Integral diffraction efficiency model for multilayer diffractive optical elements with wide angles of incidence in case of polychromatic light.
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TL;DR: It is shown that high diffraction efficiency can be realized by the surface micro-structure heights optimization, ensuring high modulation transfer function (MTF) for MLDOEs with wide angles of incidence in hybrid optical systems.
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Abstract: Oblique incidence is the normal working mode for diffractive optical elements (DOEs). The diffraction efficiency is very sensitive to the angle of incidence for multilayer diffractive optical elements (MLDOEs). Therefore, the design and diffraction efficiency analysis of MLDOEs with wide angles of incidence is of universal significance and practice. We propose an integral diffraction efficiency model for MLDOEs with wide angles of incidence in case of polychromatic light and then describe this corresponding optimal design in detail. It is shown that high diffraction efficiency can be realized by the surface micro-structure heights optimization, ensuring high modulation transfer function (MTF) for MLDOEs with wide angles of incidence in hybrid optical systems. On this basis, we present the optimal design process and simulation of an MLDOE working in visible waveband with optical plastic materials combination PMMA and POLYCARB as the two-layer substrates. The result shows that with this optimal design, we can achieve the maximum diffraction efficiency and minimum micro-structure heights, which makes the MLDOE design exactly over the entire waveband and wide angles of incidence especially for zoom hybrid optical system.
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Citations
Design and analysis of a hybrid optical system containing a multilayer diffractive optical element with improved diffraction efficiency.
Shan Mao,Jianlin Zhao +1 more
TL;DR: The results show that this design enables a diffraction-efficiency-improved MLDOE, and further ensures accurate image quality of the modulation transfer function and better optical system structure of the hybrid surveillance lens.
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Analytical and comprehensive optimization design for multilayer diffractive optical elements in infrared dual band
Shan Mao,Jianlin Zhao,Dahai He +2 more
TL;DR: In this paper, an analytical and comprehensive optimization design for multilayer diffractive optical elements (MLDOEs) in infrared dual-band for angular incidence is presented, which can realize high diffraction efficiency and optimal microstructures of MLDOEs.
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Glued diffraction optical elements with broadband and a large field of view
TL;DR: The design method could make possible the use of diffraction elements in different kinds of optical systems through gluing two single-layer diffractive optical elements together, and minimize the inner reflection and refraction.
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Diffraction optical elements with broadband and large incident angles
Hongfang Yang,Jing Xiao,Jun Chen +2 more
- 04 Dec 2020
TL;DR: In this paper, a manufacturing method that glued two diffractive optical elements together to reduce the stray light scattered into unwanted diffraction orders was presented, which enabled the system to realize a diffraction efficiency over 90% when the incident angle is no more than 54°.
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References
Effects of diffraction efficiency on the modulation transfer function of diffractive lenses
TL;DR: The integrated efficiency is shown to be the limiting value for the optical transfer function; in most cases it serves as an overall scale factor for the transfer function.
Design of a diffractive optical element for wide spectral bandwidth.
TL;DR: A new method for eliminating the chromatic aberration of a diffractive optical element (DOE) for wideband wavelengths and the design and simulation of a WBDOE for the visible spectrum are presented.
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Design of multilayer diffractive optical elements with polychromatic integral diffraction efficiency.
Changxi Xue,Qingfeng Cui +1 more
TL;DR: What the authors believe to be a new method for designing multilayer diffractive optical elements for wideband with consideration of polychromatic integral diffraction efficiency (PIDE) is presented and the maximum PIDE over the entire waveband for MLDOEs can be obtained.
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Multifunctional binary diffractive optical elements for structured light projectors.
Omri Barlev,Michael A. Golub +1 more
TL;DR: A set of diffractive optical elements for multiple-stripe structured illumination was designed, fabricated and characterized that has the potential for reducing complexity, number of optical components, power consumption and costs of structured light projectors in mobile and stationary 3D sensors.
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Two-element lenses for military applications
TL;DR: In this paper, the authors review the range of applications that can be satisfied using no more than two optical components, highlighting the specific benefits that aspheric and diffractive surfaces provide.
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