Short-distance large-offset multichannel wireless optical module

Abstract

A short-distance large-offset multichannel wireless optical module comprises a printed board assembly, a lens and a shell, the lens is used for shaping optical signals, and the printed board assembly is two printed boards connected through a flexible board. Wherein one printed board is arranged in the shell and is provided with an electric connector, and the side, provided with the electric connector, of the printed board is detachably connected with a client board card; an electric chip is arranged on the other printed board, and the lens is arranged on the printed board and is coupled with an optical active component on the electric chip; the optical active component comprises a transmitting end and a receiving end which are regularly arranged, and transmitting and receiving are integrated. According to the utility model, the lens and the optical active component are arranged, so that radial large offset tolerance is realized, and the problem of optical axis alignment between modules is solved; and the optical modules can be used in pairs without optical fiber connection.

Description

Technical Field

[0001] This utility model belongs to the field of wireless optical communication technology, specifically relating to a short-range, large-offset, multi-channel wireless optical module. Background Technology

[0002] With the rapid development of fiber optic communication technology, multi-channel parallel optical modules are increasingly widely used in radar communication boards. Currently, optical modules are mainly divided into pigtail optical modules and inter-board wireless optical modules, both using standard MT optical ports at the interface, combined with MT clips or guide pins. However, pigtail optical fibers have bending radius requirements, making them unsuitable in limited spaces, and pigtails are difficult to install; inter-board wireless optical modules have fewer channels and lower speeds, employing a pure rigid plate structure and standard MT optical ports. When the optical axes of the two modules shift due to assembly errors or deformation under stress, the signal transmission quality can easily be reduced.

[0003] Therefore, there is a need for an easy-to-install, multi-channel optical module that can meet large offset tolerances. Utility Model Content

[0004] In view of this, in order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a short-range, large-offset multi-channel wireless optical module with simple structure, easy installation, low cost, and the ability to achieve large radial offset tolerance, thus solving the problem of optical axis alignment between modules.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A short-range, large-offset, multi-channel wireless optical module is disclosed. The optical module includes a printed circuit board assembly, a lens for shaping optical signals, and a housing. The printed circuit board assembly consists of two printed circuit boards connected by a flexible PCB. One printed circuit board is disposed within the housing and has an electrical connector. The side of the printed circuit board with the electrical connector is detachably connected to a customer board. The other printed circuit board has an electrical chip. The lens is disposed on this printed circuit board and coupled to an optical active component on the electrical chip. The optical active component includes a regularly arranged transmitter and receiver.

[0007] Alternatively, the optical modules are used in pairs, with the lenses of the two paired optical modules positioned face-to-face and spaced apart.

[0008] Furthermore, when using two optical modules in pairs, the light inlet of one optical module lens corresponds to the light outlet of the other optical module lens.

[0009] Furthermore, the active optical component includes a laser and / or a detector.

[0010] Furthermore, the lens is a 2×4 array, and the corresponding optical active component is also a 2×4 array. Each lens is coaxially coupled to the corresponding optical active component, and each optical active component is located at the focal point of the corresponding lens.

[0011] Furthermore, the receiving / transmitting end is a 2×2 array.

[0012] Specifically, the lens has a single-channel diameter of 2mm and a radial offset tolerance of ±0.5mm.

[0013] The beneficial effects of the utility model are:

[0014] This utility model features an integrated optical module transceiver design and incorporates a non-standard lens to work with the transceiver module, achieving a large radial offset tolerance and solving the problem of optical axis alignment between modules. Furthermore, the lens has a radial offset tolerance of ±0.5mm, enabling communication within a spacing of 10mm.

[0015] The optical module adopts a rigid-flexible-rigid integrated structure, which makes the installation error tolerance stronger, and the length of the flexible board can be customized according to the needs to meet different installation requirements.

[0016] The device is detachable via LGA. When the optical modules are paired, no guide pins are needed; they can be fixed with screws only. It can transmit signals without fiber optics by connecting the transceiver ports of the two lenses. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the optical module of this utility model;

[0019] Figure 2 This is a left view of the optical module of this utility model;

[0020] Figure 3 This is a top view of the optical module of this utility model;

[0021] Figure 4 This is a perspective view of the optical module of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the optical module of this utility model when used in pairs.

[0023] The attached diagram is labeled as follows: 1. Lens, 2. Printed circuit board assembly, 3. Flexible board, 4. Housing, 5. Electrical connector, 6. Customer board. Detailed Implementation

[0024] The following specific embodiments provide a clearer, more complete, and more detailed explanation of the technical solution of this utility model. These embodiments are the preferred embodiments based on the technical solution of this utility model, but the scope of protection of this utility model is not limited to the following embodiments.

[0025] Example 1:

[0026] A short-range, large-offset, multi-channel wireless optical module includes: a printed circuit board assembly 2, a lens 1 for shaping optical signals, and a housing 4. The printed circuit board assembly 2 consists of two printed circuit boards connected by a flexible PCB 3. One printed circuit board is disposed within the housing 4 and has an electrical connector 5. The side of the printed circuit board with the electrical connector is detachably connected to a customer board 6. The other printed circuit board has an electrical chip. The lens is disposed on the printed circuit board and coupled to an optical active component on the electrical chip. The optical active component includes a regularly arranged transmitter and receiver.

[0027] This utility model features a wireless optical module that integrates transceiver and rigid-flexible-rigid design, enhancing its tolerance for installation errors. The length of the flexible board can be customized. The mounting accuracy of the laser and detector is within ±5µm.

[0028] Furthermore, the active optical component includes a laser and / or a detector.

[0029] Furthermore, the lens 1 is a 2×4 array, and the corresponding optical active component is also a 2×4 array. Each lens 1 is coaxially coupled with the corresponding optical active component, and each optical active component is located at the focal point of the corresponding lens 1.

[0030] Furthermore, the optical module implements a total of 8 channels for transmission and reception. The receiving end and the transmitting end are both 2×2 arrays, integrating transmission and reception, with four channels for transmission and four channels for reception, so as to realize the convergence of the received parallel light onto the detector through lens 1 and the expansion of the light emitted by the laser into parallel light through lens 1.

[0031] Specifically, the lens 1 has a single-channel diameter of 2mm and a radial offset tolerance of ±0.5mm. A large radial offset is achieved through the design of the non-standard lens 1. In this embodiment, the lens 1 has a radial offset tolerance of ±0.5mm, allowing communication within a spacing of 10mm. This solves the problem of optical axis alignment between modules, avoids optical axis misalignment due to assembly errors or deformation under stress, and greatly improves signal transmission quality.

[0032] The optical modules are used in pairs, and the lenses 1 of the two optical modules are arranged opposite each other. The light inlet of one optical module lens 1 corresponds to the light outlet of the other optical module lens 1, so that the lens 1 expands the light emitted by the active optical component into parallel light and emits it to the light inlet of the opposite lens 1, or focuses the parallel light emitted from the light outlet of the opposite lens 1 onto the detector.

[0033] When used in pairs, no optical fiber or guide pin is required; the device can be secured using only screws.

[0034] Furthermore, the electrical connector 5 is an LGA connector. In this embodiment, it can be fixed to the customer's printed circuit board with screws, thereby achieving a detachable connection with the customer's board 6. The electrical connector 5 can be used multiple times and the product is easy to install and remove.

[0035] Furthermore, the electrical connector 5 is provided with a spring-loaded contact for resilient contact and conduction with the customer board 6.

[0036] Furthermore, the lens 1 is provided with a transparent protective shell on its outer side, which protects the lens 1 without affecting the emission and injection of light.

[0037] In summary, this utility model provides a short-range, large-offset, multi-channel wireless optical module. This optical module has a simple structure and is easy to install. By using lens 1 in conjunction with the corresponding active optical component, it can achieve a large radial offset tolerance, solving the problem of optical axis alignment between modules. Furthermore, this optical module can be used in pairs without the need for fiber optic connections, making it more convenient.

[0038] The foregoing has shown and described the main features, basic principles, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model based on actual circumstances without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A short-range, large-offset, multi-channel wireless optical module, comprising a printed circuit board assembly (2), a lens (1) for shaping optical signals, and a housing (4), characterized in that: The printed circuit board assembly consists of two printed circuit boards connected by a flexible board (3); one printed circuit board is disposed inside a housing (4) and is provided with an electrical connector (5), and the side of the printed circuit board with the electrical connector (5) is detachably connected to a customer board (6); the other printed circuit board is provided with an electrical chip, and the lens (1) is disposed on the printed circuit board and coupled to the optical active component on the electrical chip; wherein the optical active component includes a regularly arranged transmitter and receiver.

2. The short-range, large-offset multi-channel wireless optical module according to claim 1, characterized in that: The optical modules are used in pairs, and the lenses (1) of the two optical modules used in pairs are arranged face-to-face with a distance between them.

3. A short-range, large-offset, multi-channel wireless optical module according to claim 2, characterized in that: The two optical modules used in pairs have their light inlet of one optical module lens corresponding to the light outlet of the other optical module lens.

4. The short-range, large-offset multi-channel wireless optical module according to claim 1, characterized in that: The active optical component includes a laser and / or a detector.

5. A short-range, large-offset, multi-channel wireless optical module according to claim 1, characterized in that: The optical module enables a total of 8 channels for transmission and reception.

6. A short-range, large-offset multi-channel wireless optical module according to claim 5, characterized in that: The lens (1) is a 2×4 array, and the corresponding light active component is also a 2×4 array. Each lens (1) is coaxially coupled with the corresponding light active component, and each light active component is located at the focal point of the corresponding lens (1).

7. A short-range, large-offset, multi-channel wireless optical module according to claim 1, characterized in that: The receiver / transmitter is a 2×2 array.

8. A short-range, large-offset, multi-channel wireless optical module according to any one of claims 1-7, characterized in that: The lens (1) has a single-channel diameter of 2 mm and a radial offset tolerance of ±0.5 mm.

9. A short-range, large-offset, multi-channel wireless optical module according to claim 8, characterized in that: The electrical connector (5) is an LGA connector.

10. A short-range, large-offset multi-channel wireless optical module according to claim 9, characterized in that: The electrical connector (5) is provided with a spring-loaded contact for resilient contact and conduction with the customer board (6).

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