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View Full Version : Debut for world's fastest camera



AcadieLibre
04-30-2009, 08:19 AM
Just find this interesting, amazing what they can do.


"The fastest imaging system ever devised has been demonstrated by researchers reporting in the journal Nature."



http://news.bbc.co.uk/1/hi/sci/tech/8025211.stm

Iguanasan
04-30-2009, 08:52 AM
Cool! I like gadgets.... I have to say though that they have quite the descriptive text.

"Its "flashbulb" is a fast laser pulse dispersed in space and then stretched in time and detected electronically"

What the heck does it mean by "stretched in time" ?!?

Greg_Nuspel
04-30-2009, 09:00 AM
What the heck does it mean by "stretched in time" ?!?

They are doing the time warp....now put you hands on your hips......

Ben H
04-30-2009, 10:20 AM
Cool. I look forward to the day when the camera specs of a decent camera, instead of doing this:

Frame rate: 10fps

...do this:

Frame rate: 10mfps

So, assuming it takes one second to jump up and down, shooting that and playing it back at normal film speeds (25fps) would mean your jump video would last four days... (!)

tirediron
04-30-2009, 10:25 AM
Their camera's "shutter speed" is just a half a billionth of a second

And when they get the f0.000002 lens to go with it, you'll have a dynamite rig for shooting hummingbirds!

AcadieLibre
04-30-2009, 10:29 AM
Cool! I like gadgets.... I have to say though that they have quite the descriptive text.

"Its "flashbulb" is a fast laser pulse dispersed in space and then stretched in time and detected electronically"

What the heck does it mean by "stretched in time" ?!?

I had this in a file for something I was reading about, if I can find the source I will post it, I prefer to point to the source when I can but at the moment it eludes me. I am not taking credit in anyway for writing this, it was something I came across while researching wave theory but was not related to what I was looking for but kept it and planned and reading more about it at a later date. I think this is what your looking for.


Concept for analog-to-digital (A/D) conversion based on photonic time stretch. The analog electrical signal is intensity modulated on a chirp optical waveform generated by dispersing an ultrashort pulse. The modulated chirped waveform is dispersed in an optical fiber, leading to the stretching of its envelope. We have derived analytical expressions for the stretch factor and the resolution of the system. An analog-to-digital converter (ADC) consisting of the photonic time-stretch preprocessor and a 1-Gsample/s electronic ADC is demonstrated. This technique is promising for A/D conversion of ultrafast signals and, hence, for realization of the digital receiver.