Henry L. Hirvela has been named vice chairman of Three-Five Systems Inc., (TFS) a Tempe, Ariz., provider of electronics manufacturing services and display technology to original equipment manufacturers (OEMs). Hirvela, a member of the TFS board of directors and chair of its audit committe, will succeed David Malmberg when he retires as chairman in January. TFS also announced it has acquired the business and certain assets of Unico Technology Bhd., a private company based in Penang, Malaysia. Unico is an electronics manufacturer for OEM customers in the computer, server and communications industries. The Unico business was acquired by TFS Electronic Manufacturing Services Sdn. Bhd. (TFS Malaysia), a joint venture established by TFS and the former parent company of Unico Technology to facilitate the acquisition. Sam Quah will remain president of the Penang operation.   . . .   Pro-Lite Technology LLP, a photonics equipment distributor based in Cranfield, England, announced it will represent GWU Lasertechnik GmbH, a Cologne, Germany, optical parametric oscillator (OPO) specialist, in the UK and Ireland. Applications of OPOs, which increase a laser beam's wavelength, include mass spectrometry, laser-induced fluorescence, remote sensing, multiphoton absorption spectroscopy and combustion chemistry and the study of nonlinear materials.