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Incident
Light
%
Reflected
%
Transmitted
45° AOI
Substrate: Float Glass
Length and Width Tolerance (mm): ±0.38
Surface Flatness: 4 - 6l/inch
Surface Quality: 80-50
Coatings (45° both sides)
Beamsplitter Coating: R/T (as specified) ±5% @ 550nm
AR Coating: (only as noted) l/4 MgF2 @ 550nm
30R / 70T Beamsplitter (45)
Transmission
Reflection
100
50
Elliptical Plate Beamsplitters
50R / 50T Beamsplitter (45°)
Transmission
Reflection
100
70
30
70R / 30T Beamsplitter (45°)
Transmission
Reflection
Visit our website for detailed coating specifications
Shop www.edmundoptics.co.uk – latest pricing – availability – new products – over 34,000 items 191
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70
30
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400 450 500 550 600 650 700 750 800
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400 450 500 550 600 650 700 750 800
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400 450 500 550 600 650 700 750 800
• Low Cost Design
• Multiple Sizes Available
• Many Beamsplitting Ratios Available
Our Plate Beamsplitters are available in a variety of
configurations to meet a variety of application needs.
Many are available with an anti-reflection (AR) coated
second surface to enhance each beamsplitter’s overall
efficiency and to prevent unwanted ghost reflections.
Plate Beamsplitters
Plate Beamsplitters *Call for Availability and Pricing
Size
Thickness
Reflection % / Transmission % Price
(mm)
(mm) Comments
25/75 30/70 40/60 50/50 70/30 75/25 1-9 10-24 25+
12.5 Dia. 1.0 AR CTD #46-664 #45-312 #46-665 #45-313 #45-314 #46-666 £33.15 £24.22 Call For OEM Quantity Pricing
12.5 x 17.5 1.0 AR CTD #46-604 #45-315 #46-605 #45-316 #45-317 #46-606 £33.15 £24.22
18 x 30 2.0 – #46-687 #46-688 #46-689 #31-414 #46-690 #46-691 £33.15 £24.22
20 x 27 1.0 – #46-692 #46-693 #46-694 #32-269 #46-695 #46-696 £34.85 £25.93
20 x 37 1.0 – #46-697 #46-698 #46-699 #31-413 #46-700 #46-701 £34.85 £25.93
25.0 Dia. 1.0 – #43-817 #43-734 #43-735 #43-736 #46-607 #46-608 £38.25 £27.63
25 x 38 3.0 – #31-437 #46-667 #46-668 #31-436 #46-669 #31-435 £39.10 £29.32
25 x 38 1.5 – #46-702 #46-703 #46-704 #32-363 #46-705 #46-706 £39.95 £29.32
25 x 76 2.0 – #46-670 #46-671 #46-672 #31-411 #46-673 #46-674 £42.50 £31.02
35 x 35 1.0 AR CTD #46-609 #45-324 #46-610 #45-325 #45-326 #46-611 £44.20 £31.02
50 x 50 1.0 – #43-818 #43-360 #43-358 #43-359 #46-612 #46-613 £49.30 £34.85
51 x 76 3.0 – #31-434 #46-675 #46-676 #31-433 #46-677 #31-432 £59.50 £41.65
60 x 85 1.0 AR CTD * #64-407 * #64-408 #64-409 * £68.00 £48.45
75 x 75 1.0 AR CTD #46-639 #46-640 #46-641 #46-642 #46-643 #46-644 £86.70 £62.05
127 x 178 3.0 AR CTD * #43-362 #61-260 #46-583 * * £188.70 £133.88
254 x 356 3.0 AR CTD * #43-363 #72-502 #46-584 * #68-268 £442.00 £324.27
Substrate: N-BK7
Minor Axis Tolerance (mm): +0.0/-0.10
Major Axis Tolerance (mm): +0.0/-0.40 (17.68mm)
+0.0/-0.70 (35.36 & 70.71mm)
Thickness (mm): 1.0 ±0.1
Surface Quality: 60-40
Clear Aperture (%): 80
50mm Dia.: 85
Parallelism (arcmin): <1
Coatings: 50%R/50%T
• Circular Profile at 45°
• Visible and NIR Coating Options Offered
• Ideal for Diffuse Axial and In-line Illumination
TECHSPEC® Elliptical Plate Beamsplitters maximize
beamsplitting efficiency while minimizing required
mounting space. When oriented at 45°, the
beamsplitters create a circular aperture equal to the
diameter of the minor axis. TECHSPEC® Elliptical
Plate Beamsplitters are available with either a visible
or NIR 50% reflection/50% transmission beamsplitter
coating, and feature a high efficiency multi-layer antireflection
(AR) coating to reduce back reflections.
TECHSPEC® Elliptical Plate Beamsplitters
Minor Axis
Major Axis
Thickness
(mm)
(mm)
(mm)
Surface
Flatness
Stock No.
VIS 400 - 700nm
Stock No.
NIR 700 - 1100nm
1-5 6-25 26+ 1-5 6-25 26+
12.5 17.68 1.0 1l #48-913 £108.80 £76.50
Call
#48-914 £113.90 £76.50
Call
25.0 35.36 1.0 1l #48-915 £136.00 £95.63 #48-916 £141.10 £95.63
50.0 70.71 1.0 1l #48-917 £209.10 £146.63 #48-918 £214.20 £146.63
/www.edmundoptics.co.uk
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