An original method to enable the exact solution for the noncemented two-lens objective by means of any number of simultaneous non-linear equations is described. The method is limited to spherical surfaces without dece...
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ISBN:
(纸本)0819432652
An original method to enable the exact solution for the noncemented two-lens objective by means of any number of simultaneous non-linear equations is described. The method is limited to spherical surfaces without decentrations. Separations and refractive indices of glasses are fixed. Ail curvatures of surfaces are indirectly determined in the final stage. The typical meridional aperture aberrations deal with aplanatic and achromatic conditions. Essence of the method relies on formulation functions which contain trigonometric expressions and are nested up to certain depth. The method uses the advanced professional mathematical software which is indispensable for serving the non-linear system of equations. Numerical examples confirm the helpfulness of the method.
In this paper, a new method used to calculate the Zernike coefficients of wave aberration from ray aberration and from finite shearing of wavefront is proposed. The simulated results are compared with the least square...
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ISBN:
(纸本)0819415871
In this paper, a new method used to calculate the Zernike coefficients of wave aberration from ray aberration and from finite shearing of wavefront is proposed. The simulated results are compared with the least squares fitting method, and indicate that the Zernike coefficients of wave aberration can be calculated as accurately with the new method as with the least squares fitting method, but with less computation and operation.
When testing an aspheric wavefront with any digital interferogram evaluation method, like phase shifting interferometry, Fourier interferometry, or with a spatial carrier analysis, there is a limit to the maximum degr...
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ISBN:
(纸本)0819415871
When testing an aspheric wavefront with any digital interferogram evaluation method, like phase shifting interferometry, Fourier interferometry, or with a spatial carrier analysis, there is a limit to the maximum degree of asphericity if a null compensator is not used. An analysis of this limitation using different interferogram interpretation methods are described.
A miniaturized instrument for systematic planetary mineralogy is presented, and the opticaldesign of the component parts is discussed. The instrument combines the following capabilities: wide field color imaging, con...
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ISBN:
(纸本)0819445347
A miniaturized instrument for systematic planetary mineralogy is presented, and the opticaldesign of the component parts is discussed. The instrument combines the following capabilities: wide field color imaging, confocal imaging at two different resolution/range levels, reflectance spectroscopy in the 400-2500 nm region with a resolution of 10 nm, and Raman spectroscopy over 4000 cm(-1) with an average resolution of 3.3 cm(-1). The instrument can also serve as an expandable platform for adding fluorescence spectroscopy, or for examining samples from a distance of several meters while using the same spectrometer.
The installation of optical fibres for communication purposes is increasingly being carried out using a blowing technique. This study reviews the basis of the currentdesign methods for this technique and proposes a n...
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The installation of optical fibres for communication purposes is increasingly being carried out using a blowing technique. This study reviews the basis of the currentdesign methods for this technique and proposes a new method based on a more traditional fluid mechanics approach. The method is used to demonstrate how far optical fibres can be blown and the stress levels likely to be encountered by them at various positions within their journey. The method will allow for future technological developments to be simulated by allowing for air drag on the fibre and the constraining tube wall to be treated differently.
Two-component zoom systems are a basic part of all zoom systems. The first zoom systems appeared at the end of the 19th century in Germany. Dunouer1 has shown the possibility of the creating two-component zoom convert...
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A binocular extends the range of human vision. Binoculars enable the user to see objects at greater distances or, alternatively, to see greater detail in distant objects. In failing light, binocul are used to detect o...
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ISBN:
(纸本)0819402044
A binocular extends the range of human vision. Binoculars enable the user to see objects at greater distances or, alternatively, to see greater detail in distant objects. In failing light, binocul are used to detect objects that the naked eye cannot detect. Binoculars also extend the range of stereo vision of the user; this application is primarily of interest in military fire control.
A uv-curing 'cold' blocking adhesive has been developed by Loctite Corporation for use with the Opticam SM. The adhesive is a significant advance in the lens blocking process, as it eliminates heat-induced blo...
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ISBN:
(纸本)0819409251
A uv-curing 'cold' blocking adhesive has been developed by Loctite Corporation for use with the Opticam SM. The adhesive is a significant advance in the lens blocking process, as it eliminates heat-induced blocking strain; the most significant problem encountered with current hot pitch blocking methods. The new cold blocking adhesive is complemented by a new Kennametal lens blocking adapter tool and chucking system. The tooling offers substantially improved lens adapter to machine alignment and transfer; at considerably lower cost. The lenses are deblocked in a heated water and detergent solution, eliminating the environmental concerns of the current method.
This paper describes the Rubicon(tm) actuator, discusses its test data and derives from the data the actuator's accuracy function based upon the observed accuracy of long and short stroke motion commands. The accu...
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ISBN:
(纸本)0819437387
This paper describes the Rubicon(tm) actuator, discusses its test data and derives from the data the actuator's accuracy function based upon the observed accuracy of long and short stroke motion commands. The accuracy is described in terms of the rms positioning error (in nanometers) for moves of a given size, regardless of position in the stroke.
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