Optics for Hire (OFH) of Arlington, Mass., an optical product development company, has completed its acquisition of the patent portfolio and other assets developed and owned by Actuality Systems Inc., a 3-D display technology provider. OFH purchased 19 US patents and multiple patent applications, including foreign counterparts. Most notably, it acquired Actuality’s Perspecta spatial 3-D display technologies, multiple free-eye 3-D image projection patents, and a suite of software and hardware technologies for cancer treatment.