WO2020063514A1 - Module optique - Google Patents

Module optique Download PDF

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Publication number
WO2020063514A1
WO2020063514A1 PCT/CN2019/107219 CN2019107219W WO2020063514A1 WO 2020063514 A1 WO2020063514 A1 WO 2020063514A1 CN 2019107219 W CN2019107219 W CN 2019107219W WO 2020063514 A1 WO2020063514 A1 WO 2020063514A1
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WO
WIPO (PCT)
Prior art keywords
lens group
end component
light
module
transmitting
Prior art date
Application number
PCT/CN2019/107219
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English (en)
Chinese (zh)
Inventor
鲍赟
王安斌
谢崇进
Original Assignee
阿里巴巴集团控股有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201811623273.6A external-priority patent/CN110967793B/zh
Application filed by 阿里巴巴集团控股有限公司 filed Critical 阿里巴巴集团控股有限公司
Publication of WO2020063514A1 publication Critical patent/WO2020063514A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements

Definitions

  • the present application relates to the field of optical transmission, and in particular to an optical module.
  • optical modules send and receive optical signals through optical fibers.
  • the light-transmitting module is the core component of the optical path in the optical module. Its function is to couple the light emitted by the laser into the optical fiber, or receive the light emitted from the optical fiber into the photodetector.
  • QSFP DD 400G SR8 optical module integrates a 4-channel TX end (transmitting end) and a 4-channel RX end (receiving end).
  • each transmission channel of the optical module has only one function, either for sending the light emitted by the laser into the optical fiber, or for receiving the light emitted from the optical fiber into the photodetector.
  • This application provides an optical module to solve the problem that each transmission channel of an existing optical module has only one function of sending or receiving optical signals.
  • the present application provides an optical module, including: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;
  • the receiving end component and the transmitting end component are disposed on the circuit board;
  • the light-transmitting module includes a first lens group, a second lens group, a light path conversion structure, and a housing fixedly assembled with the aforementioned components;
  • the coupling lenses of the first lens group are respectively aligned with the optical fibers connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal from the optical fiber;
  • the second lens group is disposed on the transparent main module side facing the circuit board, and is aligned with the receiving end component or the transmitting end component;
  • the light path conversion structure includes at least a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light passing through the first lens group. After transmitting to the filter surface and transmitting, reflecting on the reflecting surface to the second lens group, or after reflecting on the reflecting surface, the light from the second lens group enters the filtering surface and is transmitted to the first lens group;
  • the light transmitting sub-module includes a third lens group disposed between the light transmitting main module and the circuit board, and the third lens group faces one side of the circuit board, and is connected to the transmitting end component or receiving end.
  • the components are aligned; the position of the light transmitting sub-module is such that the light reflected by the filter surface is transmitted to the third lens group, or the light transmitted by the third lens group is transmitted to the filter surface and then reflected by the filter surface. To the first lens group.
  • the third lens group is aligned with the receiving component; the second lens group is aligned with the transmitting component.
  • the second lens group is aligned with the receiving component; the third lens group is aligned with the transmitting component.
  • the receiving end component includes a first receiving end component and a second receiving end component; the second lens group is aligned with the first receiving end component; the third lens group is aligned with the second The receiver components are aligned.
  • the wavelengths of light received by the first receiving end component and the second receiving end component are different.
  • the transmitting end component includes a first transmitting end component and a second transmitting end component; the second lens group is aligned with the first transmitting end component; the third lens group is aligned with the second The transmitter components are aligned.
  • the wavelengths of light emitted by the first transmitting end component and the second transmitting end component are different.
  • the light transmitting sub-module is detachably disposed in the optical module.
  • the surface of the filter surface is a coating or a filter.
  • the light transmitting sub-module further includes a housing for fixing the third lens group.
  • the present application also provides an optical module, including: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;
  • the receiving end component and the transmitting end component are disposed on the circuit board;
  • the transparent sub-module is assembled with the transparent main module in a detachable manner, and when the transparent main module and the transparent sub-module are assembled together, the optical module works in two-way transmission and reception. Mode; when the light-transmitting sub-module is separated from the light-transmitting main module, the optical module works in a unidirectional transmission and reception mode.
  • This application also provides an optical module, including: a receiving end component, a transmitting end component, a transparent main module, and a circuit board;
  • the receiving end component and the transmitting end component are disposed on the circuit board;
  • the translucent main module includes a first lens group, a second lens group, a light path conversion structure, and a housing fixedly assembled with the aforementioned components;
  • the coupling lenses of the first lens group are respectively aligned with the optical fibers connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal from the optical fiber;
  • the second lens group is disposed on the transparent main module side facing the circuit board, and is aligned with the receiving end component or the transmitting end component;
  • the light path conversion structure includes at least a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light passing through the first lens group. After being transmitted to the filter surface and transmitted, the light is reflected by the reflective surface to the second lens group, or the light from the second lens group is reflected by the reflective surface and enters the filter surface and transmitted to the first lens group.
  • the present application provides an optical module.
  • a sub-body including a third lens group is provided below the main body; and a second photodetector array is provided on a PCB; the transmission channel has a function of transmitting and receiving optical signals, and solves the problem. This solves the problem that each transmission channel of the existing optical module has only one function of transmitting or receiving optical signals.
  • FIG. 1 is a schematic diagram of a transmission channel for sending light emitted by a laser to an optical fiber according to a third embodiment of the present application.
  • FIG. 2 is a schematic diagram of a transmission channel for receiving light emitted from an optical fiber into a photodetector according to a third embodiment of the present application.
  • FIG. 3 is a structural diagram of an optical module provided by the first embodiment of the present application.
  • FIG. 4 is a structural diagram of a sub-body of an optical module provided by the first embodiment of the present application.
  • FIG. 5 is a schematic diagram of a main body provided by the first embodiment of the present application.
  • FIG. 6 is a schematic diagram of an embedded daughter body provided by the first embodiment of the present application.
  • FIG. 7 is a cross-sectional view of a group of transmission channels provided for transmitting and receiving optical signals according to the first embodiment of the present application.
  • FIG. 8 is a schematic diagram of an optical path for transmitting an optical signal of an optical module including a light transmitting sub-module according to a first embodiment of the present application.
  • FIG. 9 is a schematic diagram of an optical path for receiving an optical signal of an optical module including a light transmitting sub-module according to a first embodiment of the present application.
  • FIG. 10 is a cross-sectional view of another set of transmission channels for transmitting and receiving optical signals provided by the first embodiment of the present application.
  • FIG. 11 is an assembly schematic diagram of an optical module provided by the first embodiment of the present application.
  • FIG. 12 is a schematic diagram of a specific implementation manner of an optical module according to a first embodiment of the present application.
  • the first embodiment of the present application provides an optical module, which is described in detail below with reference to FIGS. 3 to 11.
  • the optical module includes a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;
  • the receiving end assembly includes a first photodetector array 1-1
  • the transmitting end assembly includes a first laser array
  • the first photodetector array 1-1 and the first laser array 2-1 are disposed on a circuit board 5 on.
  • the transparent main module 3-1 includes a first lens group 3-1-1 and a second lens group 3-1-2, and a first lens group 3-1-1 is fixedly assembled. 1. A second lens group, a light path conversion structure, and a housing 3-1-3 in which the aforementioned components are fixedly assembled. The transparent sub-module 3-2 is disposed below the transparent main module 3-1.
  • the coupling lenses of the first lens group 3-1-1 are respectively aligned with the optical fiber 4-1 connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal in the optical fiber.
  • the second lens group is disposed on the transparent main module side facing the circuit board, and is aligned with the receiving end component and the transmitting end component, respectively: the third lens group 3-2-1 and the first The photodetector array 1-1 is aligned; the second lens group 3-1-2 is aligned with the first laser array 2-1.
  • the light path conversion structure includes a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light transmission through the first lens group After being transmitted to the filter surface, it is reflected to the second lens group via the reflection surface, or light reflected by the second lens group is reflected to the filter surface and enters the filter surface and transmitted to the first lens group.
  • the light path conversion structure is used to convert light passing through the first lens group to the third lens group, or to convert light passing through the second lens group to the first lens group.
  • the light transmitting sub-module 3-2 includes a third lens group 3-2-1, which is disposed between the light transmitting main module 3-1 and the circuit board, and the third lens group 3-2-1 faces One side of the circuit board is aligned with the receiving end component; the position of the light transmitting sub-module is such that the light reflected by the filter surface is transmitted to the third lens group.
  • the light transmitting sub-module further includes a housing for fixing the third lens group.
  • the light path conversion structure includes: a first filter surface 3-1-4 and a first reflection surface 3-1-5; the filter surface is disposed obliquely and is located above the third lens group 3-2-1; The reflection surface 3-1-5 is located above the second lens group 3-1-2.
  • the light path conversion structure is used to convert the light passing through the first lens group to a third lens group, and includes: the filter surface reflects an optical signal derived from the coupling lens of the first lens group to the third lens group.
  • the direction of the light-colored arrow indicates the route where the light emitted by the optical fiber 4-1 is coupled to the first photodetector array 1-1, and the light emitted by the optical fiber 4-1 reaches the first lens group 3-1-1 first. And then reaches the first filter surface 3-1-4, and the light reflected by the first filter surface 3-1-4 is coupled to the first through the mirror surface of the third lens group 3-2-1 of the daughter body.
  • Photodetector array 1-1 As shown in FIG. 7, the direction of the light-colored arrow indicates the route where the light emitted by the optical fiber 4-1 is coupled to the first photodetector array 1-1, and the light emitted by the optical fiber 4-1 reaches the first lens group 3-1-1 first. And then reaches the first filter surface 3-1-4, and the light reflected by
  • the light path conversion structure is used to convert the light passing through the second lens group to the first lens group, and includes: the reflecting surface reflects the optical signal of the second lens group and transmits the light signal through the filtering surface to the first lens group.
  • the mirror surface of a lens group As shown in FIG. 7, the direction of the dark arrow indicates the route of the light from the first laser array 2-1 to the optical fiber, as follows: The light from the first laser array 2-1 passes through the second lens group to reach the first reflecting surface 3 -1-5, the first reflective surface 3-1-5 reflects the light to the first filter surface 3-1-4, and transmits the light to the first lens group 3--1 through the first filter surface 3-1-4
  • the mirror surface of 1-1 couples the transmitted light to the optical fiber 4-1 through the mirror surface.
  • the transmission channel is realized as a light receiving channel and a light transmitting channel at the same time.
  • the transmission channel where the optical fiber 4-1 is located can be used as a light receiving channel and a light transmitting channel at the same time, it can also be a light receiving channel at a certain moment, and a light transmitting channel at another moment.
  • the first filter surface 3-1-4 can be coated or coated with a filter. For example, if the second photodetector array uses a wavelength ⁇ _1 and the first laser array 2-1 uses a wavelength ⁇ _2, the first filter surface 3-1-4 can be plated with a corresponding film system so that the light at the wavelength ⁇ _1 is reflected and the wavelength ⁇ _2 The light is transmitted through.
  • the optical module includes: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;
  • the receiving end component includes a second photodetector array 1-2
  • the transmitting end component includes a second laser array 2-2
  • the second photodetector array 1-2 and the second laser array 2-2 are disposed in a circuit On the board 5.
  • the light transmitting module 3-1 includes a first lens group 3-1-2 and a second lens group 3-1.8, and a first lens group 3-1-2 and a second lens group 3-1-2 are fixedly assembled. 8 ⁇ ⁇ 3-1-3.
  • the transparent sub-module 3-2 is disposed below the transparent main module 3-1; the transparent sub-module 3-2 includes a third lens group 3-2-2.
  • the coupling lenses of the first lens group 3-1-2 are respectively aligned with the optical fiber 4-2 connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal in the optical fiber.
  • the second lens group 3-1-8 and the third lens group 3-2-2 are disposed on the light transmitting module side facing the circuit board, and are opposite to the receiving end component and the transmitting end component, respectively. Collimation: the third lens group 3-2-2 is aligned with the second laser array 2-2; the second lens group 3-1-2 is aligned with the second photodetector array 1-2.
  • the optical path conversion structure includes a filter surface and a reflective surface; the filter surface and the reflective surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the After the light of the lens group is transmitted to the filter surface and transmitted, it is reflected by the reflective surface to the second lens group, or the light of the second lens group is reflected by the reflective surface and enters the filter surface and transmitted to the first lens group.
  • the light path conversion structure is used to convert light passing through the first lens group to the second lens group, or to convert light passing through the third lens group to the first lens group.
  • the light transmitting sub-module 3-2 includes a third lens group 3-2-2, which is disposed between the light transmitting main module 3-1 and the circuit board, and the third lens group 3-2-2 faces One side of the circuit board is aligned with the transmitting end component; the position of the light transmitting sub-module is such that after the light from the third lens group is transmitted to the filter surface, it is reflected from the filter surface to the first lens group .
  • the light transmitting sub-module further includes a housing for fixing the third lens group.
  • the light path conversion structure includes: a second filtering surface 3-1-6 and a second reflecting surface 3-1-7; the second filtering surface is disposed obliquely and is located above the third lens group 3-2-2 The second reflecting surface 3-1-7 is located above the second lens group 3-1-8.
  • the light path conversion structure is used to convert light passing through the first lens group to a second lens group, and includes: a light signal derived from a coupling lens of the first lens group is transmitted through the filter surface to reach the reflection surface , Reaching the second lens group through the reflection surface.
  • the direction of the light-colored arrow indicates the route that the light emitted by the optical fiber 4-2 is coupled to the second photodetector array 1-2, as follows: the light emitted by the optical fiber 4-2 first reaches the first lens group 3-1-2 mirror surface, and then reaches the second filter surface 3-1-6, and the light transmitted through the second filter surface 3-1-6 is reflected by the second reflection surface 3-1.7 and reaches the first Two lens groups.
  • the second lens group couples light to the second photodetector array 1-2.
  • the light path conversion structure is used to convert the light passing through the third lens group to the first lens group, and includes: the light signal emitted by the transmitting end component is reflected by the filter surface and reaches the mirror surface of the first lens group.
  • the direction of the dark arrow indicates the route that the light emitted by the first laser array 2-1 reaches the optical fiber of the second fiber group 4-2, as follows:
  • the light emitted by the second laser array 2-2 passes through the third
  • the lens group 3-2-2 reaches the second filter surface 3-1-6, and reflects the light through the second filter surface 3-1-6 to the mirror surface of the first lens group 3-1-2, and the light is transmitted through the mirror surface Coupling to fiber 4-2.
  • the transmission channel is realized as a light receiving channel and a light transmitting channel at the same time.
  • the transmission channel where the optical fiber 4-2 is located can be used as a light receiving channel and a light transmitting channel at the same time, it can also be a light receiving channel at a certain moment, and a light transmitting channel at another moment.
  • the second filter surface 3-1-6 can be coated or attenuated. For example, if the second photodetector array 1-2 uses a wavelength ⁇ _1 and the second laser array 2-2 uses a wavelength ⁇ _2, the second filter surface 3-1-6 may be plated with a corresponding film system so that light of a wavelength ⁇ _1 passes through , ⁇ _2 light is reflected.
  • the above-mentioned light-transmitting sub-module is detachably disposed in the light module.
  • the light-transmitting sub-module and the light-transmitting main module may also be provided as a whole.
  • the first laser array 2-1 in Embodiment 1 can also be changed to a first transmitting end component, and the first photodetector array 1-1 can be changed to a second transmitting end component; the second lens The group is aligned with the first transmitting end component; the third lens group is aligned with the second transmitting end component. At this time, the wavelengths of light emitted by the first transmitting end component and the second transmitting end component are different.
  • the second photodetector array 1-2 in Embodiment 2 can also be changed to a first receiving end component, and the second laser array 2-2 can be changed to a second receiving end component; the second lens The group is aligned with the first receiving end component; the third lens group is aligned with the second receiving end component.
  • the wavelengths of light received by the first receiving end component and the second receiving end component are different.
  • the above two implementation manners realize that the fiber channel can be used as two sending channels or two receiving channels of different wavelengths at the same time.
  • Figures 8 and 9 are schematic diagrams of the optical path of an optical module including a transmissive sub-module.
  • the optical path in Figure 8 is that the light emitted by the laser array passes through the third lens group to reach the filter surface, and the light is reflected by the filter surface to the first lens group.
  • the mirror surface couples light to the optical fiber;
  • the optical path in Figure 9 is that the light emitted by the fiber first reaches the mirror surface of the first lens group, and then reaches the filter surface, and the light reflected by the filter surface passes through the mirror surface of the third lens group. Coupled to photodetector array.
  • the translucent sub-module 12-1-1 when it is not embedded, it can only send and receive optical signals with a wavelength of 850 nm. After embedding the translucent sub-module 12-1-1, Not only the transmission and reception of optical signals with a wavelength of 850nm, but also the transmission and reception of optical signals with a wavelength of 910nm.
  • the translucent sub-module 12-2-1 when the translucent sub-module 12-2-1 is not embedded, it can only send and receive optical signals with a wavelength of 910 nm. After embedding the translucent sub-module 12-2-1, Not only the transmission and reception of optical signals with a wavelength of 910nm, but also the transmission and reception of optical signals with a wavelength of 850nm.
  • the translucent sub-module 12-3-1 when the translucent sub-module 12-3-1 is not embedded, it can only send optical signals with a wavelength of 850 nm and 850 nm, and the translucent sub-module 12-3-1 is embedded. Later, the transmission and reception of optical signals with a wavelength of 910nm was increased.
  • the translucent sub-module 12-4-1 when the translucent sub-module 12-4-1 is not embedded, it can only send and receive optical signals with a wavelength of 910 nm. After embedding the translucent sub-module 12-4-1, Not only the transmission and reception of optical signals with a wavelength of 910nm, but also the transmission and reception of optical signals with a wavelength of 850nm.
  • the size of the main part of the optical module (Lens) is the same as the size of the conventional optical module (Lens).
  • the transmission channel is doubled and the transmission rate is doubled.
  • the original transmission of 200G can now transmit 400G.
  • a second embodiment of the present application provides an optical module including: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;
  • the receiving end component and the transmitting end component are disposed on the circuit board;
  • the transparent sub-module is assembled with the transparent main module in a detachable manner, and when the transparent main module and the transparent sub-module are assembled together, the optical module works in two-way transmission and reception. Mode; when the light-transmitting sub-module is separated from the light-transmitting main module, the optical module works in a unidirectional transmission and reception mode.
  • a third embodiment of the present application provides an optical module, including: a receiving end component, a transmitting end component, a transparent main module, and a circuit board;
  • the receiving end component and the transmitting end component are disposed on the circuit board;
  • the translucent main module includes a first lens group, a second lens group, a light path conversion structure, and a housing fixedly assembled with the aforementioned components;
  • the coupling lenses of the first lens group are respectively aligned with the optical fibers connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal from the optical fiber;
  • the second lens group is disposed on the transparent main module side facing the circuit board, and is aligned with the receiving end component or the transmitting end component;
  • the light path conversion structure includes at least a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light passing through the first lens group. After being transmitted to the filter surface and transmitted, the light is reflected by the reflective surface to the second lens group, or the light from the second lens group is reflected by the reflective surface and enters the filter surface and transmitted to the first lens group.
  • FIG. 1 provides a schematic diagram of transmitting light emitted by a laser to an optical fiber, which is implemented by using an optical module according to a third embodiment of the present application.
  • FIG. 2 provides a schematic diagram for receiving light emitted from an optical fiber into a photodetector, which is implemented by using an optical module according to a third embodiment of the present application.
  • a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.
  • processors CPUs
  • input / output interfaces output interfaces
  • network interfaces network interfaces
  • memory volatile and non-volatile memory
  • Memory may include non-persistent memory, random access memory (RAM), and / or non-volatile memory in computer-readable media, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • Computer-readable media includes both permanent and non-persistent, removable and non-removable media.
  • Information can be stored by any method or technology.
  • Information may be computer-readable instructions, data structures, modules of a program, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), and read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media may be used to store information that can be accessed by computing devices.
  • computer-readable media does not include non-transitory computer-readable media, such as modulated data signals and carrier waves.
  • this application may be provided as a method, a system, or a computer program product. Therefore, this application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

La présente invention concerne un module optique, comprenant un ensemble d'extrémité de réception, un ensemble d'extrémité d'émission, un module principal de transmission de lumière (3-1), un sous-module de transmission de lumière (3-2), et une carte de circuit imprimé. Le module principal de transmission de lumière (3-1) comprend un premier groupe de lentilles (3-1-1), un deuxième groupe de lentilles (3-1-2), une structure de conversion de trajet optique, et un boîtier (3-1-3) permettant d'assembler à demeure les composants ; la structure de conversion de trajet optique comprend au moins une surface de filtrage de lumière (3-1-4) et une surface réfléchissante (3-1-5) ; la surface de filtrage de lumière (3-1-4) et la surface réfléchissante (3-1-5) sont disposées dans des trajets optiques de transmission du premier groupe de lentilles (3-1-1) et du deuxième groupe de lentilles (3-1-2), et la lumière traversant le premier groupe de lentilles (3-1-1) est transmise à la surface de filtrage de lumière (3-1-4) puis est réfléchie dans le deuxième groupe de lentilles (3-1-2) par la surface réfléchissante (3-1-5), ou la lumière traversant le deuxième groupe de lentilles (3-1-2) est réfléchie par la surface réfléchissante (3-1-5) puis entre dans la surface de filtrage de lumière (3-1-4), et est transmise au premier groupe de lentilles (3-1-1) ; le sous-module de transmission de lumière (3-2) comprend un troisième groupe de lentilles (3-2-1), et le troisième groupe de lentilles (3-2-1) fait face à un côté de la carte de circuit imprimé et est aligné avec l'ensemble d'extrémité d'émission ou l'ensemble d'extrémité de réception ; une position définie du sous-module de transmission de lumière (3-2) satisfait le cas où la lumière réfléchie par la surface de filtrage de lumière (3-1-4) est transmise au troisième groupe de lentilles (3-2-1), ou la lumière traversant le troisième groupe de lentilles (3-2-1) est transmise à la surface de filtrage de lumière (3-1-4), puis est réfléchie vers le premier groupe de lentilles (3-1-1) par la surface de filtrage de lumière (3-1-4).
PCT/CN2019/107219 2018-09-30 2019-09-23 Module optique WO2020063514A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201811161230.0 2018-09-30
CN201811161230 2018-09-30
CN201811623273.6 2018-12-28
CN201811623273.6A CN110967793B (zh) 2018-09-30 2018-12-28 一种光模块

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