Emission Spectrum Measurement for LED Lamp by the UV-2600 UV-VIS Spectrophotometer

Introduction

A variety of light sources used for general illumination, including incandescent bulbs, fluorescent lights, and light-emitting diode bulbs (LED bulb, below) are currently available on the market. Light bulbs are also available in many colors, including warm white, natural white color and cool white, and are being used in accordance with the specific living environment. The brightness and color of the illuminating light is determined by the sum of all the monochromatic radiation emitted from the light source. The spectrum obtained from measurement of the intensity of each wavelength of radiated light is called an emission spectrum, and when the emitted colors differ depending on the light source, those emission spectra will also differ. Therefore, it can be assumed that during development of a new light source for general illumination, examination of the emission spectrum generated is extremely important. We conducted measurement of the emission spectra of several LED bulbs using the UV-2600 ultraviolet visible spectrophotometer, and report on their spectrum profiles and light distributions.

June 26, 2012 GMT