Beam Samplers0 pages

OPTICAL COMPONENTS

Beam Samplers

Spherical Lenses
Cylindrical Lenses

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Lens Kits

Provides a 5% reflected sample of the entire beam
Highly efficient Anti-Reflection coating on the second tt
surface to eliminate ghosts
Available in four standard diameters
Wedged second surface also
available for highly demanding
applications
Surfaces finished to
λ/10 flatness
Standard diameters ttt
from 25.4 to 50.8mm

Achromatic Doublets
Multi-Element
Micro Optics
Mirrors
Prisms
Substrates & Windows
Beamsplitters
Polarizers
Filter & Apertures

About 5% of a beam incident at 45 degrees is reflected from one surface of these BK7
beam samplers. The faces are parallel to within 5arcsec with a highly effective
Anti-Reflection coating on the second surface. This coating eliminates virtually all ghost
image problems. The 5% reflected beam is useful for diagnostic sampling or monitoring
of the optical beam.

Sampling a beam
is an effective way
of providing feedback
information for
stabilization or
calibration. Often
one is tempted to insert

Specifications & Tolerances

a small plane mirror
in an unused or

Surface flatness: λ/10t
Diameter: +0, -0.2mm
Surface quality: 20-10t
Parallelism: ≤5arcsec or 1° wedget
Thickness: ±0.2mmt
Clear aperture: >90% diametert
Bevel: 0.2mm x 45° typicalt
Material: BK7, grade A
Reflectance: Rav =5% at 45°t
Wedge (optional): 1°

vignetted portion of
the beam to
provide the sample.
The danger, of course,
is that the chosen
region may not be
typical of the entire
beam.

Beam Samplers
Diameter, D
(Inches)
(mm)

1.00
1.18
1.97
2.00

25.4
30.0
50.0
50.8

Thickness, t
(mm)

3.0
3.0
5.0
5.0

Price

$ 89.00
$ 95.00
$ 168.00
$ 179.00

PART
NUMBER

038-2450
038-2460
038-2470
038-2480

ORDERING
&
TECHNICAL SUPPORT

(949) 851-5881
FAX (949) 851-5058
E-MAIL

sales@optosigma.com
WEB

www.optosigma.com

For a 1° wedged substrate append -W to part number and add $25 to the price.
Note: Wedged substrates are several mm thicker.
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