Preproduction sample of the first photochromic glass from Chance Pilkington

Made:
1986-1987 in St Asaph
maker:
Chance-Pilkington
Preproduction sample of the first photochromic glass from

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Preproduction sample of the first photochromic glass from
Science Museum Group
© The Board of Trustees of the Science Museum

Preproduction sample of the first photochromic glass from Chance Pilkington, type FPX2, made in 1972, 90% to 20% transmittance for 2mm thick sample

Details

Category:
Optics
Object Number:
1987-13
Materials:
glass
Measurements:
overall: x x 10 mm, 65 mm, .025kg
type:
ophthalmic lens blank
credit:
Chance-Pilkington