Polarization Conversion System

What is a Polarization Conversion System?

The PCS is a low cost, compact, monolithic component that polarizes up to 90% of incident light, allowing new levels of freedom in optical design and efficiency.

We make the worlds most compact and highest efficiency PCS.

How it Works

ImagineOptix PCS solutions use thin film polarizing beam splitters (ultra-efficient GPH films) to separate a single incident light beam into two beams with opposite circular polarizations. Our patented MTR film then converts one of those polarizations to match the other polarization. The output is up to an astounding 90% of light in the desired polarization state.

PCS Structure:

  • No air gaps between elements
  • Cross-section is along the long direction of the lenslets
  • Diffraction occurs within the plane of figure

Technology Comparison

Traditional PCS ImagineOptix PCS
Conversion Efficiency 55-65% 75-85%
Elements 4 Elements and Multiple Assembly Alignments Single Monolithic Element
Etendue Doubling of a Etendue Only 50-75% Increase in Etendue


Is it possible to recover and use the lost polarization in our optical system?

Yes. Our PCS technology is designed for this type of recovery.
In the direction of diffraction, it will double the output angle and double the etendue of the system.
No. This is because the PCS changes ray angles and will introduce aberrations and significant scatter to the output.
This is possible, but if the increase in angle is not accounted for in the optical design, the performance will be significantly lower than expected. In general, we recommend that the PCS is designed at the same time as the rest of the optics to ensure excellent performance.

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