Abstract

Transparent coatings of a number of luminescent materials have been deposited on glass surfaces by chemical reaction of the components in the vapor state. The best of these so far obtained is zinc sulfide. Arsenic, copper, manganese, phosphorus, or zinc have been successfully introduced as activators. Under cathode ray excitation, some of these have given brightness as high as 40 foot-lamberts at 20 kv and 1 microampere per sq cm. The uv response of these films is low, but varies with the conditions of preparation. The properties of these nonscattering phosphor screens are described and their advantages over powder phosphors considered.

© 1955 Optical Society of America

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References

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  1. J. H. de Boer, U. S. Patent No. 1,954,691 (April10, 1934).
  2. F. E. Williams, J. Opt. Soc. Am. 37, 302 (1947).
    [Crossref]
  3. Studer, Cusano, and Young, J. Opt. Soc. Am. 41, 559 (1951).
    [Crossref]
  4. D. A. Cusano and F. J. Studer, J. Opt. Soc. Am. 42, 878 (1952).

1952 (1)

D. A. Cusano and F. J. Studer, J. Opt. Soc. Am. 42, 878 (1952).

1951 (1)

1947 (1)

Cusano,

Cusano, D. A.

D. A. Cusano and F. J. Studer, J. Opt. Soc. Am. 42, 878 (1952).

de Boer, J. H.

J. H. de Boer, U. S. Patent No. 1,954,691 (April10, 1934).

Studer,

Studer, F. J.

D. A. Cusano and F. J. Studer, J. Opt. Soc. Am. 42, 878 (1952).

Williams, F. E.

Young,

J. Opt. Soc. Am. (3)

Other (1)

J. H. de Boer, U. S. Patent No. 1,954,691 (April10, 1934).

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Figures (9)

Fig. 1
Fig. 1

Scattered light pattern for focused electron beam on phosphor screens.

Fig. 2
Fig. 2

Photographs of cathode ray spot on different phosphor screens.

Fig. 3
Fig. 3

Spectral distribution of vapor-deposited coatings self-activated and with copper and manganese as activators.

Fig. 4
Fig. 4

Spectral emission curve for vapor-deposited screen of ZnS:P.

Fig. 5
Fig. 5

Spectral emission curves of ZnS:As for different conditions of preparation.

Fig. 6
Fig. 6

Arrangement for vapor deposition of phosphor on glass plate.

Fig. 7
Fig. 7

Voltage-brightness curve of typical white-emitting transparent screen.

Fig. 8
Fig. 8

Arrangement for determination of luminescence trapped in transparent screen.

Fig. 9
Fig. 9

Comparison of sphere brightness for sample with edges clear and blackened.

Tables (1)

Tables Icon

Table I Typical vapor-deposited phosphors.