CN218647149U

CN218647149U - Dual-waveband laser illuminator

Info

Publication number: CN218647149U
Application number: CN202220120869.XU
Authority: CN
Inventors: 张建
Original assignee: Chengdu Xinwujieopto Technology Co ltd
Current assignee: Chengdu Xinwujieopto Technology Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2023-03-17
Anticipated expiration: 2032-01-17

Abstract

The utility model discloses a dual-band laser illuminator, which relates to the technical field of laser illuminators and solves the problem that the existing laser illuminator has great harm to eyes under the distance measurement function, and comprises a laser driving/control module, a solid laser, an OPO wavelength conversion module, a dual-wavelength laser beam expander, a distance measurement processing circuit, a movable structure and a receiving optical system; the solid laser and the distance measuring processing circuit are respectively connected to the laser driving/control module; the distance measurement processing circuit is also connected to the output end of the receiving optical system; the output end of the OPO wavelength conversion module is provided with a dual-wavelength laser beam expander; the OPO wavelength conversion module is arranged on the movable structure; the utility model has the advantages of high cost performance and reduced injury to eyes.

Description

Dual-waveband laser illuminator

Technical Field

The utility model relates to a laser illumination ware field, more specifically relate to two wave band laser illumination ware technical field.

Background

The laser illuminator is a laser guide device, and the laser ranging adopts a pulse mode to carry out ranging, and the simple working principle is as follows: after the tracking and aiming system locks the target, the laser illuminator is opened to emit a collimated laser beam with coded information to irradiate the target, the laser beam reflected by the target is received by the receiving device loaded on the projectile body to automatically calculate the deviation degree of the projectile body from the laser beam, the flight track is continuously modulated, and finally guidance is carried out.

The light source that traditional laser surveying ware was usually used is 1064nm laser, and laser surveying ware is usually used is the range finding function, and laser surveying ware can activate the function of shining under scenes such as target shooting, and laser can be refracted back by the target under the range finding mode, and 1064nm laser is very big to the injury of people's eye.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the problem of current laser illuminator harm eyes under the range finding function big is solved. In order to solve the technical problem, the utility model provides a dual band laser illumination ware.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

a dual-band laser illuminator comprises a laser driving/control module, a solid laser, an OPO wavelength conversion module, a dual-wavelength laser beam expander, a distance measurement processing circuit, a movable structure and a receiving optical system;

the solid laser and the distance measuring processing circuit are respectively connected to the laser driving/controlling module; the distance measurement processing circuit is also connected to the output end of the receiving optical system;

an OPO wavelength conversion module is arranged at the laser output end of the solid laser, and the dual-wavelength laser beam expander is arranged at the output end of the OPO wavelength conversion module; the OPO wavelength conversion module is disposed on the movable structure.

Preferably, the movable structure adopts a motor-driven translation stage, the OPO wavelength conversion module is mounted on the motor-driven translation stage, and the motor-driven translation stage is connected to the laser driving/controlling module.

Preferably, the solid-state laser is a semiconductor pump laser.

Preferably, the specification of the solid-state laser is a 1064nm laser.

Preferably, the specification of the OPO wavelength conversion module is 1064-1550 nm wavelength converter.

Preferably, the model of the laser driving/controlling module is SOM-TL6748F.

Preferably, the ranging processing circuit includes an amplifying circuit and a shaping circuit.

The beneficial effects of the utility model are as follows:

the utility model can realize the output of the laser with two wave bands by an OPO wavelength conversion module carried on the movable structure, so that the application range of the laser illuminator is larger, and the problem that the existing laser illuminator with single wave band is easy to hurt eyes in a distance measuring mode is overcome; meanwhile, compared with a double light source, the cost is saved, and the cost performance is high; the laser output of 1064 and 1550 specifications is realized, the lasers with two wavelengths can be respectively suitable for irradiation and distance measurement, and the usability is strong; the motor is adopted to drive the translation table to serve as a movable mechanism, so that the use is simple and convenient, and the cost performance is high; the semiconductor pump laser is used as a light source, and emitted laser is stable and accurate.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic diagram of the ranging mode;

fig. 3 is a schematic view of the principle in the illumination mode.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, the present embodiment provides a dual-band laser illuminator, including a laser driving/controlling module, a solid laser, an OPO wavelength conversion module, a dual-wavelength laser beam expander, a distance measuring processing circuit, a movable structure and a receiving optical system;

the solid laser and the ranging processing circuit are respectively connected to the laser driving/controlling module; the distance measurement processing circuit is also connected to the output end of the receiving optical system;

the laser output end of the solid laser is provided with an OPO wavelength conversion module, and the output end of the OPO wavelength conversion module is provided with the dual-wavelength laser beam expander; the OPO wavelength conversion module is disposed on the movable structure.

In this embodiment, the movable structure may adopt a motor-driven translation stage, the OPO wavelength conversion module is mounted on the motor-driven translation stage, and the motor-driven translation stage is connected to the laser driving/controlling module; the solid laser can adopt a semiconductor pump laser, the specification of the solid laser is a 1064nm laser, and in addition, the specification of the OPO wavelength conversion module is a 1064-1550 nm wavelength converter; the type of the laser driving/control module is preferably SOM-TL6748F; the ranging processing circuit may include an amplifying circuit and a shaping circuit. .

The working principle of the embodiment is as follows:

the OPO wavelength conversion module can be accessed or removed by operating the motor driving translation stage through the laser driving/control module.

Referring to fig. 2, when the OPO wavelength conversion module is accessed, the OPO wavelength conversion module realizes wavelength conversion, the dual-band laser imager outputs laser after wavelength conversion, and then the dual-band laser imager is in a distance measurement mode, in the distance measurement mode, the laser driving/control module drives the solid laser to emit 1064nm laser, the 1064nm laser is converted into 1550nm laser through the OPO wavelength conversion module, and then is output to a target through the dual-wavelength laser beam expander, the dual-wavelength laser beam expander has the function of compressing a divergence angle output by the laser to increase an action distance, generally, a divergence angle of the laser which is output to the dual-wavelength laser beam expander at first is 2-3mrad, and the divergence angle is reduced to be below 0.5mrad after being compressed by the dual-wavelength laser beam expander;

meanwhile, a receiving optical system receives laser reflected by a target and realizes photoelectric conversion, an optical signal is converted into an electric signal, the electric signal belongs to a weak electric signal, then the electric signal is sent to a ranging processing circuit for ranging processing, an amplifying circuit and a shaping circuit in the ranging processing circuit amplify and shape the obtained weak electric signal into a standard TTL echo signal, and finally the TTL echo signal is sent to a laser driving/control module for distance settlement, so that the ranging function in a ranging mode is realized. Performing ranging using a 1550nm laser reduces the damage to the human eye by the laser.

Referring to fig. 3, when the OPO wavelength conversion module is removed, the OPO wavelength conversion module does not perform wavelength conversion, the two-band laser illuminator outputs laser output by the solid laser, and is in an illumination mode at this time, and in the illumination mode, the laser driving/control module drives the solid laser to emit 1064nm laser, and the 1064nm laser is directly output by the two-wavelength laser beam expander to be emitted to a target, so that the function of illuminating the target is realized.

The embodiment has the advantages that the two-waveband laser is realized by one light source, the distance measurement and irradiation functions can be realized, the damage of the laser to human eyes is reduced, and the cost performance is high.

Claims

1. A dual-band laser illuminator is characterized by comprising a laser driving/controlling module, a solid laser, an OPO wavelength conversion module, a dual-wavelength laser beam expander, a distance measuring processing circuit, a movable structure and a receiving optical system;

2. The dual band laser illuminator of claim 1, wherein the movable structure employs a motor driven translation stage, the OPO wavelength conversion module being mounted on the motor driven translation stage, the motor driven translation stage being connected to the laser drive/control module.

3. The dual band laser illuminator of claim 1, wherein the solid state laser is a semiconductor pumped laser.

4. The dual band laser illuminator of claim 1, wherein the solid state laser is a 1064nm laser.

5. The dual band laser illuminator of claim 4, wherein the OPO wavelength conversion module is a 1064-1550 nm wavelength converter.

6. The dual band laser illuminator of claim 1, wherein the laser driver/control module is model SOM-TL6748F.

7. The dual band laser illuminator of claim 1, in which the range processing circuitry comprises amplification circuitry and shaping circuitry.