Technology of integrating diffractive elements into an image-matrix hologram

Andrejs Bulanovs; Elena Kirilova; Vjacheslav Gerbreder

doi:10.1117/12.886468

11 May 2011 Technology of integrating diffractive elements into an image-matrix hologram

Andrejs Bulanovs, Elena Kirilova, Vjacheslav Gerbreder

Proceedings Volume 8074, Holography: Advances and Modern Trends II; 80740Y (2011) https://doi.org/10.1117/12.886468
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

Abstract

The given work investigates a way of integrating Diffractive Optical Elements (DOE) in the structure of a protective image-matrix hologram. An important feature of the suggested method is simplicity of realization by some modification of the frames exposure software and full hardware compatibility with image-matrix technology. Unlike other methods, the suggested one does not require changing the optical scheme between transitions from recording holographic frames area to the DOE ones and vice versa. Any shape of DOE in the hologram approximated to the size of the frame is available. A DOE frame cannot contain any part of a holographic region due to the different method of exposure. The minimal size of one DOE pixel is about 3 micrometer. The method under discussion allows for recording both binary (two-phase) and multilevel (multi-phase) DOE at corresponding calibrations of the employed Spatial Light Modulator (SLM). The method has passed an experimental approbation and is now used for embedding DOE into an image-matrix hologram as an additional security element.

Citation Download Citation

Andrejs Bulanovs, Elena Kirilova, and Vjacheslav Gerbreder "Technology of integrating diffractive elements into an image-matrix hologram", Proc. SPIE 8074, Holography: Advances and Modern Trends II, 80740Y (11 May 2011); https://doi.org/10.1117/12.886468

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KEYWORDS

Diffractive optical elements

Holograms

Holography

Spatial light modulators

Diffraction gratings

Optical recording

Photoresist materials

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