Six all-dielectric dichroic interference colour filters, each comprising two peices of glass with colour filter 'sandwiched' between, unsigned, Europe, 1920-1990
Details
- Category:
- Optics
- Object Number:
- 1953-335
- Materials:
- glass
- Measurements:
-
overall: .238kg
each: 6 mm x 51 mm x 35 mm,
- type:
- colour filter
- credit:
- Pilkington P.E. Limited; Barr and Stroud Limited