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Title | Maker | Date Made | |
'Aphax' bifocal lens | Essilor | 20th c. | View |
'Atoz' prism-controlled solid bifocal lens | Stigmat Ltd | 1950s? | View |
'Atoz' prism-controlled solid bifocal lens | Stigmat Ltd | 1950s? | View |
'Bi-Liptic' solid bifocal lens | View | ||
'Bi-Liptic' solid bifocal lens | View | ||
'Clarlet' bifocal lens | Zeiss | 20th c. | View |
'Duopal' C25 fused bifocal lens | Zeiss | View | |
'Duopal' SL C25 Mid-Index fused bifocal lens | Zeiss | Mid-late 20th c. | View |
'Executive' (E-type) solid bifocal lens | 20th c. | View | |
'Executive' (E-type) solid double bifocal lens | 20th c. | View | |
'Franklin-type' Split Bifocal lens | View | ||
'Ful-Vue' fused bifocal lens | American Optical Co | View | |
'Glaukar' C40 fused bifocal lens | Zeiss | 20th c. | View |
'Hi Drop' bifocal lens | Sola Optical Co | View | |
'Hi-Drop' bifocal lens | Sola Optical Co | View | |
'Highlite' solid bifocal lens | c.1970s | View | |
'Igard' solid bifocal lens | Combined Optical Industries Ltd | 1947 | View |
'Invisible' upcurve solid bifocal lens | View | ||
'Luxe' invisible solid downcurve bifocal lens | View | ||
'Luxe' invisible solid downcurve bifocal lens | View | ||
'Luxe' invisible solid downcurve bifocal lens | View | ||
'Multifield' lenticular bifocal lens | 20th c. | View | |
'Myoplet' lenticular bifocal lens | 20th c. | View | |
'Norbond' cemented bifocal lens: round segment | 20th c. | View | |
'Omega' bifocal lens | Essilor | 20th c. | View |
'Orma Télégic' bifocal lens | Essilor | 1961 | View |
'Orma Télémilaric' bifocal lens | Essilor | 20th c. | View |
'Orma Telex' bifocal lens | Essilor | 1958 | View |
'Orma' bifocal lens | Essilor | 20th c. | View |
'Panoptik' fused bifocal lens | View | ||
'Perfection' Split Bifocal lens | View | ||
'Solette' monaxial solid bifocal lens | View | ||
'Stigmalentic' lenticular bifocal lens | 20th c. | View | |
'Tangal' no-jump solid downcurve bifocal lens | Carl Zeiss (Jena) | 20th c. | View |
'Tru-tilt' bi-planar solid bifocal lens | Courmettes, H. | 20th c. | View |
'Ultex' invisible solid downcurve bifocal lens (replica) | c.1990 | View | |
Adite Lenticular Aspheric bifocal lens | 20th c. | View | |
Aspheric Lenticular bifocal lens | 20th c. | View | |
Bi-Liptic Bi-Focal Lenses | Early 20th c. | View | |
bifocal lens | Armorlite | View | |
bifocal lens | Sola Optical Co | 20th c. | View |
Bifocal lens | 20th c. | View | |
Bifocal lens | 20th c. | View | |
bifocal lens | Mid-Late 20th c. | View | |
Bivue fused bifocal lens | M. Wiseman & Company Ltd | 1950s | View |
Bivue fused bifocal lens | M. Wiseman & Company Ltd | Mid 20th c. | View |
Bivue fused bifocal lens | M. Wiseman & Company Ltd | c.1954-1955 | View |
Cemented bifocal lens: 'Jump-Free' crescent segment | View | ||
Cemented bifocal lens: 'Wafer' segment | View | ||
Cemented bifocal lens: Crescent segment | View | ||
Cemented bifocal lens: Prismatic segment | View | ||
Cemented bifocal lens: Straight-top segment | View | ||
Charles Hymans' upcurve solid bifocal lenses | View | ||
Early 'Kryptok' fused bifocal lens | Kryptok Ltd | View | |
Early 'Kryptok' fused bifocal lens | Kryptok Ltd; C. W. Dixey & Son Ltd | View | |
Early fused bifocal lens | Zeiss | View | |
fused bifocal lens | 1950s? | View | |
Fused bifocal lens | View | ||
Hoya 'Alpha' D28 bifocal lens | 20th c. | View | |
Hoya Super-CT28 fused bifocal lens | 20th c. | View | |
Hyperaspheric bifocal lens | Late 1970s/early 1980s | View | |
Invisible solid concentric double bifocal lens | View | ||
Invisible solid concentric step down bifocal lens | View | ||
Invisible solid downcurve bifocal lens | View | ||
Invisible-segment fused bifocal lens | View | ||
Kryptok Patent Bifocal | Early-mid 20th c. | View | |
L.V.A. bifocal lens | Sola Pilkington | c.1979-1993 | View |
L.V.A. bifocal lens | View | ||
L2CT28 fused bifocal lens | Hoya Lens UK Ltd | 20th c. | View |
Lenticular bifocal lens | 20th c. | View | |
Multifield bifocal lens | 20th c. | View | |
Nikon-Stigmat ER solid bifocal lens | Nikon | View | |
Norlite S28 bifocal lens | Norville Optical Company Limited | 20th c. | View |
pair of 'Perfex' fused bifocal lenses | Titmus | 1959 | View |
Part-manufactured fused bifocal lenses | Late 20th c. | View | |
Part-manufactured solid bifocal lenses | Late 20th c. | View | |
Polycarbonate bifocal lens | 20th c. | View | |
Prism-controlled bifocal lens | SB Optical Ltd | 1995 | View |
Prism-controlled fused bifocal lens | View | ||
Prism-controlled fused bifocal lens | View | ||
Progressive Upcurve bifocal lens | Emil Busch AG | 20th c. | View |
R5 and R9 fused bifocal lenses in spectacle frame | View | ||
Ribbon-segment fused bifocal lens | View | ||
Semi-visible solid downcurve bifocal lens | 20th c. | View | |
set of bifocal lenses & case | Link | 20th c. | View |
Set of Sutcliffe cemented bifocal lenses: oval segments | Sutcliffe, Robert | Early 20th c.? | View |
Sutcliffe Visible solid downcurve bifocal lens (prototype) | Sutcliffe, John Hamer | Post 1901 | View |
Sutcliffe Visible solid downcurve bifocal lens (prototypes) | Sutcliffe, J.H. | c.1901 | View |
Two 'invisible' upcurve solid bifocal lenses | Moussier Boulland & Cie | Post 1849 | View |
Univis (type) fused bifocal lens with compensating prism | View |
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