Imacon 675 Ultra High Speed Picosecond Streak and Framing Camera

Imacon 675 Ultra High Speed Picosecond Streak and Framing Camera Imacon 675 Ultra High Speed Picosecond Streak and Framing Camera Imacon 675 Ultra High Speed Picosecond Streak and Framing Camera

Item: 4031

Price: $14800.00

Includes

  • Imacon 675 streak/framing camera
  • 300 MHz timebase calibration module
  • Power cable

Refurbished by Hofstra Group

  • Verified performance
  • Replaced degraded components
  • Tuned electronics for best performance
  • Thoroughly inspected

Download Static Test Data

Options Available from Hofstra Group

  • Standard lead time 8 weeks; expedite available
  • Digital camera upgrade
  • Framing modules for speeds up to 600 million fps
  • Synchroscan
  • Image intensifier
  • Input optics
  • Delay generator for synchronization

High speed photography has long been used as the prime means of obtaining pictorial information from events that are too fast for visual recording. It is an accepted fact that a sequence of images of a high speed process has offered considerable data which has helped evaluate the mechanics of that process, often complementing other instrumentation. As the engineer's appetite for detailed information becomes more voracious, more and more is expected from the cameras which record the data.

The image converter camera has, for many years, been the recognized standard for recording many types of high and ultra high speed phenomena. This has resulted from the simplicity of operation, portability and the ease of synchronization to the event under investigation.

Applications

  • Ballistics
  • Combustion Research
  • Failure Dynamics
  • Elasticity, Crack Propagation and Shock resistance
  • Medical Research and testing
  • Detonics
  • Impact Studies
  • Spray and Particle Analysis
  • Automotive testing
  • Nanotechnology and micro-machines
  • Time-resolved optical spectroscopy
  • Electrical discharge studies
  • Plasma physics
  • Laser emission
  • Photo-chemical kinetics
  • Aerodynamics

Streak Camera Theory

The streak camera converts incident light into electrons and performs a high-speed sweep (deflecting electrons from top to bottom), enabling detection of the time variation of the incident light intensity by converting these into different positions on the screen. (See figure below.)

Figure

The light pulse to be measured is focused onto the photocathode of the streak tube through the slit, where the photons are converted into a number of electrons proportional to the intensity of the incident light. These electrons are accelerated and conducted towards the phosphor screen, and a high-speed voltage which is synchronized to the incident light is applied. The electrons are swept at high speed from top to bottom after which they are bombarded against the phosphor screen of the streak tube and converted to an optical image.

The optical image which appears on the phosphor screen is called a streak image, and shows the intensity distribution of the incident light, by which the positions of the electrons can be determined in the perpendicular direction over the passage of time. Using this method, the temporal intensity distribution of the light being measured can be displayed as the spatial intensity distribution on the phosphor screen.

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Specifications

Number of Frames Acquired 8 to 16
Maximum number of frames per second 600 million
Exposure Times 200 ns at 1 million fps (20% of framing rate)
Light Gain 40 times brightness gain per unit area for white light (xenon flash). 50 times brightness gain per unit area at 440nm on S20 photocathode. Total brightness gain from cathode to screen is 4 times greater than these figures due to magnification.
Spectral Response Range 300 to 800 nm
Spatial Resolution [lp/mm] 7
Trigger Input 10 V
Trigger Input Impedance 50 Ω
Dynamic Range 400:1 at 104 fps and 50:1 at 2x107 fps
Photocathode Material S-20
Photocathode Minimum Useful Size 9 mm high and 8 mm wide
Streak Output Format 15 x 50 mm
Streak Tube Magnification 2
AC Input Power 100, 120, 220, or 240 Vac at 40 Watts
Phosphor Material Aluminized P11 (blue). Peak response 460 nm; persistance 80 μs. to 10%. Fiber optic output nominal fiber diameter 5.5 micron; numerical aperture 1.
Temporal Resolution 4 picoseconds
Sweep Time/Full Screen 44 settings: 1.5 to 500 ns
Trigger Jitter 50 picoseconds
Framing Contrast Ratio Before triggering and in operate mode, deflection shuttering efficiency (shutter open to shutter closed ratio) is >106. After triggering for 0.7 s shuttering efficiency is >107. This returns to 106 after 0.7 s
Retail Price $189,001.41