90.20 Standard under periodical review Jul 15, 2026
ISO
ISO/TC 172/SC 3 Optical materials and components
International Standard
81.040.10 Raw materials and raw glass
Published
This International Standard describes the stress optical method for determining the birefringence in glass, especially in raw optical glass in bulk and preshaped forms. This method is also used in photo-elasticity.
PUBLISHED
ISO 11455:1995
90.20
Standard under periodical review
Jul 15, 2026