.
5. The probe apparatus of claim 4, wherein:
the reflecting surface is a conical surface or a multi-pyramid surface.
6. The probe apparatus of claim 4, wherein:
the axis of the reflecting surface is coincident with or parallel to the axis of the first light beam.
7. The probe apparatus of claim 4, wherein:
the reflection surface has an annular reflection area adapted to the annular first light beam emitted by the light emitting element.
8. The probe apparatus of claim 2, wherein:
the detection device further comprises a wide-angle lens group, and the wide-angle lens group is arranged on the path of the third light beam and used for converging the third light beam and transmitting the third light beam to the light receiving element.
9. The probe apparatus of claim 8, wherein:
the wide-angle lens group is a convex lens or a reflector with a conical reflecting surface.
10. The probe apparatus of claim 2, wherein:
the light emitting element comprises a laser and a beam expanding assembly, and laser emitted by the laser forms the first light beam after being expanded by the beam expanding assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222681492.8U CN218866213U (en) | 2022-10-11 | 2022-10-11 | Probe apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222681492.8U CN218866213U (en) | 2022-10-11 | 2022-10-11 | Probe apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218866213U true CN218866213U (en) | 2023-04-14 |
Family
ID=87373105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222681492.8U Active CN218866213U (en) | 2022-10-11 | 2022-10-11 | Probe apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218866213U (en) |
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2022
- 2022-10-11 CN CN202222681492.8U patent/CN218866213U/en active Active
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