CN210666057U

CN210666057U - Laser long-distance diffuse reflection sensor

Info

Publication number: CN210666057U
Application number: CN201921829881.2U
Authority: CN
Inventors: 范永明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-06-02
Anticipated expiration: 2029-10-28

Abstract

The utility model discloses a remote diffuse reflection sensor of laser, include: the device comprises a shell, a laser emission tube, an optical filter, a silicon photocell, an oscillator and a bottom cover; the shell is provided with a light gathering hole and a light transmitting hole which are communicated with the inside of the shell; the shell is provided with a bottom cover; the laser emission tube, the optical filter, the silicon photocell and the oscillator are arranged inside the shell; the laser emission tube, the silicon photocell and the oscillator are arranged on the bottom plate, and the optical filter is arranged on the silicon photocell; the oscillator is electrically connected with the laser emission tube; the bottom plate is arranged on the bottom cover. The utility model discloses use the light filter of accurate luminousness, can filter the unnecessary light of surely light thing reflection when near surely light, solve under the condition of high-power laser, closely the too strong problem of diffuse reflection can compromise remote and closely detect simultaneously and surely light thing.

Description

Laser long-distance diffuse reflection sensor

Technical Field

The utility model relates to a sensor field specifically is a remote diffuse reflection sensor of laser.

Background

Under the condition of high-power laser, the existing diffuse reflection laser sensor has too strong near-distance diffuse reflection, and cannot detect light-cutting objects at both long distance and near distance; if sensing of a light-cutting object beyond 1000mm is required, the laser power is required to be more than 10mw, but the light-cutting reflection of 10mw laser light at a short distance (less than 500mm) from the light-cutting object is too strong, so that the light-cutting is ineffective and the light-cutting object cannot be detected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of prior art, provide one kind and can compromise remote and closely detect the diffuse reflection laser sensor who cuts the light thing simultaneously.

The utility model discloses a realize through following technique:

a laser long range diffuse reflectance sensor comprising: the device comprises a shell, a laser emission tube, an optical filter, a silicon photocell, an oscillator and a bottom cover; the shell is provided with a light gathering hole and a light transmitting hole which are communicated with the inside of the shell; the shell is provided with a bottom cover; the laser emission tube, the optical filter, the silicon photocell and the oscillator are arranged inside the shell; the laser emission tube, the silicon photocell and the oscillator are arranged on the bottom plate, and the laser emission tube is positioned below the light hole; the optical filter is positioned below the light gathering hole and is arranged on the silicon photocell; the oscillator is electrically connected with the laser emission tube; the bottom plate is arranged on the bottom cover.

Further, a condensing lens is mounted on the condensing hole.

Further, the optical filter is an accurate light transmittance optical filter.

Further, a fully transparent gasket is arranged on the optical filter.

The utility model discloses a theory of operation: the oscillator enables a circuit of the laser transmitting tube to oscillate, visible laser is transmitted, the laser is reflected by a reflecting plate at a far distance, is collected by a condensing lens and is focused on a silicon photocell, and when a shielding object blocks the laser and the silicon photocell cannot receive the laser, a sensor signal is triggered; when the nearby shielding object is shielded and the reflection is too strong, the filter can filter the redundant light reflected by the nearby shielding object.

The utility model has the advantages that: the light filter with accurate light transmittance can filter redundant light reflected by the light cutting object when the light cutting object is in near light cutting, solves the problem of excessively strong near diffuse reflection under the condition of high-power laser, and can simultaneously consider both long-distance and near-distance detection of the light cutting object.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Reference signs mean: 1. a housing; 2. a laser emitting tube; 3. an optical filter; 4. a silicon photocell; 5. an oscillator; 6. a bottom cover; 7. a base plate; 8. a light gathering hole; 9. a light-transmitting hole; 10. a condenser lens; 11. a fully transparent gasket.

Detailed Description

In order to make the technical solution, objects and advantages of the present invention more apparent, the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1, a laser long-distance diffuse reflection sensor includes: the device comprises a shell 1, a laser emission tube 2, an optical filter 3, a silicon photocell 4, an oscillator 5 and a bottom cover 6; the shell 1 is T-shaped, the top end of the shell 1 is provided with a light gathering hole 8 and a light transmitting hole 9, and the light gathering hole 8 and the light transmitting hole 9 are communicated with the inside of the shell 1; the top end of the light-gathering hole 8 is provided with a light-gathering lens 10, the light-gathering lens 10 can collect a large amount of light reflected from a far reflecting plate, and the silicon photocell 4 is prevented from receiving enough reflected light to trigger a sensor signal; the bottom cover is buckled at the bottom of the shell 1; the laser emission tube 2, the optical filter 3, the silicon photocell 4 and the oscillator 5 are arranged inside the shell 1; the laser emission tube 2, the silicon photocell 4 and the oscillator 5 are arranged on the bottom plate 7, the laser emission tube 2 is arranged below the light hole 9, the optical filter 3 is arranged below the light gathering hole 8, the oscillator 5 is arranged between the laser emission tube 2 and the silicon photocell 4, and the optical filter 3 is arranged on the silicon photocell 4; the oscillator 5 is electrically connected with the laser emission tube 2; the bottom plate 7 is placed on the bottom cover 6.

The accurate luminousness light filter of filter 3 adoption nd model, control luminousness that can be accurate, shelter from when there being shelter from the thing near, when reflection is too strong, and light filter 3 can filter the unnecessary light that near shelter from the thing reflection.

The filter 3 is provided with a fully transparent gasket 11 for fixing the filter 3.

The oscillator 5 enables a circuit of the laser transmitting tube 2 to oscillate to transmit visible laser, the laser is reflected on a reflecting plate at a far distance, is collected by the condensing lens 10 and is focused on the silicon photocell 4, and when a shielding object blocks the laser, the silicon photocell 4 cannot receive the reflected laser, and then a sensor signal is triggered; the light filter 3 filters redundant light reflected by the light-cutting object when the light-cutting object is near light-cutting, solves the problem of excessively strong near diffuse reflection under the condition of high-power laser, and can detect the light-cutting object both at a long distance and a short distance.

The above is only the preferred embodiment of the present invention, and to the technical personnel in the technical field, without departing from the present invention, the embodiment can still be modified, and the corresponding modification should also be regarded as the protection scope of the present invention.

Claims

1. A laser long range diffuse reflectance sensor comprising: the device comprises a shell, a laser emission tube, an optical filter, a silicon photocell, an oscillator and a bottom cover; the method is characterized in that: the shell is provided with a light gathering hole and a light transmitting hole which are communicated with the inside of the shell; the shell is provided with a bottom cover; the laser emission tube, the optical filter, the silicon photocell and the oscillator are arranged inside the shell; the laser emission tube, the silicon photocell and the oscillator are arranged on the bottom plate, and the laser emission tube is positioned below the light hole; the optical filter is positioned below the light gathering hole and is arranged on the silicon photocell; the oscillator is electrically connected with the laser emission tube; the bottom plate is arranged on the bottom cover.

2. A laser long range diffuse reflectance sensor according to claim 1, wherein: and the light gathering hole is provided with a light gathering lens.

3. A laser long range diffuse reflectance sensor according to claim 1, wherein: the optical filter is an accurate light transmittance optical filter.

4. A laser long range diffuse reflectance sensor according to claim 1, wherein: and a fully transparent gasket is arranged on the optical filter.