CN215375862U

CN215375862U - Optical monitoring assembly and communication equipment

Info

Publication number: CN215375862U
Application number: CN202120538547.2U
Authority: CN
Inventors: 赵潇
Original assignee: TP Link Technologies Co Ltd
Current assignee: TP Link Technologies Co Ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-12-31
Anticipated expiration: 2031-03-15

Abstract

The utility model relates to the technical field of communication equipment, and provides an optical monitoring assembly which comprises: the laser light source, the lens body, the light receiving unit, the reflector, the incident collimating lens and the emergent focusing lens; the lens body has a first surface, a second surface, and a third surface; the emergent light beam of the laser light source enters the lens main body after passing through the incident collimating lens to form an incident light beam, and a part of the incident light beam is totally reflected by the first surface and then emitted out through the emergent focusing lens; another part of the incident light beam is emitted to the reflector through the second surface, and enters the lens body after being reflected by the reflector and is emitted to the light receiving unit from the third surface. The light-emitting detection of the laser light source can be realized through the matching of the reflector and the lens main body, and the structure is simple and reliable.

Description

Optical monitoring assembly and communication equipment

Technical Field

The utility model belongs to the technical field of communication equipment, and particularly relates to an optical monitoring assembly and communication equipment.

Background

In modern communication devices (e.g., routers), it is often necessary to transmit signals via a laser beam. When the laser light source emits a laser beam, the laser light source needs to be monitored in order to detect the light emitting state of the laser light source. In the conventional monitoring method, a beam splitter is generally disposed on a laser transmission path (i.e., after a laser beam is irradiated on the beam splitter, a part of the laser beam is reflected and output by the beam splitter, and another part of the laser beam passes through the beam splitter and reaches a light detection unit to detect a light emitting state of the laser beam). However, the production process of the light splitting sheet is difficult, and the installation is complex and unreliable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an optical monitoring assembly to solve the technical problems of high production process difficulty and complex and unreliable installation of the optical monitoring assembly in the prior art.

In order to achieve the purpose, the utility model adopts the technical scheme that: there is provided a light monitoring assembly comprising: the laser light source, the lens body, the light receiving unit, the reflector, the incident collimating lens and the emergent focusing lens; the lens body has a first surface, a second surface, and a third surface;

the emergent light beam of the laser light source enters the lens main body after passing through the incident collimating lens to form an incident light beam, and a part of the incident light beam is totally reflected by the first surface and then emitted out through the emergent focusing lens; another part of the incident light beam is emitted to the reflector through the second surface, and enters the lens body after being reflected by the reflector and is emitted to the light receiving unit from the third surface.

Further, the surface of the lens body is concavely provided with a first concave part, and the reflector is arranged in the first concave part.

Furthermore, a first clamping groove and a second clamping groove which are oppositely arranged are formed in the inner wall of the first concave part; one end of the reflector is clamped in the first clamping groove, and the other end of the reflector is clamped in the second clamping groove.

Further, the first surface and the second surface are respectively located on an inner wall of the first recess.

Further, the reflector is bonded to the lens body.

Further, the first surface and the second surface are adjacent.

Further, a second concave portion is formed on the surface of the lens body in a concave mode, and the third surface is the inner wall of the second concave portion.

Further, the laser light source and the light receiver are located on the same side of the lens body; the exit focusing lens is positioned on the other side of the lens body.

Further, the laser light source is a vertical cavity surface emitting laser, and the light receiving unit is a monitoring photodiode.

The utility model also provides communication equipment which is characterized by comprising an optical fiber and the optical monitoring component; the light beam emitted from the emergent focusing lens enters the optical fiber.

The optical monitoring assembly provided by the utility model has the beneficial effects that: compared with the prior art, the optical monitoring assembly provided by the utility model has the advantages that the laser beam emitted by the laser light source enters the lens main body to form the incident beam after being collimated by the incident collimating lens, part of the incident beam is totally reflected by the first surface when contacting with the first surface of the lens main body, and the beam totally reflected by the first surface reaches the emergent focusing lens to be output; when the other part of the incident beam is contacted with the second surface, the incident beam is transmitted to the outer side of the lens main body from the second surface and is contacted with the reflector, and the beam transmitted to the reflector from the second surface enters the lens main body after being reflected by the reflector and is emitted to the light receiving unit from the third surface; a user can judge whether the laser light source emits laser light by judging whether the light receiving unit receives the light beam; the light-emitting detection of the laser light source can be realized through the matching of the reflector and the lens main body, and the structure is simple and reliable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram of an optical monitoring module according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a lens body; 11-an incident collimating lens; 12-an exit focusing lens; 131-a first surface; 132-a second surface; 133-a third surface; 14-a first recess; 141-a first card slot; 142-a second card slot; 15-a second recess; 2-a laser light source; 3-a light receiving unit; 4-a mirror; 5-optical fiber.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the 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 is therefore not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" 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. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, the optical monitoring device of the present invention will be described. The optical monitoring assembly includes: a laser light source 2, a lens body 1, a light receiving unit 3, a reflector 4, an incident collimator lens 11, and an exit focusing lens 12; the lens body 1 has a first surface 131, a second surface 132, and a third surface 133; the emergent light beam of the laser light source 2 enters the lens body 1 after passing through the incident collimating lens 11 to form an incident light beam, and a part of the incident light beam is totally reflected by the first surface 131 and then emitted out through the emergent focusing lens 12; another part of the incident light beam exits to the reflecting mirror 4 through the second surface 132, and enters the lens body 1 after being reflected by the reflecting mirror 4 and exits to the light receiving unit 3 from the third surface 133.

Thus, the laser beam emitted by the laser source 2 enters the lens body 1 to form an incident beam after being collimated by the incident collimating lens 11; when a part of the incident beam contacts the first surface 131 of the lens body 1, the part of the incident beam is totally reflected by the first surface 131 (wherein, an included angle between the incident beam and the first surface 131 satisfies a total reflection condition), and the beam totally reflected by the first surface 131 reaches the exit focusing lens 12 to be output (in an embodiment, the output beam focused by the focusing lens 12 can enter the optical fiber 5); when another part of the incident light beam contacts the second surface 132, the other part of the incident light beam transmits from the second surface 132 to the outside of the lens body 1 (where, the included angle between the incident light beam and the second surface 132 does not satisfy the total reflection condition) and contacts the reflector 4, and the light beam transmitted from the second surface 132 to the reflector 4 is reflected by the reflector 4, enters the lens body 1 again, and exits from the third surface 133 to the light receiving unit 3; a user can judge whether the laser light source 2 emits laser light by judging whether the light receiving unit 3 receives the light beam; the light-emitting detection of the laser light source 2 can be realized through the matching of the reflector 4 and the lens main body 1, and the structure is simple and reliable.

Specifically, in one embodiment, the light beam transmitted from the second surface 132 to the mirror 4 is reflected by the mirror 4 and enters the lens body 1 from the first surface 131.

Specifically, in one embodiment, the beam of the laser light source 2 is infrared or visible light.

In particular, in one embodiment, the lens body 1 may be plastic or glass.

Specifically, in one embodiment, the incident collimating lens 11 may be made of plastic or glass.

In particular, in one embodiment, the exit focusing lens 12 may be plastic or glass.

Specifically, in one embodiment, the reflector 4 has a metal reflective film (e.g., silver film) thereon. Specifically, in one embodiment, the mirror 4 is coated with a fully reflective film that matches the wavelength band of the laser beam.

Specifically, in one embodiment, the incident collimating lens 11 is integrally formed with the lens body 1; and/or the exit focusing lens 12 is integrally formed with the lens body 1.

Specifically, in one embodiment, the first surface 131, the second surface 132, and the third surface 133 are each planar.

Specifically, in one embodiment, the incident beam is totally reflected at an angle greater than 45 ° to the first surface 131. Specifically, in one embodiment, the incident light beam makes an angle of less than 45 ° with the second surface 132.

Further, referring to fig. 1, as an embodiment of the optical monitoring assembly provided by the present invention, a first concave portion 14 is formed on a surface of the lens body 1, and the reflector 4 is disposed in the first concave portion 14. Thus, the reflector 4 is disposed in the first recess 14, and is not easily interfered or damaged by the external environment, thereby improving the reliability.

Further, referring to fig. 1, as a specific embodiment of the optical monitoring assembly provided by the present invention, a first card slot 141 and a second card slot 142 are oppositely disposed on an inner wall of the first recess 14; one end of the reflector 4 is clamped in the first clamping groove 141, and the other end of the reflector 4 is clamped in the second clamping groove 142, so that the reflector is very firm.

Further, referring to fig. 1, as an embodiment of the optical monitoring assembly provided by the present invention, a reflector 4 is adhered to the lens body 1. Therefore, the reflector 4 is directly stood on the lens body 1 in a glue bonding mode, and the installation is simple, convenient and firm.

Further, referring to fig. 1, as an embodiment of the optical monitoring assembly of the present invention, the first surface 131 and the second surface 132 are respectively located on the inner wall of the first recess 14. As such, the first and

second surfaces

131 and 132 are not easily disturbed or damaged by the external environment.

Further, referring to fig. 1, as an embodiment of the optical monitoring assembly provided by the present invention, the first surface 131 and the second surface 132 are adjacent to each other. Thus, the incident light beam of the laser light source 2 entering the lens body 1 through the incident collimating lens 11 can be separately used by the adjacent first surface 131 and the second surface 132, and the utilization rate of the incident light beam is improved.

Further, referring to fig. 1, as an embodiment of the optical monitoring device provided by the present invention, a second concave portion 15 is formed on a surface of the lens body 1, and the third surface 133 is an inner wall of the second concave portion 15. As such, the third surface 133 is not easily disturbed or damaged by the external environment.

Further, referring to fig. 1, as an embodiment of the optical monitoring assembly provided by the present invention, the laser light source 2 and the optical receiver are located on the same side of the lens body 1; the exit focusing lens 12 is located on the other side of the lens body 1. In this way, the laser light source 2 and the light receiver can be arranged on the same side of the lens body 1, which is convenient for installation; the emergent focusing lens 12 is positioned at the other side of the focusing lens and is not easy to interfere with the laser light source 2 and the light receiver.

Further, referring to fig. 1, as an embodiment of the optical monitoring assembly provided by the present invention, the Laser light source 2 is a Vertical-Cavity Surface-Emitting Laser (in an embodiment, the Vertical-Cavity Surface-Emitting Laser is a VCSEL (Vertical-Cavity Surface-Emitting Laser), and the light receiving unit 3 is a monitoring photodiode (in an embodiment, the monitoring photodiode is a Monitoring Photodiode (MPD)).

Specifically, in one embodiment, the light receiving unit 3 may be a photodiode or a photoresistor.

Referring to fig. 1, the present invention further provides a communication device, which is characterized by comprising an optical fiber 5 and an optical monitoring assembly; the light beam emitted from the exit focusing lens 12 enters the optical fiber 5. Thus, the optical monitoring assembly is used, and laser beams emitted by the laser light source 2 are collimated by the incident collimating lens 11 and then enter the lens main body 1 to form incident beams; when a part of the incident beam contacts the first surface 131 of the lens body 1, the part of the incident beam is totally reflected by the first surface 131 (wherein, an included angle between the incident beam and the first surface 131 satisfies a total reflection condition), and the beam totally reflected by the first surface 131 reaches the exit focusing lens 12 to be output (in an embodiment, the output beam focused by the focusing lens 12 can enter the optical fiber 5); when another part of the incident light beam contacts the second surface 132, the other part of the incident light beam transmits from the second surface 132 to the outside of the lens body 1 (where, the included angle between the incident light beam and the second surface 132 does not satisfy the total reflection condition) and contacts the reflector 4, and the light beam transmitted from the second surface 132 to the reflector 4 is reflected by the reflector 4, enters the lens body 1 again, and exits from the third surface 133 to the light receiving unit 3; a user can judge whether the laser light source 2 emits laser light by judging whether the light receiving unit 3 receives the light beam; the light-emitting detection of the laser light source 2 can be realized through the matching of the reflector 4 and the lens main body 1, and the structure is simple and reliable; the light beam emitted from the exit focusing lens 12 enters the optical fiber 5 and is transmitted.

Specifically, in one embodiment, the optical fiber 5 is a multimode optical fiber. Thus, the diameter of the multimode fiber is larger than that of the single mode fiber, and the laser beam can easily enter the multimode fiber.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An optical monitoring assembly, comprising: the laser light source, the lens body, the light receiving unit, the reflector, the incident collimating lens and the emergent focusing lens; the lens body has a first surface, a second surface, and a third surface;

2. The optical monitoring assembly of claim 1, wherein the surface of the lens body is recessed to form a first recess, the mirror being disposed within the first recess.

3. The optical monitoring assembly of claim 2 wherein the first recess has a first and second opposing notches in an inner wall thereof; one end of the reflector is clamped in the first clamping groove, and the other end of the reflector is clamped in the second clamping groove.

4. The optical monitoring assembly of claim 2 wherein the first and second surfaces are each located on an inner wall of the first recess.

5. The optical monitoring assembly of claim 1 wherein the mirror is bonded to the lens body.

6. The optical monitoring assembly of claim 1 wherein the first surface and the second surface are adjacent.

7. The optical monitoring assembly of claim 1, wherein the surface of the lens body is recessed to form a second recess, and the third surface is an inner wall of the second recess.

8. The optical monitoring assembly of claim 1, further comprising: an optical receiver; the laser light source and the light receiver are positioned on the same side of the lens body; the exit focusing lens is positioned on the other side of the lens body.

9. The optical monitoring assembly of any of claims 1 to 7, wherein the laser light source is a vertical cavity surface emitting laser and the light receiving unit is a monitoring photodiode.

10. Communication device, comprising an optical fiber and an optical monitoring assembly according to any of claims 1 to 9; the light beam emitted from the emergent focusing lens enters the optical fiber.