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    Page 128 - Catalog auto parts lighting technology BOSCH for cars and trucks
    P. 128
    Spare parts cross-references

    AUTO PARTS

    Catalog

    Auto Parts / A126  |  Automotive bulbs
    
    
            Basic lighting-technology terms
    
    
    
    
    
    
    
    
                                       “DIN 5033 standard table”
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
            Below, we outline some of the basic   Luminous flux                   Luminance
              principles of lighting technology, the “tool”   Luminous flux is the term used for the total   The luminance of a light source or an
            used to create light.              radiant power emitted by the light source   illuminated surface is a measure of the
                                               in the wavelength range of visible light,   “apparent brightness”. It is the luminous
            Light                                irrespective of the emission direction.   flux relative to a particular surface area.
            Light is propagated in the form of an   Unit: Lumen [lm].             The  human eye perceives differences in
              electromagnetic wave. The human eye can                             luminance as differences in brightness.
            only recognize a limited range (wavelength    Illumination            The brightness of a candle is approximately
            380 to 780 nm) of these waves as light   The illumination is the amount of light that    1 cd (Candela). Automotive bulbs are in the
            beams. The wavelength of the radiation   is beamed in a particular spatial direction.      magnitude of 10 cd for tail lamps, 100 cd for
              determines the color of the light, from violet   It is made up of the ratio of the luminous-  stop lamps, 200 cd for fog warning lamps
            (380 nm) to red (780 nm) with the inter-  flux component and the associated solid-   and more than 200,000 cd for headlamps.
            mediate colors blue, green, yellow and    angle component.            Unit: Candela per square meter [cd/m ].
                                                                                                              2
            orange, as can be seen in a rainbow.   Unit: Candela [cd].
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
            Bosch Automotive Aftermarket                                                                  2010  |  2011 / Auto Parts
    
    
    
                                    
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