  It has been shown that negative refraction makes a perfect lens. However,
with little loss, the imaging functionality will be strongly compromised. Later
on, it was proved that positive refraction from Maxwell's fish-eye lens can
also makes a perfect lens. However, strong debating happens on the introduced
drain problem at the imaging position. In this work, we for the first time find
that a solid immersion Maxwell's fish-eye lens could be used for
super-resolution imaging. We find that it is due to the perfect focusing and
total reflection at the outer interface, such that a super-resolution image is
formed at the required position in the air background. This simple mechanism
will also be valid for other absolute instruments and more versatile
super-imaging systems will be anticipated.

Optics;Classical Physics