Electro Optical Industries, Inc. (EOI) is now HGH USA, following our global rebranding under the HGH Group with HGH Infrared Systems. HGH USA is the world leader in innovative infrared technologies and electro-optical test equipment. Headquartered in Goleta, California, we design, develop, assemble, and sell electro-optical systems for industrial, civil, defense, and security applications.