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检索条件"任意字段=Conference on Optical Modeling and Performance Predictions"

共 283 条记录，以下是1-10 订阅

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Proceedings of SPIE: optical modeling and performance predictions

Proceedings of SPIE: Optical Modeling and Performance Predic...

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optical modeling and performance predictions

The proceedings contains 29 papers from the conference of SPIE: optical modeling and performance predictions. The topics discussed include: error budget for optomechanical modeling;optical performance as a function of dynamic mechanical loading;integrated optomechanical analysis of adaptive optical systems;opto-thermo-mechanical analysis for the FAME observatory;simulation of the thermal effects in diode-pumped rod laser;integrated modeling tools for large ground-based optical telescopes;and linear optical model for a large ground-based telescopes.

关键词： optical systems

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Efficient and versatile 4 direction LED-based automotive lighting systems advances in optical modeling and performance predictions 14

Efficient and versatile 4 direction LED-based automotive lig...

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conference on optical modeling and performance predictions XIV

作者： Jeong, Seok-ho Kwon, Eun-bi Hyundai Mobis Adv Lamp Engn Team 17-2Mabuk Ro 240Beon Gil Yongin 16891 Gyeonggi Do South Korea

ISBN: (纸本)9781510679184;9781510679191

Existing tail surface lighting technology is expensive and only irradiates LED light from the front, requiring multiple optical parts and air gaps for effective light diffusion. The 4FLED technology, which stands for "4 Faces LED," offers a cost-effective solution by providing 360-degree light irradiation from four directions. This reduces the need for additional optical parts and spaces, saving costs. Two wavelengths, normal red (614 nm) and super red (630 nm), are available, offering expanded choices for customers. The 4FLED system aligns with global design trends by reducing costs while maintaining high efficiency and design flexibility, appealing to many customers. It has been proven suitable for vehicles through ECE Regulation tests and high heat resistance reliability tests.

关键词： LED high-brightness automotive lamp rear signal lighting homogeneous lamp diffused module power saving function integration

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Habitable World Observatory modeling optical and Metrology Models, and performance predictions 14

Habitable World Observatory Modeling Optical and Metrology M...

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conference on optical modeling and performance predictions XIV

作者： Lou, John Z. Redding, David C. Basinger, Scott Dube, Branden Tesch, Jonathan Kee, Andy Nissly, Carl Troy, Mitchell CALTECH Jet Prop Lab Pasadena CA 91109 USA

ISBN: (纸本)9781510679184;9781510679191

The Habitable Worlds Observatory (HWO) is a future NASA flagship mission which will use a segmented telescope and coronagraphic instruments to discover and characterize exoplanets, including exoEarths - Earth-like planets orbiting other stars. HWO will require extraordinary optical stability, with wavefront drift performance measured in the picometers. This paper explores how active control of the telescope optics, using metrology systems that include laser distance gauges, segment edge sensors, and picometer precision actuators, can provide the needed telescope stability. Together with wavefront sensing and deformable mirrors in the coronagraph, this approach can control the entire coronagraphic beam train, to stabilize the electric field in the coronagraph. The HWO Technology Assessment Group is developing three "Exploratory Analytic Cases," which are conceptual designs for HWO that differ in some aspects, to provide a basis for detailed analysis. This paper addresses EAC1, a deployed-aperture concept that draws on JWST heritage. EAC1 uses 19 1.8-meter hexagonal segments to form its off-axis Primary Mirror (PM), as sketched in Figure 1. EAC2 will use fewer, larger "keystone" segments in a non-deployed off-axis PM configuration, and EAC3 will be a larger, on-axis deployed telescope using smaller keystone shaped segments.

关键词： HWO segmented telescope laser metrology edge sensor WFSC coronagraph contrast

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Integrated modeling tools for large ground based optical telescopes

Integrated modeling tools for large ground based optical tel...

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conference on optical modeling and performance predictions

作者： Angeli, G Segurson, A Upton, R Gregory, B Cho, M AURA Inc New Initiat Off Tucson AZ USA

ISBN: (纸本)0819450510

Diffraction-limited performance of 30-m class telescopes requires the integration of structural, optical and control systems to sense and counteract real time disturbances to the telescope. Accurate simulation of an integrated telescope model is essential for optical performance estimation and design validation. Our approach to integrated time domain modeling of large telescopes is to interface commercially available structural, optical and control modeling software packages. The model architecture, data structures, and the interfacing tools of the simulation environment are presented. Preliminary simulation results of a 30-m class telescope subject to wind load and a ground layer phase screen are presented.

关键词： active optics telescope control telescope performance prediction integrated modeling

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optical design including characteristics of manufactured nanostructures

Optical design including characteristics of manufactured nan...

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conference on optical modeling and performance predictions VI

作者： Waechter, Christoph Mueller, Martin Foerster, Erik Oliva, Maria Michaelis, Dirk Fraunhofer Inst Appl Opt & Precis Engn D-07745 Jena Germany

ISBN: (纸本)9780819496904

Micro- and nanostructures enable specific optical functionalities, which rely on diffractive effects or effective medium features, depending on pattern dimension and wavelength. performance predictions of optical systems which make use of nanostructured materials require having an accurate description of these materials ready to hand within the optical design. At the one hand, nanostructure characteristics which result from rigorous electromagnetic modeling can be used for the optical design. At the other hand, manufactured nanostructures may deviate from their idealized geometry, which will affect the performance of the optical system, wherein these artificial structures will be used. Thus, detailed optical characterization of the micro- or nanostructure functionality is prerequisite for accurate optical design and performance prediction. To this end, several characterization techniques can be applied depending on the scope of the optical design, finally. We report on a general route to include all accessible and required optical information about the nanostructured material within a corresponding model of the nanostructure as a specific optical component which can be used within a ray-trace engine, finally. This is illustrated by a meta-material with asymmetric transmission properties in some more detail.

关键词： optical modeling material characterization nanostructures

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Optomechanical analysis of diffractive optical elements 7

Optomechanical analysis of diffractive optical elements

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conference on optical modeling and performance predictions VII

作者： Michels, Gregory J. Genberg, Victor L. Sigmadyne Rochester NY 14611 USA

ISBN: (纸本)9781628417432

Diffractive optical elements are important components to many high precision optical systems. When such systems are subjected to mechanical loading these optical components yield performance degradation contributions quite different from non-diffractive optical components. It is of interest to predict by analysis such performance degradations for the purposes of development of the optomechanical design for relevant optical systems. The developments of this paper are to characterize the changes in phase due to such deformations as predicted by the finite element method and represent them in optical analysis alongside characterizations of surface shape changes.

关键词： Diffractive optics phase surfaces integrated analysis finite element analysis optomechanics

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Transient Simulation of High-Power Dynamical-Thermoelastic-optical-Systems 12

Transient Simulation of High-Power Dynamical-Thermoelastic-O...

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conference on optical modeling and performance predictions XII

作者： Hahn, Luzia Eberhard, Peter Univ Stuttgart Inst Engn & Computat Mech Pfaffenwaldring 9 D-70569 Stuttgart Germany

ISBN: (纸本)9781510654150;9781510654143

The system performance of high-precision optical systems is highly sensitive to transient mechanical and thermal disturbances. In order to precisely predict a systems operating performance these disturbances need to be modeled, simulated, and analyzed. In this work, a numerical method is presented which allows for the consideration of transient mechanical rigid body motions, mechanical and thermal elastic deformations, and thermally induced refraction index changes in the transient simulation of optical systems operated with lasers.

关键词： GRIN ray tracing dn/dT thermoelastic-optical system dynamical-optical system elastic multi-body system finite element method Gaussian beam transient analysis

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Integrated Optomechanical Analysis and Testing Software Development at MIT Lincoln Laboratory

Integrated Optomechanical Analysis and Testing Software Deve...

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conference on optical modeling and performance predictions VI

作者： Stoeckel, Gerhard P. Doyle, Keith B. MIT Lincoln Lab Lexington MA 02420 USA

ISBN: (纸本)9780819496904

Advanced analytical software capabilities are being developed to advance the design of prototypical hardware in the Engineering Division at MIT Lincoln Laboratory. The current effort is focused on the integration of analysis tools tailored to the work flow, organizational structure, and current technology demands. These tools are being designed to provide superior insight into the interdisciplinary behavior of optical systems and enable rapid assessment and execution of design trades to optimize the design of optomechanical systems. The custom software architecture is designed to exploit and enhance the functionality of existing industry standard commercial software, provide a framework for centralizing internally developed tools, and deliver greater efficiency, productivity, and accuracy through standardization, automation, and integration. Specific efforts have included the development of a feature-rich software package for Structural-Thermal-optical performance (STOP) modeling, advanced Line Of Sight (LOS) jitter simulations, and improved integration of dynamic testing and structural modeling.

关键词： Integrated optics Software development Data modeling Error analysis Neodymium Standards development Control systems performance modeling Thermography Systems modeling

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Group error modeling in optical tolerancing and alignment 11

Group error modeling in optical tolerancing and alignment

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conference on optical modeling and performance predictions XI

作者： Youngworth, Richard N. Romero, Ryan J. Riyo LLC Boise ID 83701 USA Ball Aerosp Boulder CO USA

ISBN: (纸本)9781510637757

Tolerancing and alignment steps in optical engineering involve modeling errors to the system. Typical approaches involve perturbing the optical system model to determine sensitivities. In this paper, we provide a combinatorial group error approach using base gradient and Hessian for the figure of merit corresponding to a perturbed optical system. We provide key formulas and principles of the method versus the rigor of showing robust implementation. Thus, the key expressions for grouping and combining the errors are given in a general form that can be easily extended to include additional basic sets of optical system errors. The method described here can be applied for any type of error given its constituent derivatives, and single surface errors. The paper includes examples and high-level comments on robust implementation of the principles shown.

关键词： optical alignment optical assembly optical fabrication optical tolerancing compensators

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Unified optomechanical modeling: Stabilizing the line-of-sight of an IR imager 7

Unified optomechanical modeling: Stabilizing the line-of-sig...

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conference on optical modeling and performance predictions VII

作者： Hatheway, Alson E. Alson E Hatheway Inc Pasadena CA 91107 USA

ISBN: (纸本)9781628417432

A common mechanical failure in optical systems is inadequate stiffness in the supporting structure. Stiffness is crucial for maintaining the alignment of the optical elements and achieving adequate optical performance. It is the responsibility of the mechanical engineer to provide adequate stiffness in the mechanical design. optical engineers assume that their large-displacement non-linear codes are required to analyze the perturbations caused by mechanical deflections. However, the permitted deflections of the optical elements are usually quite small, on the order of microns for structures of meter-sized dimensions. For perturbations of this magnitude it may be shown that a non-linear solver is not required for engineering accuracies. In fact, it can be argued that the optical functions are more linear than the solid mechanics functions, of which the finite element method itself is but a linear simplification. Unified optomechanical modeling provides a vehicle for tracing offending image motions to particular optical elements and their supporting structure. The unified modeling method imports the optical elements' imaging properties into a finite element structural model of the optical system. It convolves the elements' motions and their optical properties in a single optomechanical modeling medium, unifying them. This provides the engineer with a tool that discloses each element's contribution to the offending motions of the image on the detector. This paper presents the theory of unified optomechanical modeling as applied to the optical line-of-sight in a Nastran(1) finite element model. The steps used in developing a unified optomechanical model are described in detail. Comparisons of the unified modeling technique to both analytical and empirical validation studies are shown.

关键词： unified modeling Ivory image motion line-of-sight

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