  We report on the design, manufacturing, and performance of the image slicer
for the High Dispersion Spectrograph (HDS) on the Subaru Telescope. This
instrument is a Bowen-Walraven type image slicer providing five 0.3 arcsec x
1.5 arcsec images with a resolving power of R= 110,000. The resulting resolving
power and line profiles are investigated in detail, including estimates of the
defocusing effect on the resolving power. The throughput in the wavelength
range from 400 to 700 nm is higher than 80%, thereby improving the efficiency
of the spectrograph by a factor of 1.8 for 0.7 arcsec seeing.
