Silver-Halide Recording Materials: For Holography and Their by Hans I. Bjelkhagen

By Hans I. Bjelkhagen

Silver-Halide Recording Materials provides a close research of the speculation, the features, the producing, and the processing equipment of silver-halide fabrics used for the recording of holograms. Emphasis is put on the choice of compatible silver-halide fabrics for traditional in addition to designated holographic functions. a close account of present constructing and bleaching tools utilized in the creation of silver-halide holograms is given. the writer additionally provides plenty of recipes for various kinds of processing baths. The textual content is complemented by way of a entire checklist of references so as to facilitate extra research. The monograph may be appropriate for classes in holography, the place the coed possesses a few heritage wisdom in regards to the common holographic approach and the holographic process.

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By Hans I. Bjelkhagen

Silver-Halide Recording Materials provides a close research of the speculation, the features, the producing, and the processing equipment of silver-halide fabrics used for the recording of holograms. Emphasis is put on the choice of compatible silver-halide fabrics for traditional in addition to designated holographic functions. a close account of present constructing and bleaching tools utilized in the creation of silver-halide holograms is given. the writer additionally provides plenty of recipes for various kinds of processing baths. The textual content is complemented by way of a entire checklist of references so as to facilitate extra research. The monograph may be appropriate for classes in holography, the place the coed possesses a few heritage wisdom in regards to the common holographic approach and the holographic process.

Show description

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6. The aberrations caused by the reduced refractive index of the emulsion must be considered, too. Even if the thickness of the emulsion is the same at the reconstruction (unchanged or corrected by post-process swelling) as at the recording, the change of the refractive index from nl to n2 (n2 < nl) will affect the reconstruction angle. j(2n2d), indicates that tP > a (recording angle), when the emulsion thickness is constant. To make tP = a the thickness of the emulsion can be increased by swelling to obtain a fringe spacing of dnl/n2 in a direction perpendicular to the emulsion.

Jaroszewicz found that roughly a triple reduction in the range of emulsion movement can be achieved using the pre-exposure water soaking strain relieve techniques. 6. The aberrations caused by the reduced refractive index of the emulsion must be considered, too. Even if the thickness of the emulsion is the same at the reconstruction (unchanged or corrected by post-process swelling) as at the recording, the change of the refractive index from nl to n2 (n2 < nl) will affect the reconstruction angle.

In both photography and holography the restricted linear part of the characteristic curve is associated with the problems that are apt to appear when recording objects with a large dynamic range. c) Photographic Sensitivity To be able to compare different products and to estimate the required exposures one should properly understand what is meant by photographic sensitivity or the speed of the recording material. When exposure is expressed in radiometric units, the value obtained is called radiometric speed; when it is expressed in photometric units, the value is referred to as photometric speed, which is commonly referred to as photographic sensitivity.

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