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Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

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Digitally designed holographic optical element for light field displays.

Boaz Jessie Jackin, Lode Jorissen, Ryutaro Oi

|August 2, 2018

Summary

Researchers developed a new method for fabricating holographic concave micro-mirror arrays. This innovation enables 3D light field displays without requiring additional collimation optics, overcoming size limitations.

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Area of Science:

Optics and Photonics
Display Technology
Holography

Background:

Concave micro-mirror arrays as holographic optical elements are key for projector-based light field displays.
Current methods require parallel optical axes, necessitating collimation optics and limiting display size.

Purpose of the Study:

To propose a novel method for fabricating holographic concave micro-mirror array sheets.
To demonstrate a solution that eliminates the need for collimation optics in light field displays.

Main Methods:

Fabrication of holographic concave micro-mirror array sheets using a new method.
Integration and testing of these arrays in a projector-based light field display system.

Main Results:

Successful 3D light field reconstructions achieved with dimensions of 20 cm x 10 cm and 6 cm depth.
Demonstration of a functional light field display using a conventional projector without collimation optics.

Conclusions:

The new fabrication method for holographic concave micro-mirror arrays overcomes previous size limitations.
This approach simplifies light field display systems by removing the need for collimation optics, paving the way for more compact and efficient displays.