Listing ID #3853124
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Contact SupplierSimple Spherical Double Convex lenses having two out side curved parallel surfaces to each other and used for magnification and converging the light and having a positive focal length. Similarly Spherical Double Concave lenses having a negative focal length and two inwards parallel surfaces and diverging the light. Manufactured the lenses from tint plate glass, are highly polished and well edged.
Diameter | Focal Length | |
( a ) | 38 mm | 5 cm |
38 mm | 10 cm | |
( b ) | 50 mm | 5 cm |
50 mm | 10 cm | |
50 mm | 15 & 20 cm | |
50 mm | 30 , 50 & 100 cm | |
( c ) | 60 mm | 15 cm |
60 mm | 20 cm | |
( d ) | 75 mm | 15 cm |
75 mm | 20 cm | |
( e ) | 100 mm | 20 cm |