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Unveiling Precision Thermal Vision

Revolutionary MWIR/LWIR Imaging

Tentative specifications

MWIR

Characteristic Value
Wavelength band
3 µm – 5 µm (tuneable)
NETD [K] @ F/2, 25°C, 25 Hz
< 50 mK
Cooler technology
TEC on laser diode, TEC on THIRFLIS-cell
Pixel size
3 µm x 3 µm
Number of pixels (H x V) (including reference image)
1280 x 720 at 25 fps
Dimensions (H x W x L) (uncooled) (without lens objective)
114 mm x 114 mm x 110 mm
MTTF (uncooled)
> 25.000 h
Mechanical shutter
Yes, to protect THIRFLIS-cell from very high radiation fluxes (temperature triggered)
Non-uniformity correction (NUC)
optical autocompensation technique
Mass
400 g
Power
30 W (24 VDC) (uncooled)
Video interface
SDI

LWIR

Characteristic Value
Wavelength band
8 µm – 12 µm (tuneable)
NETD [K] @ F/2, 25°C, 25 Hz
< 50 mK
Cooler technology
TEC on laser diode, TEC on THIRFLIS-cell
Pixel size
3 µm x 3 µm
Number of pixels (H x V) (including reference image)
1280 x 720 at 25 fps
Dimensions (H x W x L) (uncooled) (without lens objective)
114 mm x 114 mm x 110 mm
MTTF (uncooled)
> 25.000 h
Mechanical shutter
Yes, to protect THIRFLIS-cell from very high radiation fluxes (temperature triggered)
Non-uniformity correction (NUC)
optical autocompensation technique
Mass
400 g
Power
30 W (24 VDC) (uncooled)
Video interface
SDI

Thermal Resolution & Validation

Simulation of the normalized signal of a THIRFLIS pixel as function of the optical readout parameter ΔI (injection current of laser diode) and change of the voxel temperature ΔT in the transformation layer with respect to the TEC temperature of 20 °C. The normalized signal S has a 10-bit resolution. Number of pixels of the CMOS sensor in the THIRFLIS TRL7 prototype is 2048 (H) x 2048 (H) with pixel pitch of 5.5 micron. THIRFLIS TRL7 prototype expected by end December 2025.

TECHNICAL RESEARCH CENTRE OF FINLAND (VTT) will characterize experimentally the THIRFLIS invention in the PHOTONHUB EUROPE Innovation Project No. 101016665, under supervision by VRIJE UNIVERSITEIT BRUSSEL (VUB).

Cooled operation of the THIRFLIS transformation layer is possible after selection of the appropriate transformation layer material (solid, liquid, gas, colloid, polymer, liquid crystal…) and cold finger temperature.

Normalized digital signal of the THIRFLIS embedded 10-bit CMOS sensor as function of the laser diode injection current modulation (Δ I) and the increase (Δ T) of the transformation layer temperature with respect to the constant TEC temperature of 20 °C. The measured laser diode tunability is Δλ/ΔI = 0.00879 nm/mA. The TRL7 THIRFLIS prototype has a current shift of 0.66 mA for a phase shift of 2π.
Normalized digital signal of the THIRFLIS embedded 10-bit CMOS sensor as function of the laser diode injection current modulation (Δ I) and the increase (Δ T) of the transformation layer temperature with respect to the constant TEC temperature of 20 °C. The measured laser diode tunability is Δλ/ΔI = 0.00879 nm/mA. The TRL7 THIRFLIS prototype has a current shift of 0.66 mA for a phase shift of 2π.

The patent

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Special thanks

We thank the company AirBorn Inc. for supporting our activities and for manufacturing the connectors of the THIRFLIS prototype free of charge.