Non-Polarizing Cube Beamsplitters(NPBS)

Material: BK7 or other optical glass

Surface quality:60/40(Standard), 10/5(High Precision)

Flatness:λ per 25mm

Bevel:<0.25mm X 45°

Description

Non-Polarizing Cube Beamsplitters also called NPBS Cube is a more sophisticated type consisting of two right- angle prismscemented together at their hypotenuse faces.The cemented face of one prism is coated.Before cementing, with a metallic or dielectric layer having the desired reflecting properties, both in the percentage of reflection and the desired color. The absorption loss to the coating is minimal and transmission and reflection could be designed to 10%, 20%, 30%, 40%, 50% etc.

Non-Polarizing Cube Beamsplitters Specification:

Material:	BK7 grade A optical glass
Dimension Tolerance:	+0.2, -0.2mm
Thickness Tolerance:	±0.2mm
Surface quality:	60/40
Clear Aperture:	>85%
Flatness:	λ/4 per 25mm@633nm
Parallelism:	±3'
Bevel:	<0.25mm X 45°
Coating:	Hypotenuse surface :Partial reflective coating
	Entrance/Exit surfaces :AR coating
	Reflectance/Transmittance R/T=50/50% ±5% ;
	Other ratio is available: 10:90, 30:70, 50:50, 70:30, or 90:10 Split Ratios
	( R,T are the average of S- and P-pol) ,AOI= 0°