Ophthalmic lens blank in Sundance photochromic glass
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Selection of seven plastic ophthalmic lenses in paper wrappers of different colours
1950-1980
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
White ophthalmic crown glass
1980
Preproduction sample of the first photochromic glass from Chance Pilkington
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Ophthalmic lens blank in crown glass of refractive index 1.523
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in Sundance photochromic glass
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in Reactolite Rapide photochromic glass
1986-1987
Ophthalmic lens blank in crown glass
1986-1987
Crookes - alpha glass tinted with cerium and didymium oxides
1980
Green SGO glass coloured by addition of iron
1980
ophthalmic lens blanks showing the various stages in the manufacture of trifocal lenses
Ophthalmic lens blank in Slimline 730 high-index glass
1986-1987
Ophthalmic lens blank in Slimline Brown 730 high-index glass refractive index 1.8
1986-1987
Ophthalmic lens blank in Slimline 730 high-index glass
1986-1987