Osram: Difference between revisions
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more description of banding after I graphed some values
(a little more about the differences between GD and GDP) |
(more description of banding after I graphed some values) |
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There are tint families for warm white (product code LCW, also includes neutral white tints), white (LW), and ultra white (LUW, others call it cool white). The warm white and ultra white families sometimes seem to follow [[ANSI White]] with each ANSI White quadrangle | There are tint families for warm white (product code LCW, also includes neutral white tints), white (LW), and ultra white (LUW, others call it cool white). The warm white and ultra white families sometimes seem to follow [[ANSI White]] with a number of subgrids overlaid on each ANSI White quadrangle and sometimes falling above or below the ANSI quadrangle. It doesn't seem to be their intention to bin by individual subgrid but by groups of subgrids. The grid has numbers which are vertical subdivisions (6500K is divided into layers 4, 5, 6, 7, and 8 with 4 falling below and 8 falling above ANSI 6500K) and letters which are horizontal (they follow the color temperatures; for instance, 6500K is divided into vertical bands C,D, and E while 5700K is divided into F and G, and no bands are cooler than ANSI 6500K) as follows: | ||
{|class="wikitable" style="text-align: center; width: 400px;" | {|class="wikitable" style="text-align: center; width: 400px;" | ||
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|4U-9X || 24 || 2700K || warm white | |4U-9X || 24 || 2700K || warm white | ||
|} | |} | ||
To make it a little more confusing, Osram has a different set of chromaticity groups that are not based on ANSI white but whose codes look very similar. These also appear in their datasheets. The regular white products only use this nonstandard approach. | |||