Solar lighting factory and led street lamp lighting common optical indicator - —

With the increasingly widespread use of solar street lights and led street lamps, how to measure the pros and cons of solar street lights and led street lamp to become our customers need to know the problem, the author (some of the relevant index to the solar street light and led street lamp light source, optical, written up in this, throw the

as the solar street lights and led street lamp is becoming more and more widely used, how to measure the advantages and disadvantages of solar street lights and led street lamp has become our customers urgently need to know about the problem. The author compiled some optical index and led street lights, solar street lamps and published here, only for reference. Today with the introduction of the luminous intensity, luminous intensity abbreviation for light intensity, it is a basic measure of point source of luminous intensity. It is formed by point source of light in a certain direction indicating the luminous intensity, namely the amount of light emitted at a luminary in unit time, also known as the luminosity. It is through the point light source in the Angle of three dimensional elements measured along the luminous flux from the specified direction. The international unit ( Also commonly used) Is the candela ( Candira) - CDS, and other units have candles and lamps. 1 CD, namely 1000 MCD 'refers to a monochromatic light source, 540 x 1012 hz frequency and wavelength of 0. 550 microns) The luminous intensity of emitted per unit solid Angle in a given direction, The direction of radiation intensity is ( 1/683) Watts/sphericity) 。 The international standard candle ( lcd) : in the platinum freezing point temperature ( 1769℃) Luminosity, the ideal black body, in a direction perpendicular to the blackbody is 1/600000 ( The surface area of 1 m2) 。 Ideal blackbody refers to the emission rate is equal to 1 of the object, the object can absorb energy radiation completely out, keeping temperature is fixed. International standard candela and old candela is the interchangeable relationship between 1 1 candela = 0. 981 candela