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FLIR Tau 2 640 35mm Thermal Imaging Camera Core - 46640035H-FPNLX - FLIR Systems - 640x512 Pixels - 17.7°H x 14.2°V FoV - 35mm Lens - 30Hz (7.5Hz Available) - 17μm Pixel Pitch - 150 Grams - LWIR

Introducing the new FLIR Tau 2 640 35mm (46640035H-FPNLX) NFOV LWIR uncooled thermal imaging camera core. The Tau 2 640 offers 2x, 4x, and 8x continuous digital zoom, F1.1 with a 640x512 17μ micron pixel resolution.

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FLIR Tau 2 640 35mm Thermal Imaging Camera Core
FLIR Tau 2 640 35mm Thermal Imaging Camera Core FLIR Tau 2 640 35mm Thermal Imaging Camera Core FLIR Tau 2 640 35mm Thermal Imaging Camera Core FLIR Tau 2 640 35mm Thermal Imaging Camera Core

FLIR Tau 2 640 35mm Thermal Imaging Camera Core

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Manufacturer: FLIR Systems
Model: 46640035H-FPNLX
Product Highlights
  • 640x512 Pixels
  • 17.7°H x 14.2°V FoV
  • 35mm Lens
  • 30Hz (7.5Hz Available)
  • 17μm Pixel Pitch
  • 150 Grams
  • LWIR

Resolution Comparison

Color Palette Comparison (30Hz)

Color Palette Comparison (7.5Hz)

FLIR Tau 2 Features

FLIR Tau 2 640 (46640035H-FPNLX) WFOV 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:

  • 640x512 Pixel Resolution
  • 30Hz Field-Switchable Frame Rates
  • 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, 336 and 324, 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 2 Starter Kit Video

FLIR Tau 360° View


FLIR Tau Distance Chart


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Tau 2 Export Guide: Frame Rate Comparison Video

Full-Rate Thermal Video Cameras 30Hz (Fast Video)

BIS-711 Form

640x480 - 30/25Hz (Greater than 9Hz)
US Department of State, United States Munitions List (USML) Category XIIc

FLIR TAU, TAU2 & QUARK uncooled thermal imaging cameras operating at 30Hz (NTSC) or 25Hz (PAL) with a resolution of 640x480 are controlled as defense articles for export from the United States under the authority of the US Department of State, United States Munitions List (USML) Category XIIc. US Government authorization is required for export from the United States to all destinations, whether for permanent or temporary export.

For additional information regarding how to export a system, please contact the DDTC Response Team:
• Phone: 202-663-1282
• Email: DDTCResponseTeam@State.Gov


336x256 / 324x256 / 320x240 / 160x120 / 80x60 - 30/25Hz (Less Than 60Hz)
Export Control Classification Number (ECCN) is 6A003.b.4.b

FLIR TAU, TAU2 & QUARK uncooled thermal imaging cameras operating at 30Hz (NTSC) or 25Hz (PAL) with a resolution of 336x256 and lower-resolution are export-controlled by the U.S. Department of Commerce.

Strategic Trade Authorization (STA) Countries are exempt from a license but a Consignee Statement would need to be filled out by the end used prior to receiving the product.

STA Country List:
Australia, Austria, Belgium, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Netherlands, New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom

For other countries a validated export licenses must be obtained from the U.S. Department of Commerce prior to export or re-export of such devices outside of the United States.

Note that there are several countries to which the export of thermal imaging cameras is prohibited under any circumstances, regardless of the camera resolution or video rate.

These countries are Cuba, Iran, Libya, North Korea, Sudan, and Syria. Export policies governing the export of thermal imaging cameras are established by the U.S. government, and in order for RHP International to comply with the policy requirements, we in turn ensure that our customers agree to these conditions. Please see BIS-711 form link above.

Slow-Rate Thermal Video Cameras 7.5Hz (Slow Video)

BIS-711 Form

640x480 / 336x256 / 324x256 / 320x240 - 7.5Hz (Less than 9Hz)
Export Control Classification Number (ECCN) is 6A993

These cameras may be exported under ECCN 6A993, NLR (No License Required) to all countries except terrorist supporting countries.

A 'STATEMENT BY ULTIMATE CONSIGNEE AND PURCHASER' BIS-711 will need to be filled out prior to shipment.

Under no circumstances can thermal imaging cameras be used in the design, development, production, or use of nuclear, biological, or chemical weapons, regardless of frame rate.

RHP International / OEMCameras.com or any of its subsidiaries are not responsible for any errors and or omissions for the content listed on this site.



Overview Tau 640 Tau 336 Tau 160
Thermal Imager Uncooled VOx Microbolometer
FPA / Digital Video Display Formats 640 × 512 336 × 256 160 × 128
Analog Video Display Formats 640 x 480 (NTSC); 640 x 512 (PAL)
Pixel Pitch 17 μm
Spectral Band 7.5 - 13.5 μm
Full Frame Rates 30 Hz (NTSC)
25 Hz (PAL)
30/60 Hz (NTSC)
25/50 Hz (PAL)
Exportable Frame Rates 7.5 Hz NTSC; 8.3 Hz PAL
Sensitivity (NEdT) <50 mK at f/1.0
Scene Range (High Gain) -40°C to +160°C
Scene Range (Low Gain) N/A -40°C to +550°C
Time to Image ~3.5 sec ~2.0 sec
Factory Optimized Video Yes
Physical Attributes Tau 640 Tau 336 Tau 160
Size (w/o lens) 1.75" x 1.75" x 1.18"
Lensed & Lensless Configurations Available Yes
Precision Mounting Holes (M2x0.4) on 3 sides (2 per side) Yes
Sealable Bulkhead Mounting Feature on Lens Barrel (M29×1.0), WFOV Only Yes
Image Processing & Display Controls Tau 640 Tau 336 Tau 160
NTSC/PAL (field switchable) Yes
Image Optimization Yes
Digital Detail Enhancement Yes
Invert/Revert (analog and 8-bit digital) Yes
Polarity Control (black hot/white hot) Yes
Color & Monochrome Palettes (LUTs) Yes
Digital Zoom 2x, 4x, 8x 2x, 4x
Symbology (256 gray & 256 color) Yes, single-pixel resolution for all models
Digital Video Tau 640 Tau 336 Tau 160
LVDS (14-bit or 8-bit) Yes
CMOS (14-bit or 8-bit) Yes
BT.656 (8-bit) Yes
Camera Link (Expansion Bus Accessory Module) Yes
Slow Video Option (factory configured) Yes
Interfacing Tau 640 Tau 336 Tau 160
Primary Electrical Connector 50-pin Hirose
Input Power (max 2.5 amp during shutter) 4.0 - 6.0 VDC
Power Dissipation, steady state ~1.2 W <1.0 W
Flat-Field Correction (FFC) Duration <0.5 sec
Power Reduction Switch (disables analog video) Yes
RS-232 Compatible Communication 57,600 & 921,600 baud
External Sync Input/Output Yes
Discrete I/O Controls Available Yes (10-camera minimum)
Settable Splash Screens Yes (10-camera minimum)
User Configurability via SDK & GUI Yes
Dynamic Range Switching No Yes
Environmental Tau 640 Tau 336 Tau 160
Operating Temperature Range -40°C to +80°C
Non-Operating Temperature Range -55°C to +95°C
Temperature Shock (5°/min) Yes
Operational Altitude (up to 40,000') Yes
Humidity (non-condensing between 5% - 95%) Yes
Vibration (4.3g three axis, 8 hr each) Yes
Shock (200g shock pulse w/ 11 msec sawtooth) Yes
ROHS, REACH, and WEEE Compliant Yes
Field of View 25 mm f/1.1 35 mm f/1.2 50 mm f/1.2 60 mm f/1.25 100 mm f/1.6
Tau 640 (17μ 640×512) FoV iFoV 25° x 20° 0.680 mr 18°x14° 0.486 mr 12.4°x9.9° 0.340 mr 10.4°x8.3° 0.283 mr 6.2°x5° 0.170 mr
Tau 336 (17μ 336×256) FoV iFoV 13°x10° 0.680 mr 9.3°x7.1° 0.486 mr 6.5°x5° 0.340 mr 5.5°x4.2° 0.283 mr 3.3°x2.5° 0.170 mr
Min Focus Distance 30cm 60cm 1.5m 2.3m 7m
Hyperfocal Distance 21m 35m 71m 122m 160m
Hyperfocal Depth of Field 11m 18m 36m 61m 80m
Lens Mount M34x0.5 inside thread.
Length 25mm 35mm 50mm 60mm 100mm
Diameter 42mm 42mm 58mm 61mm 82mm
Weight 112g 150g 280g 200g 479g

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