Light-emitting Diode - Applications


In general, all the LED products can be divided into two major parts, the public lighting and indoor lighting. LED uses fall into four major categories:

  • Visual signals where light goes more or less directly from the source to the human eye, to convey a message or meaning.
  • Illumination where light is reflected from objects to give visual response of these objects.
  • Measuring and interacting with processes involving no human vision.
  • Narrow band light sensors where LEDs operate in a reverse-bias mode and respond to incident light, instead of emitting light.

For more than 70 years, until the LED, practically all lighting was incandescent and fluorescent with the first fluorescent light only being commercially available after the 1939 World's Fair.

Read more about this topic:  Light-emitting Diode

Other articles related to "applications, application":

Building On OpenStep
... idea was to use OpenStep code as a basis for network-wide applications running across different platforms, as opposed to using CORBA or some other system ... Unlike OpenStep, which defined an operating system that applications would run in, under PDO the libraries were compiled into the application itself, creating a ... code (Objective-C and the libraries), PDO applications were nevertheless considerably smaller than similar CORBA solutions, typically about one-half to one-third the size ...
Photoresist Categories - Applications
... Microelectronics This application, mainly applied to silicon wafers/silicon integrated circuits is the most developed of the technologies and the most ...
X Servers - Limitations and Criticism - Network
... X servers (in a manner similar to GNU Screen in relation to terminals), and other applications and toolkits provide related facilities ... (mouse, keyboard, monitor) of a running application to be switched from one location to another without stopping and restarting the application ... This can be important in some applications, such as process monitoring and control ...
Biotechnology - Applications - Agriculture - Improved Taste, Texture or Appearance of Food
... The first genetically modified food product was a tomato which was transformed to delay its ripening ... Researchers in Indonesia, Malaysia, Thailand, Philippines and Vietnam are currently working on delayed-ripening papaya in collaboration with the University of Nottingham and Zeneca ...
Transistor - Comparison With Vacuum Tubes - Advantages
... allowed transistors to replace their vacuum tube predecessors in most applications are Small size and minimal weight, allowing the development of miniaturized electronic devices ... Lower possible operating voltages, making transistors suitable for small, battery-powered applications ... for cathode heaters required after power application ...