Circular graded spectrum interference filter (140m

Made:
1970-1973 in Glasgow
manufacturer:
Barr and Stroud Limited

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Circular graded spectrum interference filter (140mm dia), type CGS1 by Barr and Stroud Ltd., Glasgow, Scotland, 1970-1973., sandwiched between two glass discs.

Details

Category:
Optics
Object Number:
1973-194
Materials:
glass and metal
credit:
Thales UK Ltd