Therefore, the spectrum of a general LED has more than two peaks, and the relative radiation intensity of other wavelength ranges is very low. LED light spectrum: At present, most of the LEDs are excited by a blue chip to excite one or more phosphors, and finally the light emitted by the blue and phosphors is mixed to form white light. The spectrum of a fluorescent lamp is a linear spectrum, and its linear spectrum is distributed on a continuous spectrum. The color of the emitted light is controlled by the proportion of phosphorous components. Spectral Analysis of LED Lamps and Fluorescent Lampsįluorescent lamp spectrum: The luminescence of fluorescent lamp is the discharge of the lamp filament to cause mercury vapor to emit ultraviolet rays, which stimulates the phosphorous fluorescent paint on the inner surface to release visible light of lower wavelength. Through the comparison of the LED spectra of normal white, natural white and warm white, we will find that the lower the color temperature, the more long-band spectrum. This is the reason why the yellow light has higher penetrability than white light. This is actually because different lights have different spectral wavelengths, and the attenuation of short-wavelength light in the air is much greater than that of long-wavelength light.įrom the knowledge of light dispersion, we know that the larger the wavelength, the smaller the frequency, so the propagation distance is limited. Practice has shown that different lights have different penetrability in the air.
The physical properties of light include spectrum, color temperature, brightness (intensity) and light attenuation. The light emitted by the incandescent lamp has ultraviolet light and infrared light other than 360-830NM, The light emitted by the fluorescent tube has ultraviolet light below 360NM, The wavelength of visible light is in the range of 360-830NM, and the wavelength of the LED light is all within the range of visible light. The wavelength range of white LED is: 450-460nmĬomparison of spectra of various light sources. What is the Wavelength Range of Common white LED Light Sources? It is foreseeable that in the near future, white LEDs will enter the home to replace the existing lighting. my country’s urban traffic management lights are also replacing early traffic order indicators with white LEDs. Streets in many countries have used white LEDs as street lights for decades. The German Hella company uses white LEDs to develop aircraft reading lights. Both of these methods have successfully produced white light.
White light LEDs are usually formed by two methods, the first is to use “blue technology” and phosphors to form white light, and the second is to mix multiple monochromatic lights.
LED WARM LIGHT RANGE INSTALL
Function, finally install the shell, so the seismic performance of the LED lamp is very good. The LED light source is a piece of electroluminescent semiconductor material chip, which is cured on the bracket with silver glue or white glue, and then connects the chip and the circuit board with silver or gold wire, and is sealed with epoxy resin to protect the inner core wire.
What is the Wavelength Range of Common white LED Light Sources?.
0 kommentar(er)
