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Related Experiment Video

Updated: Jun 16, 2026

Procedure for the Transfer of Polymer Films Onto Porous Substrates with Minimized Defects

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Published on: June 22, 2019

Information transfer using thin transparent membranes.

C W Bates, R Morwood

|February 4, 2010

Summary

This study introduces a method to calculate the modulation transfer function (MTF) for image transfer through membranes. The information loss depends on phosphor light emission, optical contact, membrane properties, and refractive indices.

Area of Science:

Optics
Materials Science
Image Transfer

Background:

Thin transparent membranes are crucial for transferring images from phosphors to photosensitive materials.
Light scattering and diffusion within membranes cause information loss during image transfer.

Purpose of the Study:

To develop a method for calculating the modulation transfer function (MTF) of thin transparent membranes.
To analyze the factors influencing information loss during phosphor-to-photomaterial image transfer.

Main Methods:

Utilized a first-order expression for the angular flux distribution of phosphor-emitted energy.
Calculated the MTF by considering light scattering and diffusion through the membrane.

Main Results:

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Information loss is dependent on the phosphor's angular light distribution.
Optical contact, membrane thickness, and refractive index ratios significantly affect image transfer fidelity.
The model shows good agreement with experimental data.

Conclusions:

The developed model accurately predicts information loss in membrane-mediated image transfer.
Understanding these parameters is key to optimizing image transfer systems for applications like photographic emulsions and photocathodes.