Custom N-BK7 Cube Beam Splitter Prism Black Painted Periscope Optical Measuring Prism

How the Cube Beam Splitter Prism Works

Two precision prism elements form a compact cube geometry. A specified internal reflective surface can divide or redirect incident light, while polished entrance and exit faces support controlled transmission. Black matte paint on selected sides can reduce unwanted reflections outside the intended optical path.

Black Painted Sides and Coating Choices

Black matte edge treatment is intended to absorb stray light that reaches non-working faces. The treatment can be applied only where the assembly requires it, leaving designated optical surfaces clear or coated.

• Reflective coating: reviewed for the requested splitting or turning function.
• AR coating: specified by wavelength band, angle of incidence, and operating environment.
• Uncoated faces: available when the optical design or budget does not call for a coating.

Manufacturing Workflow for Custom Optical Prisms

1. Requirement review: confirm drawings, optical path, coating, paint, quantity, and acceptance criteria.
2. Material preparation: select N-BK7 stock suited to the geometry and production volume.
3. Grinding and polishing: process faces and angles to the agreed dimensional and surface requirements.
4. Coating and painting: apply specified optical coating and black matte treatment to defined areas.
5. Inspection and packing: verify the agreed parameters and protect finished optical surfaces for shipment.

Why Work With Felix Glass on a Custom Prism

Felix Glass Co., Limited supports drawing-based optical glass processing from sample evaluation through batch production. Engineering communication can cover glass selection, polish quality, angular tolerance, coatings, black paint, inspection scope, and protective packaging.

For US-market procurement, specifications are presented in practical engineering terms and reviewed against the final assembly rather than treated as a one-size-fits-all catalog item.