Scienti

Cheetah-640: World's fastest InGaAs camera

fic Instruments and Equipments


The Cheetah-640 is a near infrared camera that employs a 640 x 512 InGaAs FPA. The Cheetah-640 NIR camera head interfaces to a PC via GigE and CameraLink. The camera has internal memory of up to 16 GB which allows to save up to 15 seconds of full sized images at maximum framerate (1730 fps). The Cheetah-640 is perfectly suited for applications that require high resolution at high frame rate operation.

  • InGaAs detector; >99% pixel operability
  • 0.9 to 1.7 µm sensitivity
  • 640 x 512 pixels
  • Framerate 400Hz, 1730Hz
  • GigE and CameraLink interfaces
  • Single Stage Peltier cooler
  • External trigger input
  • Two gain modes
  • Multiple sub frame windowing capability

Cheetah-640: High Quality, high flexibility

The Cheetah-640 camera is the fastest infrared camera in the world. This unit is equipped with a dedicated high-speed InGaAs detector array working up to 1.7µm and comes in a 400 and 1700 Hz speed version. It allows you to visualize the ultra high-speed features of your specific research application.

The camera records images into 16 GB of internal memory, which allows for up to 8 seconds of recording at full speed. Interfacing with the PC is done via GigE or CameraLink. The Cheetah-640 is delivered with a graphical user interface Xeneth, which offers direct access to various camera settings. The software tool also features two-point uniformity correction and bad pixel replacement.

Cheetah-640: Detailed specifications

 Array Specifications

Cheetah 400Hz

Cheetah 1700Hz

 Array type

 InGaAs

InGaAs 

 Spectral Band

0.9 to 1.7 µm 0.9 to 1.7 µm

 # pixels

640 x 512

640 x 512

 Pixel pitch

20 micron 20 micron

 Array Cooling

TE1-cooled

TE1-cooled

 Pixel operability

>99%

>99%

 Camera  Specifications

Cheetah 400Hz

Cheetah 1700Hz

 Lens (Included)



 Focal length

25 mm f/0.95 25 mm f/0.95

 Optical interface

C-mount

C-mount

 Imaging Performance

 

 

 Frame rate

400 Hz 1700 Hz

 On-board memory

8 GB

16 GB

 Integration type

Snapshot Snapshot
 Regions of interest 4 parallel windows of interest, minimum size 32 x 4 pixels. 290 kHz max. frame rate if one window selected.

4 parallel windows of interest, minimum size 32 x 4 pixels. 360 kHz max. frame rate if one window selected.

 Exposure time range 1 µs up to 100 ms (cooled)

1 µs up to 100 ms (cooled)

 A to D conversion resolution 

14 bit

14 bit 

 Interfaces

 

 

 Camera control

Gigabit Ethernet

Gigabit Ethernet

 Image acquisition

Gigabit Ethernet & CameraLink

Gigabit Ethernet & CameraLink

 Trigger interface

3.3 V CMOS levels (trigger in & out) 3.3 V CMOS levels (trigger in & out)

 Graphical User Interface (GUI)

Xeneth Advanced

Xeneth Advanced

 Power Requirements

 

 

 Power consumption

Max. 60 W

Max. 60 W

 Power supply

12 V - 5 A

12 V - 5 A

 Physical Characteristics

 

 

 Camera Cooling

Forced convection cooling

Forced convection cooling

 Ambient operating  temperatures

0 to 50 °C

0 to 50 °C

 Dimensions

150 x 150 x 250 mm³

150 x 150 x 250 mm³

 Weight camera head

app. 5 kg

app. 5 kg

  

 Software Specifications

 Cheetah-640

 Xeneth Advanced

 Image live view

 Store digital pictures/movies

 Image histogram

 Line profiles, Spot meters,  Time profiles

 Subframe dimension and position

 Digital zoom

 Black hot / White hot

 False color mode with various color patterns

 Advanced image processing features:

   - image averaging

   - auto or manual gain control

   - advanced filters

 

Cheetah-640: Applications

The Cheetah-640 is a full format high-speed infrared camera fitted with an on-board memory and image processing capabilities for unique high-speed image processing. These specifications make the Cheetah-640 your ideal partner
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Basically, imaging spectroscopy, or hyperspectral imaging, is a happy fusion of spectroscopy and imaging processing. Imaging spectroscopy can be seen either as an extension of classical image processing or an enhancement of classical spectroscopy.


The simplest case is using a black and white camera that captures the grey-scale values of objects - yielding high surface resolution but no spectral information. A color camera, on the other hand, with three image sensors or a sensor with Bayer color filter, will deliver a multi-spectral image with comparably high spatial resolution and three relatively broad-band color channels of red, green and blue, yet with a relatively low spectral resolution. Finally, a spectral imaging system - it operates with just one sensor and a tunable narrow-band filter placed in the optical path to select a frequency. Alternatively, it functions as a so called push-broom scanner to perform, usually via mechanical feed of test object or spectrometer, a line-based scan. For every pixel in every line, the spectrum is captured and stored.

Both methods use significantly more color channels. This is why they are called hyperspectral: they deliver high spatial resolution and, at the same time, high spectral resolution. The measured data of the X- and Y-coordinates and the radiation components at certain frequencies are located in a three-dimensional data space (cube).
 
Imaging spectroscopy has proved its worth in the acquisition of geological parameters from the air or by satellite in order, for example, to answer environment-related questions such as relating to the water quality of lakes. On a microscopic scale, the method can be applied to good advantage for multi-channel spectral analysis of light-emitting semiconductors, or in bio-medical and chemical sample analysis. Furthermore, hyperspectral imaging can be perfectly suited for industrial process monitoring for waste sorting, fruit and vegetable inspection, moisture measurements, fat analysis, web inspection, … and many more applications.
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