Beamsplitter Penta Prism


Products Description:


Beamsplitters are optical components used to split input light into two separate parts. Beamsplitters are common components in laser or illumination systems. Beamsplitters are also ideal for fluorescence applications, optical interferometry, or life science or semiconductor instrumentation.

By adding a wedge and with partial reflective coating on first reflective surface, Penta Prism can be used as Beamsplitter. From prototype to production, Focus Technoloy manufactures Beamsplitter Penta Prism with standard Transmission/reflection (T/R) ratio of 10/90,50/50.

Technical Parameters: 


BK7 Grade A Optical Glass

Dimension (mm):

2.5x2.5 ~ 100x100

Dimension Tolerance (mm):

+/-0.2 (General), +0/-0.05 (High Precision)

90° Deviation Tolerance:

1 arc min.(General),3 arc sec.(High Precision)

Angle Tolerance:

5 arc min. (General), 3 arc sec. (High Precision)

Surface Quality:

80/50 (General), 10/5 (High Precision)

Flatness (per 25mm@633nm):

λ/2(General), λ/8 (High Precision)



Beamsplitter Ratio Transmissio/Reflection:

10/90±5 or 50/50±5 


Uncoated or AR coating--Unpon Request

Note for Beamsplitter Penta Prism:
(1). Apart from N-BK7 glass, other optical glass is available for custom-made Penta Prisms.
(2). Typical dimension Axh is from 2.5x2.5-100.0x100.0 mm.
(3). Typical deviation tolerance is 1 minute, better precision such as 30 seconds, 10 seconds, 5 seconds, 
       3 seconds is available.
(4). Typical reflection is >90% by Al coating, other metal coating such as Ag, Cu, or High Reflection 
      Dielectric Coating is available.
(5). Typical Beamsplitter Ratio Transmission/Reflection is 10/90±5 or 50/50±5, other Ratio is available.
(6). Apart from uncoating, Anti-Reflective(AR) coating is available as request..

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