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Double Convex Lenses, Spherical (LT-2001)
Made from optically worked glass, highly polished
Focal Length (cm)
Dia mm
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
A
38
5
10
15
20
25
30
50
100
B
C
75
D
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Double Concave Lenses, Spherical (LT-2002)
Made from optically worked glass, ground edges.
Piano-Convex Lenses (LT-2003)
Optically worked faces, ground edges, made from glass
Dia (mm)
Focal length (mm)
Power (D)
70
+14
+20
32
1000
+1.0
140
+7.0
E
400
+2.5
Piano-Concave Lenses (LT-2004)
Optically worked faces, ground edges, made from glass.
-10
200
-5
Set of Six Lenses (LT-2005)
Made from optically, worked glass, round edges and polished faces, dia 50 mm. one each double convex, planoconvex, concave-convex, convexo-concave, double concave, plano-concave, in wooden case.
Meniscus Lenses (LT-2006)
Dia. 50 mm, meniscus lenses, suitable to be used with model eye kit for correction of eyesight defects. Power Diopters (a) +11 (b) +8 (c) +5.5 (d) +2.5 (e) -3
Cylindrical Lenses (LT-2007)
Clear glass, with ground ends and optically worked faces. (a) Bi Convex, 45x50mm, F.L. 75mm (+13.3D) (Approx.) (b) Bi Convex, 50x50mm, F.L 75mm (+13.3D) (Approx.) (c) Bi Convex, 40x45mm, F.L. 150mm (-6.7D) (Approx.) (d) Piano-Convex,45x50mm, F.L 150mm (-6.7D) (Approx.)
Lens Holder Wooden (LT-2008)
Wooden, for lenses or mirrors upto 75 mm dia, 100 mm high upright with V-slot mounted on base. An index mark is engraved at each end of the base.
Lens Holder, Metal (LT-2009)
With sides grooved to take lenses or mirror, black painted (a) For 38 mm dia (b) For 50 mm dia
Lens Holder, Plastic (LT-2009/1)
Same as above for 50mm dia
Lens Holder (LT-2010)
To hold lenses or mirrors of 50 mm dia, Comprises a strip metal spring clip with a locating V in either side arm, mounted on a stand with groove across the base to accommodate a meter rule.
Lens Holder (LT-2011)
Spring locating, strips hold the lens firmly in place. Holder may be used in the inverted position mounted on a metal rod of 6 mm dia to fit into standard optical bench mounts and stands. Supplied with bakelite base. (LT-2011/1) Same as above, but without base
Lens Holder (LT-2012)
Casted light metal, to hold lenses upto 63mm dia, with V, mounted on stem 9.0mm dia.
Mirrors Plane (LT-2013)
Glass, unmounted, back silvered with protective coating (a) 50 x 50 mm (b) 75 x 25 mm (c) 75 x 75 mm (d) 100 x 75 mm (e) 150x25 mm (f) 150 x 50 mm (g) 150 x 100 mm
Mirror Support Block (LT-2014)
Wooden with slot on one side to take mirrors. (a) 50 x 50 x 50mm (b) 75 x 50 x 50mm (c) 100 x 50 x 50mm
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