给个英文的.个人理解可能会有点出入.基本上是这个意思. QjqBO+ L2d:.&5 A candela plot is a plot of luminous intensity, or flux per solid angle. In photometric "'~|}x1Uv units, a luminous intensity plot is in units of candelas (lumens per steradian). In DQMPAj. radiometric units, an intensity plot is in units of watts per steradian. Candela plots SF"#\{cjj are commonly used in the design of illumination systems, especially those used in 7|K3WuLL the far field. k*OvcYL1A Candela data can be collected from ray sets of Missed rays, rays Exiting a surface 2Gm-\o&Td" or rays Incident on a surface. Missed rays are a collection of all rays that “leave” b h*^{ the model and “go off to infinity.” Exiting rays are the collection of ray segments 76$*1jB following the intersection point of a ray at a surface. Due to ray splitting, several <_>.!9q ray segments may contribute to the candela data for each incident ray. Incident wLpkUa rays are the collection of ray segments which intersect the selected surface. No 8,_ -0_^$ surface selection is required for Missed rays but one is necessary for Exiting and wy YtpW Incident rays. _/ct= The candela plots represent flux versus angle and can be smoothed using the E*OG-r Candela Options dialog box. The iso-candela plots can be presented as false ))p$vU3 color maps or contour plots. The distribution plots are graphs of cross-sectional ):^ '/e curves through the candela distribution. & &