We present the first determination of the near-infrared K - band luminosity function of field galaxies from a wide field K - selected redshift survey .
The best fit Schechter function parameters are M ^ { * } = -23.12 + 5 log ( h ) , \alpha = -0.91 , and \phi ^ { * } = 1.66 \times 10 ^ { -2 } h ^ { 3 } ~ { } Mpc ^ { -3 } .
We estimate that systematics are no more than 0.1 mag in M ^ { * } and 0.1 in \alpha , which is comparable to the statistical errors on this measurement .