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Precision
Optics
Introduce
Windows
Lenses
Prisms
Waveplates
Beamsplitters
Filters
Laser
Optics
Beam Expander
Ball
Lenses
Half-Ball
Lenses
Rod
Lenses
Laser
Line Generator Lenses
Coloured
Optical Glass
IR
Materials
Coating
Custom
Optics
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In
its broadest sense, a beam expander is any optical system
designed to increase the diameter of a laser beam. In
most cases, the term is taken to mean a telescope designed
to take a small-diameter collimated beam input beam
and produce a larger diameter collimated output beam,
thus reducing the divergence of the beam. The beam expander
consists of a negative input lens and a positive objective.
The expansion factor is the ratio of the focal length
of the two lenses.
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Wavelength
Range:
532nm, 632.8nm
Recommended Beam Diameter: <0.14mm
Dimension Tolerance: ¡À0.2mm
Surface Quality: 60/40 scratch and dig
Coatings: AR-Coatings @ 532nm
Wavefront Distortion: l/2
(p-p, over clear aperture, @ 632.8 nm)
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Part
No.
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Expansion
ratio
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Concave
Lens ¦µ (mm)
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Convex
Lens ¦µ (mm)
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Distance
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BE0005
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5X
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6
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6
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20mm
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BE0007
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7.5X
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6
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6
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16mm
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BE0010
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10X
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8
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8
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30mm
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BE0015
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15X
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8
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8
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45mm
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BE0030
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30X
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6
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8
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50mm
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BE0100
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100X
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8
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20
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165mm
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Other
expansion ratio and wavelength are available upon
request. |
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The
BE0030 consists of a concave lens and two convex
lens. |
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The
BE0100 consists of a achromatic lens and a convex
lens. |
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