Custom IR Optics Germanium Prisms

Germanium right angle prisms are used in optical systems for beam steering and folding applications. They are made of germanium (Ge) and deflect light by 90 degrees through two reflections, thereby causing the image to deflect and stand upright. Germanium is a popular material for use in IR optical systems because it has a high index of refraction and transmits over a broad spectral range from 2 to 14 microns. Based on the principle of total internal reflection (TIR), right-angle prisms can be used as 90-degree reflection mirrors or 180-degree retroreflectors. In addition to the losses caused by reflection, total internal reflection can exhibit a 100% reflectivity over a wide range of wavelengths.

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Multiple Customization Options

Custom Material & Substrate

We provide one of the best substates for your optics, including infrared materials, visible optical glass, chalcofenide glass, plastic, metel, and more on demand.

Custom Shape & Structure

From general to special surface profiles, we are able to achieve high quality. Our products include flat, spherical, aspherical, and curved optics, among others.

Custom Coating

Our coatings are precise and in-house, including anti-reflection, multi-band, conductive, edge filter, variable, metallic, dielectric coatings, and more finishes.

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Relevant Applications & Markets


Custom optics for laser cutting, drilling, engraving, and more.
Optical parts with low absorption in the infrared spectral region.
Optics with reliable absorption or transmission properties.
Custom objective lens and ocular lens for night vision.
Custom spheres, aspheres, curved optics for detectors.
Precise optics for gun laying, hand-held devices and more.
MWIR and LWIR optics with light weight to support the system.
Custom optics with high transmission and blocking level.
Highly functional IR optics for imaging in different industries.

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