Penta Prisms are an essential optical component designed to deviate a light beam by 90 degrees without inverting or reversing the image. This unique property makes them highly advantageous in applications where maintaining the orientation of the image is crucial, yet precise control over the prism's orientation is not feasible. The constant deviation characteristic of penta prisms ensures that the 90-degree deviation angle is preserved for all rays passing through the effective aperture, regardless of their angle relative to the optical axis.

Due to the specific geometry of penta prisms, the reflecting surfaces do not rely on total internal reflection. Instead, these surfaces require a specialized coating, either metal or dielectric, to achieve the desired reflective properties. This necessity for coating further enhances the versatility and applicability of penta prisms across a wide range of optical systems.

At Rocky Mountain Instrument Co. (RMI), our commitment to quality and precision is evident in our standard specifications for penta prisms. We offer a selection of materials including BK7, UVFS, FS, and CaF2, each chosen for its superior optical properties. Our meticulous manufacturing process ensures that all polished surfaces meet stringent surface figure and quality standards, providing exceptional performance in demanding optical environments.

RMI's dedication to excellence extends beyond the product itself; we engage collaboratively with our clients from the initial stages of development. Our goal is to transform innovative prototype concepts into efficient, manufacturable solutions that meet even the most technically challenging requirements. This customer-centric approach is the foundation of our service philosophy, ensuring that we deliver optical components that not only meet but exceed expectations.