Thorlabs offers a range of fixed mounts for optics intended for OEM applications. We offer customizable Polaris® fixed mirror mounts that are fully configurable so that the optical axis height and mounting options can be set for custom setups. We also offer a series of mounts that share a unified optical axis height of 1.50" (38.1 mm), providing beam path consistency and interchangeability to help simplify prototype layout and production integration. Among these are a fixed periscope with interchangeable spacers for variable top beam heights and preconfigured fixed mirror mounts and lens mounts with the uniform 1.50" optic height.