Infrared emitter tube, also known as infrared diode, is a key component in the field of infrared technology. As the name suggests, it emits infrared radiation. With the rapid development of infrared technology, infrared emitter tubes have found wide applications in various fields such as automotive, medical, security, and consumer electronics. This article will introduce the basic knowledge of infrared emitter tubes, their working principles, types, applications, and market trends.

Introduction to Infrared Emitter Tube

Infrared emitter tube is a semiconductor device that can emit infrared radiation. It is usually made of gallium arsenide (GaAs), gallium phosphide (GaP), or other III-V compound semiconductors. When the forward bias voltage is applied to the device, electrons and holes recombine in the active region, releasing energy in the form of infrared radiation. The emitted infrared radiation has a wide range of wavelengths, generally between 0.8μm and 3μm.

Working Principle of Infrared Emitter Tube

The working principle of infrared emitter tube is based on the photoelectric effect. When the forward bias voltage is applied to the device, electrons and holes are injected into the active region. Due to the difference in energy levels between the conduction band and the valence band, the electrons and holes recombine, releasing energy in the form of infrared radiation. The energy released is determined by the difference in energy levels between the conduction band and the valence band, which is related to the bandgap of the semiconductor material.

Types of Infrared Emitter Tubes

According to the different wavelengths of emitted infrared radiation, infrared emitter tubes can be divided into three types: near-infrared, mid-infrared, and far-infrared. Near-infrared emitter tubes have a wavelength range of 0.8μm to 1.7μm, which are commonly used in optical communication, remote control, and photoelectric code scanning. Mid-infrared emitter tubes have a wavelength range of 1.7μm to 3μm, mainly used in gas sensing, temperature measurement, and night vision. Far-infrared emitter tubes have a wavelength range of 3μm to 100μm, which are mainly used in thermal imaging, infrared heating, and infrared communication.

Applications of Infrared Emitter Tube

Infrared emitter tubes have a wide range of applications due to their excellent performance and low cost. The following are some typical applications:

• Automotive Industry: Infrared emitter tubes are used in automotive rearview mirrors, car burglar alarms, and vehicle reversing sensors.
• Medical Field: They are used in medical devices such as infrared thermometers, infrared blood oxygen meters, and infrared endoscopes.
• Security Industry: Infrared emitter tubes are used in surveillance cameras, motion sensors, and infrared barriers.
• Consumer Electronics: They are used in remote controls, infrared earphones, and infrared communication devices.

Market Trends of Infrared Emitter Tube

With the continuous development of infrared technology, the market demand for infrared emitter tubes is increasing. The following are some market trends:

• Miniaturization and High Integration: The demand for miniaturized and high-integrated infrared emitter tubes is growing, which can improve the performance and reduce the cost of products.
• Green and Energy-saving: As environmental protection and energy-saving become increasingly important, the demand for green and energy-saving infrared emitter tubes is also increasing.
• Customization and Application Innovation: With the development of various industries, the application of infrared emitter tubes is becoming more diversified, and the demand for customized products is also increasing.

Conclusion

Infrared emitter tube is an essential component in the field of infrared technology. With the continuous development of infrared technology, its applications will become more extensive and diverse. As the market demand for infrared emitter tubes increases, the industry will continue to innovate and develop, bringing more convenience and benefits to people's lives.