Hologram materials can be tested simultaneously

Measurement method developed by i-sft, measures multiple characteristics at the same time
A measurement method, developed by i-sft, allows several quantitative characteristics of holograms to be tested at the same time, even during the manufacturing stage of Bayer MaterialScience's photopolymer film Bayfol HX.

Light distribution, colour reproduction and colour dispersion can be tested as well as colour shift, taking into account the relevant dihedral angles and any possible section plane of the virtual image. Optical properties such as colour mixing and crosstalk in the 'eyebox' (where the eyes of a hologram viewer are supposed to be) can be analysed and verified. This provides insights into the quality of the image from the user's point of view and helps to optimise the production process of the holograms.

At the Electronic Displays Conference, in Nuremberg (25 February 2015), Dr Rainer Hagen from Bayer MaterialScience will present the properties of photopolymer film Bayfol HX, which enables volumetric high resolution holography for mass production. Tomasz Tarnowski, i-sft, will present the method, showing holographic images reproduced by such films can be analysed simultaneously in a qualitative and quantitative manner. It is possible, for example, to create an automated in-line set-up for testing printed holograms with reproducible tolerances.

The photopolymer film enables colour reproduction of 3D images and accurate method of light control. It can be used for new technologies, such as autostereoscopic 3D displays or energy efficient light solutions. Customised film rolls can be configured to a width of up to 1600mm. Bayer MaterialScience offers the whole process, including photopolymer manufacturing, laser recording, and film handling.

A study by research institute MarketsandMarkets predicts a compound annual growth rate of 30.23% fro 2014 to 2020 for holographic optical solutions, also applicable to 3-D displays among other applications. Global market volume is predicted to reach $3.57billion in 2020.

Caroline Hayes

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