Teledyne Technologies Incorporated, together with its subsidiaries, provides enabling technologies for industrial growth markets in the United States and internationally. Its Digital Imaging segment provides visible spectrum sensors and digital cameras; and infrared, ultraviolet, visible, and X-ray spectra; as well as micro electromechanical systems and semiconductors, including analog-to-digital and digital-to-analog converters. This segment also offers cooled and uncooled infrared or thermal products, including sensors, camera cores, and camera systems; high-resolution, low-dose X-ray sensors, high-power microwave, and high-energy X-ray subsystems; and instruments for the measurement of physical properties and maritime products; as well as develops and manufactures multi-spectrum electro-optic/infrared imaging systems and associated products, such as lasers, optics, and radars, CBRNE (Chemical, Biological, Radiological, Nuclear and Explosive detectors), and unmanned air and ground systems. The company's Instrumentation segment offers monitoring, control, and electronic test and measurement equipment; and power and communications connectivity devices for distributed instrumentation systems and sensor networks. The company's Aerospace and Defense Electronics segment provides electronic components and subsystems, data acquisition and communications components and equipment, harsh environment interconnects, general aviation batteries, and other components; and onboard avionics systems and ground-based applications, aircraft data and connectivity solutions, hardware systems, and software applications. Its Engineered Systems segment offers systems engineering and integration, technology development, and manufacturing solutions for defense, space, environmental, and energy applications; and designs and manufactures electrochemical energy systems and electronics for military applications. The company was founded in 1960 and is headquartered in Thousand Oaks, California.

Coherent Corp. develops, manufactures, and markets engineered materials, optoelectronic components and devices, and optical and laser systems and subsystems for the use in the industrial, communications, electronics, and instrumentation markets worldwide. It operates through three segments: Networking, Materials, and Lasers. The Networking segment offers telecommunication products for fiber-optic transmission; datacom transceivers, including pluggable transceivers for ethernet and fiber channel applications; and advanced optics, such as fiber and precision optics used in projection displays, crystal materials and components for optical communications, filters and assemblies for life sciences, sensors, instrumentation, and semiconductor equipment, as well as ultraviolet (UV), visible, and near-infrared spectroscopy optics for industrial lasers. The Materials segments provides laser optics and accessories; infrared thermal imaging optics and assemblies; polycrystalline materials; thermoelectric components, subassemblies, and systems; ceramic and metal-matrix composite products; semiconductor lasers and laser bars; Q-switched laser modules, uncooled pump laser modules, and laser systems for superhard materials processing; laser processing heads and beam delivery systems; EELs, VCSELs, and detectors; pumps for amplifiers; precision optical assemblies, infrared optics, thin-film coatings and optical materials; optical solutions; and integrated circuits for transceivers. The Lasers segment offers UV gas and solid-state lasers; UV optical systems, line beams, and mask-based imaging systems; UV nanosecond lasers; continuous-wave lasers and systems; amplifiers; subsystems and standard systems; IR lasers; crystals and diode lasers, and specialty polishing and coating solutions. The company was formerly known as II-VI Incorporated and changed its name to Coherent Corp. in September 2022. Coherent Corp. was incorporated in 1971 and is headquartered in Saxonburg, Pennsylvania.

Fabrinet provides optical packaging and precision optical, electro-mechanical, and electronic manufacturing services in North America, the Asia-Pacific, and Europe. The company offers a range of advanced optical and electro-mechanical capabilities in the manufacturing process, including process design and engineering, supply chain management, manufacturing, printed circuit board assembly, advanced packaging, integration, final assembly, and testing. Its products include switching products, including reconfigurable optical add-drop multiplexers, optical amplifiers, modulators, and other optical components and modules that enable network managers to route voice, video, and data communications traffic through fiber optic cables at various wavelengths, speeds, and over various distances. The company's products also comprise transceivers, tunable lasers, and transponders; and active optical cables, which provide high-speed interconnect capabilities for data centers and computing clusters, as well as Infiniband, Ethernet, fiber channel, and optical backplane connectivity. In addition, it provides solid state, diode-pumped, gas, and fiber lasers used in semiconductor processing, biotechnology and medical device, metrology, and material processing industries; and differential pressure, micro-gyro, fuel, and other sensors used in automobiles, as well as non-contact temperature measurement sensors for the medical industry. Further, the company designs and fabricates application-specific crystals, lenses, prisms, mirrors, laser components, and substrates; and other custom and standard borosilicate, clear fused quartz, and synthetic fused silica glass products. It serves original equipment manufacturers of optical communication components, modules and sub-systems, industrial lasers, automotive components, medical devices, and sensors. The company was incorporated in 1999 and is based in George Town, the Cayman Islands.

Onto Innovation Inc. engages in the design, development, manufacture, and support of process control tools that performs optical metrology. The company offers lithography systems and process control analytical software. It also offers process and yield management solutions, and device packaging and test facilities through standalone systems for optical metrology, macro-defect inspection, packaging lithography, and transparent and opaque thin film measurements. In addition, the company provides process control software portfolio that includes solutions for standalone tools, groups of tools, and enterprise-or factory-wide suites. Further, it engages in systems software, spare parts, and other services, as well as offers software licensing services. The company's products are used in semiconductor and advanced packaging device manufacturers; silicon wafer; light emitting diode; vertical-cavity surface-emitting laser; micro-electromechanical system; CMOS image sensor; power device; analog device; RF filter; data storage; and various industrial and scientific applications. Onto Innovation Inc. was founded in 1940 and is headquartered in Wilmington, Massachusetts.

OSI Systems, Inc. designs and manufactures electronic systems and components. It operates in three segments: Security, Healthcare, and Optoelectronics and Manufacturing. The Security segment offers baggage and parcel inspection, cargo and vehicle inspection, hold baggage and people screening, radiation monitoring, explosive and narcotics trace detection systems, and optical inspection systems under the Rapiscan name. It also provides site design, installation, training, and technical support services; and turnkey security screening solutions under the S2 name. The Healthcare segment offers patient monitoring, cardiology and remote monitoring, and connected care systems and accessories under the Spacelabs name for use in critical care, emergency, and perioperative areas within hospitals, physicians' offices, medical clinics, and ambulatory surgery centers. The Optoelectronics and Manufacturing segment provides optoelectronic devices under the OSI Optoelectronics, OSI LaserDiode, OSI Laserscan, and Advanced Photonix names for the aerospace and defense, avionics, medical imaging and diagnostics, biochemistry analysis, pharmaceutical, nanotechnology, telecommunications, construction, and homeland security markets. It also offers electronics manufacturing services to original equipment manufacturers and end users for medical, automotive, defense, aerospace, industrial, and consumer applications under the OSI Electronics, APlus Products, Altaflex, and PFC Flexible Circuits names; LCD displays for medical, industrial, and consumer electronics applications; and flex circuits for OEM customers. This segment offers laser-based remote sensing devices to detect and classify vehicles in toll and traffic management systems under the OSI Laserscan and Autosense names; and solid-state laser products for aerospace, telecommunication, defense, and medical applications under the OSI LaserDiode name. The company was incorporated in 1987 and is headquartered in Hawthorne, California.

LightPath Technologies, Inc. designs, develops, manufactures, and distributes optical components and assemblies. It offers precision molded glass aspheric optics, molded and diamond-turned infrared aspheric lenses, and other optical components used to produce products that manipulate light; and infrared products, including catalog and custom infrared optics. The company's products are used in defense products, medical devices, laser aided industrial tools, automotive safety applications, barcode scanners, optical data storage, hybrid fiber coax datacom, telecommunications, machine vision and sensors, and other sectors. It sells its products directly to customers in Europe and Asia. LightPath Technologies, Inc. was founded in 1985 and is headquartered in Orlando, Florida.

Optex Systems Holdings, Inc manufactures and sells optical sighting systems and assemblies primarily for the U.S. department of defense, foreign military applications, and commercial markets in the United States. It offers periscopes, such as laser and non-laser protected plastic and glass periscopes, electronic M17 day/thermal periscopes, and vision blocks; sighting systems, including back up sights, digital day and night sighting systems, M36 thermal periscope, unity mirrors, optical weapon system support and maintenance, commander weapon station sights, and sight assembly refurbishments; howitzers comprising M137 telescope, M187 mount, M119 aiming device, XM10 and aiming circles; and applied optics center consisting of laser interference filter, optical assemblies, laser filter units, day windows, and specialty thin film coatings, as well as other products, such as muzzle reference systems, binoculars, collimators, optical lenses and elements, and windows. The company also provides various periscope configurations, rifle and surveillance sights, and night vision optical assemblies. Its products are installed on various types of U.S. military land vehicles, such as the Abrams, Bradley, and Stryker families of fighting vehicles, as well as light armored and armored security vehicles. The company offers its products directly to the federal government, prime contractors, and foreign governments. Optex Systems Holdings, Inc was founded in 1987 and is headquartered in Richardson, Texas. Optex Systems Holdings, Inc is a subsidiary of Sileas Corporation.

Precision Optics Corporation, Inc. designs, develops, manufactures, and sells specialized optical and illumination systems and related components primarily in the United States. The company offers medical instrumentation products, including endoscopes and endocouplers, as well as other custom imaging and illumination products, such as Microprecision lenses and micro medical cameras, and 3D endoscopes for use in minimally invasive surgical procedures by hospitals and physicians. It also provides components and assemblies for industrial and military use. It markets its products to medical device companies. Precision Optics Corporation, Inc. was incorporated in 1982 and is based in Gardner, Massachusetts.