CPC Subgroup
G02B 5/26 Reflecting filters (G02B5/28 takes precedence)
Full Title
Optical elements other than lenses (light guides G02B6/00; optical logic elements G02F3/00) > Filters (polarising elements G02B5/30) > Reflecting filters (G02B5/28 takes precedence)
1 direct subcode
Child Classifications
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