By Company (Ulis)

October 2017

September 2017

July 2017

June 2017

May 2017

Aselsan Developing Infrared Detector Capability

Uncooled fab already under construction

April 2017

December 2016

October 2016

July 2016

June 2016

Gas Imaging Using Uncooled FPAs

Imaging of gas leaks (especially of methane, but also of other gases) has traditionally been done with portable infrared cameras based on cooled InSb and QWIP FPAs. In these, either the FPA spectral response is tuned to the absorption wavelength of the gas of interest or a spectral filter is used in front of it. Alternatively, high-end spectrally selective (Fourier Transform Infrared – FTIR) cameras (also based on cooled FPAs) are used to detect gas leaks with high sensitivity, but at a price premium.


Now, a new generation of innovative uncooled gas sensors are being developed to not just monitor large gas leaks but also act as monitors for small leaks.

April 2016

Teledyne Dalsa Launching Uncooled Camera Core

Teledyne Dalsa (Waterloo, Canada) is releasing a new uncooled camera, Calibir, based on a Ulis 640 x 480 amorphous silicon microbolometer with 17 micron pixels.

March 2016

October 2015

Uncooled Infrared Detectors in China

The presence of uncooled infrared technology in China started more than 13 years ago when Ulis began to supply uncooled amorphous silicon (a-Si) microbolometers to companies such as SATIR, Guide Infrared and Dali.

Since then, FLIR Systems has also supplied VOx uncooled modules, but with strict export restrictions on array size and frame rate.

The success of uncooled detector technology developed in the west caused Chinese companies to undertake major development programs to initiate a domestic supply of both a-Si and VOx microbolometers.

The current status of these developments is summarized here.

August 2015

June 2015

September 2014

July 2014

June 2014

Russian Thermal Weapon Sight

Owning Some of the Night

November 2013

June 2013

March 2013

January 2013

November 2012

August 2012

July 2012

May 2012

March 2012

November 2011

October 2011

July 2011

June 2011

November 2010

August 2010

July 2010

June 2010

February 2010

January 2010

September 2009

Pushing Uncooled Detector Technology to Its Limits

Smaller Pixels and Larger Formats

July 2009

May 2009

March 2009

February 2009

November 2008

Sofradir Buys Electrophysics

The Strategy Behind the Move

September 2008

Ulis to Supply Microbolometers to Sagem for FELIN Program

Ulis has landed a five year contract with Sagem Défense Sécurité (Paris, France) to be one of the primary suppliers of uncooled microbolometers for weapon sights and handheld infrared cameras, including those used in FELIN, the French Army’s Future Infantry Soldier System.

American HealthChoice Launches OmniBody Scan

The Latest Attempt at Infrared Diagnostic Breast Imaging

August 2008

Uncooled FPAs in France

Uncooled microbolometer development in France has been very rapid partly because of the cooperation between the CEA/Leti labs and Ulis

July 2008

May 2008

GE Takes Minority Stake in Ulis

General Electric’s GE Commercial Finance is taking a 15% minority stake in Ulis, the supplier of uncooled amorphous silicon microbolometers.

April 2008

The Race to 17 Micron Pixels

Manufacturers of uncooled microbolometers are racing to develop and introduce focal plane arrays with 17 micron pixels. The smaller size pixels are seen by producers as a way to differentiate their products and as a path to lower cost and higher volume markets.

March 2008

November 2007

A-Si Matches VOx

Amorphous silicon (a-Si) uncooled microbolometers made by ULIS are increasingly reaching performance levels previously attained only by VOx microbolometers.

August 2007

July 2007

May 2007

March 2007

November 2006

January 2006

A New Honeywell License

Honeywell is continuing its bid to license a broad swath of uncooled microbolometer technologies. In the latest agreement, L-3 Communications has reached a license agreement for the amorphous silicon microbolometers being made by its L-3 Infrared Products unit (formerly Raytheon Commercial Infrared).

ULIS Large FPA Goes into Production

ULIS has moved it’s large format (640 x 480 with 25 µm pixels) amorphous silicon uncooled microbolometers into production. The chip is based on a single-level microbridge, thus avoiding the complexity and expense of dual-level designs.