The Collaborative International Dictionary of English v.0.48:

Focalize \Fo"cal*ize\, v. t. [imp. & p. p. Focalized; p. pr. &
   vb. n. Focalizing.]
   To bring to a focus; to focus; to concentrate.
   [1913 Webster]

         Light is focalized in the eye, sound in the ear. --De
                                                  Quincey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

focalize
    v 1: concentrate on a particular place or spot; "The infection
         has localized in the left eye" [syn: localize,
         localise, focalize, focalise]
    2: bring into focus or alignment; to converge or cause to
       converge; of ideas or emotions [syn: concenter,
       concentre, focalize, focalise, focus]
    3: become focussed or come into focus; "The light focused" [syn:
       focus, focalize, focalise] [ant: blur, dim, slur]
    4: put (an image) into focus; "Please focus the image; we cannot
       enjoy the movie" [syn: focus, focalize, focalise,
       sharpen] [ant: blear, blur]