CN218868239U

CN218868239U - Light emitter based on point light source array and optical communication system

Info

Publication number: CN218868239U
Application number: CN202320136049.4U
Authority: CN
Inventors: 方俊; 李江亮; 苏爱民
Original assignee: Shaanxi Whyhow Information Technology Co ltd
Current assignee: Shaanxi Whyhow Information Technology Co ltd
Priority date: 2023-01-19
Filing date: 2023-01-19
Publication date: 2023-04-14
Anticipated expiration: 2033-01-19

Abstract

The embodiment of the specification provides a light emitter based on a point light source array and an optical communication system, wherein the light emitter comprises: a panel and a plurality of point light sources; the panel is provided with a light guide hole array; the light guide hole array includes: a plurality of light guide holes; each light guide hole is provided with one point light source. The technical scheme provided by the application is used for solving the problems that an optical communication system in the prior art is complex in structure, high in cost and easy to damage.

Description

Light emitter based on point light source array and optical communication system

Technical Field

The present invention relates to the field of optical communications, and in particular, to an optical transmitter and an optical communication system based on a point light source array.

Background

In real life, it is often necessary to locate a device. Currently, common positioning technologies include a satellite positioning technology, a base station positioning technology, an RFID positioning technology, an ultrasonic positioning technology, a WIFI positioning technology, a bluetooth positioning technology, a geomagnetic positioning technology, and the like.

The positioning of the device is realized by an optical communication system, for example, a light emitter in the optical communication system may control a certain point light source (e.g., a laser point light source) to emit different coded light beams in different directions at different times, and a light receiver in the optical communication system may decode the different coded light beams received by the light receiver to determine the relative position between the light receiver and the light emitter.

However, this approach requires a very precise and sensitive point light source direction control mechanism in the light emitter, which is complicated, costly and easily damaged.

SUMMERY OF THE UTILITY MODEL

In view of the above analysis, the present application aims to provide a light emitter and an optical communication system based on a point light source array, which simplify a point light source direction control mechanism and reduce cost.

In a first aspect, one or more embodiments herein provide a light emitter based on an array of point light sources, comprising: a panel and a plurality of point light sources;

the panel is provided with a light guide hole array;

the light guide hole array includes: a plurality of light guide holes;

each light guide hole is provided with one point light source.

Further, the light emitter further comprises: a control circuit;

the control circuit is respectively connected with the point light sources.

Furthermore, the light guide hole is a tapered hole, and light rays emitted by the point light source sequentially pass through the end with the smaller aperture of the tapered hole and the end with the larger aperture of the tapered hole.

Further, the length of the light guide hole is at least 5 times the diameter of the thinnest part of the light guide hole.

Further, the panel is a curved surface.

Furthermore, the extension line of each light guide hole axis on the curved surface converges at a point, and the extension direction of the extension line is opposite to the light emission direction.

Further, the panel is planar. The included angle between the axis of each light guide hole and the plane is different.

Furthermore, the extension line of the axis of each light guide hole converges at one point, and the extension direction of the extension line is opposite to the light emission direction.

Further, the light path of the light source outside the light guide hole coincides with the axis of the light guide hole.

In a second aspect, one or more embodiments herein provide an optical communication system, comprising: at least three optical receivers and the optical transmitter of any one of the first aspect;

the at least three light receivers are not collinear.

Compared with the prior art, the application can at least realize the following technical effects:

a plurality of light paths are constructed by utilizing the light guide holes of the light guide hole array, and a point light source is arranged aiming at each light path, so that the light emitter emits light beams along a plurality of directions. Based on the structure, the worker can adjust the light beam emission direction by starting and stopping the point light source. Compared with the accurate control mode and the regulation and control equipment in the prior art, the light beam emission direction regulation and control device has the advantages that the structure for regulating the light beam emission direction is simple, the production cost of products can be reduced, the damage is not easy to occur, and the service life of the device can be prolonged.

Drawings

In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present specification, and that other drawings may be obtained by those skilled in the art without inventive labor.

FIG. 1 is a schematic structural diagram of a panel according to one or more embodiments of the present disclosure;

fig. 2 is a schematic structural diagram of an optical communication system according to one or more embodiments of the present disclosure.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in one or more embodiments of the present disclosure, the technical solutions in one or more embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in one or more embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all embodiments. All other embodiments that can be derived by a person skilled in the art from one or more of the embodiments described herein without making any inventive step shall fall within the scope of protection of this document.

The embodiment of the application provides a light emitter based on a point light source array, which comprises: the device comprises a panel, a plurality of point light sources and a control circuit. Be provided with the leaded light hole array on the panel, the leaded light hole array includes: a plurality of light guide holes to provide a plurality of light paths. A point light source is arranged in each light guide hole. The point light source may be disposed at one end of the light guide hole and emit a light beam outward through the other end of the light guide hole. The control circuit is respectively connected with the point light sources to control the start and stop of the point light sources. The light guide hole is used for limiting the direction of the light beam, and particularly, the light path of the light source outside the light guide hole coincides with the axis of the light guide hole.

When the detection device works, each point light source on the panel is traversed by the control circuit to complete one-time detection. In one embodiment, during the detection process, the point light sources are turned on in sequence, and only one point light source is turned on at a time. In one embodiment, two or more point sources may be turned on at a time during the detection process.

Specifically, as shown in fig. 1, a light guide hole array is disposed on the panel 1, and the light guide hole array is composed of a plurality of light guide holes 11 facing different angles in the space. In one embodiment, the light guide hole may be a hole having a uniform diameter. In one embodiment, the light guide holes may be tapered holes in order to increase the coverage of the light beam. When the LED lamp works, light rays emitted by the point light source sequentially pass through one end with a smaller aperture of the conical hole and one end with a larger aperture of the conical hole. Namely, the area of the light spot is increased by utilizing the end with larger aperture of the conical hole, so that the coverage area of the light beam is increased.

In one embodiment, to constrain the direction of light emission, the length of the light guide hole is at least 5 times its diameter at its thinnest point.

In the embodiment of the application, the point light source can be selected from an optical fiber and an LED lamp. For the optical fiber, as shown in fig. 1, it may be inserted into the left end of the light guide hole 11. For LED lamps, a bobbin may be provided in the light emitter. One end of the wire placing cylinder is provided with a panel 1, and the control circuit is arranged in the wire placing cylinder. The control circuit is directly connected with the LED lamp.

In the embodiment of the present application, the panel may be a plane or a curved surface.

When the panel is a plane, the included angles between the axes of the light guide holes and the plane are different, so that the angles of the light paths are different, and the angle of the light beam emitted by the light emitter is adjusted conveniently. The light emitter emits a light beam for determining the relative positional relationship of the detection target and the point light source. The accuracy of the measurement can only be guaranteed if the point light source is fixed in position. Therefore, the extension lines of the axes of the light guide holes converge at a point, and the extension direction of the extension lines is opposite to the light emission direction. In the above way, a virtual point light source is constructed at the intersection point of the extension lines of the axes of the light guide holes. The light beams emitted from any angle are all equivalent to those emitted by the virtual point light source.

When the panel is the curved surface and each leaded light hole all was perpendicular with the curved surface, the curved surface makes each leaded light hole's orientation different, needs the camber of curved surface to satisfy the extension line of the light of emission in each leaded light hole on the curved surface (also the extension line of leaded light hole axis) to converge in a point this moment, and the extending direction of extension line is opposite with light emission direction. For example, the panel is a spherical surface, and the extended lines of the light rays emitted from the light guide holes converge at the center of the spherical surface. For aspheric surfaces, light guide holes need to be provided in combination with the specific shape of the panel. In the above way, a virtual point light source is constructed at the intersection point of the extension lines of the axes of the light guide holes. The light beams emitted from any angle are all equivalent to those emitted by the virtual point light source.

An embodiment of the present application provides an optical communication system, including: at least three optical receivers and the optical transmitter described in the above embodiments.

Specifically, as shown in fig. 2, the system includes an optical transmitter 110 and at least three

optical receivers

121, 122, 123. The

light receivers

121, 122, 123 are disposed on the device 120, and the three

light receivers

121, 122, 123 are not collinear and have a predetermined relative positional relationship with each other.

The light emitter 110 is for emitting a light beam having directivity. The

light receivers

121, 122, 123 on the device 120 are used to receive the light beams emitted by the light emitter 110. The device 120 may be an electronic device, such as a cell phone, smart glasses, smart helmet, robot, car, etc. that includes one or more CPUs and a storage device, etc.

In operation, the light emitter 110 may emit different light beams in different directions in its surrounding space based on the array of light guide holes in the panel, each light beam having encoded therein emission angle information of the light beam with respect to the light emitter. These beams may be received by

optical receivers

121, 122, 123 on the device.

Based on the spherical coordinates, with the light emitter 110 as the origin of the coordinate system, the positions of the

light receivers

121, 122, 123 in space are respectively represented as (r) ₁ ，θ ₁ ，φ ₁ )、(r ₂ ，θ ₂ ，φ ₂ )、(r ₃ ，θ ₃ ，φ ₃ ). Where r represents the distance of the optical receiver from the origin of the coordinate system, phi represents the azimuth, and theta represents the elevation.

Based on the emission angle information of the light beam received by each optical receiver, the direction information of the optical receiver with respect to the optical emitter, that is, (theta) can be determined ₁ ，φ ₁ )、(θ ₂ ，φ ₂ )、(θ ₃ ，φ ₃ ). To solve for the remaining 3 unknowns r ₁ 、r ₂ 、r ₃ Three equations can be listed using the positional relationship of the three light receivers to each other (e.g., three relative distance values between the three light receivers) to solve the above-mentioned 3 unknowns r ₁ 、r ₂ 、r ₃ . In this manner, positional information of the three light receivers on the device relative to the light emitters can be determined.

In one embodiment, at least four optical receivers may be disposed on the device 120, which may or may not be coplanar. In one embodiment, at least five optical receivers may be disposed on device 120, which may or may not be coplanar. In one embodiment, any three of the four or five light receivers are not collinear. In one embodiment, more optical receivers may be deployed on the device 120.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the system embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the partial description of the method embodiment for relevant points.

The above description is only an example of this document and is not intended to limit this document. Various modifications and changes may occur to those skilled in the art from this document. Any modifications, equivalents, improvements, etc. which come within the spirit and principle of the disclosure are intended to be included within the scope of the claims of this document.

Claims

1. A light emitter based on an array of point light sources, comprising: a panel and a plurality of point light sources;

the panel is provided with a light guide hole array;

the light guide hole array includes: a plurality of light guide holes;

the point light source is arranged in each light guide hole.

2. The optical transmitter of claim 1,

the light emitter further includes: a control circuit;

the control circuit is respectively connected with the point light sources.

3. The optical transmitter of claim 1,

the light guide hole is a conical hole, and light rays emitted by the point light source sequentially pass through the end with the smaller aperture of the conical hole and the end with the larger aperture of the conical hole.

4. The optical transmitter of claim 1,

the length of the light guide hole is at least 5 times the diameter of the thinnest part of the light guide hole.

5. The optical transmitter of claim 1,

the panel is a curved surface.

6. The optical transmitter of claim 5,

the extension lines of the axes of the light guide holes on the curved surface converge at a point, and the extension direction of the extension lines is opposite to the light emission direction.

7. The optical transmitter of claim 1,

the panel is a plane; and the included angle between the axis of each light guide hole and the plane is different.

8. The optical transmitter of claim 7,

the extension lines of the axes of the light guide holes converge at one point, and the extension direction of the extension lines is opposite to the light emission direction.

9. The optical transmitter of claim 1,

and the light path of the light source outside the light guide hole is superposed with the axis of the light guide hole.

10. An optical communication system, comprising: at least three optical receivers and the optical transmitter of any one of claims 1-9;

the at least three light receivers are not collinear.