Alignment of the Korsch type off-axis 3 mirror optical system using sensitivity table method

Kyoungmuk Lee; Youngsoo Kim; Jinsuk Hong; Sug-Whan Kim; Haeng-Bok Lee; Se-Chol Choi

doi:10.1117/12.2305337

2 May 2018 Alignment of the Korsch type off-axis 3 mirror optical system using sensitivity table method

Kyoungmuk Lee, Youngsoo Kim, Jinsuk Hong, Sug-Whan Kim, Haeng-Bok Lee, Se-Chol Choi

Proceedings Volume 10641, Sensors and Systems for Space Applications XI; 106410P (2018) https://doi.org/10.1117/12.2305337
Event: SPIE Defense + Security, 2018, Orlando, FL, United States

Abstract

The optical system of the entire mechanical and optical components consist of all silicon carbide (SiC) is designed, manufactured and aligned. The Korsch type Cassegrain optical system has 3-mirrors, the primary mirror (M1), the secondary mirror (M2), the folding mirror (FM) and the tertiary mirror (M3). To assemble the M3 and the FM to the rear side of the M1 bench, the optical axis of the M3 is 65.56 mm off from the physical center. Due to the limitation of the mass budget, the M3 is truncated excluding its optical axis. The M2 was assigned to the coma compensator and the M3 the astigmatism respectively as per the result of the sensitivity analysis. Despite of the difficulty of placing these optical components in their initial position within the mechanical tolerance, the initial wave front error (WFE) performance is as large as 171.4 nm RMS. After the initial alignment, the sensitivity table method is used to reach the goal of WFE 63.3 nm RMS in all fields. We finished the alignment with the final WFE performance in all fields are as large as 55.18 nm RMS.

Citation Download Citation

Kyoungmuk Lee, Youngsoo Kim, Jinsuk Hong, Sug-Whan Kim, Haeng-Bok Lee, and Se-Chol Choi "Alignment of the Korsch type off-axis 3 mirror optical system using sensitivity table method", Proc. SPIE 10641, Sensors and Systems for Space Applications XI, 106410P (2 May 2018); https://doi.org/10.1117/12.2305337

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available