  This paper presents the general equation to calculate the standard deviation
of reflected ray error from optical error through geometry optics, applying the
equation to calculate the standard deviation of reflected ray error for 8 kinds
of solar concentrated reflector, provide typical results. The results indicate
that the slope errors in two direction is transferred to any one direction of
the focus ray when the incidence angle is more than 0 for solar trough and
heliostats reflector; for point focus Fresnel lens, point focus parabolic glass
mirror, line focus parabolic galss mirror, the error transferring coefficient
from optical to focus ray will increase when the rim angle increase; for TIR-R
concentrator, it will decrease; for glass heliostat, it relates to the
incidence angle and azimuth of the reflecting point. Keywords: optic error,
standard deviation, refractive ray error, concentrated solar collector
