WO2021109776A1

WO2021109776A1 - Optical module

Info

Publication number: WO2021109776A1
Application number: PCT/CN2020/126300
Authority: WO
Inventors: 杨思更; 姜双弟; 刘旭霞
Original assignee: 青岛海信宽带多媒体技术有限公司
Priority date: 2019-12-03
Filing date: 2020-11-03
Publication date: 2021-06-10
Also published as: CN112904494B; CN112904494A

Abstract

An optical module (200), comprising: a circuit board (105), an optical transmitter (301), an optical detector (302), an optical receiver (303), a lens assembly (400), and an optical fiber ribbon (500). The optical fiber ribbon (500) is connected to the lens assembly (400). The lens assembly (400) has a top surface provided with a first recessed portion (401) and a second recessed portion (402), a bottom surface provided with a first lens matrix (4051) and a second lens matrix (4052), and a side surface provided with a third recessed portion (403). A bottom surface of the first recessed portion (401) comprises a first inclined surface (4013), a second inclined surface (4011), and a third inclined surface (4012); a reflector (404) is obliquely placed in the first recessed portion (401); a cavity is formed between the reflector (404) and the second inclined surface (4011) as well as the third inclined surface (4012); a first reflection surface (4021) is formed on a bottom surface of the second recessed portion (402); a third lens matrix (4032) is disposed on an end surface of the third recessed portion (403). The optical module (200) facilitates achieving that a light spot on the optical fiber ribbon (500) of a light beam emitted by the optical transmitter (301) by means of the lens assembly (400), and a light spot on the optical receiver (303) of a light beam transmitted to the lens assembly (400) via the optical fiber ribbon (500) simultaneously reach the best.

Description

一种光模块An optical module

本申请要求在2019年12月03日提交中国专利局、申请号为201911222045.2、发明名称为“一种光模块”的优先权，其全部内容通过引用结合在本公开中。This application claims the priority of being filed with the Chinese Patent Office on December 03, 2019, with the application number of 201911222045.2, and the title of the invention as "a kind of optical module", the entire content of which is incorporated into this disclosure by reference.

技术领域Technical field

本公开涉及光通信技术领域，尤其涉及一种光模块。The present disclosure relates to the field of optical communication technology, and in particular to an optical module.

背景技术Background technique

光模块主要用于光电、电光转换，其发射端将电信号转换为光信号并通过光纤传输出去，其接收端将接收到的光信号转换为电信号。目前光模块的封装形式主要包括TO(Transistor-Outline，同轴)封装和COB(Chip on Board,板上芯片)封装。The optical module is mainly used for photoelectric and electro-optical conversion. The transmitting end converts the electrical signal into an optical signal and transmits it through the optical fiber, and the receiving end converts the received optical signal into an electrical signal. At present, the packaging forms of optical modules mainly include TO (Transistor-Outline, coaxial) packaging and COB (Chip on Board) packaging.

COB封装形式的光模块中，光发射器和光接收器分别贴装在电路板上，透镜组件罩设在光发射器和光接收器上，透镜组件连接光纤，光发射器发射的光信号通过透镜组件改变方向后传输至光纤，通过光纤传输至透镜组件光信号，通过透镜组件改变方向后传输至光接收器上。In the COB packaged optical module, the optical transmitter and the optical receiver are respectively mounted on the circuit board, the lens assembly is covered on the optical transmitter and the optical receiver, the lens assembly is connected to the optical fiber, and the optical signal emitted by the optical transmitter passes through the lens assembly After changing the direction, the optical signal is transmitted to the optical fiber, the optical signal is transmitted to the lens assembly through the optical fiber, and the optical signal is transmitted to the optical receiver after changing the direction through the lens assembly.

发明内容Summary of the invention

本公开实施例提供一种光模块，其主要包括：电路板；光发射器，设置在电路板上，用于发射光信号；光探测器，设置在电路板上，用于接收光发射器发射的部分光信号；光接收器，设置在电路板上，用于接收来自光模块外部的光信号；透镜组件，罩设在光发射器、光探测器和光接收器上，改变信号光束的传播方向；光纤带，用于连接透镜组件；其中，透镜组件的顶面包括第一凹陷部和第二凹陷部，透镜组件的底面设置第一透镜矩阵和第二透镜矩阵，透镜组件的侧面包括第三凹陷部；第二凹陷部的底面形成第一反射面，第一反射面用于反射来自光模块外部传播至第一反射面的光束；第一透镜矩阵用于汇聚光发射器发出的光束，第二透镜矩阵用于汇聚第一反射面反射的光束至光接收器；第一凹陷部的底面形成第一斜面、第二斜面和第三斜面，第一斜面上承托设置反射镜，第二斜面、第三斜面和反射镜之间形成空腔；第二斜面用于折射和反射来自第一透镜矩阵的光束，反射镜用于反射通过第二斜面折射的光束，第三斜面用于折射通过反射镜反射的光束；第三凹陷部的端面上设置第三透镜矩阵，第三透镜矩阵用于将通过第三斜面折射的光束汇聚至光纤带以及将来自光纤带的光束汇聚传输至第一反射面。The embodiment of the present disclosure provides an optical module, which mainly includes: a circuit board; an optical transmitter, which is arranged on the circuit board, and is used to emit light signals; a light detector, which is arranged on the circuit board, and is used to receive the light emitted by the optical transmitter Part of the optical signal; optical receiver, set on the circuit board, used to receive the optical signal from the outside of the optical module; lens assembly, set on the optical transmitter, photodetector and optical receiver, change the propagation direction of the signal beam The optical fiber ribbon is used to connect the lens assembly; wherein the top surface of the lens assembly includes a first recessed portion and a second recessed portion, the bottom surface of the lens assembly is provided with a first lens matrix and a second lens matrix, and the side surface of the lens assembly includes a third Depressed portion; the bottom surface of the second recessed portion forms a first reflective surface, the first reflective surface is used to reflect the light beam from the outside of the optical module to the first reflective surface; the first lens matrix is used to converge the light beam emitted by the light emitter, The two-lens matrix is used to converge the light beams reflected by the first reflecting surface to the light receiver; the bottom surface of the first recessed portion forms a first inclined surface, a second inclined surface and a third inclined surface, the first inclined surface supports a reflecting mirror, and the second inclined surface A cavity is formed between the third inclined surface and the reflecting mirror; the second inclined surface is used to refract and reflect the light beam from the first lens matrix, the reflecting mirror is used to reflect the light beam refracted by the second inclined surface, and the third inclined surface is used to refract and reflect the light beam. A mirror-reflected light beam; a third lens matrix is provided on the end surface of the third recessed portion, and the third lens matrix is used to converge the light beam refracted by the third oblique surface to the optical fiber ribbon and converge and transmit the light beam from the optical fiber ribbon to the first reflecting surface .

本公开实施例还提供一种光模块，包括电路板；光发射器，设置在电路板上，用于发射光信号；光接收器，设置在电路板上，用于接收来自光模块外部的光信号；透镜组件，罩设在光发射器和光接收器上，改变信号光束的传播方向；光纤带，用于连接透镜组件；其中，透镜组件的顶面包括第一凹陷部，透镜组件的底面设置第一透镜矩阵和第二透镜矩阵，透镜组件的侧面包括第三凹陷部；第一凹陷部的底面形成第二反射面，第二反射面用于反射来自光模块外部传播至第二反射面的光束以及来自光发射器传播至第二反射面的光束；第一透镜矩阵用于汇聚光发射器发出的光束，第二透镜矩阵用于汇聚第二反射面反射的光束至光接收器；第三凹陷部的端面上设置第三透镜矩阵，第三透镜矩阵用于将通过第二反射面反射的光束汇聚至光纤带以及将来自光纤带的光束汇聚传输至第二反射面。The embodiments of the present disclosure also provide an optical module, including a circuit board; an optical transmitter, which is arranged on the circuit board, and is used for transmitting optical signals; an optical receiver, which is arranged on the circuit board, and is used for receiving light from outside the optical module. Signal; the lens assembly, which is covered on the light transmitter and the light receiver, changes the propagation direction of the signal beam; the optical fiber ribbon is used to connect the lens assembly; wherein the top surface of the lens assembly includes a first recess, and the bottom surface of the lens assembly is set The first lens matrix and the second lens matrix, the side surface of the lens assembly includes a third recessed portion; the bottom surface of the first recessed portion forms a second reflective surface, the second reflective surface is used to reflect from the outside of the optical module to the second reflective surface The light beam and the light beam propagated from the light emitter to the second reflective surface; the first lens matrix is used to converge the light beam emitted by the light emitter, and the second lens matrix is used to converge the light beam reflected by the second reflective surface to the light receiver; third A third lens matrix is arranged on the end surface of the recess, and the third lens matrix is used to converge the light beam reflected by the second reflection surface to the optical fiber ribbon and converge and transmit the light beam from the optical fiber ribbon to the second reflection surface.

附图说明Description of the drawings

为了更清楚地说明本公开的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to explain the technical solutions of the present disclosure more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, for those of ordinary skill in the art, without creative labor, Other drawings can also be obtained from these drawings.

图1为光通信终端连接关系示意图；Figure 1 is a schematic diagram of the connection relationship of an optical communication terminal;

图2为光网络单元结构示意图；Figure 2 is a schematic diagram of the structure of an optical network unit;

图3为本公开实施例中提供的一种光模块的结构示意图；FIG. 3 is a schematic structural diagram of an optical module provided in an embodiment of the disclosure;

图4为本公开实施例中提供的一种光模块的分解结构示意图；4 is a schematic diagram of an exploded structure of an optical module provided in an embodiment of the disclosure;

图5为本公开实施例中电路板的结构图；Fig. 5 is a structural diagram of a circuit board in an embodiment of the disclosure;

图6为本公开实施例中第一种透镜组件的顶面图；Fig. 6 is a top view of the first lens assembly in an embodiment of the disclosure;

图7为本公开实施例中第一种透镜组件的底面图；Fig. 7 is a bottom view of the first lens assembly in an embodiment of the disclosure;

图8为本公开实施例中第一种透镜组件的端面图；Fig. 8 is an end view of the first lens assembly in an embodiment of the disclosure;

图9为本公开实施例中第一种透镜组件结构情况下光模块的局部剖视图一；9 is a partial cross-sectional view 1 of the optical module in the case of the first lens assembly structure in the embodiment of the disclosure;

图10为本公开实施例中第一种透镜组件结构情况下光模块的局部剖视图二；10 is a second partial cross-sectional view of the optical module in the case of the first lens assembly structure in the embodiment of the disclosure;

图11为本公开实施例中第一种透镜组件结构情况下光模块的局部剖视图三；11 is the third partial cross-sectional view of the optical module in the case of the first lens assembly structure in the embodiment of the disclosure;

图12为本公开实施例中第一凹陷部位置处的局部截面结构放大示意图；12 is an enlarged schematic diagram of a partial cross-sectional structure at the position of the first recessed portion in the embodiment of the disclosure;

图13为本公开实施例中发射光束的传输光路结构示意图；FIG. 13 is a schematic diagram of the transmission optical path structure of the emitted light beam in an embodiment of the disclosure;

图14为本公开实施例中第二凹陷部位置处的局部截面结构放大示意图；14 is an enlarged schematic diagram of a partial cross-sectional structure at the position of the second recessed portion in an embodiment of the disclosure;

图15为本公开实施例中接收光束的传输光路结构示意图；15 is a schematic diagram of the structure of the transmission optical path of the received light beam in an embodiment of the disclosure;

图16本公开实施例中第二种透镜组件的顶面图；Fig. 16 is a top view of a second lens assembly in an embodiment of the present disclosure;

图17为本公开实施例中第二种透镜组件的底面图；Fig. 17 is a bottom view of a second lens assembly in an embodiment of the disclosure;

图18本公开实施例中第二种透镜组件结构情况下光模块的局部剖视图一；Fig. 18 is a partial cross-sectional view 1 of the optical module in the case of the second lens assembly structure in the embodiment of the present disclosure;

图19为本公开实施例中第二种透镜组件结构情况下光模块的局部剖视图二；19 is a second partial cross-sectional view of the optical module in the case of the second lens assembly structure in the embodiment of the disclosure;

图20为本公开实施例中第二种透镜组件结构情况下光模块的局部剖视图三；FIG. 20 is a third partial cross-sectional view of the optical module in the case of the second lens assembly structure in the embodiment of the disclosure; FIG.

图21为本公开实施例中光模块在光发射器位置处的局部截面结构放大示意图；21 is an enlarged schematic diagram of a partial cross-sectional structure of an optical module at a position of a light emitter in an embodiment of the disclosure;

图22为图21中光发射器发射光束的传输光路结构示意图；22 is a schematic diagram of the transmission optical path structure of the light beam emitted by the light emitter in FIG. 21;

图23为本公开实施例中光模块在光接收器位置处的局部截面结构放大示意图；FIG. 23 is an enlarged schematic diagram of a partial cross-sectional structure of an optical module at a position of an optical receiver in an embodiment of the disclosure; FIG.

图24为图23中光接收器接收光束的传输光路结构示意图；24 is a schematic diagram of the structure of the transmission optical path of the light beam received by the optical receiver in FIG. 23;

图25为本公开实施例中光发射器发射光路原理图；FIG. 25 is a schematic diagram of the emission light path of the light transmitter in the embodiment of the disclosure; FIG.

图26为本公开实施例中光接收器接收光路原理图。FIG. 26 is a schematic diagram of the receiving optical path of the optical receiver in the embodiment of the disclosure.

具体实施方式Detailed ways

下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

光纤通信的核心环节之一是光、电信号的相互转换。光纤通信使用携带信息的光信号在光纤/光波导等信息传输设备中传输，利用光在光纤/光波导中的无源传输特性可以实现低成本、低损耗的信息传输；而计算机等信息处理设备使用的是电信号，为了在光纤/光波导等信息传输设备与计算机等信息处理设备之间建立信息连接，就需要实现电信号与光信号的相互转换。One of the core links of optical fiber communication is the mutual conversion of optical and electrical signals. Optical fiber communication uses information-carrying optical signals to be transmitted in optical fibers/optical waveguides and other information transmission equipment. The passive transmission characteristics of light in optical fibers/optical waveguides can achieve low-cost and low-loss information transmission; and computers and other information processing equipment Electrical signals are used. In order to establish an information connection between information transmission equipment such as optical fibers/optical waveguides and information processing equipment such as computers, it is necessary to realize mutual conversion between electrical signals and optical signals.

光模块在光纤通信技术领域中实现上述光、电信号的相互转换功能，光信号与电信号的相互转换是光模块的核心功能。光模块通过其内部电路板上的金手指实现与外部上位机之间的电连接，主要的电连接包括供电、I2C信号、数据信号以及接地等；采用金手指实现的电连接方式已经成为光模块行业的主流连接方式，以此为基础，金手指上引脚的定义形成了多种行业协议/规范。The optical module realizes the above-mentioned mutual conversion function of optical and electrical signals in the field of optical fiber communication technology, and the mutual conversion of optical signals and electrical signals is the core function of the optical module. The optical module realizes the electrical connection with the external host computer through the golden finger on its internal circuit board. The main electrical connections include power supply, I2C signal, data signal and grounding, etc.; the electrical connection method realized by the golden finger has become the optical module The mainstream connection method of the industry, based on this, the definition of the pins on the golden finger has formed a variety of industry protocols/standards.

图1为光通信终端连接关系示意图。如图1所示，光通信终端的连接主要包括光网络单元100、光模块200、光纤101及网线103之间的相互连接。Figure 1 is a schematic diagram of the connection relationship of an optical communication terminal. As shown in FIG. 1, the connection of the optical communication terminal mainly includes the interconnection between the optical network unit 100, the optical module 200, the optical fiber 101 and the network cable 103.

光纤的101一端连接远端服务器，网线103的一端连接本地信息处理设备，本地信息处理设备与远端服务器的连接由光纤101与网线103的连接完成；而光纤101与网线103之间的连接由具有光模块200的光网络单元100完成。One end of the optical fiber 101 is connected to the remote server, and one end of the network cable 103 is connected to the local information processing equipment. The connection between the local information processing equipment and the remote server is completed by the connection of the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is The optical network unit 100 with the optical module 200 is completed.

光模块200的光口对外接入光纤101，与光纤101建立双向的光信号连接；光模块200的电口对外接入光网络终端100中，与光网络终端100建立双向的电信号连接；在光模块内部实现光信号与电信号的相互转换，从而实现在光纤与光网络终端之间建立信息连接；具体地，来自光纤的光信号由光模块转换为电信号后输入至光网络终端100中，来自光网络终端100的电信号由光模块转换为光信号输入至光纤中。The optical port of the optical module 200 is externally connected to the optical fiber 101 to establish a bidirectional optical signal connection with the optical fiber 101; the electrical port of the optical module 200 is externally connected to the optical network terminal 100 to establish a bidirectional electrical signal connection with the optical network terminal 100; The optical module realizes the mutual conversion between optical signals and electrical signals, thereby realizing the establishment of an information connection between the optical fiber and the optical network terminal; specifically, the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network terminal 100 , The electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module and input into the optical fiber.

光网络终端具有光模块接口102，用于接入光模块200，与光模块200建立双向的电信号连接；光网络终端具有网线接口104，用于接入网线103，与网线103建立双向的电信号连接；光模块200与网线103之间通过光网络终端100建立连接，具体地，光网络终端将来自光模块的信号传递给网线，将来自网线的信号传递给光模块，光网络终端作为光模块的上位机监控光模块的工作。The optical network terminal has an optical module interface 102, which is used to connect to the optical module 200 and establish a two-way electrical signal connection with the optical module 200; the optical network terminal has a network cable interface 104, which is used to connect to the network cable 103 and establish a two-way electrical connection with the network cable 103. Signal connection; a connection is established between the optical module 200 and the network cable 103 through the optical network terminal 100. Specifically, the optical network terminal transmits the signal from the optical module to the network cable, and transmits the signal from the network cable to the optical module, and the optical network terminal serves as the optical The upper computer of the module monitors the work of the optical module.

至此，远端服务器通过光纤101、光模块200、光网络单元100及网线103，与本地信息处理设备之间建立双向的信号传递通道。So far, the remote server establishes a two-way signal transmission channel with the local information processing equipment through the optical fiber 101, the optical module 200, the optical network unit 100, and the network cable 103.

常见的信息处理设备包括路由器、交换机、电子计算机等；光网络单元100是光模块200的上位机，向光模块200提供数据信号，并接收来自光模块200的数据信号，常见的光模块200上位机还有光线路终端等。Common information processing equipment includes routers, switches, electronic computers, etc.; the optical network unit 100 is the upper computer of the optical module 200, which provides data signals to the optical module 200 and receives data signals from the optical module 200. The common optical module 200 is upper-level The machine also has optical line terminals and so on.

图2为光网络单元结构示意图。如图2所示，在光网络单元100中具有电路板105，在电路板105的表面设置笼子106；在笼子106中设置有电连接器，用于接入金手指等光模块电口；在笼子106上设置有散热器107，散热器107具有增大散热面积的翅片等凸起结构。Figure 2 is a schematic diagram of the optical network unit structure. As shown in Figure 2, the optical network unit 100 has a circuit board 105, and a cage 106 is provided on the surface of the circuit board 105; an electrical connector is provided in the cage 106 for accessing optical module electrical ports such as golden fingers; A radiator 107 is provided on the cage 106, and the radiator 107 has a convex structure such as fins to increase the heat dissipation area.

光模块200***光网络单元中，具体为光模块的电口***笼子106中的电连接器，光模块200的光口与光纤101连接。The optical module 200 is inserted into the optical network unit, specifically, the electrical port of the optical module is inserted into the electrical connector in the cage 106, and the optical port of the optical module 200 is connected to the optical fiber 101.

笼子106位于电路板上，将电路板上的电连接器包裹在笼子中；光模块200***笼子中，由笼子固定光模块200，光模块200产生的热量通过光模块壳体传导给笼子，最终通过笼子上的散热器107进行扩散。The cage 106 is located on the circuit board and wraps the electrical connectors on the circuit board in the cage; the optical module 200 is inserted into the cage, and the optical module 200 is fixed by the cage. The heat generated by the optical module 200 is transmitted to the cage through the optical module housing, and finally Diffusion is carried out through the radiator 107 on the cage.

图3为本公开实施例提供的一种光模块200的结构示意图，图4为本公开实施例提供光模块200的分解结构示意图。如图3和图4所示，本公开实施例提供的光模块200包括上壳体201、下壳体202、解锁部件203、电路板300及透镜组件400。FIG. 3 is a schematic structural diagram of an optical module 200 according to an embodiment of the present disclosure, and FIG. 4 is an exploded structural schematic diagram of an optical module 200 according to an embodiment of the disclosure. As shown in FIG. 3 and FIG. 4, the optical module 200 provided by the embodiment of the present disclosure includes an upper housing 201, a lower housing 202, an unlocking component 203, a circuit board 300 and a lens assembly 400.

上壳体201盖合在下壳体202上，以形成具有两个开口的包裹腔体，包裹腔体的外轮廓一般呈现为方形体形状。在本申请的某些实施例中，下壳体202包括主板以及位于主板两侧、与主板垂直设置的两个侧板；上壳体201包括盖板，盖板盖合在上壳体201的两个侧板上，以形成包裹腔体；上壳体201还可以包括位于盖板两侧、与盖板垂直设置的两个侧壁，由两个侧壁与两个侧板结合，以实现上壳体201盖合在下壳体202上。The upper shell 201 is covered on the lower shell 202 to form a wrapping cavity with two openings, and the outer contour of the wrapping cavity generally presents a square shape. In some embodiments of the present application, the lower housing 202 includes a main board and two side plates located on both sides of the main board and perpendicular to the main board; the upper housing 201 includes a cover plate that covers the upper housing 201 Two side plates to form a wrapping cavity; the upper housing 201 may also include two side walls located on both sides of the cover plate and perpendicular to the cover plate. The two side walls are combined with the two side plates to achieve The upper housing 201 is covered on the lower housing 202.

两个开口具体可以是在同一方向的两端开口(204、205)，也可以是在不同方向上的两处开口；其中一个开口为电口204，电路板300的金手指从电口204伸出，***光网络单元等上位机中，另一个开口为光口205，用于外部光纤接入以连接光模块200内部的光收发器件，电路板203、光收发器件等光电器件位于包裹腔体中。The two openings can be two openings (204, 205) in the same direction, or two openings in different directions; one of the openings is the electrical port 204, and the golden finger of the circuit board 300 extends from the electrical port 204 The other opening is the optical port 205, which is used for external optical fiber access to connect the optical transceiver device inside the optical module 200. The circuit board 203, optical transceiver device and other optoelectronic devices are located in the package cavity. in.

采用上壳体201、下壳体202结合的装配方式，便于将电路板300等器件安装到壳体中，由上壳体201、下壳体202形成光模块最外层的封装保护壳体。上壳体201及下壳体202一般采用金属材料，利于实现电磁屏蔽以及散热；一般不会将光模块200的壳体做成一体结构，这样在装配电路板等器件时，定位部件、散热以及电磁屏蔽结构无法安装，也不利于生产自动化。The upper housing 201 and the lower housing 202 are combined to facilitate the installation of components such as the circuit board 300 into the housing. The upper housing 201 and the lower housing 202 form the outermost package protection housing of the optical module. The upper housing 201 and the lower housing 202 are generally made of metal materials, which is conducive to electromagnetic shielding and heat dissipation; generally, the housing of the optical module 200 is not made into an integrated structure, so that when assembling circuit boards and other devices, positioning components, heat dissipation, and The electromagnetic shielding structure cannot be installed, and it is not conducive to production automation.

解锁部件203位于包裹腔体/下壳体202的外壁，用于实现光模块与上位机之间的固定连接，或解除光模块与上位机之间的固定连接。The unlocking component 203 is located on the outer wall of the wrapping cavity/lower casing 202, and is used to realize a fixed connection between the optical module and the upper computer, or to release the fixed connection between the optical module and the upper computer.

解锁部件203具有与上位机笼子匹配的卡合结构；拉动解锁部件203的末端可以在使解锁部件203在外壁的表面相对移动；光模块***上位机的笼子里，由解锁部件203的卡合结构将光模块固定在上位机的笼子里；通过拉动解锁部件203，解锁部件203的卡合结构随之移动，进而改变卡合结构与上位机的连接关系，以解除光模块与上位机的卡合关系，从而可以将光模块从上位机的笼子里抽出。The unlocking component 203 has an engaging structure that matches the cage of the upper computer; pulling the end of the unlocking component 203 can make the unlocking component 203 move relative to the surface of the outer wall; the optical module is inserted into the cage of the upper computer, and the locking structure of the unlocking component 203 Fix the optical module in the cage of the host computer; by pulling the unlocking part 203, the locking structure of the unlocking part 203 will move accordingly, and then the connection relationship between the locking structure and the host computer will be changed to release the optical module from the host computer. Therefore, the optical module can be withdrawn from the cage of the host computer.

电路板300上设置有光发射芯片、光发射芯片的驱动芯片、光接收芯片、跨阻放大芯片、限幅放大芯片及微处理器芯片等，其中光发射芯片与光接收芯片直接贴装在光模块的电路板上，此种形态业内称为COB封装。The circuit board 300 is provided with a light emitting chip, a driving chip of the light emitting chip, a light receiving chip, a transimpedance amplification chip, a limiting amplification chip, a microprocessor chip, etc., wherein the light emitting chip and the light receiving chip are directly mounted on the light On the circuit board of the module, this form is called COB package in the industry.

电路板300通过电路走线将光模块中的用电器件按照电路设计连接在一起，以实现供电、电信号传输及接地等电功能；同时电路板300还有承载的各器件的功能，如电路板承载透镜组件400。The circuit board 300 connects the electrical components in the optical module according to the circuit design through circuit wiring to achieve electrical functions such as power supply, electrical signal transmission, and grounding; at the same time, the circuit board 300 also has the functions of the various components carried, such as circuits The board carries the lens assembly 400.

电路板一般为硬性电路板，硬性电路板由于其相对坚硬的材质，还可以实现承载作用，如硬性电路板可以平稳的承载芯片；硬性电路板还可以***上位机笼子中的电连接器中，具体地，在硬性电路板的一侧末端表面形成金属引脚/金手指，用于与电连接器连接。The circuit board is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also realize the bearing function. For example, the rigid circuit board can carry the chip smoothly; the rigid circuit board can also be inserted into the electrical connector in the cage of the host computer. Specifically, a metal pin/gold finger is formed on the surface of one end of the rigid circuit board for connection with the electrical connector.

附图5为本公开实施例提供的一种电路板300的结构示意图。如附图5所示，电路板300上设置透镜组件400以及光发射器、激光驱动芯片、光接收器、限幅放大芯片、光探测器(被透镜组件400遮挡未标出)。透镜组件400采用罩设式的方式设置在光芯片的上方，透镜组件400与电路板300形成包裹光发射器、光接收器等光芯片的腔体。透镜组件400通常为塑料器件，用于传输光束并在传输过程中改变光束传输方向。在本申请的某些实施例中，光发射器发出的光经透镜组件反射后进入光纤中，来自光纤的光经透镜组件反射后进入光接收器中，透镜组件不仅起到密封光芯片的作用，同时也建立了光芯片与光纤之间的光连接。FIG. 5 is a schematic structural diagram of a circuit board 300 provided by an embodiment of the disclosure. As shown in FIG. 5, the circuit board 300 is provided with a lens assembly 400, a light emitter, a laser driving chip, a light receiver, a limiting amplification chip, and a light detector (which are blocked by the lens assembly 400 and are not marked). The lens assembly 400 is arranged above the optical chip in a cover type manner, and the lens assembly 400 and the circuit board 300 form a cavity that wraps the optical chip such as the light emitter and the light receiver. The lens assembly 400 is usually a plastic device, which is used to transmit the light beam and change the direction of the light beam transmission during the transmission process. In some embodiments of the present application, the light emitted by the optical transmitter enters the optical fiber after being reflected by the lens assembly, and the light from the optical fiber enters the optical receiver after being reflected by the lens assembly. The lens assembly not only serves to seal the optical chip. At the same time, the optical connection between the optical chip and the optical fiber is also established.

高速率数据传输要求光芯片及其驱动/匹配芯片之间近距离设置，以缩短芯片之间的连线、减小连线造成的信号损失，而透镜组件400罩设在光芯片的上方，所以透镜组件400一般将光芯片及其驱动/匹配芯片同时罩设住。所以光发射器与光发射器的驱动芯片近距离设置，透镜组件400罩设光发射器与光发射器的驱动芯片；光接收器与跨阻放大芯片近距离设置，透镜组件400罩设光接收器与跨阻放大芯片。High-speed data transmission requires the optical chip and its driving/matching chip to be arranged close to each other to shorten the connection between the chips and reduce the signal loss caused by the connection. The lens assembly 400 is covered above the optical chip, so The lens assembly 400 generally covers the optical chip and its driving/matching chip at the same time. Therefore, the light emitter and the driving chip of the light emitter are arranged at a close distance, the lens assembly 400 covers the light emitter and the driving chip of the light emitter; the light receiver and the transimpedance magnifying chip are arranged at a close distance, and the lens assembly 400 covers the light receiver. And transimpedance amplifying chip.

在本公开实施例中，透镜组件400上连接设置有光纤带500，通过光纤带500输出和输入光束。光纤带500中包括若干根光纤。在本申请的某些实施例中，光纤带500通过光纤支架600连接透镜组件400，光纤支架600用于支撑光纤带500并连接透镜组件400。在本申请的某些实施例中，光纤带500中的光纤被固定于光纤支架600内，光纤带500中的光纤的端面与光纤支架600的端面平齐。In the embodiment of the present disclosure, an optical fiber ribbon 500 is connected to the lens assembly 400, and a light beam is output and input through the optical fiber ribbon 500. The optical fiber ribbon 500 includes several optical fibers. In some embodiments of the present application, the optical fiber ribbon 500 is connected to the lens assembly 400 through an optical fiber holder 600, and the optical fiber holder 600 is used to support the optical fiber ribbon 500 and connect to the lens assembly 400. In some embodiments of the present application, the optical fibers in the optical fiber ribbon 500 are fixed in the optical fiber holder 600, and the end surface of the optical fibers in the optical fiber ribbon 500 is flush with the end surface of the optical fiber holder 600.

附图6为本公开实施例提供的第一种透镜组件400的顶面图。如附图6所示，本公开实施例提供的透镜组件400上设置第一凹陷部401、第二凹陷部402和第三凹陷部403，第一凹陷部401和第二凹陷部402设置在透镜组件400的顶面且靠近中央的位置，第三凹陷部403设置在透镜组件400的侧面。FIG. 6 is a top view of the first lens assembly 400 provided by an embodiment of the disclosure. As shown in FIG. 6, the lens assembly 400 provided by the embodiment of the present disclosure is provided with a first recessed portion 401, a second recessed portion 402, and a third recessed portion 403, and the first recessed portion 401 and the second recessed portion 402 are provided on the lens. On the top surface of the assembly 400 and near the center, the third recess 403 is provided on the side surface of the lens assembly 400.

第一凹陷部401的底面形成第二斜面和第三斜面，且第一凹陷部401内倾斜放置反射镜404。反射镜404罩扣在第二斜面和第三斜面上，反射镜404与第二斜面和第三斜面形成空腔。第二凹陷部402的底面形成第一反射面4021。The bottom surface of the first recessed portion 401 forms a second inclined surface and a third inclined surface, and a mirror 404 is obliquely placed in the first recessed portion 401. The reflecting mirror 404 is buckled on the second inclined surface and the third inclined surface, and the reflecting mirror 404 forms a cavity with the second inclined surface and the third inclined surface. The bottom surface of the second recess 402 forms a first reflective surface 4021.

第三凹陷部403的端面上设置第三透镜矩阵4032。在本申请的某些实施例中，第三凹陷部403内形成第一端面4031，第一端面4031上设置有第三透镜矩阵4032。在本申请的某些实施例中，第一端面4031上直接形成第三透镜矩阵4032。在本公开实施例中，第三透镜矩阵4032由若干透镜规则排列形成，用于将从平行光束聚焦或将发散光束转换为平行光束。A third lens matrix 4032 is provided on the end surface of the third recess 403. In some embodiments of the present application, a first end surface 4031 is formed in the third recess 403, and a third lens matrix 4032 is provided on the first end surface 4031. In some embodiments of the present application, the third lens matrix 4032 is directly formed on the first end surface 4031. In the embodiment of the present disclosure, the third lens matrix 4032 is formed by a regular arrangement of several lenses, and is used to focus parallel light beams or convert divergent light beams into parallel light beams.

在本公开实施例中，第三凹陷部403用于连接光纤带。在本申请的某些实施例中，光纤带中的每根光纤的端面对应的位于第三透镜矩阵4032中相应透镜的焦点处。通常光纤带成列的排布，因此第三透镜矩阵4032为包括一排透镜的透镜矩阵。当光束通过透镜组件400向光纤带传输时，经第三透镜矩阵4032中透镜聚焦入射至光纤；当通过光纤带传输的光束输入至透镜组件400时，发散光束经第三透镜矩阵4032中汇聚成平行光，转变为平行光的光束在透镜组件400内部传输。In the embodiment of the present disclosure, the third recess 403 is used to connect the optical fiber ribbon. In some embodiments of the present application, the end face of each optical fiber in the optical fiber ribbon is correspondingly located at the focal point of the corresponding lens in the third lens matrix 4032. Generally, the optical fiber ribbons are arranged in columns, so the third lens matrix 4032 is a lens matrix including a row of lenses. When the light beam is transmitted to the optical fiber ribbon through the lens assembly 400, the lens in the third lens matrix 4032 is focused and incident to the optical fiber; when the light beam transmitted through the optical fiber ribbon is input to the lens assembly 400, the divergent light beam is condensed into the optical fiber through the third lens matrix 4032. The parallel light, the light beam converted into the parallel light is transmitted inside the lens assembly 400.

附图7为本公开实施例提供的一种透镜组件400的底面图。如附图7所示，本公开实施例提供的透镜组件400的底面405上设置第一透镜矩阵4051和第二透镜矩阵4052。更在本申请的某些实施例中，第一凹陷部401在透镜组件400底面的投影区域覆盖第一透镜矩阵4051，第二凹陷部402在透镜组件400底面的投影区域覆盖第二透镜矩阵4052。在本申请的某些实施例中，底面405上直接形成第一透镜矩阵4051和第二透镜矩阵4052。FIG. 7 is a bottom view of a lens assembly 400 provided by an embodiment of the disclosure. As shown in FIG. 7, a first lens matrix 4051 and a second lens matrix 4052 are provided on the bottom surface 405 of the lens assembly 400 provided by the embodiment of the present disclosure. In some embodiments of the present application, the projection area of the first concave portion 401 on the bottom surface of the lens assembly 400 covers the first lens matrix 4051, and the projection area of the second concave portion 402 on the bottom surface of the lens assembly 400 covers the second lens matrix 4052. . In some embodiments of the present application, the first lens matrix 4051 and the second lens matrix 4052 are directly formed on the bottom surface 405.

在本公开实施例中，第一透镜矩阵4051和第二透镜矩阵4052均由若干透镜规则排列形成，用于将从平行光束聚焦或将发散光束转换为平行光束。在本申请的某些实施例中，第一透镜矩阵4051用于将光发射器发射的发散光束汇聚为平行光入射至透镜组件400内，第二透镜矩阵4052用于将透镜组件400传输至光接收器的光束聚焦。In the embodiment of the present disclosure, the first lens matrix 4051 and the second lens matrix 4052 are both formed by a regular arrangement of several lenses, which are used to focus parallel light beams or convert divergent light beams into parallel light beams. In some embodiments of the present application, the first lens matrix 4051 is used to converge the divergent light beams emitted by the light emitter into parallel light and enter the lens assembly 400, and the second lens matrix 4052 is used to transmit the lens assembly 400 to the light. The receiver's beam is focused.

在本公开实施例中，第一透镜矩阵4051中透镜的焦距与第二透镜矩阵4052中透镜的焦距可相同也可不同。在本申请的某些实施例中，当光发射器的发光面和光接收器的光接收面高度相同时，第一透镜矩阵4051中透镜的焦距与第二透镜矩阵4052中透镜的焦距相同；当光发射器的发光面和光接收器的光接收面高度不同时，第一透镜矩阵4051中透镜的焦距与第二透镜矩阵4052中透镜的焦距不同。如此，可实现根据光发射器的发光面和光接收器的光接收面高度情况选择第一透镜矩阵4051中透镜的焦距与第二透镜矩阵4052中透镜的焦距，方便光模块中各种类型发射器和接收器的选择。In the embodiment of the present disclosure, the focal lengths of the lenses in the first lens matrix 4051 and the focal lengths of the lenses in the second lens matrix 4052 may be the same or different. In some embodiments of the present application, when the light emitting surface of the light emitter and the light receiving surface of the light receiver have the same height, the focal length of the lens in the first lens matrix 4051 is the same as the focal length of the lens in the second lens matrix 4052; when When the light emitting surface of the light emitter and the light receiving surface of the light receiver have different heights, the focal lengths of the lenses in the first lens matrix 4051 are different from the focal lengths of the lenses in the second lens matrix 4052. In this way, the focal length of the lens in the first lens matrix 4051 and the focal length of the lens in the second lens matrix 4052 can be selected according to the height of the light emitting surface of the light emitter and the light receiving surface of the light receiver, which is convenient for various types of emitters in the optical module. And the choice of receiver.

在本申请的某些实施例中，如附图7所示，本公开实施例提供的透镜组件400的底面上还形成有第五斜面407，第五斜面407位于底面405的一侧。在本申请的某些实施例中，第五斜面407与底面405相交。当将透镜组件400固定在电路板300时，第五斜面407向电路板300倾斜。第五斜面407用于设置第四透镜矩阵。In some embodiments of the present application, as shown in FIG. 7, a fifth inclined surface 407 is further formed on the bottom surface of the lens assembly 400 provided in an embodiment of the present disclosure, and the fifth inclined surface 407 is located on one side of the bottom surface 405. In some embodiments of the present application, the fifth inclined surface 407 intersects the bottom surface 405. When the lens assembly 400 is fixed on the circuit board 300, the fifth inclined surface 407 is inclined toward the circuit board 300. The fifth inclined surface 407 is used for setting the fourth lens matrix.

附图8为本公开实施例提供的一种透镜组件400的端面图。结合附图7和8所示，第三凹陷部403中还形成有第二端面4033，第二端面4033与第一端面4031在第三凹陷部403上具有高度差，如此第一端面4031与第二端面4033之间形成凹槽，进而第三透镜矩阵4032位于该凹槽内。在具体使用中，光纤带中光纤的端面与第二端面4033平齐，经过第三透镜矩阵4032的光束在凹槽内传输让后进入光纤带中的光纤内。在本申请的某些实施例中，在将光纤带连接透镜组件400时，光纤支架的端面抵触接触第二端面4033。FIG. 8 is an end view of a lens assembly 400 provided by an embodiment of the disclosure. As shown in FIGS. 7 and 8, a second end surface 4033 is also formed in the third recessed portion 403. The second end surface 4033 and the first end surface 4031 have a height difference on the third recessed portion 403, so that the first end surface 4031 and the first end surface 4031 have a height difference. A groove is formed between the two end surfaces 4033, and the third lens matrix 4032 is located in the groove. In specific use, the end face of the optical fiber in the optical fiber ribbon is flush with the second end face 4033, and the light beam passing through the third lens matrix 4032 is transmitted in the groove and then enters the optical fiber in the optical fiber ribbon. In some embodiments of the present application, when the optical fiber ribbon is connected to the lens assembly 400, the end surface of the optical fiber holder abuts and contacts the second end surface 4033.

第三凹陷部403上设置有限位柱，限位柱用于固定连接光纤支架并辅助光纤支架找准安装固定位置。在本申请的某些实施例中，限位柱包括第一限位柱4034和第二限位柱4035，第一限位柱4034和第二限位柱4035设置在第三凹陷部403的端面上。在本申请的某些实施例中，第一限位柱4034和第二限位柱4035设置在第二端面4033上。在本申请的某些实施例中，第一限位柱4034和第二限位柱4035分别位于第二端面4033上靠近第一端面4031两端的位置，如第一限位柱4034位于第一端面4031的左端，第二限位柱4035位于第二限位柱4035的右端。进而，当光纤支架连接透镜组件400时，光纤支架卡合连接第一限位柱4034和第二限位柱4035。A limit post is arranged on the third recess 403, and the limit post is used to fixly connect the fiber holder and assist the fiber holder to locate the fixed position of the fiber holder. In some embodiments of the present application, the limit post includes a first limit post 4034 and a second limit post 4035, and the first limit post 4034 and the second limit post 4035 are disposed on the end surface of the third recess 403 on. In some embodiments of the present application, the first limit post 4034 and the second limit post 4035 are arranged on the second end surface 4033. In some embodiments of the present application, the first limit post 4034 and the second limit post 4035 are respectively located on the second end surface 4033 near the two ends of the first end surface 4031, for example, the first limit post 4034 is located on the first end surface. At the left end of 4031, the second limiting post 4035 is located at the right end of the second limiting post 4035. Furthermore, when the optical fiber holder is connected to the lens assembly 400, the optical fiber holder is snap-connected to the first limiting post 4034 and the second limiting post 4035.

第三凹陷部403的底面上包括第一台阶面4037，第一台阶面4037与第二端面4033相接，第一台阶面4037用于支撑光纤支架，并在光纤支架安装过程中具有导向作用。第一台阶面4037的两侧设置第一侧面和第二侧面。在本申请的某些实施例中，第一侧面和第二侧面垂直于第一台阶面4037。在光纤支架安装过程中，第一侧面和第二侧面可辅助限位，有助于提升第一台阶面4037的导向作用。The bottom surface of the third recess 403 includes a first step surface 4037, the first step surface 4037 is connected to the second end surface 4033, the first step surface 4037 is used to support the fiber holder and has a guiding effect during the installation of the fiber holder. A first side surface and a second side surface are provided on both sides of the first step surface 4037. In some embodiments of the present application, the first side surface and the second side surface are perpendicular to the first step surface 4037. During the installation process of the optical fiber holder, the first side surface and the second side surface can assist in positioning, which helps to enhance the guiding effect of the first step surface 4037.

第三凹陷部403的底面上还包括第二台阶面4036，第二台阶面4036与第一端面4031相接。第二台阶面4036与第一台阶面4037在垂直于第三凹陷部403方向上存在高度差，进而在光纤支架与透镜组件400连接时有助于提升光纤支架与第二端面4033的抵触接触面积，在一定程度上保证光线直接安装平稳性。The bottom surface of the third recess 403 further includes a second step surface 4036, and the second step surface 4036 is in contact with the first end surface 4031. There is a height difference between the second step surface 4036 and the first step surface 4037 in the direction perpendicular to the third recess 403, which helps to increase the contact area between the fiber holder and the second end surface 4033 when the fiber holder is connected to the lens assembly 400 , To a certain extent, to ensure the stability of the direct installation of the light.

在本申请的某些实施例中，在本公开实施例提供的透镜组件400上，第三凹陷部403侧边分别设置第一侧面4038和第二侧面4039，第一侧面4038和第二侧面4039在第三凹陷部403端面方向的长度小于第三凹陷部403端面方向长度。第一侧面4038和第二侧面4039均由第三凹陷部403外侧向第三凹陷部403的中心倾斜，如此第一侧面4038和第二侧面4039增加了第三凹陷部403顶面的开口面积，如此在不影响光纤支架安装牢固性的基础上更加方便光纤支架的安装。In some embodiments of the present application, on the lens assembly 400 provided by the embodiments of the present disclosure, the third concave portion 403 is provided with a first side surface 4038 and a second side surface 4039, respectively, and a first side surface 4038 and a second side surface 4039 are provided on the sides of the third recessed portion 403. The length in the end surface direction of the third recessed portion 403 is smaller than the length in the end surface direction of the third recessed portion 403. Both the first side surface 4038 and the second side surface 4039 are inclined from the outside of the third recessed portion 403 to the center of the third recessed portion 403, so the first side surface 4038 and the second side surface 4039 increase the opening area of the top surface of the third recessed portion 403, In this way, the installation of the optical fiber bracket is more convenient without affecting the installation firmness of the optical fiber bracket.

在本公开实施例中，第三透镜矩阵4032包括第一光纤透镜4032-1和第二光纤透镜4032-2。第一光纤透镜4032-1用于将光发射器发射的透过透镜组件400的平行光束聚焦传输至光纤带，第二光纤透镜4032-2用于将光纤带中传输的发散光束转换成平行光在透镜组件400中传输。在本申请的某些实施例中，第一光纤透镜4032-1和第二光纤透镜4032-2的焦距相同。In the embodiment of the present disclosure, the third lens matrix 4032 includes a first fiber lens 4032-1 and a second fiber lens 4032-2. The first fiber lens 4032-1 is used to focus and transmit the parallel light beam emitted by the light transmitter through the lens assembly 400 to the optical fiber ribbon, and the second fiber lens 4032-2 is used to convert the divergent light beam transmitted in the optical fiber ribbon into parallel light It is transmitted in the lens assembly 400. In some embodiments of the present application, the focal lengths of the first fiber lens 4032-1 and the second fiber lens 4032-2 are the same.

在本申请的某些实施例中，透镜组件400为透明塑料件，通常采用注塑工艺制作而成。第一凹陷部401、第二凹陷部402和第三凹陷部403可被看作透镜组件400经过加工形成的槽。In some embodiments of the present application, the lens assembly 400 is a transparent plastic part, which is usually manufactured by an injection molding process. The first recessed portion 401, the second recessed portion 402, and the third recessed portion 403 can be regarded as grooves formed by processing the lens assembly 400.

附图9为第一种透镜组件结构情况下光模块的局部剖视图一，附图10为第一种透镜组件结构情况下光模块的局部剖视图二，附图11为第一种透镜组件结构情况下光模块的局部剖视图三。如附图9-11所示，光发射器301和光接收器303位于透镜组件400的下方，透镜组件400罩设在光发射器301和光接收器303上。由如附图9-11所示，第一透镜矩阵4051位于光发射器301的上方，第二透镜矩阵4052位于光接收器303的上方。Fig. 9 is a partial cross-sectional view of the optical module under the first lens assembly structure, Fig. 10 is a partial cross-sectional view of the optical module under the first lens assembly structure, and Fig. 11 is a partial cross-sectional view of the optical module under the first lens assembly structure Partial cross-sectional view of the optical module III. As shown in FIGS. 9-11, the optical transmitter 301 and the optical receiver 303 are located under the lens assembly 400, and the lens assembly 400 is covered on the optical transmitter 301 and the optical receiver 303. As shown in FIGS. 9-11, the first lens matrix 4051 is located above the light transmitter 301, and the second lens matrix 4052 is located above the light receiver 303.

附图12为光模块在第一凹陷部401位置处的局部截面结构放大示意图。如附图12所示，第一凹陷部401底面的第二斜面4011和第三斜面4012为第一凹陷部401在透镜组件400底面方向下沉形成；反射镜404设置在第一凹陷部401内时，反射镜404罩扣在第二斜面4011和第三斜面4012上；第二斜面4011、第三斜面4012和反射镜404形成一个空腔。反射镜404为光学器件，用于反射入射至其的光束。通常反射镜404为透明塑料或玻璃平面镀覆反射膜制作而成。FIG. 12 is an enlarged schematic diagram of a partial cross-sectional structure of the optical module at the position of the first recess 401. As shown in FIG. 12, the second inclined surface 4011 and the third inclined surface 4012 of the bottom surface of the first concave portion 401 are formed by the first concave portion 401 sinking in the direction of the bottom surface of the lens assembly 400; the mirror 404 is arranged in the first concave portion 401 At this time, the reflecting mirror 404 is buckled on the second inclined surface 4011 and the third inclined surface 4012; the second inclined surface 4011, the third inclined surface 4012 and the reflecting mirror 404 form a cavity. The mirror 404 is an optical device for reflecting the light beam incident on it. Generally, the reflector 404 is made of a transparent plastic or glass plane coated with a reflective film.

在本公开实施例中在本申请的某些实施例中，第二斜面4011和第三斜面4012相接。如附图12所示，第一凹陷部401的底面还包括第一斜面4013，第一斜面4013用于承托支撑反射镜404。在本申请的某些实施例中，第一斜面4013位于第二斜面4011的端部，第一斜面4013固定支撑反射镜404的一端。在本申请的某些实施例中，第一凹陷部401的底面还包括第四斜面4014，第四斜面4014也用于承托支撑反射镜404。在本申请的某些实施例中，第四斜面4014位于第三斜面4012的端部，第四斜面4014固定支撑反射镜404 的另一端。如此，第一斜面4013和第四斜面4014用于共同支撑连接反射镜404，增加反射镜404的支撑牢固性。In the embodiments of the present disclosure, in some embodiments of the present application, the second inclined surface 4011 and the third inclined surface 4012 are connected. As shown in FIG. 12, the bottom surface of the first recess 401 further includes a first inclined surface 4013, and the first inclined surface 4013 is used to support and support the mirror 404. In some embodiments of the present application, the first inclined surface 4013 is located at the end of the second inclined surface 4011, and the first inclined surface 4013 fixedly supports one end of the reflector 404. In some embodiments of the present application, the bottom surface of the first recess 401 further includes a fourth inclined surface 4014, and the fourth inclined surface 4014 is also used to support and support the mirror 404. In some embodiments of the present application, the fourth inclined surface 4014 is located at an end of the third inclined surface 4012, and the fourth inclined surface 4014 fixedly supports the other end of the mirror 404. In this way, the first inclined surface 4013 and the fourth inclined surface 4014 are used to jointly support the connecting mirror 404 and increase the support firmness of the mirror 404.

如附图12所示，底面405在电路板300上的投影覆盖光发射器301，底面405上设置第一透镜矩阵4051。在本公开实施例中，第一透镜矩阵4051由若干透镜规则排列形成。在本申请的某些实施例中，第一透镜矩阵4051为包括一排透镜的透镜矩阵，第一透镜矩阵4051中透镜的光轴垂直于光发射器301的发光面。光发射器301发射的光束入射到第一透镜矩阵4051，第一透镜矩阵4051将光发射器301发射的发散光束汇聚转换为平行光束。在本申请的某些实施例中，底面405上直接形成第一透镜矩阵4051。在本申请的某些实施例中，当透镜组件400组装在电路板300上时，第一透镜矩阵4051中透镜的焦点位于光发射器301的发光面上。As shown in FIG. 12, the projection of the bottom surface 405 on the circuit board 300 covers the light emitter 301, and the first lens matrix 4051 is provided on the bottom surface 405. In the embodiment of the present disclosure, the first lens matrix 4051 is formed by a number of lenses arranged regularly. In some embodiments of the present application, the first lens matrix 4051 is a lens matrix including a row of lenses, and the optical axis of the lenses in the first lens matrix 4051 is perpendicular to the light emitting surface of the light emitter 301. The light beam emitted by the light emitter 301 is incident on the first lens matrix 4051, and the first lens matrix 4051 converges and converts the divergent light beams emitted by the light emitter 301 into parallel light beams. In some embodiments of the present application, the first lens matrix 4051 is directly formed on the bottom surface 405. In some embodiments of the present application, when the lens assembly 400 is assembled on the circuit board 300, the focal point of the lens in the first lens matrix 4051 is located on the light emitting surface of the light emitter 301.

如附图12所示，第五斜面407位于底面405的侧边，且第五斜面407与底面405相交。当将透镜组件400固定在电路板300时，第五斜面407朝向电路板300且朝向光探测器302，用于将传输至第五斜面407的光束折射传输至光探测器302。在本申请的某些实施例中，第五斜面407上设置第四透镜矩阵4071。在本公开实施例中，第四透镜矩阵4071由若干透镜规则排列形成。在本申请的某些实施例中，第四透镜矩阵4071为包括一排透镜的透镜矩阵，第四透镜矩阵4071中透镜的光轴通过光探测器302的光接收面。光发射器301发射的光束通过透镜组件400反射至第五斜面407，第四透镜矩阵4071将平行传输至第五斜面407的光束汇聚传输至光探测器302。As shown in FIG. 12, the fifth inclined surface 407 is located on the side of the bottom surface 405, and the fifth inclined surface 407 intersects the bottom surface 405. When the lens assembly 400 is fixed on the circuit board 300, the fifth inclined surface 407 faces the circuit board 300 and faces the photodetector 302 for refracting and transmitting the light beam transmitted to the fifth inclined surface 407 to the photodetector 302. In some embodiments of the present application, a fourth lens matrix 4071 is provided on the fifth inclined surface 407. In the embodiment of the present disclosure, the fourth lens matrix 4071 is formed by a number of lenses arranged regularly. In some embodiments of the present application, the fourth lens matrix 4071 is a lens matrix including a row of lenses, and the optical axis of the lenses in the fourth lens matrix 4071 passes through the light receiving surface of the photodetector 302. The light beam emitted by the light transmitter 301 is reflected by the lens assembly 400 to the fifth inclined surface 407, and the fourth lens matrix 4071 converges and transmits the light beam transmitted in parallel to the fifth inclined surface 407 to the photodetector 302.

光发射器301与电路板300上的供电电路及信号电路连接，根据该电信号发射光信号，实现光模块***号到光信号的转换。在本申请的某些实施例中，光发射器301贴装在电路板300上。在本公开实施例中，光发射器301可选光发射芯片，如激光器芯片。The optical transmitter 301 is connected to the power supply circuit and the signal circuit on the circuit board 300, and emits an optical signal according to the electrical signal to realize the conversion of the electrical signal to the optical signal in the optical module. In some embodiments of the present application, the light emitter 301 is mounted on the circuit board 300. In the embodiment of the present disclosure, the light emitter 301 may be a light emitting chip, such as a laser chip.

光探测器302与电路板300上的供电电路连接及信号电路连接，光探测器302的光接收面接收经透镜组件400反射的光发射器301发射的部分光信号，将接收到的该光信号转换为电信号并将该电信号传输至信号电路，用于监控的光发射器状态。具体通过检测其所接收光束的光功率参数，进而实现对光发射器301状态的监控。在本公开实施例中，光探测器302可选光电二极管芯片。The photodetector 302 is connected with the power supply circuit and the signal circuit on the circuit board 300. The light receiving surface of the photodetector 302 receives part of the optical signal emitted by the optical transmitter 301 reflected by the lens assembly 400, and will receive the optical signal. Convert it into an electrical signal and transmit the electrical signal to the signal circuit for monitoring the status of the optical transmitter. Specifically, the monitoring of the state of the optical transmitter 301 is realized by detecting the optical power parameters of the received light beam. In the embodiment of the present disclosure, the photodetector 302 may be a photodiode chip.

附图13为光发射器301发射光束的传输光路结构示意图。如附图13所示，光发射器301发射发散光束至第一透镜矩阵4051，第一透镜矩阵4051将发散光束转换为平行光束；平行光束在透镜组件400内部传输至第二斜面4011，传输至第二斜面4011的平行光束部分折射入第二斜面4011、第三斜面4012和反射镜404形成的空腔内，部分被第二斜面4011反射，即将第二斜面4011入射至其的该平行光束分为成了两路；折射入第二斜面4011、第三斜面4012和反射镜404形成的空腔内的光束传输至反射镜404，反射镜404反射该光束使其传输至第三斜面4012，经第三斜面4012折射后入射至透镜组件400内，然后传输至第一端面4031，第一端面4031上的第三透镜矩阵4032中的第一光纤透镜4032-1将传输至其的平行光折射汇聚传输至光纤带500；被第二斜面4011反射的光束传输至第五斜面407，第五斜面407上的第四透镜矩阵4071将传输至其的平行光汇聚传输至光探测器302的光接收面。FIG. 13 is a schematic diagram of the transmission optical path structure of the light beam emitted by the light transmitter 301. As shown in FIG. 13, the light emitter 301 emits a divergent light beam to the first lens matrix 4051, and the first lens matrix 4051 converts the divergent light beam into a parallel light beam; the parallel light beam is transmitted to the second inclined surface 4011 inside the lens assembly 400 and transmitted to The parallel beam of the second inclined surface 4011 is partially refracted into the cavity formed by the second inclined surface 4011, the third inclined surface 4012 and the mirror 404, and is partially reflected by the second inclined surface 4011, that is, the parallel light beam incident on the second inclined surface 4011 is divided. In order to form two paths; the light beam refracted into the cavity formed by the second inclined surface 4011, the third inclined surface 4012 and the reflecting mirror 404 is transmitted to the reflecting mirror 404, and the reflecting mirror 404 reflects the light beam and transmits it to the third inclined surface 4012. The third inclined surface 4012 is refracted and incident into the lens assembly 400, and then transmitted to the first end surface 4031. The first fiber lens 4032-1 in the third lens matrix 4032 on the first end surface 4031 refracts and converges the parallel light transmitted thereto. Transmitted to the optical fiber ribbon 500; the light beam reflected by the second inclined surface 4011 is transmitted to the fifth inclined surface 407, and the fourth lens matrix 4071 on the fifth inclined surface 407 converges and transmits the parallel light transmitted thereto to the light receiving surface of the photodetector 302 .

附图14为光模块在第二凹陷部402位置处的局部截面结构放大示意图。如附图14所示，透镜组件400在第二凹陷部402的底面位置形成第一反射面4021，第一反射面4021向底面405倾斜。第一反射面4021用于反射传输至其的光束。在本申请的某些实施例中，第一反射面4021上形成有反射膜。FIG. 14 is an enlarged schematic diagram of a partial cross-sectional structure of the optical module at the position of the second recess 402. As shown in FIG. 14, the lens assembly 400 forms a first reflective surface 4021 on the bottom surface of the second concave portion 402, and the first reflective surface 4021 is inclined to the bottom surface 405. The first reflective surface 4021 is used to reflect the light beam transmitted thereto. In some embodiments of the present application, a reflective film is formed on the first reflective surface 4021.

如附图14所示，底面405在电路板300上的投影覆盖光接收器303，底面405上还设置有第二透镜矩阵4052。在本公开实施例中，第二透镜矩阵4052由若干透镜规则排列形成。在本申请的某些实施例中，第二透镜矩阵4052为包括一排透镜的透镜矩阵，第二透镜矩阵4052中透镜的光轴垂直于光接收器303的光接收面。经第一反射面4021反射的光束入射到第二透镜矩阵4052，第二透镜矩阵4052将入射至其的平行光束汇聚入射至光接收器303的光接收面。在本申请的某些实施例中，底面405上直接形成第二透镜矩阵4052。在本申请的某些实施例中，当透镜组件400组装在电路板300上时，第二透镜矩阵4052中透镜的焦点位于光接收器303的光接收面上。As shown in FIG. 14, the projection of the bottom surface 405 on the circuit board 300 covers the light receiver 303, and a second lens matrix 4052 is also provided on the bottom surface 405. In the embodiment of the present disclosure, the second lens matrix 4052 is formed by a number of lenses arranged regularly. In some embodiments of the present application, the second lens matrix 4052 is a lens matrix including a row of lenses, and the optical axis of the lenses in the second lens matrix 4052 is perpendicular to the light receiving surface of the light receiver 303. The light beam reflected by the first reflection surface 4021 is incident on the second lens matrix 4052, and the second lens matrix 4052 converges the parallel light beams incident thereon to the light receiving surface of the light receiver 303. In some embodiments of the present application, the second lens matrix 4052 is directly formed on the bottom surface 405. In some embodiments of the present application, when the lens assembly 400 is assembled on the circuit board 300, the focal point of the lens in the second lens matrix 4052 is located on the light receiving surface of the light receiver 303.

附图15为光接收器303接收光束的传输光路结构示意图。如附图15所示，光纤带500输出的光束传输至第三透镜矩阵4032中的第二光纤透镜4032-2，光纤带500输出的光束为发散光，该发散光经过第二光纤透镜4032-2折射汇聚转换为平行光，平行光传输至第一反射面4021，第一反射面4021将该平行光进行反射，经第一反射面4021反射的光束传输至底面405，底面405上的第二透镜矩阵4052将传输至其的平行光折射汇聚传输至光接收器303的光接收面。FIG. 15 is a schematic diagram of the transmission optical path structure of the optical receiver 303 receiving the light beam. As shown in FIG. 15, the light beam output by the optical fiber ribbon 500 is transmitted to the second fiber lens 4032-2 in the third lens matrix 4032. The light beam output by the optical fiber ribbon 500 is divergent light, and the divergent light passes through the second fiber lens 4032. 2 Refraction converges and transforms into parallel light. The parallel light is transmitted to the first reflecting surface 4021. The first reflecting surface 4021 reflects the parallel light. The light beam reflected by the first reflecting surface 4021 is transmitted to the bottom surface 405. The lens matrix 4052 refracts and converges the parallel light transmitted thereto to the light receiving surface of the light receiver 303.

光接收器303与电路板300上的供电电路及信号电路连接，光接收器303用于接收来自光模块外部的光信号并产生电信号。当光接收器303的光接收面接收经光纤带500入射的光信号，将接收到的该光信号转换为电信号并通过信号电路将该电信号输出，实现光模块中光信号到电信号之间的转换。在本公开实施例中，光接收器303可选光接收芯片，如光电二极管芯片。The optical receiver 303 is connected to the power supply circuit and the signal circuit on the circuit board 300, and the optical receiver 303 is used to receive an optical signal from the outside of the optical module and generate an electrical signal. When the light receiving surface of the optical receiver 303 receives the optical signal incident through the optical fiber ribbon 500, the received optical signal is converted into an electrical signal and the electrical signal is output through the signal circuit, so as to realize the conversion from the optical signal to the electrical signal in the optical module. Conversion between. In the embodiment of the present disclosure, the light receiver 303 may be a light receiving chip, such as a photodiode chip.

附图16为本公开实施例提供的第一种透镜组件400的顶面图。如附图16所示，本公开实施例提供的透镜组件400上设置第一凹陷部401和第三凹陷部403，第一凹陷部401设置在透镜组件400的顶面靠近中央的位置，第三凹陷部403设置在透镜组件400的端部。FIG. 16 is a top view of the first lens assembly 400 provided by an embodiment of the disclosure. As shown in FIG. 16, the lens assembly 400 provided by the embodiment of the present disclosure is provided with a first recessed portion 401 and a third recessed portion 403. The first recessed portion 401 is provided on the top surface of the lens assembly 400 near the center. The recess 403 is provided at the end of the lens assembly 400.

第一凹陷部401的底面形成第二反射面4015。第三凹陷部403的端面上设置第三透镜矩阵4032。在本申请的某些实施例中，第三凹陷部403内形成第一端面4031，第一端面4031上设置有第三透镜矩阵4032。在本申请的某些实施例中，第一端面4031上直接形成第三透镜矩阵4032。在本公开实施例中，第三透镜矩阵4032由若干透镜规则排列形成，用于将从平行光束聚焦或将发散光束转换为平行光束。The bottom surface of the first recess 401 forms a second reflective surface 4015. A third lens matrix 4032 is provided on the end surface of the third recess 403. In some embodiments of the present application, a first end surface 4031 is formed in the third recess 403, and a third lens matrix 4032 is provided on the first end surface 4031. In some embodiments of the present application, the third lens matrix 4032 is directly formed on the first end surface 4031. In the embodiment of the present disclosure, the third lens matrix 4032 is formed by a regular arrangement of several lenses, and is used to focus parallel light beams or convert divergent light beams into parallel light beams.

附图17为本公开实施例提供的一种透镜组件400的底面图。如附图17所示，本公开实施例提供的透镜组件400的底面405。底面405位于第一凹陷部401和第二凹陷部402在透镜组件400底面的投影区域。底面405上设置第一透镜矩阵4051和第二透镜矩阵4052。第一凹陷部401在透镜组件400底面的投影覆盖第一透镜矩阵4051和第二透镜矩阵4052。FIG. 17 is a bottom view of a lens assembly 400 provided by an embodiment of the disclosure. As shown in FIG. 17, the bottom surface 405 of the lens assembly 400 provided by the embodiment of the present disclosure. The bottom surface 405 is located in the projection area of the first concave portion 401 and the second concave portion 402 on the bottom surface of the lens assembly 400. A first lens matrix 4051 and a second lens matrix 4052 are provided on the bottom surface 405. The projection of the first recess 401 on the bottom surface of the lens assembly 400 covers the first lens matrix 4051 and the second lens matrix 4052.

第一透镜矩阵4051和第二透镜矩阵4052均由若干透镜规则排列形成，用于将平行光束聚焦或将发散光束转换为平行光束。在本申请的某些实施例中，第一透镜矩阵4051中透镜用于将光发射器发射的光束有发散光转换为平行光，第二透镜矩阵4052用于将传输至其的平行光束聚焦至光接收器的光接收面。在本申请的某些实施例中，底面405上直接形成第一透镜矩阵4051和第二透镜矩阵4052。The first lens matrix 4051 and the second lens matrix 4052 are both formed by a regular arrangement of several lenses, which are used to focus parallel light beams or convert divergent light beams into parallel light beams. In some embodiments of the present application, the lenses in the first lens matrix 4051 are used to convert the divergent light beams emitted by the light emitter into parallel light, and the second lens matrix 4052 is used to focus the parallel light beams transmitted to it. The light receiving surface of the light receiver. In some embodiments of the present application, the first lens matrix 4051 and the second lens matrix 4052 are directly formed on the bottom surface 405.

本公开实施例提供的透镜组件400的端面图参见本公开实施例提供的第一种透镜组件的端面结构，在此不再赘述。For the end view of the lens assembly 400 provided in the embodiment of the present disclosure, please refer to the end structure of the first lens assembly provided in the embodiment of the present disclosure, which will not be repeated here.

在本申请的某些实施例中，本公开实施例提供的透镜组件400为透明塑料件，通常采用注塑工艺制作而成。第一凹陷部401和第三凹陷部403可被看作透镜组件400经过加工形成的槽。In some embodiments of the present application, the lens assembly 400 provided by the embodiments of the present disclosure is a transparent plastic part, which is usually manufactured by an injection molding process. The first concave portion 401 and the third concave portion 403 can be regarded as grooves formed by processing the lens assembly 400.

附图18为第二种透镜组件结构情况下光模块的局部剖视图一，附图19为第二种透镜组件结构情况下光模块的局部剖视图二，附图20为第二种透镜组件结构情况下光模块的局部剖视图三。如附图18-20所示，光发射器301和光接收器303位于透镜组件400的下方，透镜组件400罩设在光发射器301和光接收器303上。在本公开实施例中，光发射器301和光接收器303贴装在电路板300上。如附图18-20所示，底面405在电路板300上的投影覆盖光发射器301和光接收器303。底面405位于光发射器301和光接收器303的上方，第一透镜矩阵4051位于光发射器301的上方，第二透镜矩阵4052位于光接收器303的上方。Fig. 18 is a partial cross-sectional view of the optical module under the second lens assembly structure, Fig. 19 is a partial cross-sectional view of the optical module under the second lens assembly structure, and Fig. 20 is a partial cross-sectional view of the optical module under the second lens assembly structure. Partial cross-sectional view of the optical module III. As shown in FIGS. 18-20, the optical transmitter 301 and the optical receiver 303 are located under the lens assembly 400, and the lens assembly 400 is covered on the optical transmitter 301 and the optical receiver 303. In the embodiment of the present disclosure, the optical transmitter 301 and the optical receiver 303 are mounted on the circuit board 300. As shown in FIGS. 18-20, the projection of the bottom surface 405 on the circuit board 300 covers the light transmitter 301 and the light receiver 303. The bottom surface 405 is located above the light transmitter 301 and the light receiver 303, the first lens matrix 4051 is located above the light transmitter 301, and the second lens matrix 4052 is located above the light receiver 303.

附图21为光模块在光发射器301位置处的局部截面结构放大示意图。如附图21所示，第一凹陷部401底面的第二反射面4015为第一凹陷部401在透镜组件400底面方向下沉形成。第二反射面4015向第一端面4031方向倾斜，第二反射面4015在电路板300上的投影覆盖光发射器301，第二反射面4015在透镜组件400底面的投影覆盖第一透镜矩阵4051，第一透镜矩阵4051在电路板300上的投影覆盖光发射器301。第二反射面4015用于反射传输至其的光束，用于改变传输至其光束的传播方向。在本申请的某些实施例中，第二反射面4015上形成有反射膜，反射膜用于保证第二反射面4015的反射效率。FIG. 21 is an enlarged schematic diagram of a partial cross-sectional structure of the optical module at the position of the light emitter 301. As shown in FIG. 21, the second reflective surface 4015 of the bottom surface of the first recess 401 is formed by sinking the first recess 401 in the direction of the bottom surface of the lens assembly 400. The second reflective surface 4015 is inclined in the direction of the first end surface 4031, the projection of the second reflective surface 4015 on the circuit board 300 covers the light emitter 301, and the projection of the second reflective surface 4015 on the bottom surface of the lens assembly 400 covers the first lens matrix 4051, The projection of the first lens matrix 4051 on the circuit board 300 covers the light emitter 301. The second reflective surface 4015 is used for reflecting the light beam transmitted to it, and used for changing the propagation direction of the light beam transmitted to it. In some embodiments of the present application, a reflective film is formed on the second reflective surface 4015, and the reflective film is used to ensure the reflection efficiency of the second reflective surface 4015.

在本公开实施例中，第一透镜矩阵4051由若干透镜规则排列形成。在本申请的某些实施例中，第一透镜矩阵4051为包括一排透镜的透镜矩阵，第一透镜矩阵4051中透镜的光轴垂直于光发射器301的发光面。光发射器301发射的光束入射到第一透镜矩阵4051，第一透镜矩阵4051将光发射器301发射的发散光束汇聚转换为平行光束。在本申请的某些实施例中，底面405上直接形成第一透镜矩阵4051。In the embodiment of the present disclosure, the first lens matrix 4051 is formed by a number of lenses arranged regularly. In some embodiments of the present application, the first lens matrix 4051 is a lens matrix including a row of lenses, and the optical axis of the lenses in the first lens matrix 4051 is perpendicular to the light emitting surface of the light emitter 301. The light beam emitted by the light emitter 301 is incident on the first lens matrix 4051, and the first lens matrix 4051 converges and converts the divergent light beams emitted by the light emitter 301 into parallel light beams. In some embodiments of the present application, the first lens matrix 4051 is directly formed on the bottom surface 405.

光发射器301与电路板300上的供电电路及信号电路连接，根据该电信号发射携带数据的光束，实现光模块***号到光信号的转换。在本申请的某些实施例中，光发射器301贴装在电路板300上。在本公开实施例中，光发射器301可选激光器芯片。The optical transmitter 301 is connected to the power supply circuit and the signal circuit on the circuit board 300, and emits a light beam carrying data according to the electrical signal to realize the conversion of the electrical signal to the optical signal in the optical module. In some embodiments of the present application, the light emitter 301 is mounted on the circuit board 300. In the embodiment of the present disclosure, the optical transmitter 301 may be a laser chip.

附图22为光发射器301发射光束的传输光路结构示意图。如附图22所示，第一透镜矩阵4051中透镜的焦点位于光发射器301的发光面上，光发射器301发射发散光束至第一透镜矩阵4051，第一透镜矩阵4051将发散光束转换为平行光束；平行光束在透镜组件400内部传输至第二反射面4015，传输至第二反射面4015平行光束被第二反射面4015反射传输至第一端面4031，第一端面4031上的第三透镜矩阵4032中的第一光纤透镜4032-1将传输至其的平行光折射汇聚传输至光纤带500。FIG. 22 is a schematic diagram of the transmission optical path structure of the light beam emitted by the light transmitter 301. As shown in FIG. 22, the focal point of the lens in the first lens matrix 4051 is located on the light emitting surface of the light emitter 301, the light emitter 301 emits a divergent light beam to the first lens matrix 4051, and the first lens matrix 4051 converts the divergent light beam into Parallel beam; the parallel beam is transmitted to the second reflecting surface 4015 inside the lens assembly 400, and transmitted to the second reflecting surface 4015. The parallel beam is reflected by the second reflecting surface 4015 and transmitted to the first end surface 4031, the third lens on the first end surface 4031 The first fiber lens 4032-1 in the matrix 4032 refracts and converges the parallel light transmitted thereto to the fiber ribbon 500.

附图23为光模块在光接收器303位置处的局部截面结构放大示意图。如附图23所示，第二反射面4015在电路板300上的投影覆盖光接收器303，第二反射面4015在透镜组件400底面的投影覆盖第二透镜矩阵4052，第二透镜矩阵4052在电路板300上的投影覆盖光接收器303。FIG. 23 is an enlarged schematic diagram of a partial cross-sectional structure of the optical module at the position of the optical receiver 303. As shown in FIG. 23, the projection of the second reflective surface 4015 on the circuit board 300 covers the light receiver 303, and the projection of the second reflective surface 4015 on the bottom surface of the lens assembly 400 covers the second lens matrix 4052. The projection on the circuit board 300 covers the light receiver 303.

在本公开实施例中，第二透镜矩阵4052由若干透镜规则排列形成。在本申请的某些实施例中，第二透镜矩阵4052为包括一排透镜的透镜矩阵，第二透镜矩阵4052中透镜的光轴垂直于光接收器303的光接收面。经第二反射面4015反射的光束入射到第二透镜矩阵4052，第二透镜矩阵4052将入射至其的平行光束汇聚入射至光接收器303的光接收面。在本申请的某些实施例中，底面405上直接形成第二透镜矩阵4052。In the embodiment of the present disclosure, the second lens matrix 4052 is formed by a number of lenses arranged regularly. In some embodiments of the present application, the second lens matrix 4052 is a lens matrix including a row of lenses, and the optical axis of the lenses in the second lens matrix 4052 is perpendicular to the light receiving surface of the light receiver 303. The light beam reflected by the second reflection surface 4015 is incident on the second lens matrix 4052, and the second lens matrix 4052 converges the parallel light beams incident thereon to be incident on the light receiving surface of the light receiver 303. In some embodiments of the present application, the second lens matrix 4052 is directly formed on the bottom surface 405.

附图24为光接收器303接收光束的传输光路结构示意图。如附图24所示，光纤带500输出的光束传输至第三透镜矩阵4032中的第二光纤透镜4032-2，光纤带500输出的光束为发散光，该发散光经过第二光纤透镜4032-2折射汇聚转换为平行光，平行光传输至第一反射面4021，第二反射面4015将该平行光进行反射，经第二反射面4015反射的光束传输至底面405上的第二透镜矩阵4052将传输至其的平行光折射汇聚传输至光接收器303的光接收面。如附图24所示，当第二透镜矩阵4052中透镜的焦点位于光接收器303的光接收面上，传输至光接收器303光束被最大程度的接收。FIG. 24 is a schematic diagram of the structure of the transmission optical path of the optical receiver 303 receiving the light beam. As shown in FIG. 24, the light beam output by the optical fiber ribbon 500 is transmitted to the second fiber lens 4032-2 in the third lens matrix 4032. The light beam output by the optical fiber ribbon 500 is divergent light, and the divergent light passes through the second fiber lens 4032. 2 Refraction converges and transforms into parallel light, and the parallel light is transmitted to the first reflecting surface 4021, the second reflecting surface 4015 reflects the parallel light, and the light beam reflected by the second reflecting surface 4015 is transmitted to the second lens matrix 4052 on the bottom surface 405 The parallel light transmitted thereto is refracted and converged and transmitted to the light receiving surface of the light receiver 303. As shown in FIG. 24, when the focal point of the lens in the second lens matrix 4052 is located on the light receiving surface of the light receiver 303, the light beam transmitted to the light receiver 303 is received to the greatest extent.

光接收器303与电路板300上的供电电路及信号电路连接，光接收器303用于接收携带数据的光束(光信号)。当光接收器303的光接收面接收经光纤带500入射的光信号，将接收到的该光信号转换为电信号并通过信号电路将该电信号输出，实现光模块中光信号到电信号之间的转换。在本公开实施例中，光接收器303可选光电二极管芯片。The optical receiver 303 is connected to the power supply circuit and the signal circuit on the circuit board 300, and the optical receiver 303 is used to receive a light beam (optical signal) carrying data. When the light receiving surface of the optical receiver 303 receives the optical signal incident through the optical fiber ribbon 500, the received optical signal is converted into an electrical signal and the electrical signal is output through the signal circuit, so as to realize the conversion from the optical signal to the electrical signal in the optical module. Conversion between. In the embodiment of the present disclosure, the optical receiver 303 may be a photodiode chip.

附图25为光发射器发射光路原理图，附图26为光接收器接收光路原理图。如附图25和26所示，光纤带500中光纤端面位于第三透镜矩阵4032中透镜的焦点位置，第三透镜矩阵4032中透镜的焦距记为f _fiber，光发射器301位于第一透镜矩阵4051中透镜的焦点位置，第一透镜矩阵4051中透镜焦距记为f _TX，光纤位置处的光斑直径大小记为S ₀。如附图 25所示，在发射光路中光发射器301的发光直径尺寸S ₁，二者之间的关系为，S ₀/S ₁＝f _fiber/f _TX(1)。如附图26所示，在接收光路中，光接收器303位于第二透镜矩阵4052中透镜的焦点位置，第二透镜矩阵4052中透镜的焦距记为f _RX。当光纤带500的光纤中充满光，光纤位置处的光斑大小即为光纤的直径。假设光纤的直径为50μm，则光纤位置处的光斑与光接收器303处接收光的光斑S ₂之间的关系为，50/S ₂＝f _fiber/f _RX(2)。 FIG. 25 is a schematic diagram of the light emitting path of the optical transmitter, and FIG. 26 is a schematic diagram of the receiving light path of the optical receiver. As shown in Figures 25 and 26, the end face of the optical fiber in the optical fiber ribbon 500 is located at the focal position of the lens in the third lens matrix 4032. The focal length of the lens in the third lens matrix 4032 is denoted as f _fiber , and the light emitter 301 is located in the first lens matrix. The focal position of the lens in 4051, the focal length of the lens in the first lens matrix 4051 is denoted as f _TX , and the spot diameter at the position of the optical fiber is denoted as S ₀ . As shown in FIG. 25, the light-emitting diameter size S ₁ of the light transmitter 301 in the light emitting path is related to S ₀ /S ₁ =f _fiber /f _TX (1). As shown in FIG. 26, in the receiving light path, the light receiver 303 is located at the focal position of the lens in the second lens matrix 4052, and the focal length of the lens in the second lens matrix 4052 is denoted as f _RX . When the optical fiber of the optical fiber ribbon 500 is filled with light, the spot size at the position of the optical fiber is the diameter of the optical fiber. Assuming that the diameter of the optical fiber is 50 μm, the relationship between the spot at the position of the optical fiber and the spot S ₂ of the received light at the light receiver 303 is 50/S ₂ =f _fiber /f _RX (2).

当第一透镜矩阵4051与第二透镜矩阵4052在同一平面时，若光发射器301与光接收器303的高度相差很小，所以可以假设f _TX≈f _RX，此时由关系式(1)、(2)可得S ₀·S ₂＝1000，可知光纤位置处的光斑与光接收器303处接收光的光斑大小成反比例关系，相互制约，不可能同时达到光斑较小的目的，这样只能取一个折中的尺寸，使两个光斑都符合使用要求。假如在10G产品中，光接收器的有效接收光面积大，一般60μm左右，所以光接收器303处的接收光斑的可以适当的大一些，例如40μm左右即可；但是25G/100G产品中，光接收器303的有效接收光面积小，一般只有40μm左右，此时要求光接收器303处的接收的光斑要只有20μm左右。如果光斑尺寸较大，贴片工艺和光纤耦合的难度将会增大，而且效率会很低。 When the first lens matrix 4051 and the second lens matrix 4052 are on the same plane, if the height difference between the light transmitter 301 and the light receiver 303 is very small, it can be assumed that f _TX ≈f _RX , at this time, from the relation (1) , (2) It can be obtained that S ₀ ·S ₂ =1000. It can be seen that the light spot at the position of the fiber is inversely proportional to the size of the light spot received by the light receiver 303, which restricts each other. It is impossible to achieve the goal of smaller light spot at the same time. A compromised size can be used to make the two light spots meet the requirements of use. If in 10G products, the effective light receiving area of the optical receiver is large, generally about 60μm, so the receiving spot of the optical receiver 303 can be appropriately larger, for example, about 40μm; but in 25G/100G products, the light The effective light receiving area of the receiver 303 is small, generally only about 40 μm. At this time, it is required that the light spot received at the light receiver 303 is only about 20 μm. If the spot size is large, the difficulty of patching process and fiber coupling will increase, and the efficiency will be very low.

本公开提供的光模块中，为了有效解决S ₀与S ₂相互制约的问题，光发射器301与光接收器303具有不同的高度，设置第一透镜矩阵4051中透镜与第二透镜矩阵4052中透镜具有不同的焦距，通过控制第一透镜矩阵4051和第二透镜矩阵4052中透镜的焦距，实现对光发射器301的发光面与光接收器303的光接收面的高度补偿，这样即可以设计不同尺寸的f _TX、f _RX获得理想的S ₀、S ₂，也可以满足焦距相同情况下不同高度的光发射器和光接收器高度时使用，或者二者都可以兼容。 In the optical module provided by the present disclosure, in order to effectively solve _{the problem of mutual restriction of S 0} and S ₂ , the optical transmitter 301 and the optical receiver 303 have different heights, and the lenses in the first lens matrix 4051 and the second lens matrix 4052 are arranged The lenses have different focal lengths. By controlling the focal lengths of the lenses in the first lens matrix 4051 and the second lens matrix 4052, the height compensation of the light emitting surface of the light emitter 301 and the light receiving surface of the light receiver 303 can be realized, so that the design can be made Different sizes of f _TX and f _{RX can} obtain ideal S ₀ and S ₂ , and can also meet the requirements of different heights of optical transmitters and optical receivers under the same focal length, or both can be compatible.

以下给出本公开实施中第一透镜矩阵4051中透镜的焦距与第二透镜矩阵4052中透镜的焦距的计算：The following is the calculation of the focal length of the lenses in the first lens matrix 4051 and the focal length of the lenses in the second lens matrix 4052 in the implementation of the present disclosure:

首先确定f _fiber、f _TX的范围，光纤的数值孔径NA＝0.2，根据几何关系，2·f _fiber·NA≤D，即f _fiber≤0.625mm。同理，激光器的发散角θ＝13°，根据几何关系，2·f _TX·tanθ≤D，即f _TX≤0.541mm。其次，综合考虑光纤耦合效率、第一透镜矩阵中透镜与光发射器之间的距离关系以及光发射器的发光面与光接收器的光接收面之间的高度差，设计合理的S ₀、f _TX，代入关系式(1)可计算出f _fiber，保证f _TX与f _fiber在各自范围内。 First determine _{the range of f fiber} and f _TX , the numerical aperture of the fiber NA=0.2, according to the geometric relationship, 2·f _fiber ·NA≤D, that is, f _fiber ≤0.625mm. In the same way, the divergence angle of the laser θ=13°, according to the geometric relationship, 2·f _TX ·tanθ≤D, that is, f _TX ≤0.541mm. Secondly, considering the fiber coupling efficiency, the distance relationship between the lens and the light transmitter in the first lens matrix, and the height difference between the light emitting surface of the light transmitter and the light receiving surface of the light receiver, a reasonable design of S ₀ , f _TX , substituting the relational formula (1) to calculate f _fiber , ensuring that f _TX and f _{fiber are} within their respective ranges.

再将S ₂、f _fiber代入关系式(2)，即可求得f _RX。另外，由于光接收器要与pad位打线连接，打线的弧高为0.12mm，所以还要保证f _RX≥0.12mm，以免金线碰触到第二透镜矩阵中透镜表面，影响第二透镜矩阵中透镜的光学性能。 Then _{substituting S 2} and f _fiber into relation (2), f _RX can be obtained. In addition, since the optical receiver needs to be wired to the pad position, the arc height of the wiring is 0.12mm, so it is necessary to ensure that f _RX ≥0.12mm to prevent the gold wire from touching the lens surface in the second lens matrix and affecting the second lens matrix. The optical performance of the lenses in the lens matrix.

最后应说明的是：以上实施例仅用以说明本公开的技术方案，而非对其限制；尽管参照前述实施例对本公开进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本公开各实施例技术方案的精神和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

一种光模块，其特征在于，包括：An optical module, characterized in that it comprises:

电路板；Circuit board

光发射器，设置在所述电路板上，用于发射光信号；An optical transmitter, arranged on the circuit board, for emitting optical signals;

光探测器，设置在所述电路板上，用于接收所述光发射器发射的部分光信号；A photodetector, arranged on the circuit board, for receiving part of the optical signal emitted by the optical transmitter;

光接收器，设置在所述电路板上，用于接收来自光模块外部的光信号；An optical receiver, arranged on the circuit board, for receiving optical signals from outside the optical module;

透镜组件，罩设在所述光发射器、所述光探测器和所述光接收器上，改变信号光束的传播方向；A lens assembly, which is covered on the light transmitter, the light detector and the light receiver, and changes the propagation direction of the signal beam;

光纤带，用于连接所述透镜组件；An optical fiber ribbon for connecting the lens assembly;

其中，所述透镜组件的顶面包括第一凹陷部和第二凹陷部，所述透镜组件的底面设置第一透镜矩阵和第二透镜矩阵，所述透镜组件的侧面包括第三凹陷部；Wherein, the top surface of the lens assembly includes a first recessed portion and a second recessed portion, the bottom surface of the lens assembly is provided with a first lens matrix and a second lens matrix, and the side surface of the lens assembly includes a third recessed portion;

所述第二凹陷部的底面形成第一反射面，所述第一反射面用于反射来自光模块外部传播至所述第一反射面的光束；The bottom surface of the second recessed portion forms a first reflective surface, and the first reflective surface is used to reflect the light beam propagating from the outside of the optical module to the first reflective surface;

所述第一透镜矩阵用于汇聚所述光发射器发出的光束，所述第二透镜矩阵用于汇聚所述第一反射面反射的光束至所述光接收器；The first lens matrix is used to converge the light beam emitted by the light transmitter, and the second lens matrix is used to converge the light beam reflected by the first reflecting surface to the light receiver;

所述第一凹陷部的底面形成第一斜面、第二斜面和第三斜面，所述第一斜面上承托设置反射镜，所述第二斜面、所述第三斜面和所述反射镜之间形成空腔；所述第二斜面用于折射和反射来自所述第一透镜矩阵的光束，所述反射镜用于反射通过所述第二斜面折射的光束，所述第三斜面用于折射通过所述反射镜反射的光束；The bottom surface of the first recessed portion forms a first inclined surface, a second inclined surface, and a third inclined surface, the first inclined surface supports a reflecting mirror, and the second inclined surface, the third inclined surface and the reflecting mirror are The second inclined surface is used to refract and reflect the light beam from the first lens matrix, the reflector is used to reflect the light beam refracted by the second inclined surface, and the third inclined surface is used to refract The light beam reflected by the mirror;

所述第三凹陷部的端面上设置第三透镜矩阵，所述第三透镜矩阵用于将通过所述第三斜面折射的光束汇聚至所述光纤带以及将来自所述光纤带的光束汇聚传输至所述第一反射面。A third lens matrix is provided on the end surface of the third recessed portion, and the third lens matrix is used to converge the light beam refracted by the third inclined surface to the optical fiber ribbon and converge and transmit the light beam from the optical fiber ribbon To the first reflecting surface.
根据权利要求1所述的光模块，其特征在于，所述第一透镜矩阵中透镜的焦距和所述第二透镜矩阵中透镜的焦距相同，所述光发射器的发光面和所述光接收器的光接收面高度相同。The optical module according to claim 1, wherein the focal length of the lenses in the first lens matrix and the focal length of the lenses in the second lens matrix are the same, and the light emitting surface of the light emitter and the light receiving surface are the same. The height of the light receiving surface of the device is the same.
根据权利要求1所述的光模块，其特征在于，所述第一透镜矩阵中透镜的焦距和所述第二透镜矩阵中透镜的焦距不同，所述光发射器的发光面和所述光接收器的光接收面高度不同。The optical module according to claim 1, wherein the focal length of the lens in the first lens matrix is different from the focal length of the lens in the second lens matrix, and the light emitting surface of the light emitter and the light receiving surface are different from each other. The height of the light receiving surface of the device is different.
根据权利要求1所述的光模块，其特征在于，所述透镜组件的底面包括第五斜面，所述第五斜面上设置第四透镜矩阵，经所述第二斜面反射后光信号传输至所述第五斜面、然后经所述第四透镜矩阵汇聚至所述光探测器。The optical module according to claim 1, wherein the bottom surface of the lens assembly comprises a fifth inclined surface, and a fourth lens matrix is arranged on the fifth inclined surface, and the optical signal is transmitted to the all after being reflected by the second inclined surface. The fifth inclined surface is then converged to the photodetector through the fourth lens matrix.
根据权利要求1所述的光模块，其特征在于，所述第三凹陷部包括第一端面和第二端面，所述第二端面与所述第一端面具有高度差；The optical module according to claim 1, wherein the third recessed portion comprises a first end surface and a second end surface, and the second end surface has a height difference with the first end surface;

所述第三透镜矩阵设置在所述第一端面上，所述第二端面上设置第一限位柱和第二限位柱，所述第一限位柱位于所述第一端面的一端，所述第二限位柱位于所述第一端面的另一端。The third lens matrix is arranged on the first end surface, and a first limit post and a second limit post are arranged on the second end surface, and the first limit post is located at one end of the first end surface, The second limiting post is located at the other end of the first end surface.
根据权利要求5所述的光模块，其特征在于，所述光模块还包括光纤支架，所述光纤支架支撑所述光纤带，所述光纤支架卡接所述第一限位柱和所述第二限位柱，所述光纤带通过所述光纤支架连接所述透镜组件。The optical module according to claim 5, wherein the optical module further comprises an optical fiber holder, the optical fiber holder supports the optical fiber ribbon, and the optical fiber holder clamps the first limiting post and the second Two limiting posts, the optical fiber ribbon is connected to the lens assembly through the optical fiber holder.
根据权利要求1所述的光模块，其特征在于，所述第三透镜矩阵的焦点位于所述光纤带中光纤的端面。The optical module according to claim 1, wherein the focal point of the third lens matrix is located on the end face of the optical fiber in the optical fiber ribbon.
一种光模块，其特征在于，包括：An optical module, characterized in that it comprises:

电路板；Circuit board

光发射器，设置在所述电路板上，用于发射光信号；An optical transmitter, arranged on the circuit board, for emitting optical signals;

光接收器，设置在所述电路板上，用于接收来自光模块外部的光信号；An optical receiver, arranged on the circuit board, for receiving optical signals from outside the optical module;

透镜组件，罩设在所述光发射器和所述光接收器上，改变信号光束的传播方向；A lens assembly, which is covered on the light transmitter and the light receiver, and changes the propagation direction of the signal beam;

光纤带，用于连接所述透镜组件；An optical fiber ribbon for connecting the lens assembly;

其中，所述透镜组件的顶面包括第一凹陷部，所述透镜组件的底面设置第一透镜矩阵和第二透镜矩阵，所述透镜组件的侧面包括第三凹陷部；Wherein, the top surface of the lens assembly includes a first recessed portion, the bottom surface of the lens assembly is provided with a first lens matrix and a second lens matrix, and the side surface of the lens assembly includes a third recessed portion;

所述第一凹陷部的底面形成第二反射面，所述第二反射面用于反射来自光模块外部传播至所述第二反射面的光束以及来自所述光发射器传播至所述第二反射面的光束；The bottom surface of the first concave portion forms a second reflective surface, and the second reflective surface is used to reflect the light beam propagating from the outside of the optical module to the second reflective surface and from the light emitter propagating to the second reflective surface. The beam of the reflecting surface;

所述第一透镜矩阵用于汇聚所述光发射器发出的光束，所述第二透镜矩阵用于汇聚所述第二反射面反射的光束至所述光接收器；The first lens matrix is used to converge the light beams emitted by the light transmitter, and the second lens matrix is used to converge the light beams reflected by the second reflecting surface to the light receiver;

所述第三凹陷部的端面上设置第三透镜矩阵，所述第三透镜矩阵用于将通过所述第二反射面反射的光束汇聚至所述光纤带以及将来自所述光纤带的光束汇聚传输至所述第二反射面。A third lens matrix is provided on the end surface of the third recessed portion, and the third lens matrix is used to converge the light beam reflected by the second reflecting surface to the optical fiber ribbon and converge the light beam from the optical fiber ribbon To the second reflecting surface.
根据权利要求8所述的光模块，其特征在于，所述第一透镜矩阵中透镜的焦距和所述第二透镜矩阵中透镜的焦距相同，所述光发射器的发光面和所述光接收器的光接收面高度相同。The optical module according to claim 8, wherein the focal length of the lenses in the first lens matrix is the same as the focal length of the lenses in the second lens matrix, and the light emitting surface of the light emitter and the light receiving surface are the same. The height of the light receiving surface of the device is the same.
根据权利要求8所述的光模块，其特征在于，所述第一透镜矩阵中透镜的焦距和所述第二透镜矩阵中透镜的焦距不同，所述光发射器的发光面和所述光接收器的光接收面高度不同。The optical module according to claim 8, wherein the focal length of the lens in the first lens matrix is different from the focal length of the lens in the second lens matrix, and the light emitting surface of the light emitter and the light receiving surface are different from each other. The height of the light receiving surface of the device is different.