CN215178146U

CN215178146U - A specular reflection type coaxial photoelectric sensor

Info

Publication number: CN215178146U
Application number: CN202121269304.XU
Authority: CN
Inventors: 卿定求
Original assignee: Guangzhou Heyi Intelligent Technology Co ltd
Current assignee: Guangzhou Heyi Intelligent Technology Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-12-14
Anticipated expiration: 2031-06-07

Abstract

The utility model discloses a specular reflection type coaxial photoelectric sensor, which comprises a plastic casing, an acrylic lens is arranged on one side of the plastic casing, and a reflective lens, a first polarizer and a second polarizer are arranged in the inner cavity of the plastic bracket. The first polarizer and the second polarizer are 90 degrees, the reflective lens is inclined, the inner cavity of the plastic casing is provided with a PCB board, the top of the PCB board is provided with a potentiometer, and the middle of the PCB board is provided with a receiving element and a emitting lamp. A filter is arranged below the emission lamp, and an emission lens is arranged on one side of the plastic bracket. The utility model utilizes the matching arrangement of the reflective lens, the first polarizer, the second polarizer and the emitting lens, through two polarizers with a ninety-degree angle, it is convenient to improve the anti-interference of the device, and the reflective lens is convenient for reflection The light can oscillate arbitrarily and return, through a lens, so that both emission and reception can be formed through the emission lens, which makes the device more practical.

Description

Mirror reflection type coaxial photoelectric sensor

Technical Field

The utility model relates to a photoelectric sensor field, in particular to coaxial photoelectric sensor of mirror surface reflection-type.

Background

The specular reflection photoelectric sensor is also called a retro reflection photoelectric sensor, and reflection of light includes regular reflection, retro reflection, and diffuse reflection, and an optical filter that restricts the vibration direction of unpolarized light to one direction is called a polarization filter, that is, a state in which light projected from an LED passes through the polarization filter and vibrates only in one direction is called polarization, and polarization that vibrates in a certain direction cannot pass through the polarization filter that restricts vibration in the vertical direction.

The conventional specular reflection photoelectric sensor cannot pass through a polarization filter on a light receiving side because the polarization direction of reflected light emitted from an object is kept horizontal, and the specular object in the conventional specular reflection photoelectric sensor has no characteristic of changing the vibration direction, and the oscillation direction of the reflected light is the same as that of incident light, so that the reflected light cannot pass through a polarization filter, and light cannot reach a light receiving element.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coaxial photoelectric sensor of specular reflection-type to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a mirror reflection type coaxial photoelectric sensor comprises a plastic shell, wherein an acrylic lens is arranged on one side of the plastic shell, a plastic support is arranged in an inner cavity of the plastic shell, a reflection lens, a first polaroid and a second polaroid are arranged in the inner cavity of the plastic support, the first polaroid and the second polaroid are ninety degrees, and the reflection lens is obliquely arranged;

the inner chamber of plastic shell is provided with the PCB board, the top fixedly connected with potentiometre of PCB board, the middle part fixedly connected with receiving element and the transmitting lamp of PCB board, the below of transmitting lamp is provided with the light filter, one side fixedly connected with transmitting lens of plastic support.

Preferably, the first polarizer, the second polarizer and the reflector are fixedly clamped with the bottom of the plastic support, and the reflector is arranged between the first polarizer and the second polarizer.

Preferably, the top end of the plastic shell is fixedly connected with a metal knob in an inserting mode, and the outer wall of the acrylic lens is fixedly connected with one side of the plastic shell in an inserting mode.

Preferably, the bottom of the plastic shell is fixedly inserted and connected with a cable, and the front of the plastic shell is fixedly inserted and connected with a plastic cover plate.

Preferably, the plastic support is fixedly connected with the inner wall of the plastic shell, and the potentiometer is movably clamped with the top of the plastic support.

Preferably, the PCB board is fixedly connected with the inner wall of the plastic shell, and the transmitting lamp is arranged below the receiving element.

Preferably, the optical filter is fixedly clamped with the top of the plastic support, and the receiving element is connected with the top of the plastic support in a sliding and penetrating manner.

The utility model discloses a technological effect and advantage:

(1) the utility model discloses utilize the setting mode that reflection lens, first polaroid, second polaroid and transmitting lens cooperate, through two polaroids that are ninety degrees, be convenient for improve the interference immunity of device, through reflection lens, be convenient for the reflection light energy to oscillate wantonly and return, through a lens, namely coaxial, make transmission and receipt homoenergetic constitute through transmitting lens, make the practicality of device higher;

(2) the utility model utilizes the matched setting mode of the plastic support, the transmitting lamp and the optical filter, and the connection of the plastic support and the plastic shell is convenient for positioning the reflecting lens, the first polaroid, the second polaroid, the transmitting lens and the like, so that the structure of the device is more stable, and the non-polarized light treatment and the light filtration of the light are convenient through the transmitting lamp and the optical filter;

drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the overall front assembly structure of the present invention.

Fig. 3 is a schematic diagram of the overall explosion structure of the present invention.

Fig. 4 is the schematic view of the whole light path structure of the present invention.

In the figure: 1. a plastic shell; 2. a metal knob; 3. an acrylic lens; 4. a cable; 5. a plastic bracket; 6. a mirror plate; 7. a first polarizer; 8. a second polarizer; 9. an optical filter; 10. a receiving element; 11. a potentiometer; 12. a PCB board; 13. an emission lamp; 14. a plastic cover plate; 15. an emission lens.

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.

The utility model provides a mirror reflection type coaxial photoelectric sensor as shown in figures 1-4, which comprises a plastic shell 1, which is convenient for protecting the safety of the device and preventing dust from affecting the safety and practicability of the device, an acrylic lens 3 is arranged on one side of the plastic shell 1, which is convenient for light to transmit, and is convenient for protecting the transmitting lens 15, and the like, and preventing the transmitting lens 15 from generating phenomena such as grinding marks, etc., a plastic bracket 5 is arranged in the inner cavity of the plastic shell 1, which is convenient for supporting and limiting the positions of the reflecting lens 6, a first polaroid 7, a second polaroid 8, the transmitting lens 15, etc., a reflecting lens 6, a first polaroid 7 and a second polaroid 8 are arranged in the inner cavity of the plastic bracket 5, the reflecting lens 6 is of a beam splitter structure, one side of the reflecting lens 6 is provided with a coating film, and is convenient for half of light to transmit, and half of light can be reflected, the thickness of the reflector 6 is 0.5mm, the length is 6.6mm, the height is 8.2mm, the first polarizer 7 and the second polarizer 8 are ninety degrees, and the reflector 6 is obliquely arranged, so that light can be polarized and reflected conveniently;

the inner cavity of the plastic shell 1 is provided with a PCB 12, the top of the PCB 12 is fixedly connected with a potentiometer 11, which is convenient for the stability of the electrical connection of the device, the middle part of the PCB 12 is fixedly connected with a receiving element 10 and a transmitting lamp 13, the transmitting lamp 13 uses 3528 point light source, the thickness of the wafer of the transmitting lamp 13 is 275um, the hole is 170um, a light filter 9 is arranged below the transmitting lamp 13, which is convenient for filtering light, one side of the plastic support 5 is fixedly connected with a transmitting lens 15, the detection distance of the transmitting lens 15 is 20-3000mm, and has a polarized filtering capability detection transparent film, the transmitting lens 15 is matched with a reflecting plate, the transmitting lens 15 detects 20mm of the object at the minimum, the transmitting lens 15 is matched with the reflecting plate for use, the light spot is about 10mm at the distance of 1m, the light spot is about 30mm at the distance of 3m, and the light spot is enlarged by the distance between the transmitting lens 15 and the reflecting plate, the light spot is in a circular structure, and is more uniform through the transmitting lens 15, the periphery of the light spot is clean and free of stray light, and the light spot is convenient to receive and transmit;

the first polaroid 7, the second polaroid 8 and the reflecting lens 6 are fixedly clamped with the bottom of the plastic support 5, and the reflecting lens 6 is arranged between the first polaroid 7 and the second polaroid 8, so that the stability of the positions of the first polaroid 7, the second polaroid 8 and the reflecting lens 6 and the plastic support 5 is improved, and the device is convenient to disassemble or replace;

the top end of the plastic shell 1 is fixedly and alternately connected with a metal knob 2, the metal knob 2 is fixedly connected with a potentiometer 11, the structure of the device is convenient to stabilize, the outer wall of the acrylic lens 3 is fixedly and alternately connected with one side of the plastic shell 1, the bottom of the plastic shell 1 is fixedly and alternately connected with a cable 4, and the front side of the plastic shell 1 is fixedly and alternately connected with a plastic cover plate 14, so that the protection performance of the device is convenient to improve, and the structure of the device is more complete;

the inner wall fixed connection of plastic support 5 and plastic shell 1, the top activity joint of potentiometre 11 and plastic support 5, the inner wall fixed connection of PCB board 12 and plastic shell 1, emission lamp 13 sets up in the below of receiving element 10, the fixed joint in top of light filter 9 and plastic support 5, receiving element 10 slides with the top of plastic support 5 and alternates to be connected, is convenient for improve the stability of the reflection sensing of light.

The utility model discloses the theory of operation:

during the use, through the opening of emission lamp 13, make light pass through second polaroid 8, make light by the horizontal polarization, make polarized light fall on reflector plate 6, make the polarization direction disturbed, make light pass through perpendicularly and can see through reflector plate 6 and transmitting lens 15, directly arrive the upper surface of reflecting plate, the light of reflecting on the reflector plate is passed through simultaneously, through transmitting lens 15, transmit to reflector plate 6 on, through the reflection beam splitting performance of reflector plate 6, make light can pass through first polaroid 7, make light can reach receiving element 10, be received by receiving element 10.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The mirror reflection type coaxial photoelectric sensor comprises a plastic shell (1), and is characterized in that an acrylic lens (3) is arranged on one side of the plastic shell (1), a plastic support (5) is arranged in an inner cavity of the plastic shell (1), a reflecting lens (6), a first polaroid (7) and a second polaroid (8) are arranged in the inner cavity of the plastic support (5), the first polaroid (7) and the second polaroid (8) are ninety degrees, and the reflecting lens (6) is obliquely arranged;

the inner chamber of plastic shell (1) is provided with PCB board (12), the top fixedly connected with potentiometre (11) of PCB board (12), the middle part fixedly connected with receiving element (10) and the transmitting lamp (13) of PCB board (12), the below of transmitting lamp (13) is provided with light filter (9), one side fixedly connected with transmitting lens (15) of plastic support (5).

2. A specularly reflective coaxial optoelectronic sensor according to claim 1, wherein the first polarizer (7), the second polarizer (8) and the reflective lens (6) are fixedly clamped to the bottom of the plastic frame (5), and the reflective lens (6) is disposed between the first polarizer (7) and the second polarizer (8).

3. The coaxial photoelectric sensor of claim 1, wherein a metal knob (2) is fixedly inserted into the top of the plastic housing (1), and the acrylic lens (3) has an outer wall fixedly inserted into one side of the plastic housing (1).

4. The coaxial photoelectric sensor of claim 1, wherein the cable (4) is fixedly inserted into a bottom of the plastic housing (1), and the plastic cover (14) is fixedly inserted into a front surface of the plastic housing (1).

5. The coaxial photoelectric sensor of claim 1, wherein the plastic support (5) is fixedly connected to an inner wall of the plastic housing (1), and the potentiometer (11) is movably clamped to a top of the plastic support (5).

6. The coaxial photoelectric sensor of claim 1, wherein the PCB (12) is fixedly connected to an inner wall of the plastic housing (1), and the emission lamp (13) is disposed below the receiving element (10).

7. The coaxial sensor of claim 1, wherein the filter (9) is fixed to the top of the plastic frame (5), and the receiving element (10) is slidably inserted into the top of the plastic frame (5).