Describes a method using the optical Fourier transform to test cathodo- and photoluminescent screens. The transmittance spectrum is obtained and studied. Screen texture can be either uniform or clustered. From results on cathodoluminescent electrophoretic screens good performance of uniformly textured screens is related to a monotonically decreasing spectrum in the spatial frequency domain. Screens showing grain clusters can be easily identified during manufacture by their Fourier spectrum instead of by microscope observation. The consequences of a clustered structure in screens operating either by electron or X-ray excitation are briefly discussed. When the average cluster dimension must belong to a determined range the optical Fourier transform enables an automatic sorting system to be implemented.

Crosta, G.F. (1977). Texture analysis of phosphor screens. JOURNAL OF PHYSICS. E, SCIENTIFIC INSTRUMENTS, 10(2), 187-190 [10.1088/0022-3735/10/2/021].

Texture analysis of phosphor screens

CROSTA, GIOVANNI FRANCO FILIPPO
1977

Abstract

Describes a method using the optical Fourier transform to test cathodo- and photoluminescent screens. The transmittance spectrum is obtained and studied. Screen texture can be either uniform or clustered. From results on cathodoluminescent electrophoretic screens good performance of uniformly textured screens is related to a monotonically decreasing spectrum in the spatial frequency domain. Screens showing grain clusters can be easily identified during manufacture by their Fourier spectrum instead of by microscope observation. The consequences of a clustered structure in screens operating either by electron or X-ray excitation are briefly discussed. When the average cluster dimension must belong to a determined range the optical Fourier transform enables an automatic sorting system to be implemented.
No
Articolo in rivista - Articolo scientifico
Scientifica
image intensifier tubes; electrophoretic deposition; phosphor powder; grain clusters; quality control; Fourier optics; spatial frequency domain
English
Physics Abstracts 42.80 (7-23751); article derived from the author's Master thesis in Electronics Engineering at Gruppo Tecnologie of Consiglio Nazionale per l'Energia Nucleare (CNEN) Laboratories, Frascati, Italy in 1972 - 1973.
Crosta, G.F. (1977). Texture analysis of phosphor screens. JOURNAL OF PHYSICS. E, SCIENTIFIC INSTRUMENTS, 10(2), 187-190 [10.1088/0022-3735/10/2/021].
Crosta, G
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/93657
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