Evolution of mid-infrared galaxy luminosity functions from the entire
  AKARI NEP-Deep field with new CFHT photometry
  We present infrared galaxy luminosity functions (LFs) in the AKARI North
Ecliptic Pole (NEP) deep field using recently-obtained, wider CFHT
optical/near-IR images. AKARI has obtained deep images in the mid-infrared
(IR), covering 0.6 deg$^2$ of the NEP deep field. However, our previous work
was limited to the central area of 0.25 deg$^2$ due to the lack of optical
coverage of the full AKARI NEP survey. To rectify the situation, we recently
obtained CFHT optical and near-IR images over the entire AKARI NEP deep field.
These new CFHT images are used to derive accurate photometric redshifts,
allowing us to fully exploit the whole AKARI NEP deep field. AKARI's deep,
continuous filter coverage in the mid-IR wavelengths (2.4, 3.2, 4.1, 7, 9, 11,
15, 18, and 24$\mu$m) exists nowhere else, due to filter gaps of other space
telescopes. It allows us to estimate restframe 8$\mu$m and 12$\mu$m
luminosities without using a large extrapolation based on spectral energy
distribution (SED) fitting, which was the largest uncertainty in previous
studies. Total infrared luminosity (TIR) is also obtained more reliably due to
the superior filter coverage. The resulting restframe 8$\mu$m, 12$\mu$m, and
TIR LFs at $0.15<z<2.2$ are consistent with previous works, but with reduced
uncertainties, especially at the high luminosity-end, thanks to the wide field
coverage. In terms of cosmic infrared luminosity density
($\Omega_{\mathrm{IR}}$), we found that the $\Omega_{\mathrm{IR}}$ evolves as
$\propto (1+z)^{4.2\pm 0.4}$.
