Exotic Electro-Optics Announces MTF (Modulation Transfer Function) Measurement Capability for Wavelengths from 0.4 to 13 Microns

Media Contact

Evan Lundstedt

Director, Programs and Business Development

951-926-2994

elundstedt@exotic-eo.com

Announcing MTF measurement capability used to describe the optical performance of lenses and optical systems

Murrieta, California - July 17, 2012 - Exotic Electro-Optics, Inc. (EEO), a subsidiary of II-VI Incorporated (NASDAQ: IIVI) is pleased to announce the completed installation of new metrology equipment calibrated to measure multiple optical parameters including MTF (Modulation Transfer Function), Focal Length, Distortion, Ensquared Energy et.al., for wavelengths from 0.4 to 13 microns. The equipment provides reliable, industry-recognized standards for optical performance. The testing system was purchased to support the company’s growing need to validate both custom and standard lens assemblies and to offer testing services to its customers.

“We are excited about the growth of our Optical Assembly business. This new capability will help us serve both our existing and future customers. We can now make both interferometric and MTF measurements from the visible through the Long IR,” remarks, Andrew Riser, General Manager.

About Exotic Electro-Optics

Founded in 1961, Exotic Electro-Optics (EEO) is an established supplier of visible through infrared optical components and subassemblies to the military and aerospace industries for electro-optical imaging systems and intelligence, surveillance and reconnaissance (ISR) applications. Product offerings include infrared and multi-spectral windows, domes, lenses and opto-mechanical assemblies. Located in Murrieta, California, EEO maintains approximately 90,000 square feet of vertically integrated crystal growth, optical manufacturing, coating, assembly, test, and clean room facilities to support these applications. http://www.exotic-eo.com.

About II-VI Incorporated

II-VI Incorporated, the worldwide leader in crystal growth technology, is a vertically-integrated manufacturing company that creates and markets products for a diversified customer base including industrial manufacturing, military and aerospace, high-power electronics and telecommunications, and thermoelectronics applications. Headquartered in Saxonburg, Pennsylvania, with manufacturing, sales, and distribution facilities worldwide, the Company produces numerous crystalline compounds including zinc selenide for infrared laser optics, silicon carbide for high-power electronic and microwave applications, and bismuth telluride for thermoelectric coolers.

In the Company's infrared optics business, II-VI Infrared manufactures optical and opto-electronic components for industrial laser and thermal imaging systems, and HIGHYAG Lasertechnologie GmbH (HIGHYAG) manufactures fiber-delivered beam delivery systems and processing tools for industrial lasers. In the Company's near-infrared optics business, VLOC 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. Photop Technologies, Inc. (Photop) manufactures crystal materials, optics, microchip lasers and opto-electronic modules for use in optical communication networks and other diverse consumer and commercial applications. In the Company’s military & materials business, Exotic Electro-Optics (EEO) manufactures infrared products for military applications, and Pacific Rare Specialty Metals & Chemicals (PRM) produces and refines selenium and tellurium materials. In the Company's Compound Semiconductor Group, the 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. (Marlow) designs and manufactures thermoelectric cooling and power generation solutions for use in defense, space, photonics, telecommunications, medical, consumer and industrial markets; and the Worldwide Materials Group (WMG) provides expertise in materials development, process development and manufacturing scale up.

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, including any worsening of the global economic downturn, 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 failure of any one or more of the assumptions stated above to prove to be correct; (ii) 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, 2009; (iii) the purchasing patterns from customers and end-users; (iv) the timely release of new products, and acceptance of such new products by the market; (v) the introduction of new products by competitors and other competitive responses; and/or (vi) the Company’s ability to devise and execute strategies to respond to market conditions.

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