The influence of the secondary mirror position and the lightweight primary mirror on optical performances

S. J. Park; S. H. Sim; C. S. Chung; E. C. Kang; J. K. Kim

doi:10.1117/12.668143

1 February 2006 The influence of the secondary mirror position and the lightweight primary mirror on optical performances

S. J. Park, S. H. Sim, C. S. Chung, E. C. Kang, J. K. Kim

Author Affiliations +

Proceedings Volume 6034, ICO20: Optical Design and Fabrication; 60341A (2006) https://doi.org/10.1117/12.668143
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

To design a laser beam director (LBD), we considered the ritchey chretien system with a hyperbolic mirror surface. The aperture sizes of the designed primary mirror and secondary mirror were 800 mm and 120 mm, respectively, and the obstruction ratio was 0.3. Energy distribution on the target surface was studied in terms of a spot diagram and encircled energy in order to investigate the optical performance of the LBD system. As the LBD system was designed to focus on the various positions of target by varying the position of the secondary mirror, we developed the computer program called LOSA (Large Optical System Assessment) to investigate the influence of the position of the secondary mirror on optical performance. To reduce weight of the primary mirror of the LBD, we also considered the primary mirror of a double arch shape with parabolic contours. Deformation of the primary mirror caused by gravity was not rotationally symmetrical about the mirror axis. We also used the LOSA program to analyze the influence of the light weight primary mirror on optical performance, and finally determined the optimum structure of the primary mirror.

Citation Download Citation

S. J. Park, S. H. Sim, C. S. Chung, E. C. Kang, and J. K. Kim "The influence of the secondary mirror position and the lightweight primary mirror on optical performances", Proc. SPIE 6034, ICO20: Optical Design and Fabrication, 60341A (1 February 2006); https://doi.org/10.1117/12.668143

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