infrared led 850nm high power led diode
customer benefit of High Power IRED
− Highly-efficient IR Thinfilm emitters up to 1 mm2 size
− High optical output power up to 2 W / device
− High electro-optical efficiency up to 48 percent
− Excellent thermal properties (Rth)
− Reflow soldering in standard SMT technology
− Single- and dual junction (stack) chips
− Compact dimensions for narrow clustering
− Various package, power, wavelengths and beam angle options
− Same packages available with visible LEDs
Product Features:
Product Application:
An infrared light-emitting diode (LED) is not used to light up screens and monitors the way other LEDs are; instead, it is often used for non-visual applications and for nighttime illumination. The application of an infrared LED depends on its nanometers (nm), or its wavelength, with the common usage being between 808nm and 940nm. Infrared LED devices are used in everyday life in TV remote controllers and automated card readers. The use of infrared LEDs can be separated into two types: direct and reflecting, and the manner in which the infrared LED and the receiving diode interact determines the LED's uses.
At the lower end of the infrared frequency, 808nm, infrared LEDs are commonly used in non-visual applications but also are found in security cameras. Solid-state lasers and medical lasers and appliances function with this infrared frequency. Infrared illumination also is possible here, allowing security cameras to function at night without light, though the image they capture is usually low-resolution. At 830nm, this infrared light is used for automated card readers at subways and hotels.
Between 840nm and 870nm, infrared LEDs are found more commonly in visual applications. These LEDs are used in waterproof cameras and in both daytime and nighttime security cameras at stores and crossroads. The non-visual application at this wavelength is mostly seen in silent alarm systems and door phones.
The highest infrared LED signal, 940nm, is the one consumers most often use. This is the LED responsible for the functionality of remote controls, including those used with televisions and digital video disc (DVD) players. Wireless game controllers also belong on this list. Any appliance that uses a remote control with infrared technology uses this LED signal.
To get an infrared LED to work, one of two control methods must be employed. Direct light has the emitting LED in the control device, and the receiving diode in the receiving device, and the emitting device does not need to point directly at the receiving device. This method is the modern method; it is more convenient to use, because the user does not have to directly point the controller at the appliance.
An Infrared light-emitting diode (IR LED) is a special purpose LED emitting infrared rays ranging from 700 nm to 1 mm wavelength. Different IR LEDs may produce infrared light of differing wavelengths, just like different LEDs produce light of different colors
IR LEDs are usually made of gallium arsenide or aluminium gallium arsenide. In complement with IR receivers, these are commonly used as sensors.
The appearance of IR LED is same as a common LED. Since the human eye cannot see the infrared radiations, it is not possible for a person to identify if an IR LED is working. A camera on a cell phone camera solves this problem. The IR rays from the IR LED in the circuit are shown in the camera.
An IR LED is a type of diode or simple semiconductor. Electric current is allowed to flow in only one direction in diodes. As the current flows, electrons fall from one part of the diode into holes on another part. In order to fall into these holes, the electrons must shed energy in the form of photons, which produce light.
It is necessary to modulate the emission from IR diode to use it in electronic application to prevent spurious triggering. Modulation makes the signal from IR LED stand out above the noise. Infrared diodes have a package that is opaque to visible light but transparent to infrared. The massive use of IR LEDs in remote controls and safety alarm systems has drastically reduced the pricing of IR diodes in the market.
Package Dimension
Datasheet:
infrared led 850nm high power led diode datasheet can be download from this page.
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