  Simultaneous wireless information and power transfer (SWIPT) leverages
lightwave as the wireless transmission medium, emerging as a promising
technology in the future Internet of Things (IoT) scenarios. The use of
retro-reflectors in constructing spatially separated laser resonators (SSLR)
enables a self-aligning wireless transmission system with the self-reproducing
resonant beam, i.e. resonant beam system (RBS). However, it's effective Field
of View (FoV) is physically limited by the size of retroreflectors and still
requires significant improvement. This restricts the transmitter from providing
seamless wireless connectivity and power supply to receivers within a large
dynamic movement range. In this paper, we propose an FoV-enlarged resonant beam
system operating at a meter distance by incorporating a telescope. The
telescope plays a crucial role in minimizing the extra loss inflicted on the
gain medium, which typically arises from the deviation of the resonant beam
within the cavity. Further, we construct the proposed telescope-based RBS and
experimentally demonstrate that the design could expand the FoV to 28$^\circ$
over 1 m transmission distance is about triple that of the ordinary RBS design.
