Prisms are used to manipulate a beam or image in an optical system. The number of polished surfaces and the angle displacement between them are system dependent. Used to reflect or refract light at precise angles, our prisms and beam splitters are made from any optical glass, filter glass or fused silica and can be coated to your exact specifications.
Optical Glass • Fused Silica • Filter Glass
4mm – 100mm
|Dimensional Tolerances||Commercial||Precision||Max Capability|
|Diameter (mm)||+/- 0.10||+/- 0.05||+/- 0.01*|
|Center Thickness (mm)||+/- 0.15 to 0.20||+/- 0.10 to 0.05||+/- 0.02|
|Angular Accuracy||5' min.||3'||2'|
|Surface Tolerances||Commercial||Precision||Max Capability|
|Surface Quality (scratch-dig)||80 – 50||60 – 40||10 – 5|
|Surface Roughness (ARMS)||—||10*||5*|
|Surface Irregularity (Fringes, P-V @ 633nm)||2 to 4||1/2 to 1||1/5|
|Surface Power (Fringes, P-V @ 633nm)||—||—||—|
|Centration (Ray deviation)||5+ min.||2 – 3 min.||10 sec.|
|* material and size dependent|
After a quote is generated by one of the Manufacturing Engineers for the particular prism or beam splitter, near net shape optical glass blanks are ordered and sent to the production line. The blank will be blocked to a tool and sent to generation, where it will be ground into a closer shape. After generation comes fine grinding, which includes grinding the prisms more precisely to reach the order's specifications. Finally, the optical prism will be polished on all desired surfaces. The prisms will either be sent out to the customer or retained in the facilities for further treatment with processes such as custom coatings and truncations. For a beam splitter, two prisms follow the outline above, are coated, matched together, then cemented.
We have extensive in-house coating capabilities to meet your requirements. See our coating capabilities.
|Uses for Prisms & Beam Splitters|
|Telescopes||LASIK devices||Machine vision|
|Ophthalmology||Threat detection||Laser target designators|