Parameter analysis of infrared led strip

in generally the photoelectric parameters of Infrared led strip have the following categories: According to the peak wavelength (P): 870nm, 880nm, 850nm, 940nm, 980nm.

compare them with price as follow：850nm> 880nm> 940nm,

use most is 850nm ir led  strip and 940nm ir led  strip on the led market . because 850nm has high emission power and irradiation distance is far.

so is mainly used for infrared monitoring equipment; and 940nm is mainly used for infrared remote control ，Agriculture and Industry Application,
Peak wavelength: λp (lambda P unit: nm)
light emitters or object measured the energy distribution on the spectrometer,the wavelength corresponding to the peak position, called the peak wavelength (λp). Infrared led strip of optical parameters

Radiation intensity: Power (unit: W, W/sr, W/cm2) is used to indicate the magnitude of  infrared light led strip energy(IR led strip).
Radiation intensity (Power) is proportional to the input current (If).
The emission distance is proportional to the radiation intensity (Power).W/sr: the unit of the infrared radiation intensity,magnitude of the optical power emitted by Solid angle (sr)of IR emitting infrared ray light.  W/cm2: unit of illumination,
magnitude of the radiation power received by the IR unit area (cm2) of the sensor unit area. Angle of up and down or left and right sides of the clip called half-power angle