The Fine Guidance Sensor (FGS) is part of the science instrumentation for the James Webb Space Telescope (JWST). The FGS is required to operate at 37 K and provide the data needed to facilitate fine pointing and attit...
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ISBN:
(纸本)9780819482822
The Fine Guidance Sensor (FGS) is part of the science instrumentation for the James Webb Space Telescope (JWST). The FGS is required to operate at 37 K and provide the data needed to facilitate fine pointing and attitude stabilization necessary to meet the requirements of the mission's science and engineering operations. We describe here the selection of the proper opticaldesign form to meet requirements and its relative merits. The FGS has progressed with the successful completion of several key design reviews. The opticaldesign of the current stage will be discussed here in detail.
In this paper we discuss the design of Diffractive optical Elements that can be used for optical interconnections. Q uite general computer programs have been realized for the design and the validation of such optical ...
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ISBN:
(纸本)0819415871
In this paper we discuss the design of Diffractive optical Elements that can be used for optical interconnections. Q uite general computer programs have been realized for the design and the validation of such optical elements. As examples, in the paper we discuss the design of a 1 to 3, a 1 to 5 and a 1 to 4 interconnections, workingeither in reflection or in transmission.
We present details of opticaldesign, opto-mechanical design and testing of a visible-NIR imaging optical system for a Fourier transform spectrometer dedicated to astronomical application at the Mont Megantic Observat...
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ISBN:
(纸本)0819454613
We present details of opticaldesign, opto-mechanical design and testing of a visible-NIR imaging optical system for a Fourier transform spectrometer dedicated to astronomical application at the Mont Megantic Observatory (Observatoire du Mont Megantic, OMM, located south Quebec city, Canada). design considerations as well as testing and experimental results are presented.
We present the design of a compact, low-cost finger imager, to be used for enrolling and recognizing individuals based upon their finger ridge patterns. The optical system employs viewing beyond the critical angle and...
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ISBN:
(纸本)0819432652
We present the design of a compact, low-cost finger imager, to be used for enrolling and recognizing individuals based upon their finger ridge patterns. The optical system employs viewing beyond the critical angle and darkfield illumination for maximum image contrast. The optical system is afocal and telecentric, achieving corrected distortion with oblique viewing.
Data driven approaches have proven very efficient in many vision tasks and are now used for optical parameters optimization in application-specific camera design. A neural network is trained to estimate images or imag...
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ISBN:
(纸本)9781510654198;9781510654181
Data driven approaches have proven very efficient in many vision tasks and are now used for optical parameters optimization in application-specific camera design. A neural network is trained to estimate images or image quality indicators from the optical characteristics. The complexity and entanglement of such optical parameters raise new challenges we investigate in the case of wide-angle systems. We highlight them by establishing a data-driven prediction model of the RMS spot size from the distortion using mathematical or AI-based methods.
Genetic algorithm and its application in lens design is studied. A new algorithm is presented which includes a genetic algorithm (GA) and damped least square (DLS) method. The convergence property of GA in lens design...
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ISBN:
(纸本)0819422517
Genetic algorithm and its application in lens design is studied. A new algorithm is presented which includes a genetic algorithm (GA) and damped least square (DLS) method. The convergence property of GA in lens design is demonstrated. A GA. generated design is obtained without artificial intervention. The aberration correction has to be done by DLS, and the result is close to the starting configuration generated by GA.
In the article some methods for processing the information contained in a database are offered with the purpose of extraction of the knowledge, the experience and the intuition of the designers, coded in the database....
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ISBN:
(数字)9781510602861
ISBN:
(纸本)9781510602854;9781510602861
In the article some methods for processing the information contained in a database are offered with the purpose of extraction of the knowledge, the experience and the intuition of the designers, coded in the database. It gives much attention to the methods for determinating limit potential image quality of optical systems of various complexities.
Recent advances in the manufacturing of large (up to 62 mm diameter) glass blanks with axial index gradients of up to 0.20 enable significant performance gains in opticaldesigns. The new axial gradient material has a...
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ISBN:
(纸本)0819422517
Recent advances in the manufacturing of large (up to 62 mm diameter) glass blanks with axial index gradients of up to 0.20 enable significant performance gains in opticaldesigns. The new axial gradient material has an index and dispersion similar to SF (short flint) glasses, except the index varies continuously through the axis of the blank. The axial gradient material and numerous design examples using the new material will be presented.
In this paper, we present a new fisheye projection lens for 8 perforation 70 mm format film. The lens has an aperture of F/2.4 and a total field of view of 163 degree(s). We discuss design considerations, and compare ...
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ISBN:
(纸本)081941249X
In this paper, we present a new fisheye projection lens for 8 perforation 70 mm format film. The lens has an aperture of F/2.4 and a total field of view of 163 degree(s). We discuss design considerations, and compare predicted with measured performance data.
The basis of this work is a modification of the modern design of surgical binoculars based on substitution of mineral glasses with polymer lenses. Aberration analyses of the proposed systems is shown.
ISBN:
(纸本)9781510612082;9781510612075
The basis of this work is a modification of the modern design of surgical binoculars based on substitution of mineral glasses with polymer lenses. Aberration analyses of the proposed systems is shown.
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