45-90-45 · BK7 or fused silica

Large Right Angle Prism — 25 mm

Large-format, high-quality right angle prisms for experimentation, research and education — stock items for immediate shipment. Available in BK7 or UV fused silica from 12.5 to 50 mm (A=B=C). Dimensional tolerance ±0.1 mm, flatness λ/4 @ 632.8 nm, angle tolerance ±30 arc seconds, pyramid error under 10 arc minutes. Coatings and custom variations on special order.

Specifications

Material

BK7 or UV fused silica

Geometry

45°-90°-45°, A=B=C

Sizes

12.5, 15, 20, 25, 50 mm

Dimensional tolerance

±0.1 mm

Flatness

λ/4 @ 632.8 nm

Surface quality

40-20 scratch-dig

Angle tolerance

±30 arc seconds

Pyramid error

<10 arc minutes