Design of a twenty-element long focal length zoom lens
- EG and G, Inc., Los Alamos, NM (United States)
- Optical Systems Scientist, Santa Monica, CA (United States)
- Frank Mitchell & Associates, South Pasadena, CA (United States)
An optical lens system with varying magnification has been designed for a 70-mm image format. Twenty optical elements were needed to provide for the 345- to 1050-mm focal length zoom range as well as the proper color correction over the visible spectrum. A 4-in diameter port window limits the f/# of the optical lens system. Operation of the lens system is done by actuating stepping motors through a MacPlus computer. This lens system was designed for Los Alamos National Laboratory Group M-8, because no commercial zoom lens existed that would change its reduction from 1/15 to 1/4 at a focusing range of 5 meters. Additionally, we required a larger, non-standard image size that could be recorded by a rotating mirror streak camera. A Nikkor lens sales manual does offer a long focal length, 35-mm lens only upon special order. The closest focusing range of this Nikkor lens is 6 meters.
- Research Organization:
- EG and G, Inc., Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC08-88NV10617
- OSTI ID:
- 6067083
- Report Number(s):
- EGG--10617-5039; CONF-900756--60; ON: DE91010770
- Country of Publication:
- United States
- Language:
- English
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