Triangular prism

fused silica

• Laser or laboratory quality • Fused silica or glass • 90 or 180 degree reflection • Antireflection coatings available A Right Angle Prism is used to turn or deflect a beam through 90° or 180°. In either case this is achieved by total internal reflection and produces a very efficient broadband reflector. It is important that the incoming beam is collimated and enters the prism at a normal angle of incidence. This is so that total internal reflection can be achieved. A range of both laser and laboratory quality prisms are available. These are available in either fused silica or BK7 glass.