A lighting-emitting diode (LED) is a semiconductor device that emits incoherent narrow-spectrum light when electrically biased in the forward direction of p-n junction. The color of the emitted light depends on the composition and condition of the semiconducting material used, and can be infrared, visible, or near-ultraviolet.
Q:What is High Power LED?
A:
High Power LED refers to a type of LED with a driving current of 350mA and above. Edison Opto design and manufacture high power LED ranging from 1 Watt to 100 Watt.
Q:What is Bin Ranks?
A:
different bins (groups) based on their wavelength, photometric luminous flux, or radiometric power data. Bin ranks describe the specifications of the given bins.
Q:What is forward voltage (Vf)?
A:
Forward voltage (Vf) is the voltage across a diode for a given forward current.
Q:What is Lumens?
A:
Lumensin an international unit that refers to the amount of light that a light source produces. For example, a 60 Watt incandescent lamp provides about 800 lumens. A 1 Watt Edison Opto LED provides 85 lumens and up.
Q:What is phosphor?
A:
Phosphor is an inorganic chemical compound processed into a powder and deposited inside the dome of an LED packaging. Phosphors are designed to convert the wavelength of light. Edison Opto LEDs use proprietary phosphors from the global leading company.
Q:What is junction temperature?
A:
A p-n junction is formed by combing N-type and P-type semiconductors together in a very close contact. The term junction refers to the region where the two types of semiconductor meet. The junction temperature refers to the temperature measured at p-n junction, which is also the core of an LED.
Q:What is emission angle (2¦È?)?
A:
The emission angle refers to as the 2¦È? indicates how focused the light is when emitted from the LED. This angle is determined by measuring the angle from direct on-axis to the angle where light intensity falls to half of the on-axis intensity, and multiplying this difference by 2. The choice of viewing angle also affects the LED output intensity. Edison Opto LEDs are available in various emission angles.
Q:What is wavelength (¦Ëd)?
A:
ght could be split into many colors. The colors produced by light are arranged in a precise array or spectrum. The order of color is constant, and each color has a unique signature identifying its location in the spectrum. The signature of color is the wavelength of light.
Q:Why use LEDs for lighting?
A:
Long life time (50,000 to 100,000 hrs)
Highly energy efficient.
Environmentally friendly ¨C no hazardous materials.
No infrared or ultraviolet in beam output.
Cold start capable down to -40¡æ
Vivid saturated colors without filters.
Small form factors for improved design flexibility
