PITTSBURGH, April 14 /PRNewswire-FirstCall/ -- II-VI Incorporated today announced that it intends to release its fiscal 2005 third quarter results for the period ended March 31, 2005 on Wednesday, April 20, 2005 after the market closes. In conjunction with this release and to review the Company's financial results, market trends and future outlook, the Company will host a conference call that will be broadcast live over the Internet on Thursday, April 21, 2005.

The information to be released on Wednesday, April 20, 2005 will be filed with the U.S. Securities and Exchange Commission on a Form 8-K and made available on the Company's website at http://www.ii-vi.com/ prior to the conference call that will take place on Thursday, April 21, 2005.

Individuals wishing to participate in the webcast, to be held at 10:00 a.m. Eastern Time on Thursday, April 21, 2005, can access the event at the Company's web site by visiting http://www.ii-vi.com/ or via http://phx.corporate-ir.net/playerlink.zhtml?c=65340&s=wm&e=1048662 .

Please allow extra time prior to the call to visit the site and, if needed, download the media software required to listen to the Internet broadcast. The online archive of the broadcast will be available within 3 hours of the live call and will be available for 2 weeks.

Headquartered in Saxonburg, Pennsylvania, II-VI Incorporated designs, manufactures and markets optical and opto-electronic components, devices and materials for infrared, near-infrared, visible light, x-ray and gamma ray instrumentation. The Company's infrared optics business manufactures optical and opto-electronic components sold under the II-VI brand name and used primarily in CO2 lasers. The Company's near-infrared optics business manufactures near-infrared and visible light products for industrial, scientific, military and medical instruments and laser gain materials and products for solid-state YAG and YLF lasers at the Company's VLOC subsidiary. The Company's military infrared optics business manufactures infrared products for military applications under the Exotic Electro-Optics (EEO) brand name. In the Company's Compound Semiconductor Group, the eV PRODUCTS division manufactures and markets solid-state x-ray and gamma-ray sensor products and materials for use in medical, industrial, environmental, scientific and homeland security applications; the Company's Wide Bandgap Materials (WBG) group manufactures and markets single crystal silicon carbide substrates for use in the solid-state lighting, wireless infrastructure, RF electronics and power switching industries; Marlow Industries, Inc. designs and manufacturers thermoelectric cooling and power generation solutions for use in defense, space, photonics, telecommunications, medical, consumer and industrial markets.

This press release contains forward-looking statements based on certain assumptions and contingencies that involve risks and uncertainties. The forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and relate to the Company's performance on a going-forward basis. The forward-looking statements in this press release involve risks and uncertainties, which could cause actual results, performance or trends to differ materially from those expressed in the forward-looking statements herein or in previous disclosures. The Company believes that all forward-looking statements made by it have a reasonable basis, but there can be no assurance that management's expectations, beliefs or projections as expressed in the forward-looking statements will actually occur or prove to be correct. In addition to general industry and economic conditions, factors that could cause actual results to differ materially from those discussed in the forward-looking statements in this press release include, but are not limited to: (i) the Company's ability to successfully integrate Marlow's operations into the Company's organization and to realize synergies in material growth and utilization of our worldwide manufacturing and distribution networks (ii) the failure of any one or more of the assumptions stated above to prove to be correct; (iii) the risks relating to forward-looking statements and other "Risk Factors" discussed in the Company's Annual Report on Form 10-K for the fiscal year ended June 30, 2004; (iv) purchasing patterns from customers and end-users; (v) timely release of new products, and acceptance of such new products by the market; (vi) the introduction of new products by competitors and other competitive responses; and/or (vii) the Company's ability to devise and execute strategies to respond to market conditions.

CONTACT: Craig A. Creaturo, Chief Financial Officer and Treasurer of
II-VI Incorporated, +1-724-352-4455, or ccreaturo@ii-vi.com

Web site: http://www.ii-vi.com/