We have used the integral field spectrograph OSIRIS and laser guide star adaptive optics at Keck Observatory to obtain high angular resolution ( 0 \farcs 06 ) , moderate spectral resolution ( R \simeq 3800 ) images of the bipolar jet from the Herbig Ae star LkH \alpha 233 , seen in near-IR [ Fe ii ] emission at 1.600 & 1.644 µm . This jet is narrow and tightly collimated , with an opening angle of only 9 degrees , and has an average radial velocity of \sim 100 km s ^ { -1 } . The jet and counterjet are asymmetric , with the red-shifted jet much clumpier than its counterpart at the angular resolution of our observations . The observed properties are in general similar to jets seen around T Tauri stars , though it has a relatively large mass flux of 1.2 \pm 0.3 \times 10 ^ { -7 } \mathrm { M _ { \odot } } year ^ { -1 } , near the high end of the observed mass flux range around T Tauri stars . We also spatially resolve an inclined circumstellar disk around LkH \alpha 233 , which obscures the star from direct view . By comparison with numerical radiative transfer disk models , we estimate the disk midplane to be inclined i = 65 \pm 5 \arcdeg relative to the plane of the sky . Since the star is seen only in scattered light at near-infrared wavelengths , we detect only a small fraction of its intrinsic flux . Because previous estimates of its stellar properties did not account for this , either LkHa 233 must be located closer than the previously believed , or its true luminosity must be greater than previously supposed , consistent with its being a \sim 4 \mathrm { M _ { \odot } } star near the stellar birthline .