High Quality Right Angle Prism Bk7
Total internal reflection prisms
90°or 180° beam deflection
These uncoated right angle prisms are made from UV transmitting Fused Silica .They may be used in a variety of ways for beam deviation or as substrates for beamsplitters. When a beam enters normal to one of the legs of the prism it arrives at the hypotenuse face at an incidence greater than the critical angle .It is totally internally reflected at the hypotenuse and emerges normal to the other leg face. If the beam is input normal to the hypotenuse face it undergoes two total internal reflections at the leg faces and emerges in the opposite direction (180°deflection).Many different coatings may be applied to these prisms and some of the more common types are described on the following page .If you need other coatings please contact Henghua.
Specifications
Material: UV Fused Silica
Surface Flatness: < λ/8 @ 633nm
Surface Quality : <20/10
Dimension Tolerance : <+0.00/-0.20mm
Angle Tolerance : ≤30 arcsec
Perpendicularity： <5 arcmin
Clear Aperture : ≥85% of central circular dimension
Bevel : 0.3mm (typical) x 45°
Anti-reflection Coating : R≤0.25%(typical) on both legs
Part No. A(mm)
RAP-05U 5
RAP-06.35U 6.35
RAP-10U 10
RAP-12.7U 12.7
RAP-15U 15
RAP-20U 20
RAP-25.4U 25.4
RAP-38.1U 38.1
RAP-50.8U 50.8
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