













- 640 x 512 Pixels
- Field of View: 17.7°H x 14.2°V FoV
- 35mm Lens
- Frame Rate: Fast 30Hz or Slow <9Hz Available
- 17μm Pixel Pitch
- 150 Grams
- LWIR
- Performance Grade <50mK NEDT SKU:46640035H-FPNLX - $7979.00
- Industrial Grade <30mK NEDT SKU:46640035H-FINLX - $9495.00
NeDT
NEDT (noise equivalent differential temperature) is the key figure of merit which is used to qualify midwave (MWIR) and longwave (LWIR) infrared cameras. It is a signal-to-noise figure which represents the temperature difference which would produce a signal equal to the camera’s temporal noise. It therefore represents approximately the minimum temperature difference which the camera can resolve. It is calculated by dividing the temporal noise by the response per degree (responsivity) and is usually expressed in units of milliKelvins. The value is a function of the camera’s f/number, its integration time, and the temperature at which the measurement is made.
Interfaces and Accessories sold separately.
- : We usually have a majority of these items in stock.
Please call or contact us for availability. - SKU: 46640035H
Available Options
In general, thermal cameras operating at 60 fps and/or 30 fps (NTSC) or 50 / 25 fps (PAL) video rates are export-controlled by the U.S. government.
The FLIR OEM camera modules are classified as dual-use items and require export licenses from the U.S. Department of Commerce.
These Include:
- Tau 2 640 (both 60 and 30 fps)
- Tau 2 336
- Tau 2+ 640 (both 60 and 30 fps)
- The FLIR Vue and Vue Pro (640 and 336) are also dual-use.
- Boson 640 (60/30 fps) and Boson 320
These are controlled to the ITAR, and require export licenses from the U.S. Department of State prior to delivery outside of the U.S. or Canada.
The U.S. government allows thermal cameras with frame rates less that 9 fps to be exported without a license. This is why FLIR offers thermal cameras with "fast video" and "slow video" options.
NEDT (noise equivalent differential temperature) is the key figure of merit which is used to qualify midwave (MWIR) and longwave (LWIR) infrared cameras. It is a signal-to-noise figure which represents the temperature difference which would produce a signal equal to the camera’s temporal noise. It therefore represents approximately the minimum temperature difference which the camera can resolve. It is calculated by dividing the temporal noise by the response per degree (responsivity) and is usually expressed in units of milliKelvins. The value is a function of the camera’s f/number, its integration time, and the temperature at which the measurement is made.
EXPORT CONTROLLED PRODUCT :
FLIR 320x240 60Hz and 30Hz Fast-Video and 640x480 30Hz Fast-Video (>9Hz) uncooled LWIR Thermal Camera Core products are export controlled and require validated export licenses from the U.S. Department of Commerce prior to export or re-export outside of the United States to certain countries.
Strategic Trade Authorized (STA) Countries are an exception. In circumstances whereby "RHP International" delivers a camera to a customer in the U.S. who intends to export or re-export the FLIR camera outside of the United States, whether or not the camera is integrated into another product, it is the customer’s responsibility to apply for the required export license from the appropriate department of the U.S. government. Diversion contrary to U.S. law is prohibited.
Click the link below for a list of STA countries and more Export information.
The Export Conditions page details information regarding what countries thermal cameras can be exported to.
Tau™ 2
LONGWAVE INFRARED THERMAL CAMERA CORE
Made in USA, the Tau® 2 OEM thermal imaging cameras offer an unmatched combination of features and reliability, making them well-suited for demanding applications including unmanned vehicles, thermal sights, and handheld imagers. Improved electronics provide powerful image processing modes that dramatically improve detail and contrast through continuous histogram equalization. Radiometry is available in every pixel for both 640 × 512 and 336 × 256 resolutions and all three camera grade levels. All Tau 2 configurations share electrical, mechanical, and optical interfaces allowing integrations to be designed that work seamlessly with all formats. Available in Commercial, Performance, and Industrial variants, each with unique sensitivity and pixel operability thresholds to meet operational requirements. Radiometry is an optional feature for Performance-grade cameras, and standard feature with Industrial-grade. All Tau 2 configurations and resolutions share electrical, mechanical, and optical interfaces allowing integrations to be designed that work seamlessly with all formats.

LOADED WITH FEATURES; READY FOR MORE
Advanced electronics and image processing give Tau an unprecedented feature set, and make it ready for your next big idea.

POWERFUL IMAGING PROVIDES EXPANDED CAPABILITY
Tau 2's expanded capability ensures accurate temperature measurement for radiometry, analytics and telemetry.

INFORMATION-BASED HISTOGRAM EQUALIZATION (HEQ)
HEQ automatically adjusts image contrast to let you see what matters most in a scene, and give you the image detail that makes a difference.
ACCURATE TEMPERATURE MEASUREMENT
Supports radiometry, analytics and telemetry
• TLinear output places temperature data in each pixel
• Adjustable isotherm thresholds colorize temperatures of interest
• Rugged and reliable in all terrain
IMPROVED IMAGE PROCESSING
For clearer imagery, edge sharpening, and contrast
• Second generation Digital Detail Enhancement (DDE)
• Active Contrast Enhancement (ACE)
• Smart Scene Optimization (SSO)
• Information Based HEQ (IBHEQ) automatically adjusts AGC
• Silent Shutterless NUC for continuous image improvement
COMMON FEATURES ACROSS MODELS
Fosters improved OEM integration
• 640 and 336 resolutions
• Multiple lens and FOV options
• 60Hz or 30mK frame rates
• Mechanical / electrical compatibility
• FLIR brand and support
Color Palette Comparison (30Hz)
Color Palette Comparison (7.5Hz)
FLIR Tau 2 Features
FLIR Tau 2 640 Thermal Imaging Camera Core LWIR Uncooled Thermal Imaging Cameras offer an unmatched set of features such as radiometry, increased sensitivity (<30mK), frame rates, and powerful image processing modes. Some key features include:
- 640 x 512 Pixels
- 30Hz Frame Rate
- 2x and 4x Continuous Digital Zoom
- Multiple Color Palette Function
- Remote Control via TTL
- Improved Image Processing
- Customizable Splash Screen
- 1 Year Manufacturer Warranty
- Exportable to Most Countries License Free
FLIR Tau 2 for OEM Applications
Since the electrical functions are common between the Tau 2 640 and 336, integrators have direct compatibility between the different camera formats, and Tau 2 camera versions share many of the same lens options. Making them well-suited for demanding applications like:
- UAV & UGV Systems
- Component Analysis
- OEM Handheld Imagers
- Nighttime Navigation
- Security Systems
- Electrical Inspection
- Aerial Photography
FLIR Tau 2 Out of the Box Video
(with VPC Module Kit)
FLIR Tau Distance Chart
OVERVIEW | |
Spectral Band | LWIR | 7.5 µm – 13.5 µm |
Field of View | 18°(H) x 14°(V) | 0.486 mr (Horizontal x Vertical) |
Minimum Focus Distance | 60 centimeters |
Spot Meter | Temperatures measured in central 4×4 |
Pixel Pitch | 17 µm |
Sensitivity [NEdT] | Industrial: <30mK | Performance: <50 mK | Commercial: <60mK |
Detector Type 2 | Uncooled VOx Microbolometer |
Weight | 150g |
Dimensions (L x W x H) | 1.75" x 1.75" x 1.18"/ 1.5" x 1.5" x 1.18" (Compact and Shutterless) |
Exportable Frame Rate | 30/60 Hz (NTSC) 25/50 Hz (PAL) |
CONNECTIONS & COMMUNICATIONS | |
Discrete I/O Controls Available | Yes (10-camera minimum) |
Dynamic Range Switching | Yes |
External Sync Input/Output | Yes |
Flat-Field Correction (FFC) Duration | <0.5 sec |
Primary Electrical Connector | 50-pin Hirose |
RS-232 Compatible Communication | 57,600 & 921,600 baud |
Settable Splash Screens | Yes (10-camera minimum) |
User Configurability via SDK & GUI | Yes |
COMPLIANCE & CERTIFICATIONS | |
Certifications | Yes |
IMAGING & OPTICAL | |
Digital Detail Enhancement | Yes |
Analog Video Display Format | 640 × 480 (NTSC); 640 × 512 (PAL) |
BT656 (8-bit) Digital Output(s) | Yes |
Factory Optimized Video | Yes |
Lens Options | 35mm f/1.2, 18° HFoV |
CMOS (14-bit or 8-bit) | Yes |
Color and Monochrome Palettes (LUTs) | Yes |
Scene Range [high gain] | -25°C to +100°C |
Scene Range [low gain] | -40°C to +550°C |
FPA & Digital Video Display Formats | 640 x 512 |
Image Optimization | Yes |
Hyperfocal Depth of Field | 18m |
Hyperfocal Distance | 35m |
Lensed & Lensless Configurations Available | Yes |
LVDS (14-bit or 8-bit) | Yes |
Polarity Control [black hot & white hot] | Yes |
Slow Video Option [factory configured] | Yes |
Symbology | Yes, single-pixel resolution (256 gray and 256 color) |
Time to Image | <5.0 sec |
Invert/Revert (analog and 8-bit digital) | Yes |
Camera Link (Expansion Bus Accessory Module) | Yes |
Continuous Digital Zoom | 1X to 8X zoom |
Diameter | 42mm |
Length | 35mm |
ENVIRONMENTAL | |
Operational Altitude | +40,000 feet |
Operating Temperature Range | -40°C to +80°C (Industrial & Performance) -20°C to +65°C (Commercial) |
Humidity (Operating and Storage) | 5% - 95% non-condensing |
RoHS | Compliant |
Temperature Shock | 5°/min |
Shock | 200g shock pulse w/ 11 msec sawtooth |
Vibration | 4.3g three axis, 8 hr each |
POWER | |
Input Voltage | 4.0 - 6.0 VDC |
Power Dissipation [steady state] | approx. 1.0 W |
MECHANICAL | |
Precision Mounting Holes | Yes |
Lens Mounts | M24x0.5 inside thread; M29x1.0 outside thread |
Sealable Bulkhead Mounting Feature | Yes |
RADIOMETRY | |
Advanced Radiometry | Improved accuracy, movable spot meter, image metric data, T-Linear (digital output) AR requires a separate calibration that must be performed during camera manufacture. The AR capability is captured in the camera part number. An additional fee is charged for this feature. |