Demainbray's convex lens
1750
Achromatic doublet lens with a focal length of 52 inches
1780
"Fold up" stereoscopic viewer housing a magnifying lens and stereoscopic lenses
1930-1970
An achromatic triplet hand-lens (x10) in swing-out nickel plated mount and leather case
Selenium glass signal lens
Lens, blue tinted, D-shaped, English, 1870-1920
1870-1920
Two green lenses set in a wooden holder
Eight clear glass lenses
1880-1950
14 lenses
1801-1930
3 circular Splintanil lenses
1920-1960
Lens, glass, roughly oval
1880-1950
Four lenses
1880-1950
Lens, roughly circular
1880-1950
Pair of glass lenses
1910-1950
Lens, glass, finger tip shaped
1880-1950
Lens, glass, thumb tip shaped
1880-1950
Pair of lenses
1880-1950
Lens, finger tip shape incomplete
1880-1950
Watson close-up lens
2a. Patent portrait lens front crown
Photo lens
Photo lens
Photo lens
Photo lens
Photo lens
Photo lens Ross patent airo
"Monarch" stand magnifier with 153x104mm (aspheric) acrylic lens and ivory-coloured supports
1950-1959
Two "Franklin Split Bifocal" lenses: (1) Oval
Photo lens
Cylindrical concave lens, focal length about 75mm
1900-1980
Cylindrical bi-concave lens
1900-1983
Cylindrical plano-convex lens
1900-1983
Aspheric lens used for slide projectors
1980
Curved sheet of translucent plastic with rivetted lens
Set of 22 trial lenses in case
1910
Burning-lens, mounted at end of a cylindrical box (length 2 ins) of brass silvered
Lenses illustrating manufacture of Dallmeyer Stigmatic F/6 lens
Lenses illustrating manufacture of Dallmeyer Stigmatic F/6 lens
Pair of safety goggle lenses, with case
Stanhope lens of greenish glass
Thallium bromo-iodide lens, one of ten, c. 1960
1955-1965
Horn framed reading lens with trefoiled handle
1680-1700
Reading lens in wooden frame and handle
1650
Germanium lens
1980-1986
Block of lenses (4) on iron polishing tool
1909
Thallium bromo-iodide lens, one of ten, c. 1960
1955-1965
Lens type PS 0120001 polished and anti-reflection coated by Barr and Stroud Ltd.
1986
Reading lens in leather mount, 1701-1730
1701-1720
Stanhope lens
1829-1845
