FLIR

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A Teledyne brand specializing in thermal imaging, infrared sensing, and machine-vision technologies.

Last updated November 4, 2026

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First read: Nov 4, 2026
Latest read: Nov 4, 2026

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Overview

FLIR is the principal brand associated with FLIR Systems, an American developer of thermal imaging cameras, infrared detectors, sensing equipment, and related software. Founded in 1978, the company helped broaden the use of infrared imaging beyond specialized military applications into industrial inspection, building diagnostics, firefighting, law enforcement, maritime operations, transportation, outdoor recreation, consumer electronics, and commercial security. The name FLIR derives from “forward-looking infrared,” a description of infrared imaging systems that detect thermal radiation and produce images from differences in temperature rather than visible light. FLIR’s portfolio has included handheld thermal cameras, fixed-mount cameras, cooled and uncooled infrared cores, airborne and vehicle-mounted systems, gas-imaging cameras, measurement instruments, unmanned-platform payloads, and software for analysis and fleet management. Its products are used to identify heat loss, electrical and mechanical faults, overheating components, gas leaks, people and vehicles in low-visibility conditions, and temperature patterns that are difficult or impossible to observe with ordinary cameras. The company built a broad product architecture around several customer groups. Professional and industrial users have been served by lines such as the E-Series and T-Series handheld cameras, electrical and mechanical inspection tools, building-diagnostic systems, and optical gas-imaging products. Consumer-oriented products have included the FLIR ONE smartphone accessory, which combines a compact infrared sensor with a mobile device. Public-safety and defense customers have used thermal weapon sights, surveillance systems, vehicle and maritime cameras, airborne sensors, and integrated electro-optical payloads. FLIR also supplied infrared camera cores and components to original-equipment manufacturers. FLIR expanded through internal development and acquisitions. Important additions included the thermal-imaging businesses obtained through acquisitions such as Indigo Systems, as well as companies and product lines in unmanned systems, gas detection, maritime electronics, machine vision, and automated inspection. The resulting portfolio made FLIR more than a handheld-camera maker: it became a sensing and imaging platform spanning components, instruments, embedded systems, complete platforms, and analytics software. FLIR was publicly traded in the United States under the ticker FLIR until its acquisition by Teledyne Technologies. Teledyne announced the transaction in December 2020 and completed it in May 2021. The all-stock deal valued FLIR at approximately $8 billion including assumed debt, according to the companies’ announcement. FLIR became part of Teledyne’s broader digital imaging and instrumentation activities, while the FLIR name continued as a product and operating brand. Its present positioning is therefore best understood as a specialist imaging brand within Teledyne rather than as an independent listed company.

History

FLIR Systems was established in 1978 in the United States to develop forward-looking infrared technology. Infrared imaging detects radiation emitted by objects and converts temperature differences into a visual image. This capability is valuable in darkness, smoke, haze, and other conditions in which visible-light cameras are limited. Early demand came primarily from military, aerospace, and government applications, but the company’s long-term growth depended on reducing system size and cost and adapting the technology for commercial work. During the 1990s and 2000s, FLIR expanded its engineering and manufacturing capabilities and built a wider product range. The company developed uncooled infrared systems for applications that did not require the performance or expense of cooled detectors, helping thermal cameras reach industrial maintenance, building inspection, firefighting, law enforcement, transportation, and other professional users. FLIR also added components and camera cores that could be incorporated into products made by other equipment manufacturers. Acquisitions were an important part of the company’s development. Indigo Systems, known for infrared detectors and imaging technology, became part of FLIR and strengthened the company’s component and high-performance imaging capabilities. Other acquisitions broadened the business into maritime electronics, machine vision, gas detection, unmanned aircraft, and related sensing fields. This diversification allowed FLIR to sell both complete instruments and embedded technologies, including thermal cameras, infrared modules, surveillance systems, software, and integrated payloads. The company’s professional portfolio became associated with several recognizable product families. Handheld E-Series and T-Series cameras targeted electrical, mechanical, building, and maintenance inspections. Fixed and scientific A-Series systems supported automation, research, process monitoring, and condition-based maintenance. GF-Series cameras used infrared imaging for optical gas detection. Maritime and security products addressed navigation, observation, and perimeter or vehicle surveillance. FLIR ONE, introduced as a smartphone-connected thermal camera, extended the brand into consumer and small-business use. The acquisition of the Black Hornet business added very small unmanned aircraft and a new route into defense and public-safety reconnaissance. FLIR was listed on the Nasdaq under the symbol FLIR for many years and reported as a global provider of thermal-imaging and sensing products. Its customers included commercial and industrial companies, utilities, transportation operators, public-safety agencies, defense organizations, and consumers. The company’s technology was used for predictive maintenance, energy auditing, firefighting, search and rescue, border and perimeter monitoring, maritime awareness, airborne observation, and defense imaging. In December 2020, Teledyne Technologies agreed to acquire FLIR in an all-stock transaction. The announced transaction value was approximately $8 billion including assumed debt. The combination joined FLIR’s thermal and sensing portfolio with Teledyne’s digital-imaging, instrumentation, aerospace, and defense businesses. The acquisition closed in May 2021, and FLIR ceased to operate as an independent publicly traded company. The FLIR name remained in use across thermal-imaging, sensing, and related product families within Teledyne’s organization. Its current identity is therefore that of an active specialist brand and operating business under Teledyne, rather than a separately listed corporation.

2021
Acquisition closes
[4]Teledyne completes acquisition of FLIR Systemsteledyne.com
Teledyne completes the transaction and FLIR becomes part of Teledyne’s imaging and instrumentation activities.
2020
Teledyne announces acquisition
[3]Teledyne Technologies to acquire FLIR Systemsteledyne.com
Teledyne Technologies announces an all-stock agreement to acquire FLIR Systems for approximately $8 billion including assumed debt.
2019
Black Hornet business added
[6]FLIR acquires leading nano-UAV companyflir.com
FLIR acquires Particip GmbH and its Black Hornet nano-unmanned-aircraft business, expanding into compact aerial reconnaissance.
2014
FLIR ONE launches
[5]FLIR ONE product informationflir.com
The company introduces a smartphone-connected thermal camera, broadening access to infrared imaging.
2004
Indigo Systems acquisition
[8]Indigo Systems acquisitionsec.gov
FLIR acquires Indigo Systems, adding infrared detector, camera-core, and high-performance imaging capabilities.
1993
Public-company era begins
[7]Public-company era beginssec.gov
FLIR Systems becomes a publicly traded company, supporting later expansion in commercial and government imaging markets.
1978
FLIR Systems is founded
[1]FLIR About Usflir.com
The company is established in the United States to develop forward-looking infrared imaging technology.

Products and positioning

Professional-grade thermal imaging and sensing for industrial, public-safety, defense, maritime, transportation, commercial, and consumer applications.

Consumer and professional thermal imaging · 2014
FLIR ONE
A compact thermal-imaging accessory that connects to compatible smartphones. FLIR ONE products are intended for uses such as home inspection, troubleshooting, maintenance, outdoor observation, and educational exploration. Their smartphone format helped make infrared imaging more accessible outside traditional military, industrial, and laboratory environments.
Handheld thermal cameras
FLIR T-Series
Professional handheld thermal cameras designed for detailed inspection and troubleshooting. Depending on the model, the range supports electrical and mechanical maintenance, building diagnostics, research, and condition monitoring, with features such as infrared measurement, visual imaging, reporting, and wireless workflow integration.
Handheld thermal cameras
FLIR E-Series
Compact thermal-imaging cameras for building, electrical, mechanical, and general maintenance inspections. The series is positioned between entry-level instruments and more advanced professional cameras, combining temperature measurement with image capture and inspection-report functions.
Fixed-mount infrared cameras
FLIR A-Series
Fixed and scientific infrared cameras used for automation, research, process monitoring, equipment testing, and predictive maintenance. These systems are suited to continuous observation and integration with industrial software or control environments rather than occasional handheld inspection.
Optical gas imaging
FLIR GF-Series
Specialized infrared cameras designed to visualize leaks of selected industrial gases. They support inspection of pipelines, valves, storage facilities, process equipment, and other infrastructure where rapid, non-contact leak localization is important.
Nano unmanned aerial systems
FLIR Black Hornet
A family of very small unmanned aircraft for short-range reconnaissance and situational awareness. Black Hornet systems combine a compact air vehicle with electro-optical and infrared sensing and are associated with defense, security, and public-safety missions.

Marketing campaigns

2020COVID-19 temperature-screening solutions
Global
During the COVID-19 pandemic, FLIR marketed thermal cameras and screening solutions for identifying elevated skin temperature in settings such as workplaces, transport hubs, and public facilities.
Outcome. The campaign increased demand for thermal screening, while the company and public-health authorities emphasized that thermal cameras do not diagnose infection and require appropriate screening protocols.
Source
2014FLIR ONE launch
United States · Global
FLIR promoted a smartphone-connected thermal camera as a way to bring infrared imaging to consumers, tradespeople, inspectors, and small businesses.
Outcome. The product became one of the brand’s best-known consumer-facing offerings and helped expand awareness of thermal imaging.
Source

Brand decisions

2020
Agreement to be acquired by Teledyne TechnologiesM&A
Background
FLIR and Teledyne each operated in digital imaging, sensing, instrumentation, aerospace, and defense-adjacent markets, creating opportunities to combine complementary technologies.
Action taken
The companies agreed to an all-stock transaction under which Teledyne would acquire FLIR.
Aftermath
The transaction was completed in 2021. FLIR became a Teledyne brand and was no longer an independent listed company.
Announced transaction value including assumed debt. Approximately $8 billion (December 2020 announcement)
Source
2019
Acquisition of Particip GmbHM&A
Background
FLIR wanted to extend its sensing portfolio into small unmanned systems for reconnaissance and situational awareness.
Action taken
FLIR acquired Particip GmbH, associated with the Black Hornet nano-unmanned-aircraft product line.
Aftermath
The acquisition broadened FLIR’s defense and public-safety portfolio beyond cameras and standalone sensors.
Source
2014
Launch of FLIR ONEProduct launch
Background
Thermal imaging had traditionally been expensive and specialized, limiting its availability to professional and government users.
Action taken
FLIR introduced a smartphone-connected thermal camera accessory for consumer and professional applications.
Aftermath
The launch gave FLIR a visible consumer product and helped demonstrate a lower-cost form factor for infrared imaging.
Source
2004
Acquisition of Indigo SystemsM&A
Background
FLIR sought to strengthen its infrared components, detectors, and high-performance imaging capabilities.
Action taken
FLIR acquired Indigo Systems and incorporated its technology into the broader FLIR imaging portfolio.
Aftermath
The transaction increased FLIR’s presence in infrared camera cores, sensors, and specialized imaging applications.
Source

Recent events

2021.01.05
Reported2021.01.05
Teledyne announces plan to acquire FLIR[10]Teledyne宣布将收购FLIRfinance.sina.com.cn
Teledyne was reported to be acquiring FLIR in a transaction valued at $8 billion, comprising cash and stock.
2020.04.01
Reported2020.04.01
FLIR announces A400/A700 thermal camera solutions[11]FLIR推出A400/A700热成像摄像机解决方案financialpost.com
FLIR announced its A400/A700 Thermal Smart Sensor and Thermal Image Streaming fixed-camera solutions for equipment, production-line, and infrastructure monitoring and elevated skin temperature screening. The cameras were available for purchase globally, and initial shipments were to be prioritized for those responding to COVID-19.
Unconfirmed
FLIR Fido X4 receives ASTM performance certification[12]FLIR Fido X4 获 ASTM 性能认证sourcesecurity.com
FLIR announced that its Fido X4 handheld explosives trace detector was certified by Signature Science in accordance with ASTM E2520-15.
2020.01.21
Reported2020.01.23
FLIR announces discontinuation of selected Outdoor product lines[13]FLIR宣布停止部分户外产品线ammoland.com
FLIR announced that it was discontinuing selected Outdoor product lines as it focused more on professional users. It said discontinued products would remain available through existing channels until inventory was depleted, and that it would continue to honor qualified warranties for registered products.
2019.09.24
Reported2019.09.25
FLIR announces MUVE C360 chemical-sensing platform[14]FLIR发布MUVE C360化学传感平台c4isrnet.com
FLIR announced the MUVE C360, a chemical-sensing platform designed for public safety and enterprise customers. FLIR expected to ship it to U.S. customers before the end of 2019 and to customers in Europe by early 2020.

Sources17 sources

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