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