Hypotenuse-coated right angle mirrors are also known as turning mirrors. Each mirrors hypotenuse is coated with broadband dielectric, metallic, or laser line coating. The mirrors are designed for applications requiring right-angle reflections and increased rigidity.
| ATTRIBUTE | SPECIFICATIONS |
| material | N-BK7 or specified |
| DIAMETER TOLERANCE | +0.1, -0.1mm |
| angle TOLERANCE | +/- 3 arc minutes |
| flatness | λ/4@632.8nm |
| CLEAR APERTURE | >90% |
| SURFACE QUALITY | 40/20 scratch and dig |
| BEVEL | < 0.2 mm x 45° |
| COATING | With HR coating on hypotenuse surface |
