Introduction

Infrared LED light, also known as infrared diode, is a type of light emitting diode that emits infrared light. As a high-tech product, it has been widely used in various fields such as security, communication, medical, and consumer electronics. In recent years, with the continuous development of technology, the application of infrared LED light has been further expanded, and its market demand has been increasing year by year.

Basic Principles of Infrared LED Light

Infrared LED light is a semiconductor device. It is made of a semiconductor material, usually gallium arsenide (GaAs) or gallium phosphide (GaP), and has a p-n junction structure. When a forward voltage is applied to the p-n junction, electrons and holes are recombined, and infrared light is emitted during the recombination process.

The principle of infrared LED light is based on the energy band structure of the semiconductor material. The energy band structure is a series of energy levels, including the valence band and the conduction band. When the forward voltage is applied, the electrons in the valence band gain energy and jump to the conduction band, leaving behind a positive ion. The holes in the valence band move to the conduction band, leaving behind a negative ion. The recombination of electrons and holes in the conduction band will emit photons, and the energy of these photons is determined by the energy difference between the valence band and the conduction band.

Types of Infrared LED Light

Infrared LED light can be divided into two categories according to the wavelength: near-infrared LED light and far-infrared LED light.

1. Near-infrared LED light: The wavelength of near-infrared LED light is between 780nm and 1400nm. It is often used in remote control, biometric identification, and other fields.

2. Far-infrared LED light: The wavelength of far-infrared LED light is between 1400nm and 3000nm. It is mainly used in infrared heating, infrared communication, and other fields.

Application of Infrared LED Light

Infrared LED light has a wide range of applications, and the following are some typical applications:

1. Remote control: Infrared LED light is widely used in remote control devices such as TVs, air conditioners, and projectors. It can send and receive signals over a short distance, making it convenient for users to control these devices.

2. Biometric identification: Infrared LED light can be used to capture the unique features of a person’s fingerprint, face, or iris. This technology is widely used in access control, security, and other fields.

3. Infrared heating: Far-infrared LED light has strong heat radiation, and can be used for infrared heating. It is widely used in home appliances such as infrared saunas, infrared cookers, and infrared lamps.

4. Infrared communication: Infrared LED light can be used for infrared communication between devices. It is widely used in wireless communication, remote control, and other fields.

5. Medical field: Infrared LED light has a certain therapeutic effect on the human body, and can be used for physical therapy, wound healing, and other treatments.

Development Trend of Infrared LED Light Industry

With the continuous development of technology, the infrared LED light industry is facing the following development trends:

1. Miniaturization and high-intensity: In order to meet the requirements of various applications, the size and intensity of infrared LED light will continue to be optimized.

2. Energy-saving and environmental protection: The development of energy-saving and environmentally friendly infrared LED light is an important direction for the industry.

3. Integration and diversification: Infrared LED light will be integrated with other technologies and applied in more fields.

4. Market competition and innovation: The market competition in the infrared LED light industry will become more intense, and innovation will be the key to the survival and development of enterprises.

In conclusion, infrared LED light is a high-tech product with broad application prospects. With the continuous development of technology and market demand, the infrared LED light industry will have a bright future.

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