WO2021109645A1

WO2021109645A1 - Optical module

Info

Publication number: WO2021109645A1
Application number: PCT/CN2020/112738
Authority: WO
Inventors: 刘旭霞; 钟岩; 罗成双; 杨思更
Original assignee: 青岛海信宽带多媒体技术有限公司
Priority date: 2019-12-03
Filing date: 2020-08-31
Publication date: 2021-06-10

Abstract

An optical module (200), comprising: a circuit board (300), an optical transmitter (301), an optical detector (302), an optical receiver (303), a lens assembly (400), and an optical fibre strip (500); the optical fibre string (500) is connected to the lens assembly (400); a first recessed part (401) and a second recessed part (402) are arranged on the top surface of the lens assembly (400), the bottom surface of the lens assembly (400) comprises a first stepped surface (405) and a second stepped surface (406), and a third recessed part (403) is arranged on the side surface of the lens assembly (400); a first inclined surface (4013), a second inclined surface (4011), and a third inclined surface (4012) are formed on the bottom surface of the first recessed part (401), and a mirror (404) is obliquely arranged in the first recessed part (401), a cavity being formed between the mirror (404) and the first inclined surface (4011) and the third inclined surface (4012); a first reflective surface (4021) is formed on the bottom surface of the second recessed part (402); a third lens matrix (4032) is arranged on the end surface of the third recessed part (403); a first lens matrix (4051) is arranged on the first stepped surface (405), a second lens matrix (4061) is arranged on the second stepped surface (406), and there is a height difference between the first stepped surface (405) and the second stepped surface (406). The present invention facilitates achieving an optimal spot at the transmitting end optical fibre position and at the optical receiver (303) simultaneously.

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201911221071.3、发明名称为“一种光模块”，在2019年12月03日提交中国专利局、申请号为201922136581.2、实用新型名称为“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 requires that it be submitted to the Chinese Patent Office on December 03, 2019, with the application number of 201911221071.3, and the title of the invention as "a kind of optical module". It is required to be submitted to the China Patent Office on December 03, 2019 with the application number of 201922136581.2 and the name of the utility model It is the priority of "a kind of optical module", the entire content of which is incorporated in the present 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。COB(chip on board)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。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. In the COB (chip on board) package form of the 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 transmitter emits The optical signal is transmitted to the optical fiber after changing the direction through the lens assembly, 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，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；The embodiment of the present disclosure provides an optical module, including: a circuit board; an optical transmitter, which is arranged on the circuit board, and is used to emit light signals; an optical detector, which is arranged on the circuit board, and is used to receive a part emitted by the optical transmitter 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, optical detector and optical receiver to change the propagation direction of the signal beam;

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，透镜组件的底面包括第一台阶面和第二台阶面，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；第一台阶面上设置第一透镜矩阵，第一透镜矩阵用于汇聚光发射器发出的光束；第二台阶面上设置第二透镜矩阵，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；第一台阶面与第二台阶面之间存在高度差；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。Optical fiber ribbon for connecting lens components; wherein the top surface of the lens component includes a first concave portion and a second concave portion, the bottom surface of the lens component includes a first step surface and a second step surface, and the side surface of the lens component includes a third recess部; 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 step surface is provided with a first lens matrix, the first lens matrix Converging the light beam emitted by the light emitter; a second lens matrix is arranged on the second step surface, and the second lens matrix is used to converge the light beam reflected by the first reflecting surface to the light receiver; between the first step surface and the second step surface There is a height difference; 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 a cavity is formed between the second inclined surface, the third inclined surface and the reflecting mirror; The two inclined surfaces are used to refract and reflect the light beam from the first lens matrix, the mirror 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; the end surface of the third recessed part is provided with a first A three-lens matrix. The third lens matrix is used to converge the light beam refracted by the third inclined surface to the optical fiber ribbon and to converge and transmit the light beam from the optical fiber ribbon to the first reflecting 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为根据本公开一些实施例的光通信终端连接关系示意图；FIG. 1 is a schematic diagram of the connection relationship of optical communication terminals according to some embodiments of the present disclosure;

图2为根据本公开一些实施例的光网络单元结构示意图；2 is a schematic diagram of the structure of an optical network unit according to some embodiments of the present disclosure;

图3为根据本公开一些实施例的一种光模块的结构示意图；Fig. 3 is a schematic structural diagram of an optical module according to some embodiments of the present disclosure;

图4为根据本公开一些实施例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 according to some embodiments of the present disclosure;

图5为根据本公开一些实施例的电路板的结构图；Figure 5 is a structural diagram of a circuit board according to some embodiments of the present disclosure;

图6为根据本公开一些实施例的透镜组件的顶面图；Figure 6 is a top view of a lens assembly according to some embodiments of the present disclosure;

图7为根据本公开一些实施例的透镜组件的底面图；Figure 7 is a bottom view of a lens assembly according to some embodiments of the present disclosure;

图8为根据本公开一些实施例的透镜组件的端面图；Figure 8 is an end view of a lens assembly according to some embodiments of the present disclosure;

图9为根据本公开一些实施例的光模块的局部剖视图一；FIG. 9 is a partial cross-sectional view 1 of an optical module according to some embodiments of the present disclosure;

图10为根据本公开一些实施例的光模块的局部剖视图二；Fig. 10 is a partial cross-sectional view 2 of an optical module according to some embodiments of the present disclosure;

图11为根据本公开一些实施例的光模块的局部剖视图三；FIG. 11 is a third partial cross-sectional view of an optical module according to some embodiments of the present disclosure;

图12为根据本公开一些实施例的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 a position of a first recessed portion according to some embodiments of the present disclosure;

图13为根据本公开一些实施例的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 according to some embodiments of the present disclosure;

图14为根据本公开一些实施例的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 a position of a second recessed portion according to some embodiments of the present disclosure;

图15为根据本公开一些实施例的接收光束的传输光路结构示意图；15 is a schematic diagram of a structure of a transmission optical path of a received light beam according to some embodiments of the present disclosure;

图16为根据本公开一些实施例的光发射器发射光路原理图；Figure 16 is a schematic diagram of a light emitting path of a light transmitter according to some embodiments of the present disclosure;

图17为根据本公开一些实施例的光接收器接收光路原理图。Fig. 17 is a schematic diagram of a receiving optical path of an optical receiver according to some embodiments of the present 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为根据本公开一些实施例提供的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。Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal according to some embodiments of the present disclosure. 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为根据本公开一些实施例提供的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。Fig. 2 is a schematic structural diagram of an optical network unit provided according to some embodiments of the present disclosure. 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105上，电路板105上的电连接器包裹在笼子106中；光模块200***笼子106中，由笼子106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106，最终通过笼子106上的散热器107进行扩散。The cage 106 is located on the circuit board 105, and the electrical connector on the circuit board 105 is wrapped in the cage 106; the optical module 200 is inserted into the cage 106, and the optical module 200 is fixed by the cage 106, and the heat generated by the optical module 200 is conducted through the optical module housing Give the cage 106, and finally spread through the radiator 107 on the cage 106.

图3为根据本公开一些实施例的一种光模块200的结构示意图，图4为根据本公开一些实施例提供光模块200的分解结构示意图。如图3和图4所示，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。3 is a schematic structural diagram of an optical module 200 according to some embodiments of the present disclosure, and FIG. 4 is an exploded structural schematic diagram of an optical module 200 provided according to some embodiments of the present disclosure. As shown in FIGS. 3 and 4, the optical module 200 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。在本公开的某些实施例中，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 disclosure, the lower housing 202 includes a main board and two side plates located on both sides of the main board and arranged 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.

两个开口可以是在相反方向的两个开口，也可以是其他不同方向上的两处开口；图3中开口204和205为相反方向的两个开口，其中开口204为电口，电路板300的金手指从电口204伸出，***光网络单元等上位机中，开口205为光口，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 in opposite directions, or two openings in other different directions; the

openings

204 and 205 in FIG. 3 are two openings in opposite directions, where the opening 204 is an electrical port, and the circuit board 300 The golden finger of ”is extended from the electrical port 204 and inserted into the upper computer such as the optical network unit. The opening 205 is the optical port for external optical fiber access to connect the optical transceiver components inside the optical module 200, the circuit board 203, optical transceiver components, etc. The optoelectronic device is located in the package cavity.

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位于包裹腔体中下壳体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 lower housing 202 in the wrapping cavity, and is used to realize the 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 a locking structure that matches the cage of the upper computer; pulling the end of the unlocking component 203 can move the unlocking component 203 on 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 will The optical module is fixed in the cage of the host computer; by pulling the unlocking part 203, the locking structure of the unlocking part 203 moves accordingly, thereby changing the connection relationship between the locking structure and the host computer to release the locking relationship between the optical module and the host computer , So that 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为根据本公开一些实施例的一种电路板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。在本公开的某些实施例中，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 according to some embodiments of the present 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 disclosure, the light emitted by the light 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 functions 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.

在本公开的一些实施例中，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。在本公开的某些实施例中，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。在本公开的某些实施例中，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 some embodiments 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 disclosure, 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 disclosure, 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为本公开一些实施例提供的一种透镜组件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 a lens assembly 400 provided by some embodiments 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的底面包括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 includes 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。在本公开的某些实施例中，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。在本公开的某些实施例中，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 disclosure, 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 disclosure, 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。在本公开的某些实施例中，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 disclosure, 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的底面形成第一台阶面405和第二台阶面406。第一台阶面405位于第一凹陷部401在透镜组件400底面的投影区域，即第一凹陷部401在透镜组件400底面的投影覆盖第一台阶面405；第二台阶面406位于第二凹陷部402在透镜组件400底面的投影区域，即第二凹陷部402在透镜组件400底面的投影覆盖第二台阶面406。在本公开的某些实施例中，第一台阶面405和第二台阶面406分别平行于电路板300的表面。第一台阶面405、第二台阶面406存在高度差，即第一台阶面405和第二台阶面406形成一个台阶。在本公开的某些实施例中，第一台阶面405和第二台阶面406之间通过台阶过渡面408连接。台阶过渡面408可为垂直于第一台阶面405和第二台阶面406的面，也可为与第一台阶面405和第二台阶面406非垂直的面。FIG. 7 is a bottom view of a lens assembly 400 provided by an embodiment of the disclosure. As shown in FIG. 7, the bottom surface of the lens assembly 400 provided by the embodiment of the present disclosure forms a first step surface 405 and a second step surface 406. The first stepped surface 405 is located in the projection area of the first recessed portion 401 on the bottom surface of the lens assembly 400, that is, the projection of the first recessed portion 401 on the bottom surface of the lens assembly 400 covers the first stepped surface 405; the second stepped surface 406 is located in the second recessed portion The projection area of 402 on the bottom surface of the lens assembly 400, that is, the projection of the second recess 402 on the bottom surface of the lens assembly 400 covers the second step surface 406. In some embodiments of the present disclosure, the first step surface 405 and the second step surface 406 are respectively parallel to the surface of the circuit board 300. There is a height difference between the first step surface 405 and the second step surface 406, that is, the first step surface 405 and the second step surface 406 form a step. In some embodiments of the present disclosure, the first step surface 405 and the second step surface 406 are connected by a step transition surface 408. The step transition surface 408 may be a surface perpendicular to the first step surface 405 and the second step surface 406, or a surface that is not perpendicular to the first step surface 405 and the second step surface 406.

在本公开的某些实施例中，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的侧边。在本公开的某些实施例中，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 disclosure, as shown in FIG. 7, the bottom surface of the lens assembly 400 provided by the embodiments of the present disclosure is further formed with a fifth inclined surface 407, and the fifth inclined surface 407 is located on the side of the bottom surface 405. In some embodiments of the present disclosure, 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.

如附图7所示，第一台阶面405上设置第一透镜矩阵4051，第二台阶面406上设置第二透镜矩阵4061。在本公开的某些实施例中，第一台阶面405上直接形成第一透镜矩阵4051，第二台阶面406上直接形成第二透镜矩阵4061。第一透镜矩阵4051和第二透镜矩阵4061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4061中透镜的焦距可相同可不同。As shown in FIG. 7, a first lens matrix 4051 is provided on the first step surface 405, and a second lens matrix 4061 is provided on the second step surface 406. In some embodiments of the present disclosure, the first lens matrix 4051 is directly formed on the first step surface 405, and the second lens matrix 4061 is directly formed on the second step surface 406. The first lens matrix 4051 and the second lens matrix 4061 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 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 4061 may be the same or different.

在本公开的某些实施例中：若第一透镜矩阵4051中透镜的焦距与第二透镜矩阵4061中透镜的焦距相同，光发射器的发光面和光接收器的光接收面高度不同。可实现通过第一台阶面405和第二台阶面406之间的高度差补偿光发射器的发光面和光接收器的光接收面之间的高度差异。若第一透镜矩阵4051中透镜的焦距与第二透镜矩阵4061中透镜的焦距不同，光发射器的发光面和光接收器的光接收面高度相同或不同。如此可实现通过第一台阶面405和第二台阶面406之间的高度差补偿第一透镜矩阵4051中透镜的焦距与第二透镜矩阵4061中透镜的焦距的差异。如此，可便于实现光模块中各种类型发射器和接收器的选择。In some embodiments of the present disclosure, if the focal length of the lenses in the first lens matrix 4051 is the same as the focal length of the lenses in the second lens matrix 4061, the light emitting surface of the light emitter and the light receiving surface of the light receiver have different heights. The height difference between the light emitting surface of the light emitter and the light receiving surface of the light receiver can be compensated by the height difference between the first step surface 405 and the second step surface 406. If the focal length of the lenses in the first lens matrix 4051 is different from the focal length of the lenses in the second lens matrix 4061, the height of the light emitting surface of the light emitter and the light receiving surface of the light receiver are the same or different. In this way, the difference in the focal length of the lens in the first lens matrix 4051 and the focal length of the lens in the second lens matrix 4061 can be compensated by the height difference between the first step surface 405 and the second step surface 406. In this way, it is convenient to realize the selection of various types of transmitters and receivers in the optical module.

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后进入光纤带中的光纤内。在本公开的某些实施例中，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 enters the optical fiber in the optical fiber ribbon after being transmitted in the groove. In some embodiments of the present disclosure, 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。在本公开的某些实施例中，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。在本公开的某些实施例中，第一限位柱4034和第二限位柱4035设置在第二端面4033上。在本公开的某些实施例中，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 disclosure, 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 disclosure, the first limit post 4034 and the second limit post 4035 are disposed on the second end surface 4033. In some embodiments of the present disclosure, 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的底面上包括第四台阶面4037，第四台阶面4037与第二端面4033相接，第四台阶面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。第四台阶面4037的两侧设置第一侧面和第二侧面。在本公开的某些实施例中，第一侧面和第二侧面垂直于第四台阶面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，有助于提升第四台阶面4037的导向作用。The bottom surface of the third recess 403 includes a fourth step surface 4037, the fourth step surface 4037 is connected to the second end surface 4033, and the fourth 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 fourth step surface 4037. In some embodiments of the present disclosure, the first side surface and the second side surface are perpendicular to the fourth 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 fourth step surface 4037.

第三凹陷部403的底面上还包括第三台阶面4036，第三台阶面4036与第一端面4031相接。第三台阶面4036与第四台阶面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 third step surface 4036, and the third step surface 4036 is in contact with the first end surface 4031. There is a height difference between the third step surface 4036 and the fourth 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.

在本公开的某些实施例中，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 disclosure, 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。在本公开的某些实施例中，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 disclosure, the focal lengths of the first fiber lens 4032-1 and the second fiber lens 4032-2 are the same.

在本公开的某些实施例中，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 disclosure, 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为在本公开实施例提供光模块的局部剖视图一，附图10为在本公开实施例提供光模块的局部剖视图二，附图11为在本公开实施例提供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。如附图9-11所示，第一台阶面405位于光发射器301的上方，第二台阶面406位于光接收器303的上方，第一台阶面405和第二台阶面406之间存在高度差。Fig. 9 is a partial cross-sectional view 1 of an optical module provided in an embodiment of the present disclosure, Fig. 10 is a partial cross-sectional view 2 of an optical module provided in an embodiment of the present disclosure, and Fig. 11 is a partial cross-sectional view 3 of an optical module provided in an embodiment of the present disclosure . 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 step surface 405 is located above the light emitter 301, the second step surface 406 is located above the light receiver 303, and there is a height between the first step surface 405 and the second step surface 406. difference.

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。在本公开的某些实施例中，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。在本公开的某些实施例中，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。在本公开的某些实施例中，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 some embodiments of the present disclosure, the second inclined surface 4011 and the third inclined surface 4012 meet. 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 disclosure, 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 disclosure, 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 disclosure, 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，第一台阶面405在电路板300上的投影覆盖光发射器301，第一台阶面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。在本公开的某些实施例中，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。在本公开的某些实施例中，第一台阶面405上直接形成第一透镜矩阵4051。在本公开的某些实施例中，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 first step surface 405 on the circuit board 300 covers the light emitter 301, and the first lens matrix 4051 is provided on the first step 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 disclosure, 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 disclosure, the first lens matrix 4051 is directly formed on the first step surface 405. In some embodiments of the present disclosure, 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位于第一台阶面405的侧边，且第五斜面407与第一台阶面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。在本公开的某些实施例中，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。在本公开的某些实施例中，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 first stepped surface 405, and the fifth inclined surface 407 intersects the first stepped 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 disclosure, 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 disclosure, 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。在本公开的某些实施例中，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 disclosure, 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，另一部分被第二斜面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 slope 4011 is partially refracted into the cavity formed by the second slope 4011, the third slope 4012 and the mirror 404, and the other part is reflected by the second slope 4011, that is, the parallel beam incident on the second slope 4011 Divided into two paths; the light beam refracted into the cavity formed by the second inclined surface 4011, the third inclined surface 4012 and the mirror 404 is transmitted to the mirror 404, and the mirror 404 reflects the light beam and transmits it to the third inclined surface 4012, After being refracted by the third inclined surface 4012, it is 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 the parallel light transmitted thereto 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 to it to the light receiving of the photodetector 302 surface.

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向第二台阶面406倾斜。第一反射面4021用于反射传输至其的光束。在本公开的某些实施例中，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 second step surface 406. The first reflective surface 4021 is used to reflect the light beam transmitted thereto. In some embodiments of the present disclosure, a reflective film is formed on the first reflective surface 4021.

如附图14所示，第二台阶面406在电路板300上的投影覆盖光接收器303，第二台阶面406上设置第二透镜矩阵4061。在本公开实施例中，第二透镜矩阵4061由若干透镜规则排列形成。在本公开的某些实施例中，第二透镜矩阵4061为包括一排透镜的透镜矩阵，第二透镜矩阵4061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4061，第二透镜矩阵4061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。在本公开的某些实施例中，第二台阶面406上直接形成第二透镜矩阵4061。在本公开的某些实施例中，当透镜组件400组装在电路板300上时，第二透镜矩阵4061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 second step surface 406 on the circuit board 300 covers the light receiver 303, and a second lens matrix 4061 is provided on the second step surface 406. In the embodiment of the present disclosure, the second lens matrix 4061 is formed by a number of lenses arranged regularly. In some embodiments of the present disclosure, the second lens matrix 4061 is a lens matrix including a row of lenses, and the optical axis of the lenses in the second lens matrix 4061 is perpendicular to the light receiving surface of the light receiver 303. The light beam reflected by the first reflecting surface 4021 is incident on the second lens matrix 4061, and the second lens matrix 4061 converges the parallel light beams incident thereon to the light receiving surface of the light receiver 303. In some embodiments of the present disclosure, the second lens matrix 4061 is directly formed on the second step surface 406. In some embodiments of the present disclosure, when the lens assembly 400 is assembled on the circuit board 300, the focal point of the lens in the second lens matrix 4061 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反射的光束传输至第二台阶面406，第二台阶面406上的第二透镜矩阵4061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, and the first reflecting surface 4021 reflects the parallel light. The light beam reflected by the first reflecting surface 4021 is transmitted to the second step surface 406. The second lens matrix 4061 on the surface 406 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为光发射器发射光路原理图，附图17为光接收器接收光路原理图。如附图16和17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16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17所示，在接收光路中，光接收器303位于第二透镜矩阵4061中透镜的焦点位置，第二透镜矩阵4061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. 16 is a schematic diagram of the light emitting path of the optical transmitter, and FIG. 17 is a schematic diagram of the light receiving path of the optical receiver. As shown in Figures 16 and 17, 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. 16, the light-emitting diameter size S ₁ of the light emitter 301 in the light emitting path is related to S ₀ /S ₁ =f _fiber /f _TX (1). As shown in FIG. 17, in the receiving optical path, the light receiver 303 is located at the focal position of the lens in the second lens matrix 4061, and the focal length of the lens in the second lens matrix 4061 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).

假使第一透镜矩阵4051与第二透镜矩阵4061在同一平面，当光发射器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。 Assuming that the first lens matrix 4051 and the second lens matrix 4061 are on the same plane, when the height difference between the optical transmitter 301 and the optical receiver 303 is very small, it can be assumed that f _TX ≈f _RX , at this time, from the relationship (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 small light spot at the same time. A compromised size, so that both 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S0与S2相互制约的问题，在第一透镜矩阵4051所在第一台阶面406和第二透镜矩阵4061所在的第二台阶面406之间设置高度差，即第一台阶面405和第二台阶面406形成一个具有一定高度的台阶，以台阶的高度作为对第二透镜矩阵4061与光接收器之间距离的补偿，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 between S0 and S2, a height difference is provided between the first step surface 406 where the first lens matrix 4051 is located and the second step surface 406 where the second lens matrix 4061 is located. That is, the first step surface 405 and the second step surface 406 form a step with a certain height, and the height of the step is used as compensation for the distance between the second lens matrix 4061 and the light receiver, so that f _{TX of different sizes can be designed} , F _RX obtains ideal S ₀ and S ₂ , and can also meet the requirements of different heights of light emitters and light receivers under the same focal length, or both are compatible.

以下给出本公开实施中第一台阶面和第二台阶面之间高度差的计算：The calculation of the height difference between the first step surface and the second step surface in the implementation of the present disclosure is given below:

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以及第一透镜矩阵中透镜与光发射器之间的距离关系，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 and the distance relationship between the lens and the optical transmitter in the first lens matrix, design a reasonable S ₀ and f _TX , and substitute the relationship (1) to calculate f _fiber to ensure that f _TX and f _{The fiber is} 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。设第一透镜矩阵中透镜平面与光接收器之间垂直距离为H，那么第一台阶面和第二台阶面之间高度差的高度△h＝H-f _RX。 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. Assuming that the vertical distance between the lens plane and the light receiver in the first lens matrix is H, then the height of the height difference between the first step surface and the second step surface is Δh=Hf _RX .

因此本公开提供的光模块中，透镜组件400上第一台阶面405和第二台阶面406之间具有存在高度差，利用第一台阶面405和第二台阶面406之间高度差作为第一透镜矩阵4051到光发射器301发光面距离与第二透镜矩阵4061到光接收器303光接收面距离的补偿，避免第一透镜矩阵4051中透镜焦距与第二透镜矩阵4061中透镜焦距相互制约，便于实现发射端光纤带中光纤位置光斑与光接收器303处光斑同时达到最佳。Therefore, in the optical module provided by the present disclosure, there is a height difference between the first step surface 405 and the second step surface 406 on the lens assembly 400, and the height difference between the first step surface 405 and the second step surface 406 is used as the first step surface. The distance between the lens matrix 4051 and the light emitting surface of the light emitter 301 and the distance between the second lens matrix 4061 and the light receiving surface of the light receiver 303 are compensated to avoid the mutual restriction of the lens focal length in the first lens matrix 4051 and the lens focal length in the second lens matrix 4061, It is convenient to realize that the light spot of the optical fiber position in the fiber ribbon of the transmitting end and the light spot of the optical receiver 303 are optimized at the same time.

最后应说明的：以上实施例仅用以说明本公开的技术方案，而非对其限制；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；本质未脱离本公开各实施例技术方案的精神和范围。Finally, it should be noted: the above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit them; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or Some of the technical features are equivalently replaced; the essence does not 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包括第一台阶面和第二台阶面，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 includes a first stepped surface and a second stepped surface, 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;

所述第一台阶面上设置第一透镜矩阵，所述第一透镜矩阵用于汇聚所述光发射器发出的光束；所述第二台阶面上设置第二透镜矩阵，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；所述第一台阶面与所述第二台阶面之间存在高度差；A first lens matrix is arranged on the first stepped surface, and the first lens matrix is used to converge the light beam emitted by the light emitter; a second lens matrix is arranged on the second stepped surface, the second lens matrix For converging the light beams reflected by the first reflecting surface to the light receiver; there is a height difference between the first stepped surface and the second stepped surface;

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相同。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 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不同。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 different.
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束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, a fourth lens matrix is arranged on the fifth inclined surface, and the light beam is transmitted to the second inclined surface after being reflected by the second inclined surface. The fifth inclined surface then converges 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6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 6, 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6所述的光模块，其特征在于，所述第三凹陷部包括第三台阶面和第四台阶面，所述第三台阶面与所述第一端面相接，所述第四台阶面与所述第二端面相接，所述第四台阶面用于支撑所述光纤支架。The optical module according to claim 6, wherein the third recessed portion comprises a third step surface and a fourth step surface, the third step surface is in contact with the first end surface, and the fourth step surface is in contact with the first end surface. The step surface is connected to the second end surface, and the fourth step surface is used for supporting 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.
根据权利要求1所述的光模块，其特征在于，所述第三透镜矩阵包括第一光纤透镜和第二光纤透镜，所述第一光纤透镜和第二光纤透镜的焦距相同，所述第一光纤透镜将通过所述第三斜面折射的光束汇聚耦合至所述光纤带，所述第二光纤透镜来自所述光纤带的光束汇聚传输至所述第一反射面。The optical module according to claim 1, wherein the third lens matrix comprises a first fiber lens and a second fiber lens, the focal lengths of the first fiber lens and the second fiber lens are the same, and the first fiber lens The optical fiber lens converges and couples the light beam refracted by the third inclined surface to the optical fiber ribbon, and the second optical fiber lens converges and transmits the light beam from the optical fiber ribbon to the first reflecting surface.