Our world leading technology.
VEC Imaging replaces the traditional coiled filament with nanotube (NT) field emission emitter (Cold Cathode)
Benefits of our technology.
Chemically and mechanically very stable
Optimal emission characteristics (low turn-on electric field, high emission current)
Cold cathode with no heat generation (high energy efficiency)
Ultra fast switching on/off cost-effective manufacturing
Access to tomography in image guided surgery is provided
Innovative NT materials.
- Improved chemical and thermal stability
- Better electrical and thermal conductivity
- Enhanced field emission properties (high emission current and higher emission stability)
New cathode/emitter activation process.
VEC Imaging has taken the cathode activation process to the next level. Our revolutionary process is based on curable liquid adhesives instead of rigid adhesive tape. This allows us to avoid the issue of being highly sensitive to process parameters that are difficult to control, such as the adhesive strength and applied pressure. Instead, we control the activation results with high accuracy by managing easily the controllable process parameters including curing temperature and time.
Activation results based on high resolution curable liquid polymer
Activation results based on adhesive tape: Poor uniformity
NT emitter produced by the state of art electrophoretic deposition process, no uniformity, rough surface
NT emitter produced by the VEC screen printing process, very uniform with smooth surface
New cathode/emitter deposition process.
- Excellent reliability and consistency on mass production scale
- Extremely accurate control of average film thickness (± 1.5 µm) within one cathode and among different cathodes
- Much more uniform and smooth cathode surface (surface roughness ± 3 μm)
- Improved production yield and reduced material and production costs
The PULSE MODULATORS developed by VEC Imaging offer a vast variety of features not available with other existing modulators on the market. They have been designed with scalability in mind to serve not only in industrial or military applications, but can also be used in the medical field – all this in a very compact enclosure. The unique internal design approach allows not only for multiple energy levels, but also for specific adjustment of the pulses’ slope rise and fall time as well as an active droop compensation. Features that are currently only available for the price of an additional Pulse Forming Network (PFN) are both integrated and actively programmable on a per-pulse setting at rates of more than 500 times per second, in VEC Imaging’s PULSE MODULATORS. This allows the use of a wide range of different e.g. magnetrons in an unprecedented way, and is opening doors for new applications.
Droop compensation. Flattens the amplitude across the entire pulse.
Built-in, programmable Pulse Forming allows controlled, instantaneous magnetron current and constant RF power within Nanoseconds.
With VEC Imaging’s PULSE MODULATORS, your Imagination is the limit.
Electronic Control System
The novel technology of nanotube x-ray emitters puts high demands on the controlling hardware. It requires an electronic capable of delivering high voltage and high energy in pulses lasting only fractions of milliseconds. The Electronic Control System (ECS) has initially been developed as the control and driving source for the connected MBX Tubes. The ECS is comprised of two main components – the cathode section that controls the emitters and the Anode Power Supply (APS).
Blue: Output signal
Red: Current on primary side
Green: Voltage on primary side
The ECS captivates with its modular concept, that allows for an application specific design on one hand, as well as flexibility and scalability of up to approximately 1500 high voltage switching channels on the other. The APS shows the same modular design and can be adapted to voltage levels ranging from 30 kV all the way up to 225 kV. The internal high switching frequency ranging from 100kHz to 200kHz facilitates the use small components, keeps the size small while delivering the desired power with minimal error (ripple).
The flexibility and the built-in features of the ECS make it not only the ideal driving source for the MBX Tubes but it can be used anywhere where short pulses of several Kilovolts need to be generated.