A slow-scan, cooled CCD camera system, similar to that used for astronomical observations, was constructed at Toulouse Observatory and used for testing CCD chips. Several devices were tested extensively. This paper de...
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A slow-scan, cooled CCD camera system, similar to that used for astronomical observations, was constructed at Toulouse Observatory and used for testing CCD chips. Several devices were tested extensively. This paper describes the design and performance of some Thomson-CSF solid-state area-array CCD sensors. These sensors use a frame-transfer organization adapted to operate in a double-interlaced-field readout mode with a memory zone (sensor TH 7861) or adapted to operate in a single-field mode without a memory zone (sensors TH 7882, TH 7883, TH 7884). We briefly describe the system and the evaluation of the photometric performance of these chips, including quantum efficiency, readout noise, transfer efficiency, linearity, dark current, and field uniformity. Some projected developments of Thomson-CSF chips for scientific applications, such as the TH X31156 (1024 X1024 pixels) and the buttable TH 7882 (TH X31157), are also presented.
This conference proceedings contains 26 papers covering the following major subjects: opticaldesign, opticalengineering and manufacturing optical systems and their applications and diffraction phenomena.
ISBN:
(纸本)0892527145
This conference proceedings contains 26 papers covering the following major subjects: opticaldesign, opticalengineering and manufacturing optical systems and their applications and diffraction phenomena.
The use of narrow band filters (NBF) to demonstrate various architectures for optical computing is currently of interest. We are performing a systematic search of standard narrow band filter/substrate designs for arra...
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ISBN:
(纸本)0892527137
The use of narrow band filters (NBF) to demonstrate various architectures for optical computing is currently of interest. We are performing a systematic search of standard narrow band filter/substrate designs for arrangements optimized with respect to several criteria;we are concerned with the variation of switching power and time with spacer layer thickness, overall reflectivity, and substrate thermal conductivity. Our coatings are evaporated in a dedicated box coater and are optically monitored with the help of a remote laser. Work on design and uniformity is in progress.
Many papers have been written on the design of gradient-index optical systems. The purpose of this paper is to review current technology in gradient-index materials research and to review the types of materials that a...
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ISBN:
(纸本)0892527145
Many papers have been written on the design of gradient-index optical systems. The purpose of this paper is to review current technology in gradient-index materials research and to review the types of materials that are currently available. These include glass, materials made by ion exchange, chemical vapor deposition, sol-gel, and phase-separated techniques, gradient-index germanium, zinc-selenide/zinc sulfide, and gradients in plastics.
A null-lens design approach for centrally obscured components is described. This optimization method, which explicitly takes advantage of the obscuration, can achieve improved wavefront quality of the null test for a ...
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ISBN:
(纸本)0892527145
A null-lens design approach for centrally obscured components is described. This optimization method, which explicitly takes advantage of the obscuration, can achieve improved wavefront quality of the null test for a given level of lens complexity than a design approach that does not take advantage of the obscuration. The fabricated aspheric part, while likely to be different in shape from that predicted by the null test by a constant phase factor, will still allow satisfactory performance of the system.
The advantages of solid state laser scanning are explained and contrasted with the conventional software-intensive approach to machine vision. A new laser gauge design is described and applications are explored.
ISBN:
(纸本)0892527145
The advantages of solid state laser scanning are explained and contrasted with the conventional software-intensive approach to machine vision. A new laser gauge design is described and applications are explored.
This conference proceedings contains 75 papers, one of which is in abstract form only. The major subjects are the following: currentdevelopments at the Multiple Mirror Telescope (MMT);National New Technology Telescop...
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ISBN:
(纸本)0892526637
This conference proceedings contains 75 papers, one of which is in abstract form only. The major subjects are the following: currentdevelopments at the Multiple Mirror Telescope (MMT);National New Technology Telescope (NNTT);site testing;high flying (space) telescopes;arrays and active optics;enclosures, structures, and supports;controls and pointing;optics manufacture, opticaldesign and testing.
Adhesion and strain are two important physical properties which determine the success or failure of thin-film coatings in optical applications. In this paper we describe the design and operation of a dynamically loade...
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ISBN:
(纸本)0892527137
Adhesion and strain are two important physical properties which determine the success or failure of thin-film coatings in optical applications. In this paper we describe the design and operation of a dynamically loaded scratch tester for making measurements of relative adhesive strength, and a modulated transmission ellipsometer for measuring total and internal strain. Numerous examples for coating/substrate systems of interest to optical applications are given.
Optics Toolbox described in this paper is actually two programs in one: it is a powerful relational database system with twenty-one search parameters, four search modes, and multi-database support, as well as a first-...
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ISBN:
(纸本)0892527145
Optics Toolbox described in this paper is actually two programs in one: it is a powerful relational database system with twenty-one search parameters, four search modes, and multi-database support, as well as a first-order opticaldesign expert system with a rule interpreter which has full access to the relational database. The authors hope that Optics Toolbox can grow into a useful tool. For an industry that is losing its experts to retirement, Optics Toolbox could become a facility for keeping that knowledge in-house, and passing it on to junior designers. For design teams plagued with disorganization, Optics Toolbox could become a central filing system. And for the busy designer, Optics Toolbox can increase productivity by providing good starting points.
A satisfactory bifocal contact lens has not yet reached the marketplace because of deficiencies in the present designs. The two-zone concentric design allows both the near and far images to be present simultaneously, ...
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ISBN:
(纸本)0892527145
A satisfactory bifocal contact lens has not yet reached the marketplace because of deficiencies in the present designs. The two-zone concentric design allows both the near and far images to be present simultaneously, however the image quality is not very good. Recently several new bifocal contact lenses with multiple zones have been suggested. This paper presents computer calculations of the image quality of several of these new designs. The zone-plate design, with an intermediate blaze angle, gives the best image quality of the lenses that were examined.
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