The traditional approach to optical system engineering separates the scene, optics, and detector as static entities, optimizing the design to meet subsystem specifications of aperture, field size, encircled energy, re...
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ISBN:
(纸本)9780819468154
The traditional approach to optical system engineering separates the scene, optics, and detector as static entities, optimizing the design to meet subsystem specifications of aperture, field size, encircled energy, read noise, dynamic range, and other electro-optical properties. The Scene-Based Sensor Model (SBSM) represents a different approach by simulating the scene, optics and detector as a cohesive model using commercially available optical ray-tracing software. The objects are modeled as temporally changing entities, with characteristics including reflectance, absorbance, fluorescence, and scattering. Likewise, the detectors are modeled with their properties of temporal noise, spatial non-uniformity, nonlinear gain, and offset drift. The end-to-end simulation produces "photons-to-bits" analysis applicable to a variety of optical systems. First results are illustrated with ray tracing simulation of moving fluorescent objects and laser induced breakdown spectroscopy.
A method of investigation of the optical properties of anisotropic materials using modulation of tho light polarization is presented. Measuring set-up was constructed and used to examine tho optical properties of inte...
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The authors developed a new advanced laser scanning range finder. The width gauge consists of a pair of these range finders. Conventional gauges cannot measure the effective width of complexly shaped plate edges. Howe...
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ISBN:
(纸本)0819406554
The authors developed a new advanced laser scanning range finder. The width gauge consists of a pair of these range finders. Conventional gauges cannot measure the effective width of complexly shaped plate edges. However, the gauge measures both side profiles of a plate and calculates the effective width with an accuracy of +/- 1.5 mm. This new type of width gauge has been developed and tested at the plate rolling mill at Kashima Steel Works of Sumitomo Metal Industries Ltd.
The optomechanical engineering for mounting lenses and mirrors in imaging systems is frequently driven by the pointing or jitter requirements for the system. A simple set of rules was developed that allow the engineer...
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ISBN:
(纸本)0819463671
The optomechanical engineering for mounting lenses and mirrors in imaging systems is frequently driven by the pointing or jitter requirements for the system. A simple set of rules was developed that allow the engineer to quickly determine the coupling between motion of an optical element and a change in the system line of sight. Examples are shown for cases of lenses, mirrors, and optical subsystems. The derivation of the stationary point for rotation is also provided. Small rotation of the system about this point does not cause image motion.
We first consider the potential impact of a technology that could deliver polished, accurate aspheric surfaces in a routine and automated manner. We then summarise the technical challenge, and present an appraisal of ...
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ISBN:
(纸本)0819445347
We first consider the potential impact of a technology that could deliver polished, accurate aspheric surfaces in a routine and automated manner. We then summarise the technical challenge, and present an appraisal of the performance of the novel 'Precessions' process, which is a major advance in this direction. We outline the design concepts behind the productionized CNC polishing machines which executes the process, and then describe the progress developing strategies to preserve form when polishing ground surfaces, and to correct form on both pre-ground and polished surfaces. Particular consideration is given to resolving the inherent difficulties of control of centres on rotationally-symmetric parts. We then report on experimental results achieved with the machines. Finally, we present our programme to extend the control-algorithms to handle fully free-form surfaces, and draw conclusions about the effectiveness and generality of the 'Precessions' technique.
A diffraction grating rhomb is an excellent candidate for both suppressing sideband instabilities in a free electron laser (FEL) and outcoupling the optical beam. A rhomb incorporating sinusoidal profile gratings exhi...
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DEMOS software was developed in 1973 - 1975 for design of optical systems (OS) with conventional and holographic elements. It was constantly improved because of the necessity to solve a wide range of tasks dealing wit...
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ISBN:
(纸本)0819418994
DEMOS software was developed in 1973 - 1975 for design of optical systems (OS) with conventional and holographic elements. It was constantly improved because of the necessity to solve a wide range of tasks dealing with display systems, lenses, multispectral systems for optical electronic units, and IR systems. A new version of DEMOS iii was developed in 1994, and is an integrated dialogue system for simulation and design of a wide range of OS on personal computers compatible with IBM-PC. This article deals with the new possibilities of DEMOS-PC, version 3.
The integration of diffractive optical elements (DOE) into an opticaldesign opens up new possibilities for applications in sensing and illumination. If the resulting optics is used in a larger spectral range we must ...
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ISBN:
(纸本)9781628412192
The integration of diffractive optical elements (DOE) into an opticaldesign opens up new possibilities for applications in sensing and illumination. If the resulting optics is used in a larger spectral range we must correct not only the chromatic error of the conventional, refractive, part of the design but also of the DOE. We present a simple but effective strategy to select substrates which allow the minimum etch depths for the DOEs. The selection depends on both the refractive index and the dispersion.
Our work is focused on the problem of a theoretical analysis of imaging properties and an initial opticaldesign of a three-element zoom optical system for laser beam expanders using lenses with a tunable focal length...
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ISBN:
(纸本)9781628417449
Our work is focused on the problem of a theoretical analysis of imaging properties and an initial opticaldesign of a three-element zoom optical system for laser beam expanders using lenses with a tunable focal length. Equations that enable to calculate basic paraxial properties and parameters of such optical systems are derived Finally, the derived equations are applied on an example of calculation of parameters of the three-element zoom system for the laser beam expander.
New catadioptric objectives have been developed with large bandwidths in the DUV, high numerical apertures (NAs), and small size. This can be achieved using a single glass material. designs are specifically optimized ...
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ISBN:
(纸本)0819454613
New catadioptric objectives have been developed with large bandwidths in the DUV, high numerical apertures (NAs), and small size. This can be achieved using a single glass material. designs are specifically optimized for loose alignment tolerances and ease of manufacturability. Applications include broad band DUV imaging and high resolution immersion imaging for industrial microscopy and life sciences.
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