  In nature, many common insects have compound eyes composed of many small eyes
arranged on a curved retina. This kind of vision systems have many advantages,
such as small size, large FOV (field of view) and high sensitivity, which have
attracted extensive attention and research from world-wide researchers. It has
good application prospects in military strikes and mechanical vision. In this
paper, a new type of miniature compound eye system with large FOV is designed,
which contains a micro-lens array and a relay system. Hexagonal micro-lens
array are spliced seamlessly as a curved shell in the designed compound eye
system. The intermediate curved image formed by the curved array is converted
to a planar image by introducing a relay system. After combination and
optimization of the micro-lens array and the relay system, the MTF values at
89.3lp/mm for each FOV within 120.5{\deg} are greater than 0.3, and the
corresponding RMS spot radii less than the radius of the Airy disk, which
proves the good imaging quality for the compound eye. The clear aperture of a
single micro lens is 250{\mu}m with FOV 6{\deg}. After tolerance analysis, the
results show the image quality still holds good enough performance and meets
the requirements of the additive manufacturing process.
