We all know that laser diodes have many applications, so do you know where laser diodes can be mainly used? What are the applications of Korean QSI laser diode in displacement sensor?

First, the main application fields of laser diodes

Laser diodes are widely used in the following directions because of their small size, high energy efficiency, fast response and easy integration:

1. Communication and information transmission

Optical fiber communication is the core of modern communication, and laser diode is the main light source of optical fiber transmission. It is characterized by stable wavelength, fast modulation speed and good beam quality, and can realize large-capacity and long-distance data transmission.

2. Industrial processing and testing

In the industrial field, laser diodes are often used for laser marking, laser cutting, material surface treatment and so on. At the same time, they are also widely used in detection equipment, such as laser rangefinder, laser displacement sensor, barcode scanner and so on, to help achieve high-precision detection and positioning.

3. Medical treatment and beauty

Laser diode is mainly used in laser therapy, surgical cutting, skin repair, dental treatment and other fields in medical treatment. Its energy output is stable and controllable, and it can achieve minimally invasive and safe treatment effect.

4. Security and sensing

Laser diode is often used in laser night vision device, infrared light supplement and various automatic sensors in monitoring system, such as smoke detection, security alarm and so on.

5. Consumer electronics and everyday applications

Low-power models of laser diodes are often used in laser pens, laser projection, optical drives (CD/DVD/ Blu-ray headsets) and so on. With the development of AR/VR technology, laser diodes have gradually entered intelligent display and wearable devices.

Second, the relationship between displacement sensor and laser diode

Displacement sensor is a kind of high-precision measuring instrument, which is used to detect the displacement, thickness, vibration or position change of an object. The traditional displacement sensor may rely on the principles of resistance, capacitance and inductance, while the laser displacement sensor measures the precise displacement of the measured object through the reflection and reception of the laser beam.

Laser displacement sensor usually consists of laser light source, optical lens, receiving device and signal processing circuit, among which laser diode is the most critical light source.

Its working principle is roughly as follows:

The lase diode emits a beam of collimate light to irradiate that target object;

The reflected light is focused on the photodetector through the lens;

Through the change of spot position or the difference of reflection time, the sensor can calculate the displacement or position change of the object.

Compared with traditional methods, laser diode has the advantages of high precision, non-contact and strong adaptability in displacement sensor, which is very suitable for measuring in complex environment.

Third, the application advantages of Korean QSI laser diode in displacement sensor

As a world-renowned supplier of laser diodes, QSI's products in Korea show the following significant advantages in the application of displacement sensors:

1. The wavelength selection is rich, and it is suitable for different measurement environments.

QSI provides products with multiple wavelengths from visible light (red light 635nm, 650nm and 680nm) to near infrared light (780nm, 808nm, 850nm, 940nm, etc.).

Red laser diode: suitable for short-distance and high-visibility displacement measurement, and often used in factory automation detection.

Near-infrared laser diode: with stronger transmission ability, it is suitable for use in complex lighting or dusty environment.

2. High beam quality and better measurement accuracy.

QSI laser diode has good beam collimation and low divergence angle, which ensures the stability of light spot and can improve the resolution and repeatability of displacement sensor.

3. Strong stability and long service life

Displacement sensors usually need to run continuously for a long time. QSI laser diodes have good stability and reliability under complex environments such as high temperature and high humidity through strict aging screening process.

4. Easy to integrate and support modularization.

QSI provides a variety of standard packages (TO-18, TO-56, TO-9, etc.), which is convenient for direct integration into the displacement sensor module. At the same time, it can also be customized according to customer needs and support OEM/ODM.

5. High cost performance, supporting large-scale application.

Compared with some European and American manufacturers, QSI laser diode has higher cost performance under the premise of ensuring performance, and is suitable for large-scale assembly in industrial sensors and automatic detection equipment.

The displacement sensor based on QSI laser diode can be used in many industries:

1. Industrial manufacturing: measuring the thickness of workpiece, monitoring the accuracy of mechanical movement and automatic assembly line inspection.

2. Electronic industry: detect the thickness of semiconductor wafer, the warpage of PCB and the position deviation of components.

3. Automobile industry: used for displacement detection in automatic driving test and assembly accuracy monitoring of automobile parts.

4. Scientific research experiment: high-precision displacement experimental measurement and material deformation test.

As an important basic device of modern optoelectronic technology, laser diode has penetrated into many fields such as communication, medical treatment, industry, consumer electronics and so on. In the application of displacement sensor, laser diode plays the role of "core light source".

Korean QSI laser diode has become an important choice for displacement sensor manufacturers because of its rich wavelength, excellent beam quality, strong stability and high cost performance. In the future, with the rapid development of industrial automation and intelligent detection, QSI laser diode will play a greater role in the displacement sensor market and provide strong support for industrial upgrading and intelligent manufacturing.