Influence of small deformation of optical element surfaces on optical system imaging quality

2007 ◽  
Author(s):  
Zbynek Melich ◽  
Radek Melich
Keyword(s):  
Optical System ◽  
Small Deformation ◽  
Optical Element ◽  
Imaging Quality

scholarly journals Optical Design of Improved Offner Imaging Spectrometer

2021 ◽  
Vol 2112 (1) ◽  
pp. 012007
Author(s):  
Chong Song ◽  
Yong Huang ◽  
Yangdong Yan ◽  
Dongsen Cui ◽  
Gang Wang ◽  
...  
Keyword(s):  
Optical System ◽  
Optical Design ◽  
Annular Region ◽  
Practical Application ◽  
Imaging Spectrometer ◽  
Imaging Quality ◽  
Lens Position ◽  
Operating Wavelength ◽  
The Stability ◽  
System Characteristics

Abstract An improved Offner imaging spectrometer was proposed based on the optical system characteristics of Offner imaging spectrometer, which can ensure perfect imaging quality in a wider annular region. The operating wavelength of the improved Offner imaging spectrometer ranges from 900nm to 1700nm, and the magnification is 1. Improved Offner imaging spectrometer can be obtained by changing the meniscus lens position and further optimizing the design. The results indicate that the improved Offner imaging spectrometer can effectively improve compactness and lightweight, and reduce the difficulty of optical adjustment, which is conducive to the stability of practical application.

scholarly journals A proposed Mathematical Expression for Computer Design of Electrostatic Mirror

2012 ◽  
Vol 9 (1) ◽  
pp. 148-152
Author(s):  
Baghdad Science Journal
Keyword(s):  
Optical System ◽  
Focal Length ◽  
Mathematical Expression ◽  
Optical Element ◽  
Chromatic Aberration ◽  
Computer Design ◽  
Computational Investigation ◽  
Beam Path ◽  
Runge Kutta Method ◽  
Electrostatic Mirror

A computational investigation has been carried out on the design and properties of the electrostatic mirror. In this research, we suggest a mathematical expression to represent the axial potential of an electrostatic mirror. The electron beam path under zero magnification condition had been investigated as mirror trajectory with the aid of fourth – order – Runge – Kutta method. The spherical and chromatic aberration coefficients of mirror has computed and normalized in terms of the focal length. The choice of the mirror depends on the operational requirements, i.e. each optical element in optical system has suffer from the chromatic aberration, for this case, it is use to operate the mirror in optical system at various values of chromatic aberration to correct it in that system.

Application of Dynamic Optical Theory in Zoom System

2007 ◽  
Vol 364-366 ◽  
pp. 539-543
Author(s):  
Yuan Hu ◽  
Yue Gang Fu ◽  
Zhi Ying Liu ◽  
Tian Yuan Gao ◽  
Lei Zhang ◽  
...  
Keyword(s):  
System Design ◽  
Optical System ◽  
Image Plane ◽  
Image Motion ◽  
Object Image ◽  
Motion Group ◽  
Imaging Quality ◽  
Optical Theory

Dynamic optical is a theory which we can deduce the object-image conjugated rations of optical system by researching motion group in optical system. It can unify various formula and methods of optical system which have motion group. Zoom system is a typical dynamic optical system. This paper will discuss how to apply the dynamic optical theory to zoom system design. With dynamic optical theory, we can derive the image motion compensating formula and the trace curve of the image motion compensating group. The cam can be fabricated according to compensating curve, which can ensure the stabilization of image plane and keep imaging quality. Moreover, a example of 30× zoom system is presented, which proves that the dynamic optical theory has some practicability for zoom system design.

A simple optical system delivering a tunable micrometer pink beam that can compensate for heat-induced deformations

2015 ◽  
Vol 22 (4) ◽  
pp. 930-935 ◽  
Author(s):  
Ruben Reininger ◽  
Zunping Liu ◽  
Gilles Doumy ◽  
Linda Young
Keyword(s):  
Optical System ◽  
Heat Load ◽  
Optical Element ◽  
High Energy ◽  
Angle Of Incidence ◽  
Optical Elements ◽  
Source Distance ◽  
Energy Cutoff ◽  
Working Distance ◽  
Photon Source

The radiation from an undulator reflected from one or more optical elements (usually termed `pink-beam') is used in photon-hungry experiments. The optical elements serve as a high-energy cutoff and for focusing purposes. One of the issues with this configuration is maintaining the focal spot dimension as the energy of the undulator is varied, since this changes the heat load absorbed by the first optical element. Finite-element analyses of the power absorbed by a side water-cooled mirror exposed to the radiation emitted by an undulator at the Advanced Photon Source (APS) and at the APS after the proposed upgrade (APSU) reveals that the mirror deformation is very close to a convex cylinder creating a virtual source closer to the mirror than the undulator source. Here a simple optical system is described based on a Kirkpatrick–Baez pair which keeps the focus size to less than 2 µm (in the APSU case) with a working distance of 350 mm despite the heat-load-induced change in source distance. Detailed ray tracings at several photon energies for both the APS and APSU show that slightly decreasing the angle of incidence on the mirrors corrects the change in the `virtual' position of the source. The system delivers more than 70% of the first undulator harmonic with very low higher-orders contamination for energies between 5 and 10 keV.

scholarly journals ACHROMATIZATION OF THE VOLUME HOLOGRAPHIC OPTICAL ELEMENS

2020 ◽  
Vol 8 (1) ◽  
pp. 139-145
Author(s):  
Yury Ts. Batomunkuev
Keyword(s):  
Spectral Range ◽  
Optical System ◽  
Optical Element ◽  
Chromatic Aberration ◽  
Lens Model ◽  
Base Element ◽  
First Approximation ◽  
Two Component ◽  
Diffraction Structure ◽  
Analytical Expressions

The work considers a two-component holographic optical system having a base element in the form of a thick (volume) hologram optical element and intended for use in a given spectral range. The calculation of a two-component holographic system is carried out using formulas obtained from the mirror-lens model of the thick hologram element proposed by the author. It is indicated that according to the mirror model a thick hologram optical element is achromatic in a first approximation. For this the local period of the volume diffraction structure of the hologram element must be many times greater than the working wavelength, and the transverse dimensions of the element must be less than its thickness. Analytical expressions are given for the mutual correction of the chromatic aberration of the position of a thick hologram optical element and a relief kinoform element. The condition for achromatization of this two-component holographic system is formulated.

Effect of Thermally Induced Gradient Index on Imaging Quality of Aspherical Optical System

2020 ◽  
Vol 49 (1) ◽  
pp. 111001-111001
Author(s):  
姜东旭 Dong-xu JIANG ◽  
孙宝玉 Bao-yu SUN ◽  
李迎春 Ying-chun LI ◽  
林洁琼 Jie-qiong LIN ◽  
王冬雪 Dong-xue WANG ◽  
...  
Keyword(s):  
Optical System ◽  
Gradient Index ◽  
Thermally Induced ◽  
Imaging Quality

Crossed Interferometric Dispersive Spectroscopy

1990 ◽  
Vol 44 (1) ◽  
pp. 14-20 ◽  
Author(s):  
Jonathan V. Sweedler ◽  
Rafi D. Jalkian ◽  
Gary R. Sims ◽  
M. Bonner Denton
Keyword(s):  
Optical System ◽  
Optical Element ◽  
Simple System ◽  
Visible Spectroscopy ◽  
Common Path ◽  
Array Detectors ◽  
Novel Design

A novel design is described which combines dispersive and interferometric spectrometric instrumentation for ultraviolet visible spectroscopy, offering significant advantages in comparison to conventional spectroscopic configurations. The optical system incorporates the triangular common-path interferometer with an additional cross-dispersive element, allowing spectra to be obtained in a format compatible with rectangular CTD array detectors. The use of a cross-dispersive optical element reduces the distributive multiplex effects of interferometry in a rugged, compact, optically simple system.

Comprehensive analysis of imaging quality degradation of an airborne optical system for aerodynamic flow field around the optical window

2013 ◽  
Vol 52 (33) ◽  
pp. 7889 ◽  
Author(s):  
Chenglong Hao ◽  
Shouqian Chen ◽  
Wang Zhang ◽  
Jinhan Ren ◽  
Chong Li ◽  
...  
Keyword(s):  
Flow Field ◽  
Optical System ◽  
Comprehensive Analysis ◽  
Optical Window ◽  
Imaging Quality ◽  
Quality Degradation
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