CN219265506U

CN219265506U - Laser wavelength detector

Info

Publication number: CN219265506U
Application number: CN202223355446.5U
Authority: CN
Inventors: 蔡晓东; 黄国香
Original assignee: Guangzhou Jingyi Photoelectric Technology Co ltd
Current assignee: Guangzhou Jingyi Photoelectric Technology Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-06-27
Anticipated expiration: 2032-12-12

Abstract

The embodiment of the application provides a laser wavelength detector, which comprises a shell, a laser placing platform, a laser collecting module and a detecting module; the laser placing platform comprises a telescopic rod and a platform plate, and the platform plate is connected with the outer side of the shell through the telescopic rod; the laser collecting module is arranged beside the laser placing platform and comprises an integrating sphere, and an optical inlet of the integrating sphere faces the laser placing platform; the laser inlet of the detection module is connected with the light outlet of the integrating sphere through an optical fiber, and the detection module detects the wavelength of the laser to obtain a wavelength value; with the structure simplification, with laser instrument place platform, laser collection module and detection module integration on small-size shell, have simple structure, portable's advantage.

Description

Laser wavelength detector

Technical Field

Embodiments of the present application relate to the field of optical instruments, and more particularly, but not exclusively, to a laser wavelength detector.

Background

The wavelength of the laser affects the performance of the laser. At present, the conventional optical grating scanning wind-light mode is adopted for detection, so that the detection speed is relatively slow, the structure is complex, the size is large, and the device is inconvenient to carry.

Disclosure of Invention

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the application aims at least solving one of the technical problems in the prior art, and provides a laser wavelength detector which has the advantages of simple structure and portability.

In certain embodiments of the present application, a laser wavelength detector comprises:

a housing;

the laser placing platform comprises a telescopic rod and a platform plate, and the platform plate is connected with the outer side of the shell through the telescopic rod;

the laser collecting module is arranged beside the laser placing platform and comprises an integrating sphere, and an light inlet of the integrating sphere faces the laser placing platform;

the laser inlet of the detection module is connected with the light outlet of the integrating sphere through an optical fiber, and the detection module is used for detecting the wavelength of the laser from the laser collecting module to obtain a wavelength value.

In some embodiments of the present application, the laser wavelength detector is further provided with a display, the display is disposed on the outer side of the housing, the display is connected with the detection module, and the display is used for displaying the wavelength value.

In some embodiments of the present application, an angle between the light inlet of the integrating sphere and the light outlet of the integrating sphere is 90 degrees.

In some embodiments of the present application, the inner cavity of the integrating sphere is provided with a diffuse reflection layer.

In certain embodiments of the present application, the diffuse reflective layer is foamed from polytetrafluoroethylene material.

In certain embodiments of the present application, the laser light collection module further comprises a mounting bar through which the integrating sphere is connected to the housing.

In certain embodiments of the present application, the mounting bar is provided with a channel for the passage of an optical fiber.

In some embodiments of the present application, the integrating sphere is fixed to the mounting rod by a screw or a magnet.

In some embodiments of the present application, the detection module includes a focusing lens, a grating, and a photodetector that are sequentially disposed.

In certain embodiments of the present application, the grating is a diffraction grating provided with equidistant parallel scribe line structures.

The laser wavelength detector has at least the following beneficial effects: placing a laser to be detected on a flat platform plate of a laser placing platform, and then adjusting a telescopic rod to enable laser generated by the laser to be emitted to an optical inlet of an integrating sphere of a laser collecting module on the laser placing platform, wherein the laser generated by the laser enters the integrating sphere from the optical inlet of the integrating sphere, and the laser is diffusely reflected for many times by the integrating sphere so as to collect the laser through the integrating sphere; the laser after diffuse reflection leaves from the light outlet of the integrating sphere and enters the detection module through the optical fiber and the laser inlet of the detection module; and the detection module is used for detecting the wavelength of the laser from the laser collection module to obtain a wavelength value. The laser is placed on the platform plate, so that laser generated by the laser can accurately irradiate to the light inlet of the integrating sphere, and laser deviation is avoided; meanwhile, the laser is placed stably through the flat platform plate, so that the laser can be prevented from vibrating. The laser wavelength detector has the advantages of simple structure and convenience in carrying, and integrates the laser placing platform, the laser collecting module and the detection module on the small-sized shell.

Drawings

The accompanying drawings are included to provide a further understanding of the technical aspects of the present application, and are incorporated in and constitute a part of this specification, illustrate the technical aspects of the present application and together with the examples of the present application, and not constitute a limitation of the technical aspects of the present application.

FIG. 1 is a block diagram of a laser wavelength detector provided by an embodiment of the present application;

fig. 2 is an exploded view of a laser light collection module provided by an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. The terms first, second and the like in the description, in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Embodiments of the present application are further described below with reference to the accompanying drawings.

In certain embodiments of the present application, a laser wavelength detector is provided.

Referring to fig. 1 and 2, the laser wavelength detector includes a housing 100, a laser placement platform 200, a laser collection module 300, and a detection module.

The laser placing platform 200 comprises a telescopic rod 220 and a platform plate 210, wherein the platform plate 210 is connected with the outer side of the shell 100 through the telescopic rod 220; the laser collection module 300 is arranged beside the laser placing platform 200, the laser collection module 300 comprises an integrating sphere 310, and an light inlet 311 of the integrating sphere 310 faces the laser placing platform 200; the laser inlet of the detection module is connected with the light outlet 312 of the integrating sphere 310 through an optical fiber, and the detection module is used for detecting the wavelength of the laser from the laser collection module 300 to obtain a wavelength value.

In this embodiment, a laser to be detected is placed on the flat platform board 210 of the laser placement platform 200, and then the telescopic rod 220 is adjusted, so that laser generated by the laser on the laser placement platform 200 is emitted to the light inlet 311 of the integrating sphere 310 of the laser collection module 300, the laser generated by the laser enters the integrating sphere 310 from the light inlet 311 of the integrating sphere 310, and the laser is diffusely reflected for many times by the integrating sphere 310, so that the collection of the laser is realized by the integrating sphere 310; the laser after diffuse reflection leaves from the light outlet 312 of the integrating sphere 310 and enters the detection module through the optical fiber and the laser inlet of the detection module; the detection module performs wavelength detection on the laser light from the laser light collection module 300 to obtain a wavelength value.

The laser is placed on the platform plate 210, so that laser generated by the laser can be accurately emitted to the light inlet 311 of the integrating sphere 310, and laser deviation is avoided; at the same time, the laser is stably placed by the flat platform plate 210, and laser oscillation can be avoided.

The laser wavelength detector has the advantages of simple structure and convenience in carrying, and integrates the laser placing platform 200, the laser collecting module 300 and the detection module on the small-sized shell 100.

It will be appreciated that the telescoping pole 220 may be a manually operated telescoping pole 220 or an electrically operated telescoping pole 220.

In some embodiments of the present application, the inner cavity of integrating sphere 310 is provided with a diffuse reflective layer. Specifically, the diffuse reflection layer is formed by foaming polytetrafluoroethylene materials.

In this embodiment, the laser light generated by the laser enters the integrating sphere 310 from the light inlet 311 of the integrating sphere 310, and the laser light is diffusely reflected multiple times by the diffusely reflecting layer of the integrating sphere 310, so that the collection of the laser light is realized by the integrating sphere 310.

The diffuse reflection layer made of polytetrafluoroethylene material can prevent laser from being absorbed.

In some embodiments of the present application, the diffusely reflected laser light exits from the light outlet 312 of the integrating sphere 310, and the angle between the light inlet 311 of the integrating sphere 310 and the light outlet 312 of the integrating sphere 310 is 90 degrees.

In certain embodiments of the present application, the laser light collection module 300 further includes a mounting bar 320, and the integrating sphere 310 is disposed on the mounting bar 320. The integrating sphere 310 can be fixed by the mounting bar 320.

Further, integrating sphere 310 is fixed to mounting rod 320 by a screw, or integrating sphere 310 is magnetically connected to mounting rod 320 by a magnet.

In some embodiments of the present application, the mounting rod 320 is provided with a channel 321, i.e. the mounting rod 320 is hollow, and the channel 321 is for the optical fiber to pass through, so that the optical fiber is connected with the detection module.

In addition, the length of the optical fiber is longer than the mounting bar 320, which allows the integrating sphere 310 and the optical fiber to be separated from the holder, which facilitates the acquisition of laser signals from different angles in different scenarios.

Specifically, the photodetector is a CCD detector.

The laser enters from the laser inlet and irradiates to the focusing lens, and the laser is focused by the focusing lens and then is applied to the grating, and the grating decomposes the complex-color light into monochromatic light. The grating is a diffraction grating, can realize the working range of the whole wave band of 180nm to 1100nm, has a wide spectrum range, enables the amplitude and the phase of incident light to be subjected to periodic spatial modulation through a dense equidistant parallel reticle structure, and disperses the light beam emitted onto the grating according to different wavelengths by utilizing multi-slit diffraction and interference effects. The grating is fixed and not scanned, so that the stability and the rapid test of the optical system are ensured. The decomposed monochromatic light is focused on a photoelectric detector, and the photoelectric detector converts the optical signal into an electric signal.

In some embodiments of the present application, the laser wavelength detector is further provided with a display 110, the display 110 is disposed outside the housing 100 and is disposed obliquely, the display 110 is connected to the detection module, and the wavelength value is displayed by the display 110. The wavelength value is graphically displayed, so that a user can conveniently read the wavelength value.

The electrical signal output by the photodetector is transmitted to the display 110 through a USB cable or other data transmission line, and the display 110 displays the wavelength value through text and images.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the examples and their equivalents.

While the preferred embodiments of the present application have been described in detail, the present application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application.

Claims

1. A laser wavelength detector, comprising:

a housing;

2. The laser wavelength detector as claimed in claim 1, further comprising a display, the display being disposed outside the housing, the display being coupled to the detection module, the display being configured to display the wavelength value.

3. The laser wavelength detector of claim 1, wherein the angle between the light entrance of the integrating sphere and the light exit of the integrating sphere is 90 degrees.

4. The laser wavelength detector as claimed in claim 1, wherein the integrating sphere has a diffuse reflecting layer in its cavity.

5. The laser wavelength detector as claimed in claim 4, wherein the diffuse reflecting layer is formed by foaming polytetrafluoroethylene material.

6. The laser wavelength detector of claim 1, wherein the laser light collection module further comprises a mounting bar, the integrating sphere being coupled to the housing by the mounting bar.

7. The laser wavelength detector as claimed in claim 6, wherein the mounting bar is provided with a channel for the passage of an optical fiber.

8. The laser wavelength detector as claimed in claim 6, wherein the integrating sphere is fixed to the mounting rod by a screw or a magnet.

9. The laser wavelength detector of claim 1, wherein the detection module comprises a focusing lens, a grating, and a photodetector arranged in sequence.

10. The laser wavelength detector as claimed in claim 9, wherein the grating is a diffraction grating provided with equidistant parallel scribe line structures.