A Brief Comparison of Self-Weight Deflection and Optical Path Difference of Lens Mount for Space Applications

Abstract

Optomechanical lenses can experience varying levels of stress, which can have a notable impact on optical parametric systems. To ensure proper alignment, positioning, and location of lens components within design tolerances, it is crucial to have a robust support structure in place for optical systems. The primary load on lens assemblies typically comes from their own weight in different gravity orientations. This study employs an analytical approach to examine the effects of stress resulting from lens mounting on the wave front passing through the lens, which can alter the optical path. Additionally, when an elastomer-mounted lens bears weight, the elastomer can bend, causing the lens to move and the optical axis to become de-centred. Through the use of these analytical methods, designers can identify potential issues with optical elements and mounting conditions, allowing them to take steps to minimize stress. The study's findings underscore the substantial differences in optical path and self-weight deflection between analytical and ideal methods.