CN213423536U - Optical assembly with backlight monitoring function and optical module - Google Patents
Optical assembly with backlight monitoring function and optical module Download PDFInfo
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- CN213423536U CN213423536U CN202021796408.1U CN202021796408U CN213423536U CN 213423536 U CN213423536 U CN 213423536U CN 202021796408 U CN202021796408 U CN 202021796408U CN 213423536 U CN213423536 U CN 213423536U
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Abstract
The utility model discloses a light assembly and optical module of control are shaded in area. The optical assembly with backlight monitoring comprises a lens base body and an optical transmission unit, wherein an optical interface is arranged on the lens base body and comprises a first optical interface arranged in a first area, and a second optical interface and a third optical interface disposed in the second region, the optical transmission unit including a VCSEL laser, a light detecting chip, an incident collimating lens, and a focusing lens, wherein the emitted light of the VCSEL laser passes through the incident collimating lens to form parallel light, parallel light is incided to the second region through the first optical interface in first region, and partial light passes through the second optical interface and incides to the optical detection chip, and partial light is incided to focusing lens through the reflection of third optical interface, forms the spotlight, the utility model provides a common area monitoring scheme light path is complicated in a poor light, and its monitoring subassembly that is shaded is various, problem such as with high costs.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to an optical assembly and an optical module with backlight monitoring.
Background
With the rapid growth of services such as internet, cloud computing, big data and the like, the large-scale construction of a data center with large capacity and high bandwidth is promoted, and the requirement on the efficiency of data transmission is higher and higher. In the field of optical communication, a Vertical Cavity Surface Emitting Laser (VCSEL) is adopted as a VCSEL Laser, so that high-bandwidth transmission is well realized.
In practical application, the VCSEL laser is in a non-airtight environment, the performance of the VCSEL laser is easily affected by the environment, especially the output optical power, and the output optical power needs to be monitored in order to ensure that the VCSEL laser is stable in working state in the using process. However, in the process of implementing the technical solution in the embodiment of the present application, the inventor of the present application finds that the prior art has at least the following technical problems:
in the prior art, an optical component with a backlight monitor has a complex optical path, needs to be coupled for many times, and has various backlight monitor components, high equipment processing difficulty and inconvenient operation.
Disclosure of Invention
The embodiment of the application provides an optical assembly and an optical module with backlight monitoring, can realize the function of backlight power monitoring, has simple optical path, is easy to realize, has low optical assembly cost, and solves the problems of complex optical assembly optical path, multiple coupling, various backlight monitoring assemblies, high equipment processing difficulty and inconvenient operation in the prior art.
The embodiment of the application provides an optical assembly with backlight monitoring, which comprises a lens base body and an optical transmission unit;
the lens base body is provided with optical interfaces, and the optical interfaces comprise a first optical interface arranged in the first area, and a second optical interface and a third optical interface arranged in the second area;
the optical transmission unit comprises a VCSEL laser, an optical detection chip, an incident collimating lens and a focusing lens;
the emitting light of the VCSEL laser forms parallel light through the incident collimating lens, the parallel light is incident to the second region through the first optical interface of the first region, part of the light is incident to the light detection chip through the second optical interface, and part of the light is reflected through the third optical interface and is incident to the focusing lens to form convergent light.
Further, the first optical interface and the second optical interface are all total reflection interfaces parallel to each other, and the length of the first optical interface is greater than that of the second optical interface.
Further, the first optical interface and the second optical interface are inclined at an angle of 45 ° with respect to the horizontal direction with the parallel light direction as the horizontal direction, and the third optical interface is a horizontally transmissive optical interface.
Furthermore, the incident collimating lens and the focusing lens are both arranged on the lens base body and are formed with the lens base body in a one-time injection molding mode.
Further, the optical assembly further comprises a carrier, and the VCSEL laser is disposed on the carrier.
Further, the carrier, the optical detection chip and the lens base body are passively mounted on the printed circuit board, and the optical detection chip is arranged right below the third optical interface of the lens base body.
Further, the focusing lens is an aspherical mirror.
Further, the first optical interface, the second optical interface and the third optical interface are all planes.
Further, the lens substrate, the incident collimating lens and the focusing lens are made of polyetherimide materials.
An optical module comprises a shell and the optical module, wherein the shell encapsulates the optical module.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the utility model provides an optical assembly with backlight monitoring, which enables the emitted light of a VCSEL laser to form parallel light through an incident collimating lens by arranging a first optical interface of a first area on a lens base body, and arranging a second optical interface and a third optical interface of a second area, wherein the parallel light is incident to the second area through the first optical interface of the first area, part of the light is incident to an optical detection chip through the second optical interface, and part of the light is reflected by the third optical interface and incident to a focusing lens to form converged light and then enters an optical fiber, thereby effectively solving the problems of complex optical path of the optical assembly, multiple coupling, numerous backlight monitoring assemblies, high processing difficulty of equipment and inconvenient operation in the prior art, further realizing the function of monitoring the backlight power by using a simple optical path and a packaging form, and being easy to realize, and the optical assembly has low cost.
Drawings
Fig. 1 is a schematic view of a backlight monitoring structure of an optical assembly with backlight monitoring according to an embodiment of the present disclosure.
Description of reference numerals: 1. a lens base body; 11. a first optical interface; 12. a second optical interface; 13. A third optical interface; 21. a VCSEL laser; 22. a light detection chip 23, an incident collimating lens; 24. a focusing lens; 3. a carrier; 4. a printed circuit board; 5. an optical fiber.
Detailed Description
The technical solutions in the embodiments of the present invention will be eliminated and fully described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless indicated otherwise.
The utility model provides a light assembly of control is shaded in area, through set up first optical interface on the lens base member, second optical interface and third optical interface, the light beam passes through second optical interface reflection entering optic fibre, go into the optical detection chip through the perpendicular transmission of third optical interface, realize the control is shaded, it is complicated effectively to have solved prior art light assembly light path, need through the coupling many times, the control assembly is shaded is numerous, the equipment processing degree of difficulty is high, inconvenient operation's problem, and then realized just can realizing the function of power control is shaded with simple light path and packaging form, easy realization, and light assembly is with low costs.
As shown in fig. 1, the present embodiment provides an optical module with backlight monitoring, including a lens base 1 and an optical transmission unit.
The lens base body 1 is provided with optical interfaces, the optical interfaces comprise a first optical interface 11 arranged in a first area, a second optical interface 12 and a third optical interface 13 arranged in a second area, and the optical transmission unit comprises a VCSEL laser 21, a light detection chip 22, an incidence collimating lens 23 and a focusing lens 24.
The emitted light of the VCSEL laser 21 forms parallel light through the incident collimating lens 23, the parallel light is incident to the second region through the first optical interface 11 of the first region, part of the light is incident to the optical detection chip 22 through the second optical interface 12 of the second region, and the light incident to the optical detection chip 22 is converted into an electrical signal, so that a circuit system can conveniently detect the state of the VCSEL laser 21, and the VCSEL laser has the advantages of good trial effect and good stability; part of the light is reflected by the third optical interface 13 and enters the focusing lens 24, forming a converging beam, and then enters the optical fiber 5.
The light component realizes the backlight monitoring function through the light path.
Further, the first optical interface 11 and the second optical interface 12 are both parallel total reflection interfaces, and totally reflect all the collimated laser beams transmitted in the optical assembly, and the length of the first optical interface 11 is greater than that of the second optical interface 12, so that a part of the collimated laser beams from the incident collimating lens 23 is transmitted into the light detecting chip 22 from the third optical interface 13, and another part of the collimated laser beams is reflected into the optical fiber from the second optical interface 12.
To further increase the backlight tolerance, the first optical interface 11 and the second optical interface 12 are inclined at an angle of 45 ° with respect to the horizontal direction, with the parallel light direction being the horizontal direction, and the third optical interface 13 is a horizontally transmissive optical interface.
Further, the incident collimating lens 23 and the focusing lens 24 are both disposed on the lens substrate 1 and are injection molded with the lens substrate 1 at one time. The integrated one-time injection molding has small processing difficulty, is convenient for processing stray light on each surface, can effectively eliminate the influence of stray light, improves the transmission quality of high-speed signals, does not need to additionally add a lens at a colleague realizing the backlight monitoring function, and is favorable for realizing a passive coupling packaging scheme.
Further, the optical assembly further comprises a carrier 3, the VCSEL laser 21 is disposed on the carrier 3, the carrier 3 is disposed on the printed circuit board, and the VCSEL laser 21 can be adhered to the carrier 3 by an adhesive to adjust the height of the VCSEL laser 21, so that light emitted by the VCSEL laser 21 can be accurately coupled with the incident collimating lens 23.
Further, the carrier 3, the optical detection chip 22 and the lens base 1 are passively mounted on the printed circuit board 4, the optical detection chip 22 is arranged right below the third optical interface of the lens base 1, and the passive mounting COB (chip on board) mode has the advantages of simple process, high reliability and high production consistency and repeatability.
Furthermore, in order to achieve high uniformity and uniformity of each optical path, the first optical interface 11, the second optical interface 12, and the third optical interface 13 are all set to be flat.
Furthermore, the lens substrate 1, the incident collimating lens 23 and the focusing lens 24 are made of polyetherimide materials, which is beneficial to processing and saves cost.
Further, in order to further ensure the collimation of the light beam and the converging effect of the light beam, the focusing lens 24 is an aspheric mirror.
An optical module comprises the optical assembly and a shell, wherein the shell is used for packaging the optical assembly, so that the optical module has a backlight monitoring function.
To sum up, the optical assembly with backlight monitoring provided by the present invention forms parallel light from the emitted light of the VCSEL laser through the incident collimating lens by disposing the first optical interface of the first region on the lens substrate, and disposing the second optical interface and the third optical interface of the second region, wherein the parallel light is incident to the second region through the first optical interface of the first region, part of the light is incident to the optical detection chip through the second optical interface, and part of the light is reflected by the third optical interface and incident to the focusing lens, and enters the optical fiber after forming the converging light, which effectively solves the problems of complex optical path of the optical assembly, multiple coupling, numerous backlight monitoring assemblies, high difficulty in processing equipment, and inconvenient operation in operation, and further realizes the function of monitoring the backlight power with simple optical path and packaging form, easy to realize, and the optical assembly is with low costs.
Claims (10)
1. An optical assembly with backlight monitoring, comprising a lens base and an optical transmission unit;
the lens base body is provided with optical interfaces, and the optical interfaces comprise a first optical interface arranged in the first area, and a second optical interface and a third optical interface arranged in the second area;
the optical transmission unit comprises a VCSEL laser, an optical detection chip, an incident collimating lens and a focusing lens;
the emitting light of the VCSEL laser forms parallel light through the incident collimating lens, the parallel light is incident to the second region through the first optical interface of the first region, part of the light is incident to the light detection chip through the second optical interface, and part of the light is reflected through the third optical interface and is incident to the focusing lens to form convergent light.
2. The optical assembly with backlight monitoring of claim 1, wherein the first optical interface and the second optical interface are all parallel total reflection interfaces, and the first optical interface length is greater than the second optical interface length.
3. The light assembly with backlight monitoring of claim 1, wherein the first optical interface and the second optical interface are tilted at an angle of 45 ° with respect to the horizontal direction with the parallel light direction as the horizontal direction, and the third optical interface is a horizontally transmissive optical interface.
4. The optical assembly with backlight monitoring of claim 1, wherein the entrance collimating lens and the focusing lens are disposed on the lens substrate and are injection molded with the lens substrate.
5. The optical package with backlight monitoring of claim 1, wherein the optical package further comprises a carrier, the VCSEL laser being disposed on the carrier.
6. The optical package with backlight monitoring of claim 5, wherein the carrier, the photo detector chip, and the lens body are passively mounted on a printed circuit board, the photo detector chip being disposed directly below the third optical interface of the lens body.
7. The optical assembly with backlight monitoring of any of claims 1-6, wherein the focusing lens is an aspherical mirror.
8. The optical assembly with backlight monitoring of any of claims 1-6, wherein the first optical interface, the second optical interface, and the third optical interface are planar.
9. The optical package with backlight monitoring of any of claims 1-6, wherein the lens substrate, the entrance collimating lens, and the focusing lens are polyetherimide materials.
10. A light module comprising a light module with backlight monitoring according to any of claims 1-9 and a housing enclosing the light module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021796408.1U CN213423536U (en) | 2020-08-25 | 2020-08-25 | Optical assembly with backlight monitoring function and optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021796408.1U CN213423536U (en) | 2020-08-25 | 2020-08-25 | Optical assembly with backlight monitoring function and optical module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213423536U true CN213423536U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021796408.1U Active CN213423536U (en) | 2020-08-25 | 2020-08-25 | Optical assembly with backlight monitoring function and optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213423536U (en) |
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2020
- 2020-08-25 CN CN202021796408.1U patent/CN213423536U/en active Active
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Address after: 518000 No. 35, Cuijing Road, Pingshan New District, Shenzhen, Guangdong Patentee after: Ona Technology (Shenzhen) Group Co.,Ltd. Address before: No.35 Cuijing Road, Pingshan District, Shenzhen City, Guangdong Province Patentee before: O-NET COMMUNICATIONS (SHENZHEN) Ltd. |
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