  The super-oscillation lens (SOL) can achieve super-resolution focusing but
have to trade-off with weaker hotspots and higher sidebands. We propose a
single compound SOL to achieve reflective confocal imaging in principle without
additional lenses. The designed SOL consists of an outer lens and an inner lens
which play the role of focusing lens and collective lens respectively. As a
result, focusing and collecting functions can be simultaneously realized. The
improved system can achieve excellent imaging performance with an ultra-high
resolution (<0.34{\lambda}/NA, NA stands for numerical aperture), and almost
negligible side lobe ratio and no side bands, which proved superior to
conventional laser scanning confocal microscopy and single SOL. This technology
can be attractive for a variety of applications in super-resolution imaging and
biomedical sciences.
