Beamsplitters are used to divide or combine two or more beams of light. A standard simple beamsplitter may be a thin piece of fused silica or glass inserted into the beam of light.

Plate beamsplitters mirror coated reflect a portion of the incident energy, absorb a small portion and transmit the remaining energy. They have controlled coatings to give various gradients of transmission and reflection.

Laser and broad beamsplitters consist of thin film coatings applied to wedged or plano windows giving a 50:50 split.

POLKA-dot beamsplitters are UV fused silica substrates vacuum coated with an enhanced aluminium coating in fixed squares or diameters. The split ration (normally 50/50) can be controlled and coated to custom ratios. The light is reflected off the polka dot coating and the remaining light can pass through.

Beamsplitters are ideal for use in monochromaters, spectrophotometers, scientific instrumentation and optical systems.

For standard uncoated beamsplitters, see materials page for available glass types.