Resumen
The method is based on light coming through a first slit (light source), being converted to parallel light through a first lens (collimator), reflected at the surface of the test piece, focussed at a combed sliding shutter through a second lens (condensing lens). The signal measured by a photo-receiver behind the shutter is a measure of image clarity. Optical evenness of the test piece is shown by the ratio of the longitudinal and transverse values when the shutter is appropriately slid.
Informaciones generales
-
Estado: RetiradaFecha de publicación: 1992-10Etapa: Retirada de la Norma Internacional [95.99]
-
Edición: 1Número de páginas: 5
-
Comité Técnico :ISO/TC 79/SC 2ICS :25.220.20
- RSS actualizaciones
Ciclo de vida
-
Anteriormente
RetiradaISO 2767:1973
-
Ahora
-
Revisada por
RetiradaISO 10216:2010