Ellis I. Betensky
Retired at
SPIE Involvement:
Fellows Committee | Fellow status | Conference Program Committee | Conference Chair | Editor | Author | Instructor
Publications (18)

SPIE Conference Volume | September 18, 2015

PROCEEDINGS ARTICLE | September 3, 2015
Proc. SPIE. 9580, Zoom Lenses V
KEYWORDS: Chromatic aberrations, Monochromatic aberrations, Optical design, Image compression, Control systems, Lens design, Zoom lenses, Chemical elements, Automatic exposure, Content addressable memory

PROCEEDINGS ARTICLE | October 19, 2012
Proc. SPIE. 8488, Zoom Lenses IV
KEYWORDS: Optical transfer functions, Modulation, Imaging systems, Spatial frequencies, Fourier transforms, Lens design, Image quality, Aspheric lenses, Zoom lenses, Modulation transfer functions

PROCEEDINGS ARTICLE | October 19, 2012
Proc. SPIE. 8488, Zoom Lenses IV
KEYWORDS: Optical design, Radon, Patents, Cameras, Sensors, Manufacturing, Computing systems, Lens design, Zoom lenses, Geometrical optics

SPIE Conference Volume | October 8, 2012

PROCEEDINGS ARTICLE | September 27, 2008
Proc. SPIE. 7100, Optical Design and Engineering III
KEYWORDS: Telescopes, Optical design, Metrology, Optical spheres, Manufacturing, Lens design, Aspheric lenses, CRTs, Optics manufacturing, Surface finishing

Showing 5 of 18 publications
Conference Committee Involvement (5)
Zoom Lenses VI
11 August 2019 | San Diego, California, United States
Zoom Lenses V
11 August 2015 | San Diego, California, United States
Zoom Lenses IV
12 August 2012 | San Diego, California, United States
Zoom Lenses III
31 July 2001 | San Diego, CA, United States
Zoom Lenses II
28 July 1997 | San Diego, CA, United States
Course Instructor
SC381: Introduction to Zoom Lens Design
This course provides attendees with a basic understanding of how various types of zoom lenses function, and particularly the limitations of their optical designs. The emphasis of the course is an understanding of how: the magnification is changed; the image position is stabilized; aberrations result; aberrations are corrected. Existing designs are examined to illustrate the concepts involved. This course shows you how optical design programs work with zoom lenses.
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