Wireless optical communication device with variable visual angle
By designing a wireless optical communication device with a variable viewing angle, and employing laser and LED emitting components and photoelectric detection components with adjustable focal length, the problem of poor applicability of wireless optical communication systems at both long and short distances was solved, and flexible communication link access and signal crosstalk elimination were achieved.
Patent Information
- Application Number
- CN202511639867.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-01-20
AI Technical Summary
Existing wireless optical communication systems cannot simultaneously meet the communication requirements for both long-distance and short-distance ranges, resulting in poor applicability.
A variable-angle wireless optical communication device was designed, comprising a focal-adjustable laser emitting component, an LED emitting component, and a photoelectric detection component, which are connected by threads to form an optical transmission channel. It is also equipped with a focal-adjustable lens component and a signal modulation and demodulation module to achieve dual transmission in the near field and far field and wide-angle reception.
It enables link access communication for devices at different distances, meets the dynamic adjustment requirements of distributed nodes in the communication network, and eliminates signal crosstalk problems.
Smart Images
Figure CN121367541A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of wireless optical communication, and particularly relates to a wireless optical communication device with variable visual angle. BACKGROUND
[0002] In order to improve the security and confidentiality of data transmission of the communication system, the modern wireless information transmission system needs to improve and innovate the existing communication technology by using various effective means, so as to prevent the secret of the transmission information from being detected by the enemy.
[0003] In actual use, due to the omnidirectionality of the radio, the radio communication is easy to be intercepted or detected by the enemy, and the information and target of the self are exposed; under the condition of strong electromagnetic interference, the radio wave is also easy to be disturbed, and the high reliable effective work cannot be realized.
[0004] In order to avoid the deficiency of the radio communication, the wireless optical communication emerges as the times require, wherein the wireless optical communication is a new type of technology for coding and decoding light and communicating through free space. Compared with the radio communication, the wireless optical communication system developed by using light as the transmission medium and the directional characteristics of light has important advantages in safety, anti-electromagnetic interference and the like.
[0005] In addition, the wireless optical communication technology has the advantages of good concealment, strong anti-interference ability and high safety of data communication, and can be used as a communication supplement means under the condition of radio silence and a safe and secret communication means in wartime, and is suitable for use in the scene with complex electromagnetic environment. For the existing wireless optical communication scheme, a laser or an LED is generally used as a light source, and in use, the laser energy of the laser is concentrated, and is suitable for kilometer-level long-distance device communication, and the light energy of the LED is weak, and is suitable for short-distance wireless communication. Therefore, the single wireless optical communication system can only perform light information transmission in a certain distance range and a fixed visual angle, and cannot meet the application requirement of actual random and variable range communication. SUMMARY
[0006] In view of the deficiencies in the background art, the present application provides a wireless optical communication device with variable visual angle, and the technical problem to be solved is that the existing wireless optical communication system cannot simultaneously meet the communication requirements of long-distance range and short-distance range, and has poor applicability.
[0007] In order to solve the above technical problems, the present application provides the following technical scheme: a wireless optical communication device with variable visual angle, comprising a base, wherein a laser emission assembly with adjustable focal length, an LED emission assembly with adjustable focal length and a photoelectric detection assembly with adjustable focal length are arranged on the base. The laser emission assembly comprises a laser emission circuit board, a first mounting seat, a second mounting seat and a laser filter beam expander lens assembly; the first mounting seat and the second mounting seat are threadedly connected and form a laser transmission channel for light transmission after being connected; the laser emission circuit board is mounted on the first mounting seat and is provided with a laser signal modulation module for sending laser to the laser transmission channel; and the laser filter beam expander lens assembly is mounted on the second mounting seat and is used for filtering and expanding the laser sent by the laser transmission channel. The LED emission assembly comprises an LED emission circuit board, a third mounting seat, a fourth mounting seat and an LED filter beam expander lens assembly; the third mounting seat and the fourth mounting seat are threadedly connected and form an LED transmission channel for LED transmission after being connected; the LED emission circuit board is mounted on the third mounting seat and is provided with an LED signal modulation module for sending LED light to the LED transmission channel; and the LED filter beam expander lens assembly is mounted on the fourth mounting seat and is used for filtering and expanding the LED light sent by the LED transmission channel. The photoelectric detection assembly comprises a photoelectric detection circuit board, a fifth mounting seat, a sixth mounting seat and a photoelectric detection lens assembly; the fifth mounting seat and the sixth mounting seat are threadedly connected and form a photoelectric detection channel for light transmission after being connected; the photoelectric detection lens assembly is mounted on the sixth mounting seat and is used for receiving light signals and transmitting the light signals to the photoelectric detection channel; the photoelectric detection circuit board is mounted on the fifth mounting seat and is provided with a photoelectric detection module and a signal demodulation module; the photoelectric detection module is used for receiving the light signals sent by the photoelectric detection module; and the signal demodulation module is used for demodulating the light signals sent by the photoelectric detection module.
[0008] In some embodiments, the first mounting seat, the third mounting seat and the fifth mounting seat have the same structure and are respectively provided with a first threaded mounting hole for mounting the circuit board; The second mounting seat, the fourth mounting seat and the sixth mounting seat have the same structure and are respectively provided with a second threaded mounting hole for mounting the lens assembly.
[0009] In some embodiments, the first mounting seat, the third mounting seat and the fifth mounting seat have a T-shaped cross section along the vertical direction; and the second mounting seat, the fourth mounting seat and the sixth mounting seat have a T-shaped cross section along the vertical direction.
[0010] In some embodiments, the filter range of the laser filter beam expander lens assembly matches the spectral range of the laser.
[0011] In some embodiments, the filter range of the LED filter beam expander lens assembly matches the spectral range of the LED light.
[0012] In some embodiments, scale lines for displaying the focus adjustment amount are arranged on the side walls of the first mount, the third mount and the fifth mount.
[0013] In some embodiments, a rain cover is arranged on the top surface of the base.
[0014] In some embodiments, on the base, the LED emitting assembly is located at the lower left of the base, the photoelectric detection assembly is located at the upper right of the LED emitting assembly, and the laser emitting assembly is located at the upper left of the photoelectric detection assembly and at the upper right of the LED emitting assembly.
[0015] In some embodiments, the application further comprises a network switching module for network device access, which is electrically connected with the laser signal modulation module, the LED signal modulation module and the signal demodulation module respectively, and is used for sending laser modulation control instructions to the laser signal modulation module, sending LED modulation control instructions to the LED signal modulation module and receiving demodulated signals sent by the signal demodulation module, wherein the laser modulation control instructions are used for controlling the laser signal modulation module to generate laser, and the LED modulation control instructions are used for controlling the LED signal modulation module to generate LED light.
[0016] In some embodiments, the network device is connected with the network switching module through a network cable, and the network switching module communicates with the laser signal modulation module, the LED signal modulation module and the signal demodulation module through a network standard protocol.
[0017] Compared with the prior art, the application has the following beneficial effects: Firstly, the laser emitting assembly and the LED emitting assembly can realize the dual-emission wireless optical communication demand of near field and far field, and the photoelectric detection assembly can realize large-angle light signal reception, thereby meeting the link access communication demand of devices at different distances; In addition, by adjusting the focal length of the laser emitting assembly, the LED emitting assembly and the photoelectric detection assembly, the dynamic adjustment of the communication angle and direction can be realized, thereby meeting the communication link demand of each scattered node device in the communication network; Finally, the laser emitting assembly and the LED emitting assembly adopt different spectrum light sources and corresponding lens assemblies, which can eliminate the signal crosstalk problem existing in the wireless optical communication link. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the wireless optical communication device in the embodiment; Figure 2 It is a connection schematic diagram of the first mount and the second mount in the embodiment; Figure 3A schematic diagram of the connection between the network switching module in the embodiment and the laser emitting assembly, the LED emitting assembly and the photodetecting assembly. DETAILED DESCRIPTION
[0019] The illustrative embodiments of the present application include, but are not limited to, a wireless optical communication device with variable field of view.
[0020] The illustrative embodiments will be described with reference to the accompanying drawings, of which examples are shown. The following description is presented for purposes of illustrating the illustrative embodiments and is not intended to limit the application, as described in the claims. The detailed description of the illustrative embodiments is not meant to state all that the application has in common with other embodiments of the application. Rather, it is meant to provide examples of devices and methods consistent with some aspects of the application as detailed in the claims.
[0021] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the present application and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used herein, refers to and encompasses any and all possible combinations of one or more of the associated listed items. The terms "comprises," "comprising," "includes," "including" and the like can be used in the present application and the appended claims to mean that the item in the "comprises," "comprising," "includes," "including" and the like is not exclusive, but is inclusive of the items encompassed by "comprises," "comprising," "includes," "including" and the like. The terms "connected" and "coupled" as used in the present application and the appended claims are intended to be synonymous with each other, unless the context clearly indicates otherwise. As used in the present application and the appended claims, the term "connected" can mean that two or more elements are in direct physical or electrical contact with each other, unless the context clearly indicates otherwise. As used in the present application and the appended claims, the term "coupled" can mean that two or more elements are either in direct physical or electrical contact with each other, or that two or more elements are not in direct contact with each other, but are still in connection as through a third element.
[0022] In order to enable a single wireless optical communication device to simultaneously satisfy the wireless communication of devices at different distances, such as far and near distances, the present embodiment provides a wireless optical communication device with variable field of view, as shown in Figure 1 The present embodiment provides a wireless optical communication device with variable field of view, which includes a base 1, and the base 1 is provided with a laser emitting assembly 2 with adjustable focal length, an LED emitting assembly 3 with adjustable focal length and a photodetecting assembly 4 with adjustable focal length. As shown in Figure 2 and 3 In the present embodiment, the laser emitting assembly 2 includes a laser emitting circuit board, a first mounting seat 20, a second mounting seat 21 and a laser filter beam expander lens assembly 24. The structure and connection relationship of the first mounting seat 20 and the second mounting seat 21 are as shown in Figure 3 and are connected by threads, and after connection, a laser transmission channel 25 for light transmission is formed. The laser emitting circuit board is mounted on the first mounting seat and is provided with a laser signal modulation module 23 for sending laser to the laser transmission channel 25. The laser filter beam expander lens assembly 24 is mounted on the second mounting seat 21 and is used for filtering and beam expanding the laser sent by the laser transmission channel. The LED emission assembly comprises an LED emission circuit board, a third mounting seat, a fourth mounting seat and an LED filter beam expansion lens assembly; in the embodiment, the structure and connection relationship of the third mounting seat and the fourth mounting seat are the same as those of the first mounting seat 20 and the second mounting seat 21, and thus no redundant description is given here; the third mounting seat and the fourth mounting seat are threadedly connected and form an LED transmission channel for transmitting LED after being connected; the LED emission circuit board is mounted on the third mounting seat and is provided with an LED signal modulation module 30 for sending LED light to the LED transmission channel; and the LED filter beam expansion lens assembly 31 is mounted on the fourth mounting seat and is used for filtering and expanding the beam of the LED light sent by the LED transmission channel. The photoelectric detection assembly 4 comprises a photoelectric detection circuit board, a fifth mounting seat, a sixth mounting seat and a photoelectric detection lens assembly; in the embodiment, the structure and connection relationship of the fifth mounting seat and the sixth mounting seat are the same as those of the first mounting seat 20 and the second mounting seat 21, and thus no redundant description is given here; the fifth mounting seat and the sixth mounting seat are threadedly connected and form a photoelectric detection channel for transmitting light after being connected; the photoelectric detection lens assembly is mounted on the sixth mounting seat and is used for receiving a light signal and transmitting the light signal to the photoelectric detection channel; the photoelectric detection circuit board is mounted on the fifth mounting seat and is provided with a photoelectric detection module 41 and a signal demodulation module 40; the photoelectric detection module 41 is used for receiving the light signal sent by the photoelectric detection module; and the signal demodulation module 40 is used for demodulating the light signal sent by the photoelectric detection module.
[0023] In the implementation, the wireless optical communication device in the embodiment can realize the dual-transmission wireless optical communication requirement of near field and far field through the laser emission assembly 2 and the LED emission assembly 3, and can realize the large-angle light signal reception through the photoelectric detection assembly 4, so as to meet the link access communication requirement of devices at different distances. In addition, by adjusting the focal lengths of the laser emission assembly 2, the LED emission assembly 3 and the photoelectric detection assembly 4, the dynamic adjustment of the communication angle and direction can be realized, so as to meet the communication link requirement of the scattered node devices in the communication network. Finally, the laser emission assembly 2 and the LED emission assembly 3 adopt different spectrum light sources and corresponding lens assemblies, so that the signal crosstalk problem existing in the wireless optical communication link can be eliminated.
[0024] In the embodiment, Figure 2 The first mounting seat 20, the third mounting seat and the fifth mounting seat have the same structure and are respectively provided with a first threaded mounting hole 200 for mounting a circuit board; in order to facilitate the stable mounting of the circuit board, two first threaded mounting holes 200 are formed on the first mounting seat 20. The second mount 21, the fourth mount and the sixth mount are identical in structure, and each is provided with a second threaded mounting hole 201 for mounting the lens assembly. Similarly, in order to facilitate stable mounting of the lens assembly, the second mount 21 is provided with two second threaded mounting holes 201 above and below.
[0025] In the present embodiment, the first mount 20, the third mount and the fifth mount are T-shaped in cross-section along the vertical direction, and the second mount 21, the fourth mount and the sixth mount are T-shaped in cross-section along the vertical direction. In Figure 2 In the present embodiment, the first mount 20 includes two cylindrical bodies along the left-right direction, and the left body of the first mount 20 has a larger diameter than the right body. The two first threaded mounting holes 200 are provided on the left body and outside the right body. In Figure 2 In the present embodiment, the second mount 21 includes two cylindrical bodies along the left-right direction, and the left body of the second mount 21 has a smaller diameter than the right body. The two second threaded mounting holes 201 are provided on the right body of the second mount 21 and outside the left body.
[0026] In actual use, in order to facilitate knowing the modulation amount of focal length, the side wall of the first mount 20, the third mount and the fifth mount is provided with a scale line 22 for displaying the adjustment amount of focal length.
[0027] In addition, in the present embodiment, the position of the lens assembly is modulated by rotating the first mount 20 and the second mount 21, so as to achieve focal length adjustment. In some embodiments, other linear driving assemblies can be provided to adjust the position of the lens assembly, such as a linear motor module, a servo motor and a screw drive module.
[0028] In the present embodiment, the filtering range of the laser filtering and expanding lens assembly 24 matches the spectral range of the laser. Along the transmission direction of the laser, the laser filtering and expanding lens assembly 24 includes, in sequence, a homogenizing lens, a collimating lens and a protective glass.
[0029] In the present embodiment, the filtering range of the LED filtering and expanding lens assembly 31 matches the spectral range of the LED light. Along the transmission direction of the laser, the LED filtering and expanding lens assembly 31 includes, in sequence, a homogenizing lens, a collimating lens and a protective glass.
[0030] In the present embodiment, in order to avoid the influence of external environment such as rain on the use of the device, Figure 1 In the present embodiment, the top surface of the base 1 is further provided with a rain cover 5, and rain can be prevented from falling on the base by the rain cover 5.
[0031] In some embodiments, in order to avoid the pollution of natural dust to the lens, the bottom of the base 1 is further provided with a guide rail, a sliding block is arranged on the guide rail, a fan is mounted on the sliding block, and the sliding block is further connected with a driving device capable of driving the sliding block to move on the guide rail; when it is necessary to remove dust, the sliding block is driven to move by the driving device, so that the fan extends out of the base, and then the fan is driven to rotate to blow air on the lens assembly, so as to remove the dust.
[0032] In the embodiment, the positional relationship of the laser emitting assembly 2, the LED emitting assembly 3 and the photoelectric detecting assembly 4 on the base 1 is as shown in Figure 1 On the base 1, the LED emitting assembly 3 is located at the lower left of the base 1, the photoelectric detecting assembly 4 is located at the upper right of the LED emitting assembly 3, and the laser emitting assembly 2 is located at the upper left of the photoelectric detecting assembly 4 and at the upper right of the LED emitting assembly 3.
[0033] In the embodiment, as shown in Figure 3 The application further comprises a network switching module 5 for network equipment access, the network switching module 5 is electrically connected with the laser signal modulation module 23, the LED signal modulation module 30 and the signal demodulation module 40 respectively, and is respectively used for sending a laser modulation control instruction to the laser signal modulation module 23, sending an LED modulation control instruction to the LED signal modulation module 30 and receiving a demodulated signal sent by the signal demodulation module 40, the laser modulation control instruction is used for controlling the laser signal modulation module 23 to generate laser, and the LED modulation control instruction is used for controlling the LED signal modulation module 30 to generate LED light.
[0034] More specifically, in the embodiment, the network equipment is connected with the network switching module 5 through a network cable, and the network switching module 5 communicates with the laser signal modulation module 23, the LED signal modulation module 30 and the signal demodulation module 40 through a network standard protocol.
[0035] In actual use, by connecting a plurality of network node equipment 1-N which need to be accessed into the wireless optical communication system into the network switching module 5 through a standard network cable, the interconnection of the network terminal node equipment can be realized.
[0036] According to the above description, related personnel can make various changes and modifications without deviating from the technical idea of the application. The technical scope of the application is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims
1. A wireless optical communication device with variable field of view, characterized in that, The base is provided with a focal length adjustable laser emitting assembly, a focal length adjustable LED emitting assembly and a focal length adjustable photoelectric detecting assembly. The laser emitting assembly comprises a laser emitting circuit board, a first mounting seat, a second mounting seat and a laser filtering and beam expanding lens assembly; the first mounting seat and the second mounting seat are threadedly connected and form a laser transmission channel for light transmission after being connected; the laser emitting circuit board is mounted on the first mounting seat and is provided with a laser signal modulation module for sending laser to the laser transmission channel; the laser filtering and beam expanding lens assembly is mounted on the second mounting seat and is used for filtering and beam expanding the laser sent by the laser transmission channel. The LED emitting assembly comprises an LED emitting circuit board, a third mounting seat, a fourth mounting seat and an LED filtering and beam expanding lens assembly; the third mounting seat and the fourth mounting seat are threadedly connected and form an LED transmission channel for LED transmission after being connected; the LED emitting circuit board is mounted on the third mounting seat and is provided with an LED signal modulation module for sending LED light to the LED transmission channel; the LED filtering and beam expanding lens assembly is mounted on the fourth mounting seat and is used for filtering and beam expanding the LED light sent by the LED transmission channel. The photoelectric detecting assembly comprises a photoelectric detecting circuit board, a fifth mounting seat, a sixth mounting seat and a photoelectric detecting lens assembly; the fifth mounting seat and the sixth mounting seat are threadedly connected and form a photoelectric detecting channel for light transmission after being connected; the photoelectric detecting lens assembly is mounted on the sixth mounting seat and is used for receiving light signals and transmitting the light signals to the photoelectric detecting channel; the photoelectric detecting circuit board is mounted on the fifth mounting seat and is provided with a photoelectric detecting module and a signal demodulation module; the photoelectric detecting module is used for receiving the light signals sent by the photoelectric detecting module; the signal demodulation module is used for demodulating the light signals sent by the photoelectric detecting module.
2. The variable angle of view wireless optical communication device according to claim 1, wherein, The first mounting seat, the third mounting seat and the fifth mounting seat are identical in structure and are respectively provided with a first threaded mounting hole for mounting the circuit board; The second mounting seat, the fourth mounting seat and the sixth mounting seat are identical in structure and are respectively provided with a second threaded mounting hole for mounting the lens assembly.
3. A variable angle of view wireless optical communication device according to claim 2, wherein, The first mounting seat, the third mounting seat and the fifth mounting seat are T-shaped in vertical cross section; the second mounting seat, the fourth mounting seat and the sixth mounting seat are T-shaped in vertical cross section.
4. The variable angle of view wireless optical communication device according to claim 1, wherein, The filtering range of the laser filtering and beam expanding lens assembly matches the spectral range of the laser.
5. The variable view angle wireless optical communication device according to claim 1 or 4, wherein, The filtering range of the LED filtering and beam expanding lens assembly matches the spectral range of the LED light.
6. The variable angle of view wireless optical communication device according to claim 1, wherein The side wall of the first mounting seat, the third mounting seat and the fifth mounting seat is provided with a scale line for displaying the focal length adjustment amount.
7. The variable angle of view wireless optical communication device according to claim 1, wherein The top surface of the base is further provided with a rain cover.
8. The variable angle of view wireless optical communication device according to claim 1, wherein On the base, the LED emitting assembly is located at the lower left of the base, the photoelectric detecting assembly is located at the upper right of the LED emitting assembly, and the laser emitting assembly is located at the upper left of the photoelectric detecting assembly and at the upper right of the LED emitting assembly.
9. The variable angle of view wireless optical communication device according to claim 1, wherein, The network switching module for network device access is electrically connected with the laser signal modulation module, the LED signal modulation module and the signal demodulation module respectively, and is respectively used for sending a laser modulation control instruction to the laser signal modulation module, sending an LED modulation control instruction to the LED signal modulation module and receiving a demodulation signal sent by the signal demodulation module, wherein the laser modulation control instruction is used for controlling the laser signal modulation module to generate laser, and the LED modulation control instruction is used for controlling the LED signal modulation module to generate LED light.
10. The variable view angle wireless optical communication device of claim 9, wherein, The network device is connected with the network switching module through a network cable, and the network switching module communicates with the laser signal modulation module, the LED signal modulation module and the signal demodulation module through a network standard protocol.