High-Precision Right Angle Prism for Laser & Optical Applications

High-Precision Right Angle Prism for Laser & Optical Applications

right angle prism

optical prism

precision optics

High-precision right angle prism manufactured from N-BK7, K9, or UV Fused Silica optical glass, featuring a 90° apex angle with two perpendicular faces and one hypotenuse face.

Designed for 90° beam deflection, total internal reflection (TIR), image inversion, and retroreflection (180° return path).

Each prism is fine-annealed, diamond-polished, and inspected under interferometer to meet strict wavefront and angular tolerances required for laser systems and precision optical instruments.

Available uncoated for TIR operation or with custom AR / reflective coatings for maximum efficiency at specific laser wavelengths. Ideal for beam steering, periscope assemblies, interferometers, and OEM laser modules.

Description

Factory conventional optical glass right angle prism custom optical prism

Specifications:

Material: N-BK7 (nd=1.5168, νd=64.2) / K9 (H-K9L) / B270 / UV Fused Silica (JGS1) / H-ZF6 / Custom

Prism Type: Right Angle Prism (90° Apex)

Angle Configuration: 90° – 45° – 45° (Standard)

Beam Deviation: 90° (Hypotenuse input) / 180° Retroreflector (Both legs input)

Typical Size (Leg Length): 5mm / 10mm / 12.7mm / 15mm / 20mm / 25mm / 25.4mm / 30mm / 50mm / Custom

Dimension Tolerance: ±0.05mm – ±0.1mm

Angle Tolerance: ±3 arc min (Commercial) / ±30 arc sec (Precision) / ±5 arc sec (High Precision)

Surface Flatness: λ/4 @ 632.8nm (Standard) / λ/10 (High Precision)

Surface Quality (Scratch-Dig): 60-40 (Standard) / 40-20 / 20-10 (Laser Grade)

Clear Aperture: >90% of face area

Bevel / Chamfer: 0.1–0.3mm × 45°

Wavefront Distortion: λ/4 per 25mm (Standard)

Coating Options:

Hypotenuse Face: Uncoated (TIR Mode) / Protected Aluminum / Enhanced Aluminum / Protected Silver / Dielectric HR @ Specific Wavelength
Leg Faces: Uncoated / MgF₂ AR / Broadband AR 400–700nm / V-Coating @ 532nm / 633nm / 1064nm / Custom

Transmittance Range: 350nm – 2000nm (BK7/K9) / 185nm – 2100nm (UV Fused Silica)

Temperature Range: -40°C to +80°C