CN215067436U

CN215067436U - Square light beam sensor lens

Info

Publication number: CN215067436U
Application number: CN202121385187.3U
Authority: CN
Inventors: 王维虎
Original assignee: Shenzhen Ruiguangda Photoelectric Co ltd
Current assignee: Shenzhen Ruiguangda Photoelectric Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-12-07
Anticipated expiration: 2031-06-22

Abstract

The utility model relates to a lens optics and optical fiber sensor technical field especially relate to a square beam sensor lens, including infrared beam outgoing end, a lens subassembly, No. two lens subassemblies and infrared beam receiving terminal, the big light beam that infrared beam outgoing end jetted out gathers into parallel light beam through a lens subassembly, and parallel light beam is turned over the light beam 90 degrees directions by a lens subassembly; the second lens assembly is arranged at the position opposite to the mirror image of the first lens assembly, and the bent light beam enters the second lens assembly and is bent by 90 degrees again; the refracted light beams are converged and transmitted back to the infrared light beam receiving end through the second lens assembly. The utility model provides a because of the lens emergent beam cross section is little and lead to photoelectric sensor's detection range little, relatively poor and service environment requirement height and function singleness scheduling problem of surveying small-size object precision, can reach the effect that a sensor surveyed a plurality of variables.

Description

Square light beam sensor lens

Technical Field

The utility model relates to a lens optics and optical fiber sensor technical field especially relate to a square beam sensor lens.

Background

The lens in the mainstream photoelectric sensor in the current market converges an optical signal into a round small light beam to be transmitted to a receiver (as shown in fig. 1), and the lens in the traditional photoelectric sensor has a round plano-convex or double-convex structure, and is used for converging a large light beam transmitted by an optical fiber into a round small light beam to be transmitted to a receiving end. The sensor has several disadvantages in optical signal transmission due to the small cross-section of the beamlets:

1. the detection range is small, and the precision of detecting small-size objects is poor. The size of the detected object cannot be smaller than 80% of the size of the lens in the sensor; the motion trajectory of the object must pass through the light beam.

2. The requirement on the use environment is high. Smoke particles in harsh environments can reduce the detection sensitivity of the sensor.

3. The function is single. One sensor can only detect one variable, but not multiple variables.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a square beam sensor lens has solved because of the little detection scope that leads to photoelectric sensor of lens outgoing beam cross section is little, relatively poor and service environment requires high and the function singleness scheduling problem to surveying small-size object precision.

In order to solve the technical problem, the utility model provides a following technical scheme: a square light beam sensor lens comprises an infrared light beam emitting end, a first lens assembly, a second lens assembly and an infrared light beam receiving end, wherein a large light beam emitted by the infrared light beam emitting end is converged into a parallel light beam through the first lens assembly, and the parallel light beam is bent in a 90-degree direction by the first lens assembly;

the second lens assembly is arranged at the position opposite to the mirror image of the first lens assembly, and the bent light beam enters the second lens assembly and is bent by 90 degrees again;

the refracted light beams are converged and transmitted back to the infrared light beam receiving end through the second lens assembly.

Furthermore, the infrared beam emitting end is located right below the first lens assembly, and the infrared beam receiving end is located right below the second lens assembly.

Furthermore, the first lens component comprises a first lens, and a first lens light-gathering curved surface is arranged at the bottom of the first lens and is used for gathering light beams into a parallel state.

Furthermore, the left side and the right side of the first lens are respectively provided with a first lens micro-structure refraction surface and a light beam emergent surface, the first lens micro-structure refraction surface refracts the light beam in the direction of 90 degrees and emits the light beam from the light beam emergent surface, and the cross section of the light beam at the moment is changed into a square shape.

Further, No. two lens subassembly includes No. two lens, No. two lens's left side is equipped with the square light beam of light beam entering face cooperation and gets into, No. two lens's right side is equipped with second lens micro-structure refracting surface and is used for the light beam to roll over 90 degrees directions.

Furthermore, a second lens light-gathering curved surface is arranged at the bottom of the second lens to gather and transmit light beam signals back to the optical fiber receiving surface.

The utility model provides a square beam sensor lens possesses following beneficial effect:

1. the utility model discloses a with the circular plano-convex of sensing lens shape cancellation or biconvex structure, change into the dysmorphism structure, increase the miniature refracting surface structure of high accuracy on traditional lens only the basis of spotlight function, can turn over 90 degrees with the light signal direction, the light beam cross section of exitting can change and change according to lens play plain noodles size and shape, the lens is exitted light beam's transversal great.

2. The utility model provides a because of the lens emergent beam cross section is little and lead to photoelectric sensor's detection range little, relatively poor and service environment requirement height and function singleness scheduling problem of surveying small-size object precision, can reach the effect that a sensor surveyed a plurality of variables.

Drawings

FIG. 1 is a schematic structural diagram of a conventional light beam sensor;

fig. 2 is a schematic structural diagram of a square beam sensor lens according to the present invention;

fig. 3 is a schematic structural diagram of a first lens assembly according to the present invention;

fig. 4 is an enlarged view of a portion a of fig. 3 according to the present invention;

fig. 5 is a schematic structural diagram of a second lens module according to the present invention;

fig. 6 is a schematic view of the cross-sectional shape of the light beam according to the present invention.

In the figure: 1. an infrared beam exit end; 2. a first lens assembly; 3. a second lens assembly; 4. an infrared light beam receiving end; 201. a first lens; 202. a first lens condensing curved surface; 203. a first lens microstructure refractive surface; 204. a light beam exit surface; 301. a second lens; 302. a second lens condensing curved surface; 303. a second lens microstructure refractive surface; 304. the light beam enters the face.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 2-6, the present invention provides a technical solution: a square light beam sensor lens comprises an infrared light beam emitting end 1, a first lens component 2, a second lens component 3 and an infrared light beam receiving end 4, wherein a large light beam emitted by the infrared light beam emitting end 1 is converged into a parallel light beam through the first lens component 2, and the parallel light beam is bent in a 90-degree direction by the first lens component 2;

the second lens assembly 3 is arranged at the position opposite to the mirror image of the first lens assembly 2, and the bent light beam enters the second lens assembly 3 and is bent by 90 degrees again;

the refracted light beams are converged and transmitted back to the infrared light beam receiving end 4 through the second lens assembly 3.

The shape of the sensing lens is changed into a special-shaped structure by canceling a circular plano-convex or biconvex structure, a high-precision miniature refraction surface structure is added on the basis that the traditional lens only has a light-gathering function, the direction of an optical signal can be folded by 90 degrees, the cross section of an emergent light beam can be changed according to the change of the size and the shape of the emergent light surface of the lens, and the cross section of the emergent light beam of the lens is larger.

The infrared light beam emitting end 1 is located under the first lens assembly 2, the infrared light beam receiving end 4 is located under the second lens assembly 3, the first lens assembly 2 comprises a first lens 201, a first lens light-gathering curved surface 202 is arranged at the bottom of the first lens 201 and used for converging light beams into a parallel state, a first lens micro-structure refraction surface 203 and a light beam emitting surface 204 are respectively arranged on the left side and the right side of the first lens 201, the light beams are refracted by the first lens micro-structure refraction surface 203 in a 90-degree direction and emitted by the light beam emitting surface 204, and the cross sections of the light beams at the moment are square.

Lens module 3 includes lens 301 No. two, lens 301 No. two's left side is equipped with the square light beam of light beam entering face 304 cooperation and gets into, lens 301 No. two's right side is equipped with second lens micro structure refracting surface 303 and is used for the light beam to turn over 90 degrees directions, lens 301 No. two's bottom is equipped with second lens spotlight curved surface 302 and gathers light beam signal and pass back to the optic fibre receiving face in, lens micro structure refracting surface forms for the combination of a plurality of little mirror surfaces, every little mirror surface all can be with light 90 degrees directions of turning over, the ladder of every little mirror surface is 0.16mm apart from length.

The utility model provides a because of the lens emergent beam cross section is little and lead to photoelectric sensor's detection range little, relatively poor and service environment requirement height and function singleness scheduling problem of surveying small-size object precision, can reach the effect that a sensor surveyed a plurality of variables.

It is within the scope of the present application that the size of the sensor lens, the cross-sectional shape of the light beam (e.g., square, circular, oval, etc.), and the like are not limited.

In the using process, the emergent large light beams in the optical fiber are converged into parallel light beams after passing through the first lens condensing curved surface 202 on the first lens 201, the parallel light beams are refracted in the direction of 90 degrees by the first lens microstructure refraction surface 203, and the cross sections of the light beams at the moment are changed into square shapes.

Then the square light beam enters the refraction surface of the second lens micro-structure on the second lens 301, and is turned in the direction of 90 degrees in the same way, and finally the light beam is changed into a parallel light beam, and the light beam signal is converged and transmitted back to the optical fiber receiving surface through the second lens light-gathering curved surface 302.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a square beam sensor lens, includes infrared beam outgoing end (1), a lens subassembly (2), No. two lens subassemblies (3) and infrared beam receiving terminal (4), its characterized in that: the large light beam emitted by the infrared light beam emitting end (1) is converged into a parallel light beam through the first lens assembly (2), and the parallel light beam is refracted by the first lens assembly (2) in a 90-degree direction;

the second lens assembly (3) is arranged at the position of the first lens assembly (2) opposite to the mirror image, and the bent light beam enters the second lens assembly (3) and is bent by 90 degrees again;

the refracted light beams are converged and transmitted back to an infrared light beam receiving end (4) through a second lens assembly (3).

2. A square beam sensor lens of claim 1, wherein: the infrared light beam emitting end (1) is located right below the first lens assembly (2), and the infrared light beam receiving end (4) is located right below the second lens assembly (3).

3. A square beam sensor lens of claim 1, wherein: the first lens assembly (2) comprises a first lens (201), and a first lens condensing curved surface (202) is arranged at the bottom of the first lens (201) and used for converging light beams into a parallel state.

4. A square beam sensor lens according to claim 3, wherein: the left side and the right side of the first lens (201) are respectively provided with a first lens micro-structure refraction surface (203) and a light beam emergence surface (204), the first lens micro-structure refraction surface (203) bends light beams in a 90-degree direction and emits the light beams from the light beam emergence surface (204), and the cross sections of the light beams at the moment are square.

5. A square beam sensor lens of claim 1, wherein: lens subassembly No. two (3) include lens No. two (301), the left side of lens No. two (301) is equipped with light beam entering face (304) cooperation square light beam and gets into, the right side of lens No. two (301) is equipped with second lens micro structure refracting surface (303) and is used for the light beam to turn over 90 degrees directions.

6. The square beam sensor lens of claim 5, wherein: and a second lens condensing curved surface (302) is arranged at the bottom of the second lens (301) to condense and transmit light beam signals back to the optical fiber receiving surface.