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Register a new userتصميم و تصنيع و توصيف سطوح بصرية لاكروية زجاجية مصنعة بطرائق تقليدية و غير تقليدية
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Publication date
2017
and research's language is
العربية
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ضمن إطار السعي لتوطين تقانات تصنيع بصري جديدة لتشمل تصنيع السطوح اللاكروية بالطريقة التقليدية المتوفرة لدينا و المسيطر عليها و طرائق تصنيع بصري غير تقليدية باستخدام التقانات و التجهيزات المتوفرة لدينا أيضاً، و ما يترتب على ذلك من توفير الإمكانية و الخبرة اللازمة لتصنيع أنواع جديدة من السطوح البصرية، تسمح بإمكانية تصاميم جديدة و تنفيذ نماذج أولية بسرعة مقبولة، مما يفتح باباً للبحث و التطوير في مجال الأنظمة البصرية، قمنا بدراسة مرجعية تشرح مفهوم السطوح البصرية اللاكروية و اعتبارات تصميمها مقارنة بالسطوح الكروية، و دراسة طرائق التصنيع البصري العالمية و حدودها و تطبيق نتائج هذه الدراسة المرجعية على التقانات المتوفرة لدينا لتوظيفها في تصنيع و قياس السطوح البصرية اللاكروية
As part of the endeavor to establish new optical manufacturing technologies, to include the manufacture of aspheric optical surfaces using traditional and non-traditional methods, a reference study that explains the concept of aspheric optical surfaces and their design considerations relative to spherical ones has been conducted. A study of international manufacturing methods and in our controlled manufacturing methods using the technologies and equipment available to us as well has been done. These studies provide the possibility and expertise to manufacture new types of optical surfaces. The results of these studies are applied on the technologies available to us for use in the manufacture and measurement of aspherical optical surfaces.
References used
G.M.Sanger, “The precision machining of optics”, Chapter 6 of “Applied Optics and Optical Engineering”, Vol.X, Editors: R.R.Shannon and J.C.Wyant, Academic Press, pp.253, table1, (1987)
C.F.Kranenberg, K.C.Jungling, “Subsurface damage identification in optically transparent materials using a nondestructive method,” Applied Optics, 7 (1994)
H.H. Karow, “Optical materials”, Chapter 1 of “Fabrication Methods for Precision Optics”, John Wiley & Sons, Inc, ISBN 0-471-51222-2, pp.1- 89, (1993)
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important rock generating hydrocarbon in Syria. And this
covers big parts o
f Syria and with different thickness, between
zero to 1100 m.
As part of the effort to localize the technology of the measurement of aspheric
optical surfaces within the available capabilities locally, we conducted a theoretical
study that includes the importance of these surfaces and design algorithm to achi
eve
better performance of optical systems, in addition to studying the most important
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to their design parameters that are based on fractal geometry. The long distance between
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used to design this antenna. The proposed antenna had been fabricated and measured in the
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and applying this antenna type, additionally we can study the change of antenna parameters
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As a result of the development of the use of reinforced Composites with fibers in
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additives to unsaturated polyester resin on the tensile properties of th
e samples prepared
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manufacturing, and also studying the effect of for the application of heat treatment
operations on the hardening of the unsaturated polyester and tensile properties after heat
treatment process the application in order to improve the properties of these blades.
Test samples were prepared containing ratios (1% - 1.5% - 2%) of methyl Etel
ketone piroxide MEKP and test results showed that the best ratio at 1.5%. While the heat
treatment results showed that the best values for tensile strength at break of the samples are
treated to a time of / 48 hours /.
Usually, a reflector dish with a loudspeaker or a microphone placed at
its focal point is used in directed acoustic systems to determine the
direction in which the acoustic wave is transmitted or received, in
addition to improve the gain in the ac
oustic transmission or reception.
As the parabolic reflector dish with an oval aperture has significant
advantages, and there is no relationship between parameters of this dish
and some variables that have direct influence on acoustical emission or
reception of this dish, this work is intended to find this relationship, and
this is achieved by carrying out a theoretical and experimental study to
find the optimum utilization of this dish in directed acoustic systems.
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