Opto-mechanical design of a beam launch telescope

Il Moon; Soosang Lee; Myung K. Cho

doi:10.1117/12.615155

9 September 2005 Opto-mechanical design of a beam launch telescope

Il Moon, Soosang Lee, Myung K. Cho

Proceedings Volume 5877, Optomechanics 2005; 58770I (2005) https://doi.org/10.1117/12.615155
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The design and development of a beam launch telescope (BLT) was addressed herein. The BLT optical instruments have been commonly used for the applications of adaptive optics (laser guide star), optical communications, and other laser powered optical systems. In this study, a BLT with a primary mirror of 700 mm was investigated as a prototype optical system. The BLT optical system includes a lightweight primary mirror of 700 mm in daimeter, a secondary mirror of 110 mm, a fast steering mirror of 200 mm, and three flat mirrors (array/relay mirrors) of 200 mm. As a test bed, the BLT system was optimized for a spot size of 100mm at a far field (departed by 1km from the telescope). In this design and development study, a wide range of the opto-mechanical and structural analyses have been performed including: static (gravity and thermal), frequency, dynamic and response analysis, and optical evaluations for minimum optical deformation. The EDS I-DEAS Finite Element program and the PCFRINGE optical program are mainly used to fulfill this analysis. Image motion is also calculated based on line of sight (LOS) sensitivity equations integrated in finite element models.

Citation Download Citation

Il Moon, Soosang Lee, and Myung K. Cho "Opto-mechanical design of a beam launch telescope", Proc. SPIE 5877, Optomechanics 2005, 58770I (9 September 2005); https://doi.org/10.1117/12.615155

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