The Lambda Orionis Star Forming Region is a complex structure which includes the Col 69 ( Lambda Orionis ) cluster and the B30 & B35 dark clouds .
We have collected deep optical photometry and spectroscopy in the central cluster of the SFR ( Col 69 ) , and combined with 2MASS IR data , in order to derive the Initial Mass Function of the cluster , in the range 50-0.02 M _ { \odot } .
In addition , we have studied the H \alpha and lithium equivalent widths , and the optical-infrared photometry , to derive an age ( 5 \pm 2 Myr ) for Col 69 , and to compare these properties to those of B30 & B35 members .