Electronics

Raytheon's micro thermal chips could be "end of the flashlight"

Raytheon's micro thermal chips...
The new chips could make thermal imagers standard issue for soldiers and police officers
The new chips could make thermal imagers standard issue for soldiers and police officers
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Diagram of the new thermal imaging package
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Diagram of the new thermal imaging package
Scale of a microbolometer
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Scale of a microbolometer
The new chips could make thermal imagers standard issue for soldiers and police officers
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The new chips could make thermal imagers standard issue for soldiers and police officers
The new chips can be used in thermal imagers for seeing in the dark
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The new chips can be used in thermal imagers for seeing in the dark

Technological advances aren't just about making new devices. Many times it's more a matter of taking an existing device and improving on it. A case in point is Raytheon's work on a new thermal imaging chip that the company says will find so many applications due to it being so small and cheap, that it may make the humble flashlight obsolete.

Unlike other night vision technologies that work by amplifying tiny traces of visible light or by illuminating scenes with an infrared lamp, Raytheon's new thermal imaging chip detects heat in complete darkness. It is manufactured using "wafer-level packaging," which Raytheon says is the same process used to make computer chips. Over the past decade, the technology has reduced the imaging chips in size by a factor of six, while the number of parts for a sensor package has reduced from 15 to two.

Wafer-level packaging creates thousands of microscopic windows and vacuum-packaged thermal detectors called microbolometers on the chip's surface. Each microbolometer is 17 microns wide and a single sensor chip can contain tens of millions of microbolometers with each wafer holding thousands of sensor chips. This simplifies construction and greatly reduces the cost of the thermal sensors. It also makes them much more rugged, so they can hold up to everything from a smartphone in a pocket to battlefield conditions.

Diagram of the new thermal imaging package
Diagram of the new thermal imaging package

Applications for the new chips are "endless," Raytheon engineers say, with uses for everything from smart cars to potholing. The chips make it possible, for example, to issue thermal imagers for every soldier and police officer as standard kit, allowing them to follow targets by the heat of their footprints. In addition, cars could be equipped with sensors that adjust the airbags by being able to tell a child from a bag of groceries based on the heat signature.

"Once it reaches a certain price point, you'll see it kind of popping up in a lot of different areas," says Adam Kennedy, a lead engineer at Raytheon Vision Systems. "That's just very, very exciting."

Source: Raytheon

15 comments
BigGoofyGuy
I am not sure how it would make flashlights obsolete but it is way cool. I think it could supplement flashlights at times when flashlights don't illuminate much.
Axe
I've been waiting years for thermal imaging prices to come down. I really want to see consumer thermal imaging hit the mass market soon.
Bruce H. Anderson
I agree with BigWarpGuy, I think the flashlight is safe since it lights up stuff and you look directly at the object with your eyes, rather than through a monitor. And you can look at something from a different angle than the light source, which is sometimes necessary. However, having thermal imaging cheap and ubiquitous is a real game-changer, and big companies in that sector are in real trouble. Remember slide rules?
LtP
Could we PLEASE get these into ALL automobiles as OEM and retrofit?! I'm sick and tired of facing blindingly bright headlights/foglights because those drivers can't see the road at night. It's not enough for those driving 'luxury' vehicles (Beamers, Caddies, etc) to have night vision - we ALL need it. Many's the time I've found carcasses of dead deer in the road or off to the side - with huge blood splatters and, sometimes, compact cars and minivans disabled with caved-in windshields. I've been lucky so-far because I wear yellow lenses which block the UV and blue light wavelengths but THIS technology would allow every driver to spot wildlife in the road well ahead of having to 'panic brake' or hit them.
Stuart Wilshaw
Great idea but there are times when you need direct vision. This won't stop deer and other road kills; the animals usually come out to fast.
Joel Detrow
BigWarpGuy, instead of flashlights, we'd put on an augmented-reality headset that displays a thermal video.
Paul Horwitz
It won't replace the flashlight for the simple reason that it doesn't distinguish objects by their reflectivity but by their thermal emissivity (in practical terms, by temperature rather than by color). This makes all objects that are at the same temperature look the same (and "objects" like footprints that are at a different temperature stand out). Cool, but way different from a flashlight.
Mel Tisdale
I suppose that this technology could take heat seeking missiles to a whole new level of capability, not to mention their probable use in identifying dummy warheads used by strategic nuclear missiles to confuse anti-ballistic missile systems.
esar
Just keep this cheap tech away from the bad guys!
coryatjohn
What's the technology readiness level (TRL) of this research? Anything less than a 6 and it will be a long time before actual devices are produced.