Demainbray's convex lens
1750
Achromatic doublet lens with a focal length of 52 inches
1780
Watson close-up lens
Two green lenses set in a wooden holder
Two biconvex lenses
"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
Burning-lens, mounted at end of a cylindrical box (length 2 ins) of brass silvered
Photo lens Ross patent airo
Photo lens
Photo lens
Photo lens
Photo lens
Photo lens
Photo lens
"Monarch" stand magnifier with 153x104mm (aspheric) acrylic lens and ivory-coloured supports
1950-1959
Selenium glass signal lens
2a. Patent portrait lens front crown
Cylindrical concave lens, focal length about 75mm
1900-1980
Cylindrical bi-concave lens
1900-1983
Cylindrical plano-convex lens
1900-1983
Lenses illustrating manufacture of Dallmeyer Stigmatic F/6 lens
Lenses illustrating manufacture of Dallmeyer Stigmatic F/6 lens
Horn framed reading lens with trefoiled handle
1680-1700
Optician's trial set of lenses
Reading lens in wooden frame and handle
1650
Lens type PS 0120001 polished and anti-reflection coated by Barr and Stroud Ltd.
1986
Plastic plano-concave lens for a head-up display
1983
Reading lens in leather mount, 1701-1730
1701-1720
Stanhope lens
1829-1845
Stanhope lens of greenish glass
Plastic aspheric lens for the BEA guide weapon camera system
1982
Pair of safety goggle lenses, with case
Set of opticians trial lenses in wooden box
Germanium lens
1980-1986
Two "Franklin Split Bifocal" lenses: (1) Oval
Four lenses
1880-1950
Lens, finger tip shape incomplete
1880-1950
Lens, glass, finger tip shaped
1880-1950
Lens, glass, thumb tip shaped
1880-1950
Pair of lenses
1880-1950
Lens, glass, roughly oval
1880-1950
Lens, roughly circular
1880-1950
Aspheric lens used for slide projectors
1980
Eight clear glass lenses
1880-1950
Pair of glass lenses
1910-1950
Thallium bromo-iodide lens, one of ten, c. 1960
1955-1965
Thallium bromo-iodide lens, one of ten, c. 1960
1955-1965
Thallium bromo-iodide lens, one of ten, c. 1960
1955-1965
Block of lenses (7) ground with fine emery by J.H. Dallmayer Ltd.
1909