Fast THz Mail Scanner
Fast THz Mail Scanner designed by Orteh Company (in cooperation with Institute of High Pressure Physics, ul. Sokolowska 29/37, 01-142 Warsaw, POLAND - prof. Wojciech Knap) is very fast and efficient THz postal scanning system used on the conveyor belt with simple and intuitive software.
Fast THz Mail Scanner system allows to verify the content of different envelopes using THz radiation. It is an extremely fast device in comparison with all other known in the world systems. It is based on the innovative combination of exceptional electronic solutions, modern optical elements and intuitive software program.
The non-ionizing character of the THz radiation makes THz scanning very powerful and eagerly developed technique. Mostly a single point-like source and single detector is used for THz imaging. Additionally, to reduce extremely long scanning time, rotating or vibrating mirrors can be used but it is still not enough for fast mail scanners.
The unique device called Fast THz Mail Scanner gives the possibility of very short scanning time due to the use of three lines of detectors and especially designed diffractive optical structure that is shaping THz beam coming from the point-like source. Extremely advanced optical element is transforming the point VDI source radiation into three line segments created at particular distance behind the optical structure. Such beam is illuminating the envelope and just under it there is the matrix of detectors. The registering system consists of 3 lines of 48 single detectors each. To ensure proper functioning and data flow such matrix is divided into 4 modules (each containing 3 lines of 12 single detectors). This advanced solution allows for scanning time of one envelope about only 1 second.
We hope that working with Fast THz Mail Scanner will become a real pleasure and that you will discover many possibilities while THz scanning of mails. We also do hope that this device and delivered software will facilitate you your work with detection of dangerous item hidden in mails.
We did our best to let you enjoy the work with THz mail scanning.
Do not hesitate to contact us if you have any questions:
thzscanner@orteh.pl
Fast THz Mail Scanner is available for you as a ready commercial device or depending on your needs you may select particular set of different modules to create individual setup. For particular applications Orteh Company can help you to choose the best configuration for your needs.
We offer different modules with detectors, modules for aggregation and consolidation data coming from detectors and unique software which can be adjusted for particular applications.
The following modules can be arranged in different configurations (if you need advice please contact us for help):
Module TZA_v1:
- printed circuit board with mounted detectors having specified topology:
» line of 12 detectors;
» matrix of 3 lines having 12 single detectors each;
» matrix of 48 detectors (7 x 7 without one detector in the corner);
- different topologies are designed and manufactured on customer’s request (customization to your needs).
Module TZB_v1:
- analogue and digital communication module for THz detectors service;
- 12 channels;
- parallel readout;
- 200kHz sampling;
Module TZC_v1:
- consolidation and aggregation of data coming from TZB_v1 modules;
- maximally 12 TZB_v1modules can be joined;
- communication with PC over USB port;
- linear encoder sensor position of conveyor belt;
- VDI source controller.
Additionally, the unique and especially dedicated software for TZC_v1 module for FPGA integrated circuit and for PC was designed. The standard licence is available off-the shelf, while all additional configurations can be designed on customer’s request.
If you have any special requests please do not hesitate to contact us – we are waiting to help you with proper device configuration: thzscanner@orteh.pl
Design of non-conventional optical elements forming a desired light distribution
Orteh can design a diffractive element or a set of diffractive and/or refractive elements that form a desired light distribution at a specified distance. The main problem in such projects is to obtain a uniform and stable output light intensity distribution. There is always a trade-off between the diffractive efficiency and the complexity of the final device. The feature size of the designed element and the fabrication price of multi-phase-step elements are also very important factors to be considered.
Diffractive structure forming a desired light distribution (pictures taken with white incident light)
Preparation and optimization of data for EBL etching process
Our experience in manufacturing complex diffractive structures using Electron Beam Lithography (EBL) method has enabled us to achieve complex structures which can have a minimal feature size of 0.3 micron.
A hologram encoded as a 2-step phase
only diffractive structure
Optimization of image recognition algorithms for optical inspection systems
