27 November 2017 Optimal power distribution for minimizing pupil walk in a 7.5X afocal zoom lens
Author Affiliations +
Proceedings Volume 10590, International Optical Design Conference 2017; 105901B (2017) https://doi.org/10.1117/12.2292268
Event: International Optical Design Conference - IODC 2017, 2017, Denver, United States
Abstract
An extensive design study was conducted to find the best optimal power distribution and stop location for a 7.5x afocal zoom lens that controls the pupil walk and pupil location through zoom. This afocal zoom lens is one of the three components in a VIS-SWIR high-resolution microscope for inspection of photonic chips. The microscope consists of an afocal zoom, a nine-element objective and a tube lens and has diffraction limited performance with zero vignetting. In this case, the required change in object (sample) size and resolution is achieved by the magnification change of the afocal component. This creates strict requirements for both the entrance and exit pupil locations of the afocal zoom to couple the two sides successfully. The first phase of the design study looked at conventional four group zoom lenses with positive groups in the front and back and the stop at a fixed location outside the lens but resulted in significant pupil walk. The second phase of the design study focused on several promising unconventional four-group power distribution designs with moving stops that minimized pupil walk and had an acceptable pupil location (as determined by the objective and tube lens).
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wanyue Song, Yang Zhao, Rebecca Berman, S. Yvonne Bodell, Eryn Fennig, Yunhui Ni, Jonathan C. Papa, Tianyi Yang, Anthony J. Yee, Duncan T. Moore, Julie L. Bentley, "Optimal power distribution for minimizing pupil walk in a 7.5X afocal zoom lens", Proc. SPIE 10590, International Optical Design Conference 2017, 105901B (27 November 2017); doi: 10.1117/12.2292268; https://doi.org/10.1117/12.2292268
PROCEEDINGS
7 PAGES


SHARE
RELATED CONTENT

Optical design of a 10x zoom lens objective for the...
Proceedings of SPIE (December 14 2001)
Variable spherical aberration generators
Proceedings of SPIE (September 25 1997)
MWIR zoom with focal extender
Proceedings of SPIE (December 18 2012)
Forty years of modern zoom lens design
Proceedings of SPIE (August 24 2005)
Applications Of The Microscope System LSM
Proceedings of SPIE (February 09 1989)

Back to Top