Thorlabs PS905 Right Angle Prism – LOT OF 5

Thorlabs PS905 Right Angle Prism

🔍 Key Specifications

• Material: N‑BK7 borosilicate glass

• Geometry: 3 mm legs × 4.2 mm hypotenuse × 3 mm height

• Type: Right‑angle prism, suitable for 90° beam deviation via total internal reflection (TIR)

• Clear Aperture: ~2.1 mm usable width within the 3 mm face

• Angle Tolerance: ±10 arcminutes

• Dimensional Tolerance: ±0.1 mm

• Surface Quality: 40–20 scratch‑dig, flatness λ/10 at 633 nm

• Transmission Range: Approximately 350 nm to 2 µm (visible through N‑IR)

🧠 Use-Case Fit

• Optical alignment: Efficient 90° beam redirection in confined spaces

• Retroreflection: Using the hypotenuse as input yields a 180° return path

• Compact optics: Where minimal footprint and mounting simplicity are essential

• Cost‑sensitive setups: Good optical performance at a modest price point