What is an infrared transmitter?
Infrared transmitter is a device that in the infrared range emits a beam of light, which is only slightly beyond the range of normal human vision, and includes wavelength of light longer than visible red light. Faches that include infrared technology stretch from secular, such as television remote control, exotic, such as night vision glasses used by the army. Many natural objects release their own spectrum of infrared radiation, including the human body, the sun and the earth. This creates sensors and optical detectors that operate in the infrared range of useful devices in astronomy, wireless telecommunications and medicine. This is because the infrared light is emitted by cooling objects in the dark and the wavelength of the light is so long that it is scattered quickly and tends to be absorbed anything near that generates heat. For this reasonThe extent and object must have an unlimited path to an infrared receiver because the light cannot pass through thick or dense structures such as walls or metal.
Infrared light is easily absorbed by all on its way and scatters quickly. Although it limits its use for long -range transmissions, it is ideal for short range sensors, such as Faucet controls in public toilets and air dryers, where the device is switched on when the hands are located in close proximity to the light beam and otherwise remain to save energy and water. TV remote controls have one of the longest capabilities for consumer infrared transmitter and can usually operate at a distance of 15 feet (4.6 meters) or more. The effective distance of infrared devices depends on the wavelength of the use of the light, with shorter wavelengths transmitting further. Infrared worldLO ranges from almost visible or almost infrared into a microwave or far infrared range of spectrum at 750 nanometers of 1 millimeter wavelength.
One of the important applications of infrared light is the design of a mobile infrared transmitter, which is installed in many emergency vehicles such as police cars, ambulances and fire trucks. The vehicle has an almost infrared transmitter with an efficient range of 1,500 feet (457 meters). The device allows the so -called pre -train of the transport signal, allowing emergency vehicles that are equipped with an infrared control of the receiver to change the automatic switchboard switching to their advantage when they move along the streets of the city. This has accelerated their progress towards emergency sites and has been using 55 of the 75 largest metropolitan areas since 2001 since 2001.