UV Beamsplitter, 12.5 mm Diameter, 2.00 mm Thickness, 30R/70T ratio

The UVBS11-2 UV Beamspliter is a 12.5 mm diameter, 2.0 mm thick UV Fused Silica beamsplitter with 30/70 reflection/transmission ratio optimized for 45° angle of incidence. This beamsplitter is designed for UV applications covering spectral range from 250 nm to 450 nm, featuring low absorption and excellent thermal stability. The back surface of the beamsplitter has a wedge that is less than 5 arc minutes to reduce undesired interference effects caused by the back reflections from both surfaces of the optics.

Specifications

Technical Specs

Wavelength Range
250-450 nm
Diameter
12.5 mm
Material
UV Grade Fused Silica
Coating Second Surface
AR (R_avg <1%, R_abs <2%)
Angle of Incidence
45°±3°
Reflection
R_abs = 30 ±5% @ 350 nm, R_avg = 30 ±10% @ 250-450 nm
Transmission
T_abs = 70 ±5% @ 350 nm, T_avg = 70 ±10% @ 250-450 nm
Surface Flatness
≤1 λ at 632.8 nm over the clear aperture

Diameter Tolerance
+0.0/-0.2 mm
Thickness
2.0 mm
Thickness Tolerance
±0.38 mm
Parallelism
< 5 arc minutes
Clear Aperture
> central 85% of diameter
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Wavelength Range
250-450 nm
Diameter
12.5 mm
Material
UV Grade Fused Silica
Coating Second Surface
AR (R_avg <1%, R_abs <2%)
Angle of Incidence
45°±3°
Reflection
R_abs = 30 ±5% @ 350 nm, R_avg = 30 ±10% @ 250-450 nm
Transmission
T_abs = 70 ±5% @ 350 nm, T_avg = 70 ±10% @ 250-450 nm
Surface Flatness
≤1 λ at 632.8 nm over the clear aperture

Diameter Tolerance
+0.0/-0.2 mm
Thickness
2.0 mm
Thickness Tolerance
±0.38 mm
Parallelism
< 5 arc minutes
Clear Aperture
> central 85% of diameter
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Resources & Downloads

3D Product Models

Other

UVBS11-2 RoHS Certificate(705.5 kB, PDF)

Related Products

Similar

	Compare	Description	Compatibility	Drawings, CAD & Specs	Avail.	Price
		UV Cube Beam Splitter, Polarizing, 12.7 mm, 351-355 nm Laser Line	UNIVERSAL				Learn More
		UV Beamsplitter, 12.5 mm Diameter, 2.00 mm Thickness, 50R/50T ratio	UNIVERSAL				Learn More

Compatible

Description	Compatibility
Variable Size Lens Mount, 5.0-46.2 mm, Thumbscrew Support Arms	UNIVERSAL	Learn More
Variable Size Lens Mount, 12.7-35 mm, 40 TPI XY Adjusters	UNIVERSAL	Learn More
Lens Mount, Self-Centering, 0.125-1.063 in. Diameter Lenses	IMPERIAL	Learn More
Lens Mount, Self-Centering, 3.2-27 mm Diameter	METRIC	Learn More
V-Groove Lens Holder, 0.25 to 1.25 in. Diameter Lenses	UNIVERSAL	Learn More

Need help?

Contact an Applications Specialist by sending us an email