  We present the measurement of the size and surface brightness of the
expanding light echoes from supernova (SN) 2014J in the nearby starburst galaxy
M82. Hubble Space Telescope (HST) ACS/WFC images were taken ~277 and ~416 days
(after the time of B-band maximum light) in the filters F475W, F606W, and
F775W, each combined with the three polarizing filters: POL0V, POL60V, and
POL120V. The two epochs' imaging reveals the time evolution of at least two
major echoes. Three concentric bright regions between position angles (PA,
0^{\circ} from North, counterclockwise). 80^{\circ} ~ 170^{\circ} have
projected radius of 0.60" on the sky on ~277 days and expanding to 0.75" on
~416 days, corresponding to scattering materials at a foreground distance of
222\pm37 pc. Another fainter but evident light echo extending over a wide range
of PA has radii of 0.75" and 0.96" on ~277 and ~416 days. This corresponds to
scattering material at a foreground distance of 367\pm61 pc. Multiple light
echoes with S/N > 2.5 reside at smaller radii on ~277 days but become less
significant on ~416 days indicating a complex structure of foreground
interstellar medium (ISM). The light echo shows bluer color than predicted
under a Rayleigh scattering case. We also found the light echo brightened from
V_{echo}=21.68\pm0.07 on 2014 September 5, to V_{echo}=21.05\pm0.08 on 2014
November 6, suggesting an enhancement of echoing materials at different
distances projected on to the plane of the sky.
