During this time, she worked on more than 300 types of optical glasses and 40 patents were registered in her name.
In her early years, she worked on the development of thin films.
Her findings are still being used in the manufacturing of sunglasses, anti-reflective lenses and glass facades.
Faulstich received international recognition for the invention of the lightweight lens "SF 64", for which she was honoured in 1973.
She died in 1998 in Mainz at the age of 82.
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