• Advanced Industrial SCIence
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• v.2 no.4
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• pp.28-35
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• 2023

In this paper, a diffractive optical element was designed to create lighting patterns that satisfy the requirements of adaptive headlight systems for normal road mode, highway mode, and wet road mode, and this was rendered into a GDSII stream format file.To verify the effectiveness of the light distribution formed by the diffractive optical elements and the realization of white light, simulations based on Field Tracing and Ray Tracing were conducted, confirming the satisfaction of position and luminance requirements at the transformation beam measurement points. Based on this research, it is anticipated that the implementation of adaptive headlights would be possible, enabling the reproduction of luminance contrast and the creation of a simple-structured adaptive headlight system.

• Proceedings of the Optical Society of Korea Conference
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• 2007.07a
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• pp.157-158
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• 2007

• Proceedings of the Optical Society of Korea Conference
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• 2005.07a
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• pp.42-43
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• 2005

• Proceedings of the Optical Society of Korea Conference
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• 2008.02a
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• pp.159-160
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• 2008

• Korean Journal of Optics and Photonics
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• v.4 no.3
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• pp.323-329
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• 1993

In this paper, dependence of the diffraction efficiency upon incident light intensity is studied. The conductivity ratio, which is dependent upon the incident light intensity, changes the static electric field in a crystal. This change of the static electric field modulates the refractive index via linear electro-optic effect. And the change of the refractive index affects the diffraction efficiency. It is found that experimental results with $Fe:LiNbO_3$ crystals are in good agreement with the theory.

• Applied Microscopy
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• v.37 no.3
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• pp.199-208
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• 2007

We have made an optical device to study the wave optics phenomena, such as image and diffraction pattern, constructive and destructive interference, by direct operation of laser beam and optical lenses. It consists of laser beam, goniometer, objective lens, intermediate lens, projection lens, CCD system, and computing system. As a result of the performance test, we were able to magnify samples up to 44 times with the resolution of about $5{\mu}m$. It is expected to help EM users understanding more easily principles of transmission electron microscopy (TEM).

• Proceedings of the Optical Society of Korea Conference
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• 2009.02a
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• pp.413-414
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• 2009

• Optical Science and Technology
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• v.15 no.2
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• pp.31-35
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• 2011

• Proceedings of the Optical Society of Korea Conference
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• 1998.08a
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• pp.178-179
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• 1998

• Proceedings of the Optical Society of Korea Conference
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• 1998.08a
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• pp.230-231
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• 1998