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| A lens is a
circular prism. "Convex" lens are thicker in the center than at the
edges. "Concave" lens are thinner in the center than at the edges and
"Plano" means flat. Simple lens are the same on both sides.
Complex lens have one configuration on one side and another configuration
on the other. |
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Individual Lenses
All lenses are unmounted. All are made of
highest quality optical glass
Size = Diameter x Focal Length
Diameter is the distance across the lens
Focal Length is the distance from the optical center of the lens to the
point where an image is in focus |
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Bi-Convex Lenses |
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The center of the lens
is wider than the edges |
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Bi-Concave Lenses |
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The center of the lens
is thinner than the edges |
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38mm Lenses
Great for use with our Optical Bench |
| Size |
|
Number |
Price |
|
Size |
|
Number |
Price |
| 38mm x 50mm |
|
SL230-AA |
2.95 |
|
38mm x 50mm |
|
SL230-BA |
3.95 |
| 38mm x 100mm |
|
SL230-AB |
1.75 |
|
38mm x 100mm |
|
SL230-BB |
2.75 |
| 38mm x 150mm |
|
SL230-AC |
1.50 |
|
38mm x 150mm |
|
SL230-BC |
2.25 |
| 38mm x 200mm |
|
SL230-AD |
1.50 |
|
38mm x 200mm |
|
SL230-BD |
2.25 |
| 38mm x 300mm |
|
SL230-AF |
1.50 |
|
38mm x 300mm |
|
SL230-BF |
2.25 |
| 38mm x 500mm |
|
SL230-AG |
1.50 |
|
38mm x 500mm |
|
SL230-BG |
2.25 |
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Larger Lenses
Use for optical experiments, making telescopes, magnifiers, etc. |
| Size |
|
Number |
Price |
|
Size |
|
Number |
Price |
| 50mm x 50mm |
|
SL230-DA |
4.25 |
|
50mm x 50mm |
|
SL230-EA |
4.25 |
| 50mm x 100mm |
|
SL230-DB |
3.25 |
|
50mm x 100mm |
|
SL230-EB |
3.50 |
| 50mm x 300mm |
|
SL230-DE |
2.25 |
|
50mm x 300mm |
|
SL230-EE |
2.50 |
| 50mm x 500mm |
|
SL230-DG |
2.25 |
|
50mm x 500mm |
|
SL230-EG |
2.50 |
| 75mm x 100mm |
|
SL230-GB |
7.85 |
|
75mm x 100mm |
|
SL230-HB |
6.50 |
| 75mm x 200mm |
|
SL230-GD |
6.50 |
|
75mm x 200mm |
|
SL230-HD |
7.50 |
| 75mm x 300mm |
|
SL230-GF |
6.50 |
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Neutralizing Lens Set
Consists of a biconcave and biconvex lens. When used together, they
neutralizes each other, the resulting effect being that of a plane glass.
Both lenses are 38mm in diameter and have a focal length of 150mm
No. SL230-SA. Only $6.25 |
 |
Spherometer
Not sure of how much curvature is your lens or mirror? Use this
precision instrument to determine the radius of curvature of spherical
surfaces, such as mirrors and lenses. The micrometer screw is
graduated to measure displacement as small as 0.01mm. The instrument has
two brass plates and three steel legs. A flat glass plate is
provided for support while taking precision readings.
No. SL230-MA. Only $12.95 |
| The name comes from the fact that
the sides are shaped like segments of a cylinder. These
special lens are used to focus light along a straight line.
Rather than direct light through the wide side, it is directed from
the edge. Useful for looking at full paths of "rays" on paper,
such as pencils of light emerging from the slits of a comb
illuminated by a small lamp. Great experiments result from
using with one of our laser lights. All are made of optical
glass and highly polished. They are 50mm x 45mm in size
and have a 143mm focal length - 7 power. |
| Bi-Convex Cylindrical Lens |
|
SL230-C1 |
$5.95 |
| Bi-Concave Cylindrical Lens |
|
SL230-C2 |
$5.95 |
| Plano-Convex Cylindrical Lens |
|
SL230-C3 |
$5.95 |
| Plano-Concave Cylindrical Lens |
|
SL230-C4 |
$5.95 |
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