Item: achromatic lenses
Material: H-BaF8/H-K9
Size: Dia19*5.5(1.5+4)mm
Focal length: Fd=236.67mm
Radius: 172.19/21.88/-92.90mm
Surface quality: 60-40
Flatness: 2 lambda
Coating: BBAR@590+/-50nm
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Supplier: Optical lenses