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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Search results

Showing 1 to 4 of 4 (0.035 seconds)

Spelling suggestions: "subject:"room lenses."" "subject:"boom lenses.""

1

Design of a zoom condenser system

Chen, Muh-fa, 1942- January 1977 (has links)
No description available.
Zoom lenses.
2

Optical zoom system for target projection

Anderson, Ronald Colbert, 1933- January 1973 (has links)
No description available.
Space photography.
Zoom lenses.
3

Zoom techniques for achieving scale invariant object tracking in real-time active vision systems /

Nelson, Eric D. January 2006 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2006. / Typescript. Includes bibliographical references (leaves 76-78).
4

Photographic zoom fisheye lens design for DSLR cameras

Yan, Yufeng, Sasian, Jose 27 September 2017 (has links)
Photographic fisheye lenses with fixed focal length for cameras with different sensor formats have been well developed for decades. However, photographic fisheye lenses with variable focal length are rare on the market due in part to the greater design difficulty. This paper presents a large aperture zoom fisheye lens for DSLR cameras that produces both circular and diagonal fisheye imaging for 35-mm sensors and diagonal fisheye imaging for APS-C sensors. The history and optical characteristics of fisheye lenses are briefly reviewed. Then, a 9.2- to 16.1-mm F/2.8 to F/3.5 zoom fisheye lens design is presented, including the design approach and aberration control. Image quality and tolerance performance analysis for this lens are also presented. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
fisheye lenses
zoom lenses
two group zooms
lens design
aberration compensation

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