تصميم عدة أقنعة بصرية و تنفيذها و تقييم أدائها لتقليل الأشعة الضوئية الراجعة عن الأجهزة البصرية و الإلكتروبصرية

Abstract EN

Optical retroreflection phenomena take place in optical instruments used as detectors, optical measurement devices and surveillance cameras.

Retroflection is considered as the principal weakness even when it takes place in small values as it enables observers to pinpoint the presence of these devices by observing their retroreflective signals.

Therefore, this issue became the main concern of designers of the optoelectronic instruments and surveillance cameras.

In this paper, methods used by researchers to diminish or even to eliminate the retro-reflective signal are considered.

Each of these methods has its advantage and disadvantages.

The optical masking method with its theoretical and experimental considerations is proposed.

The main objective of this method is to reduce the retro-reflective optical beams of getting out from optical and optoelectronic devices in use.

The possibility to the complete elimination of retro-reflective beams by means of optical masking is considered.

The maintenance of the image quality during surveillance and taking pictures, the measurement of the resolution, and the MTF function were maintained.