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The analysis of multilayer structure LCD screens internal re-reflection influence on the energetic reflection coefficient

Keywords:

D.I. Sobolev – Post-graduate Student, ITMO University (Saint Petersburg)
E-mail: ezkimos@gmail.com
A.V. Gurjanov – General Director of JSC «EDB «Electroavtomatika» named after P.A.Yefimov» (Saint-Petersburg)
E-mail: postmaster@elavt.spb.ru
A.V. Shukalov – Ph. D. (Eng.), First Deputy General Director, Main Designer, JSC «EDB «Electroavtomatika» named after P.A.Yefimov» (Saint-Petersburg)
E-mail: aviation78@mail.ru
I.O. Zharinov – Dr. Sc. (Eng.), Associate Professor, Head of UNC, JSC «EDB «Electroavtomatika» named after P.A.Yefimov» (Saint-Petersburg)
E-mail: igor_rabota@pisem.net
O.O. Zharinov – Ph. D. (Eng.), Associate Professor, Saint-Petersburg State University of Aerospace Instrumentation
E-mail: zharinov73@hotbox.ru


The problem of the analysis of multilayer structure LCD screens internal re-reflection influence on the energetic reflection coefficient is being studied. The reason of the screen structure internal re-reflection existence is external sun rays incidence on the screen plane which is a significant problem for the avionics item designing domain knowledge. The effects of reflection, refraction and transparency which may appear in the LCD screen multilayer structure and also its influence on the diffuse and specular reflection coefficients are being studied. There is a reflection and refraction optical multifilm system. There are some mathematical expressions which enable to evaluate the layer structure LCD screen internal re-reflection influence on the reflection coefficient values using matrix calculation of the thinlayer system energetic characteristics. There are some optical systems and mathematical expressions which define the indirect measurement rules for the diffuse and specular reflection coefficients which depend on the external illumination incidence level. From the given expressions we may suggest that the LCD screen optical element surface reflection energetic coefficient distribution can be determined from the number of effective layers, the optical element material refraction coefficient and the structure of the film itself (the number of layers, the film material refraction coefficients).
The factors analysis which influence the reflection coefficient show that the LCD screen external layer has the primary influence on the reflection coefficient value. From the obtained results we may suggest that the light even reflection from the LCD screen surface it must have an external layer with an anti-reflective coating.

References:
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