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Journal ArticleDOI

Exploitation of photochromic glass

G.K. Megla
- 01 Apr 1974 - 
- Vol. 6, Iss: 2, pp 61-68
TLDR
In this article, a brief description of the characteristic properties of photochromic glass and some applications which illustrate its potential and its inherent limitations is presented. But the application of the glass is not discussed.
Abstract
Photochromic glass has developed into an optical component which can be used to advantage in optical systems. After a brief description of the characteristic properties of the glass, some applications which illustrate its potential and its inherent limitations is practice are detailed. These include digital storage, use in a cathode ray tube, contrast enhancement, and hologram storage.

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Citations
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Journal ArticleDOI

Darkening mechanisms in silver‐halide photochromic glasses: Flash photolysis and ESR studies

TL;DR: In this paper, the authors investigated the darkening and subsequent fading of silver-halide photochromic glass upon irradiation with a Q-switched laser pulse, and revealed three major components of the photo-chromic darkening at room temperature: prompt (τ <20 nsec) visible absorption due to Cu++ ions in the silver−halide crystallites, slower-rising (τ?7 μsec), and a prompt uv band tail due to ions in matrix glass.
Journal ArticleDOI

Two-state model of light induced activation and thermal bleaching of photochromic glasses: theory and experiments

TL;DR: It is demonstrated that the time behavior in the activation process can be characterized by two relaxation times that depend on the intensity of the activating light, which are lower than the decay times of the pure thermal bleaching process.
Journal ArticleDOI

Photochromic dynamics of ophthalmic lenses

TL;DR: A straightforward test setup for characterizing temporal and spectral dynamics of photochromic spectacle materials and the proposed test device provided accurate results for spectral and temporal dynamics ofphotochromic materials under realistic conditions.
Journal ArticleDOI

Transversal observation of the light-induced color-center concentration in photochromic glasses in stationary state.

TL;DR: The aim of the present work is to study the dependence of the light-induced optical density, i.e., the color-center concentration, as a function of the distance traveled inside a photochromic glass body in stationary state, and proposes an experimental setup that allows the direct observation of that concentration from a transversal view.
References
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Journal ArticleDOI

Thick absorption recording media in holography.

TL;DR: Calculated results showing the relation between measures of response and various hologram recording parameters are presented and experimental results are given which demonstrate the use of thick recording media in holographic data storage and multicolor wavefront reconstruction.
Journal ArticleDOI

Optical properties and applications of photochromic glass.

TL;DR: In this article, the results of an extensive laboratory investigation of their properties were shown that the fatigueless reversibility and the optical characteristics of these glasses hold definite promise for several applications.
Journal ArticleDOI

Kinetics of Bleaching of Photochromic Glass

TL;DR: It is shown that simultaneous optical and thermal bleaching can be separated mathematically and that optical bleaching is a first order process.
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