Black-painted Prism

Edge blackening is a widely utilized optical technique aimed at reducing the effects of stray light, minimizing internal reflections, and enhancing the contrast of optical systems.

This process involves applying a light-absorbing material, such as black paint or coating, to the edges or non-working surfaces of optical components like lenses, prisms, or windows.

By blackening non-working surfaces, designers can reduce scattered light and absorb secondary reflections, thus enhancing imaging contrast and minimizing ghosting or flare.

Material: N-BK7 / UV Fused Silica
Dimensions (L x W x H): as per your need
Dimensional Tolerance: +/- 0.1 mm
Angle Tolerance: +/- 3 arcmin
Surface Quality: 40-20 Scratch-Dig
Surface Flatness: λ/4 @ 632.8nm
Clear Aperture: >90% of entrance / exit faces
Bevel: 0.2 - 0.5 mm x 45°
Coating - Transmitting Faces: AR Coating, R<0.5%
Coating - Reflecting Face: Aluminized + Black Paint Overcoat / or TIR, uncoated
Blackening: All non-transmitting surfaces blackened with matte black paint to reduce stray light
Chamfer / Edge:Edge-blackened, matte finish

Can be customized according to your requirements