Teledyne Technologies Incorporated is an American industrial conglomerate. It was founded in 1960, as Teledyne, Inc., by Henry Singleton and George Kozmetsky. From August 1996 to November 1999, Teledyne existed as part of the conglomerate Allegheny Teledyne Incorporated – a combination of the former Teledyne, Inc., and the former Allegheny Ludlum Corporation. On November 29, 1999, three separate entities, Teledyne Technologies, Allegheny Technologies, and Water Pik Technologies, were spun off as free-standing public companies. Allegheny Technologies retained several companies of the former Teledyne, Inc. that fit with Allegheny's core business of steel and exotic metals production. At various times, Teledyne, Inc., had more than 150 companies with interests as varied as insurance, dental appliances, specialty metals, and aerospace electronics, but many of these had been divested prior to the merger with Allegheny. The new Teledyne Technologies was initially composed of 19 companies that were earlier in Teledyne, Inc. By 2011, Teledyne Technologies had grown to include nearly 100 companies. Segments Teledyne Technologies currently operates with four major segments: Digital Imaging, Instrumentation, Engineered Systems, and Aerospace and Defense Electronics. Digital imaging This segment handles sponsored and central research laboratories for a range of new technologies, as well as development and production efforts in digital imaging products for government applications. Included are infrared detectors, cameras, and opto-mechanical assemblies. Instrumentation This segment provides monitoring and control instruments for marine, environmental, scientific, industrial, and defense applications as well as harsh environment interconnect products. Engineered systems This segment provides systems engineering and integration, advanced technology application, software development, and manufacturing solutions to space, military, environmental, energy, chemical, biological and nuclear systems, and missile defense requirements. It also designs and manufactures hydrogen gas generators, thermoelectric and fuel-based power sources, and small turbine engines. Aerospace and defense electronics This segment provides complex electronic components and subsystems for communication products, including defense electronics, data acquisition and communications equipment for air transport and business aircraft, and components and subsystems for wireless and satellite communications, as well as general aviation batteries. Companies , Teledyne Technologies listed the following companies: Teledyne Advanced Pollution Instrumentation Teledyne Anafocus Teledyne Analytical Instruments Teledyne Battery Products Teledyne Benthos Teledyne BlueView Teledyne Bowtech Teledyne Brown Engineering Teledyne Brown CollaborX Teledyne CDL Teledyne CML Composites Teledyne CARIS Teledyne CETAC / Photon Machines Teledyne Controls Teledyne Cormon Teledyne Cougar Teledyne D.G.O'Brien Teledyne DALSA Teledyne Defence & Space Teledyne e2v Teledyne Electronic Manufacturing Services Teledyne Electronic Safety Products Teledyne