Customized DOE Pattern Design

DOE: Diffractive Optical Element

Whether industry, biotechnology or image processing – numerous branches benefit from the application of diffractive optical elements (DOE). Their most characteristic feature is the complex surface structure: this special microstructure, a diffraction grating, deflects the course of light. That way, the beam of light can be modulated and adjusted properly in order to achieve the best possible results.

Even though this technique is mostly employed on laser beams, it works well with any kind of coherent light. In addition to that, DOEs hold many other merits such as their low weight or their flat shape. To exploit the full potential of DOEs, it is recommended to utilize customized DOE patterns that optimally accomplish their purpose.

ixellence: your expert in DOE patterns

Just a few companies possess the knowledge for developing such DOE patterns – ixellence is one of them. Having collected experience and done research in image processing for many years, we now profit from the thereby-gained knowhow. Beyond that, we collaborate with other companies, such as the DOE manufacturer HoloEye, in order to collectively advance the design of DOEs.

Our specialty: Perfects Submaps

In particular, we have specialized in the computation of Perfect Submaps (PSM). PSMs are characterized by their local uniqueness, meaning that in a PSM, each segment of the size u x v (a so-called Uniqueness window) appears only once. Patterns of this type prove beneficial for the design of stereoscopic DOEs, which is why they are primarily used in measurement technologies.

Properties of optimal PSMs with regard to stereoscopy and wave optics:

  • small uniquess window with a Hamming distance that is as large as possible
  • Isolatedness of the points of light
  • Toroidal unambiguous (TPSM) and symmetric
  • As large and as homogenous as possible

The brute force computation of such PSMs requires exponential computational cost, hence even supercomputers have not achieved satisfactory results in reasonable time. By continuously refining mathematical and algorithmic methods in cooperation with the University of Applied Sciences Wildau, we were able to develop more effective techniques and thus, meet this challenge.

Applying these advanced algorithms on clusters of high-performance computers, we efficiently compute TPSMs for our customers. Since our TPSMs feature all the desired properties, they stand out as compared to the products of competitors. Consequently, they prove to be an excellent basis for effective and high-quality DOEs.

Profit from our latest findings and profound expertise: let us know your requirements and we will design your customized DOE pattern.