Less than a year after raising about $800,000 through a Third Frontier grant from the state of Ohio, vascular imaging company InfraRed Imaging Systems Inc. is looking for more.

The company intends to raise $500,000, and has so far received commitments for about $50,000 of that amount, according to a filing with the Securities & Exchange Commission.

CEO Dale Siegel didn’t immediately return a call or e-mail.

After defecting to Bethlehem, Pa., about three years ago from Columbus, Ohio, InfraRed Imaging Systems Inc. is planning a move back to Ohio after securing an $812,000 Third Frontier grant (PDF) in June.

CEO Dale Siegel just doesn’t know where yet. The Marysville, Ohio, resident is considering his hometown, the Columbus area or Cleveland suburb Eastlake.