The Characteristics of LED Infrared Lamp Beads

1. The characteristics of LED infrared lamp beads: Conventional LED infrared lamp beads are similar to the appearance of general visible light LED lamp beads, but the infrared rays are issued. Its working voltage is generally 1.4V, and the working current is generally less than 20mA. In order to adapt to different working voltages, constant string limited flow resistance in the circuit. When using LED infrared lamp beads to control the controlled device, its control distance is proportional to the launch power. In order to increase the control distance of infrared rays, the infrared launch tubes (LED infrared lamp beads) work in the state of the pulse. Because the effective transmission distance of the pulse light is proportional to the veins of the pulse. The launch distance. The method of enhancing IP is to reduce the pulse duty ratio, that is, the total width T of the pulse, reducing the pulse occupation ratio can also increase the launch distance of the low -power infrared glow diodes. The general infrared light emitting diode is divided into three categories: small power, medium power and high power. To make the infrared light -emitting diode generated, just add a certain frequency pulse voltage to the driver. When infrared light -emitting diodes emit infrared control equipment, the controlled equipment has corresponding infrared photoelectric conversion components, such as infrared receiving diode, infrared receiving head, light -sensitive triode, etc. There are two methods for infrared launch and receiving, namely direct and reflected. Direct refers to the relative ends of the transmission and controlling objects from the transmission diode and the receiving diode and the receiving diode, which is a certain distance from each other; the reflection refers to the parallel of the diode and the receiving diode. When encountering a reflex, receive the diode only when I receive the infrared of the reflection. Second, according to the characteristics of LED infrared lamp beads, according to different wavelengths to obtain a wider range of applications: 1. Wavelength: 808nm, applicable medical equipment, space light communication, infrared lighting lamps, solid laser pump lamps; Wavelength: 830nm, suitable for high -speed high -speed card swiping systems; 3. Wavelength: 840nm, applicable to monitoring cameras, color transformed into infrared waterproof; 4. Wavelength: 850nm, applicable to monitoring cameras, digital shooting, monitoring, Louyu intercom, anti -theft, anti -theft Alarm, infrared waterproof; 5, wavelength: 870nm, suitable for monitoring cameras at large shopping malls and crossroads; 6. Palace: 940nm, suitable controller, such as the controller of household appliances products.