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Please select from
the list below or the links on the right.
Lenses
BASIC LENS SET
Set of 6 lenses with outer
diameter of 38mm and focal length of 50cm.
Includes one of each:
- Double Convex
- Plano Convex
- Plano Concave
- Convex Concave
- Meniscus*
- Double Concave
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* Meniscus lenses have one face curved inwards
and the other curved outwards.
For showing the most important types of lenses.
Optically true with ground glass edges. Recommended for demonstration and
science experiments.
Part#LENS38X6
LENSES SPHERICAL, UNMOUNTED,
BI-CONVEX
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prices
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Made of polished
glass with ground edges.
Bi-convex lens: Magnifying or condensing lenses, with two outward
curving symmetrical faces.
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Diameter
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Focal Length(+)
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Cat. No.
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38mm
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50mm
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3305-01
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100mm
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3305-02
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150mm
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3305-04
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200mm
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3305-05
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300mm
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3305-07
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500mm
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3305-08
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1000mm
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3305-09
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50mm
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50mm
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3305-21
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100mm
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3305-22
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150mm
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3305-24
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200mm
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3305-25
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300mm
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3305-27
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500mm
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3305-28
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1000mm
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3305-29
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75mm
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150mm
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3305-41
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200mm
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3305-45
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LENSES SPHERICAL,
UNMOUNTED, BI-CONCAVE
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prices
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Made of polished
glass with ground edges.
Bi-concave lens: Used for reducing the size or spreading out light,
with two inward curving symmetrical faces.
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Diameter
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Focal Length(+)
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Cat. No.
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38mm
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50mm
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3309-01
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100mm
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3309-02
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150mm
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3309-04
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200mm
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3309-05
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300mm
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3309-07
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500mm
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3309-08
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1000mm
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3309-09
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50mm
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50mm
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3309-21
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100mm
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3309-22
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150mm
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3309-24
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200mm
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3309-25
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300mm
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3309-27
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500mm
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3309-28
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1000mm
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3309-29
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75mm
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2000mm
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3309-45
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LENS, DEMONSTRATION
SET, GLASS
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For showing the most
important types of lenses.
Optically true with ground glass edges. Includes one each of double
convex, plano-convex, double concave, plano-concave, concavo-convex
and convexo-concave lenses. The 50-mm lenses usually come in a plastic
or wooden boxes lined with foam or velvet for protection.
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prices
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Diameter
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Cat. No.
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50mm
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3313-02
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NEUTRALIZING LENS
SET, GLASS
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Comprised of one
each of biconcave and biconvex lens, 38mm in dia. and 15.5cm focal
length, which when used together neutralise each other, the
resulting effect being that of a plane glass.
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prices
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CYLINDRICAL LENSES, GLASS
To
focus light along a straight line. 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.
Made of optically true glass with polished faces and ground edges.
Surfaces follow the sides of cylinder(s). Beveled edges.
Dimensions: (h x w), 50mm x 45mm
Power 7D (focal length ~143mm)
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prices
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Type
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Cat. No.
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Bi-convex
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3318-01
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Bi-concave
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3318-02
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Piano-convex
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3318-03
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Piano-concave
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3318-04
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Power 14D (focal
length ~72mm)
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Type
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Cat. No.
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Bi-convex
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3318-11
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Bi-concave
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3318-12
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Piano-convex
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3318-13
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Piano-concave
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3318-14
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Dimensions: (h x
w), 50mm x 50mm
Power 10D (focal length 100mm)
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Type
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Cat. No.
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Piano-convex
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3318-21
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Power 17D (focal
length ~59mm)
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Type
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Cat. No.
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Piano-convex
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3318-31
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Piano-concave
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3318-32
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BLOCK, RECTANGULAR,
ACRYLIC
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prices
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Dimensions are:
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l x w x h
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Type
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Cat. No.
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100 x 75 x 20mm
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Polished on all sides.
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3349-02
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79 x 27 x 13mm.
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One face frosted.
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3349-04
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70 x 70 x 9mm.
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Opposite edges frosted and
the other two polished.
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3349-06
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BLOCK, SEMICIRCULAR
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View prices |
Diameter 75mm and
thickness 12mm
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Type
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Cat. No.
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Glass
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3353-01
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Acrylic
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3353-02
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Diameter 60mm and
thickness 15mm
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Type
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Cat. No.
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Acrylic
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3318-11
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LENSES, ACRYLIC
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Dimensions: 90mm long
and 15mm thick plate.
Bottom surface is frosted.
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Type
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Center width
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Cat. No.
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Bi-convex
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25mm
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3352-01
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Bi-concave
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18mm
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3352-02
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Dimensions : 60mm
long and 12mm thick.
Bottom surface and both edges are frosted.
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Type
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Center width
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Cat. No.
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Double convex
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14mm
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3352-03
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Double concave
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5mm
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3352-04
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Piano-convex
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11mm
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3352-05
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Piano-concave
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5mm
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3352-06
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View prices
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BLOCK, SEMICIRCULAR
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View prices |
Diameter 75mm and
thickness 12mm
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Type
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Cat. No.
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Glass
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3353-01
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Acrylic
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3353-02
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Diameter 60mm and
thickness 15mm.
Made of Acrylic, with one frosted surface.
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LENS DEMONSTRATION,
SET OF SEVEN, ACRYLIC
For seeing the reflection and bending
of light as it passes through lenses and prisms. Phenomenon of
refraction and internal reflection is also easily visualized. The base
surfaces are painted white for easy visibility of a ray of light.
Thickness of the blocks is 10mm except for the last two items noted
below.
View prices
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Set includes the following:
Bi-convex lens 90mm long
Bi-concave lens 90mm long
Semicircular lens 93mm diameter
Trapezoidal block 85 and 30mm opposite faces
Right angle prism 100mm hypotenuse
Right angle prism 32mm hypotenuse and 50mm long
Equilateral prism 25mm face and 50mm long
Supplied in a velvet lined case.
We can
also supply lenses with one side frosted.
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OPTICAL DISK,
HARTL
View prices |
For demonstrating
important principles of optics such as reflection by various
shapes of mirrors, refraction through several types of lenses,
total internal reflection and dispersion.
The apparatus consists of a satin finished metallic disc about
30cm in diameter, graduated around the circumference in 360ß. A
handle on the back can be used to rotate the disk through 360ß in
a vertical plane about a horizontal axis perpendicular to the
plane and passing through the center of the disk.
The disk is partially shielded by a hood adjustable through 360ß
degrees. On the hood is a circular plate with slits to allow ray
or rays of light to pass and fall on the optical elements. The
hood also has a slot for placing red, green and blue filters. The
disk face is outlined for various optical elements so that light
coming through these slits strikes them at correct angles. The
disk is mounted on a heavy tripod base.
A strong source of light for sending parallel rays through the
slits and on to the shielding screen is required. Optics and
filters are not included.
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ACCESSORIES FOR
OPTICAL DISK, HARTL
View prices |
Includes the
following glass lenses or prisms. Frosted faces. Thickness 10mm.
Packed in a velvet lined case.
Spherical bi-convex lens, length 85mm
Spherical bi-concave lens, length 85mm
Triangular right angle prism (90ß-45ß-45ß), hypotenuse 75mm
Trapezoidal prism, base 85mm
Semicircular lens, diameter 85mm
Circular lens, diameter 85mm
Note: The
optical elements are fixed on the metal disk by means of
clamping screws which are provided with the Hartl Optical Disk.
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Distributors of scientific and educational products
Where to buy?
Most pictures are linked to
the pricing and online store for fast and convenient ordering
Our products are available at the following
online stores. For large orders please call in advance and verify the
availability, wholesale discounts and shipping options. If you cannot find any
product in the online store of your choice, please use the search option of the
store or call (973)777-3113 for further assistance.
All orders will be shipped from our
warehouse in United States (USA). We ship worldwide
to most countries including U.S., Canada, Australia, United Kingdom, New
Zealand, Germany, France, Netherlands, and many other countries.
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