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All Products / Optics / Beamsplitters / Cube Beamsplitters / Cube Beamsplitters
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm 70R/30T Cube Beamsplitter

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Stock #68-538 3-5 days
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S$158.78 S$317.55
Qty 1-5
S$158.78 S$317.55
Qty 6+
S$126.88 S$253.75
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Beam Deviation (arcmin):
±3
Bevel:
Protective bevel as needed
Coating:
λ/4 MgF2 @ 550nm on Faces
Multilayer Dielectric on Hypotenuse
Construction:
Cube
Dimensions (mm):
20.0 x 20.0 x 20.0 ±0.10
Reflection/Transmission Ratio (R/T):
70/30
Reflection/Transmission Tolerance (%):
±5
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7
Surface Quality:
60-40
Type:
Standard Beamsplitter
Wavelength Range (nm):
400 - 700
Power (fringes) @ 632.8nm:
1.25
Irregularity (fringes) @ 632.8nm:
0.25

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 223:
Compliant
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Certificate of Conformance:
View
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Product Family Description

  • Multi-Layer Dielectric Coating
  • Available in 30/70, 70/30, or 50/50 Split Ratios
  • Optimal for Applications Insensitive to Polarization

TECHSPEC® Cube Beamsplitters are constructed by cementing two right angle prisms together and are offered in a range of reflection/transmission ratios. Output is partially polarized, making this product suitable for illumination and other applications where polarization is not a concern.  TECHSPEC® Cube Beamsplitters feature an interference coating which is applied to the hypotenuse surface of one of the prisms to provide the designated reflection/transmission ratio with minimal absorption loss. 

Note: If polarization sensitivity is critical to your application, we recommend using TECHSPEC® Polarizing Beamsplitters or TECHSPEC® Non-Polarizing Beamsplitters.