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Transcript 
05/05/2017
Lens Aberrations
Fundamentals
Optical Engineering
Prof. Elias N. Glytsis
School of Electrical & Computer Engineering
National Technical University of Athens
Aberrations
(3rd order – Seidel)
Chromatic
Monochromatic
• Spherical
• Coma
• Astigmatism
• Field Curvature
• Distortion
3rd order
3rd order
optics.hanyang.ac.kr/~shsong/20-Aberration%20theory.pdf
Prof. Elias N. Glytsis, School of ECE, NTUA
2
Spherical Aberration (3rd order – Seidel)
3rd order – Seidel
F. L. Pedrotti et al., “Introduction to Optics”, 3nd Ed., Prentice Hall, New Jersey,2006
Prof. Elias N. Glytsis, School of ECE, NTUA
3
Aberrations (3rd order – Seidel)
F. L. Pedrotti et al., “Introduction to Optics”, 3nd Ed., Prentice Hall, New Jersey,2006
Prof. Elias N. Glytsis, School of ECE, NTUA
4
Aberrations (3rd order – Seidel)
Prof. Elias N. Glytsis, School of ECE, NTUA
5
Aberrations (3rd order – Seidel)
Prof. Elias N. Glytsis, School of ECE, NTUA
6
Spherical Aberration
http://en.wikipedia.org/wiki/Lens_(optics)
http://amazing-space.stsci.edu/resources/explorations/groundup/lesson/basics/g11/
Prof. Elias N. Glytsis, School of ECE, NTUA
7
Plano-Convex Lens
Prof. Elias N. Glytsis, School of ECE, NTUA
8
Convex-Plano Lens
Prof. Elias N. Glytsis, School of ECE, NTUA
9
Comparison of the Spherical Aberration
of a Plano-Convex Lens and a Convex-Plano Lens
Prof. Elias N. Glytsis, School of ECE, NTUA
10
Biconvex Lens
Prof. Elias N. Glytsis, School of ECE, NTUA
11
Spherical Aberration of a Biconvex Lens
Prof. Elias N. Glytsis, School of ECE, NTUA
12
Sphere Lens
Prof. Elias N. Glytsis, School of ECE, NTUA
13
Spherical Aberration of a Dielectric Sphere
Prof. Elias N. Glytsis, School of ECE, NTUA
h (mm)
f (mm)
5
50.4
10
49.4
15
47.6
20
45.0
25
41.6
30
37.3
35
31.8
40
24.8
45
15.8
14
Spherical Aberration
Shape Factor
http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/imggo/meniscus.gif
Prof. Elias N. Glytsis, School of ECE, NTUA
15
Spherical Aberration (3rd order)
Jenkins and White, “Fundamentals of Optics”, 4th Ed., McGraw-Hill, 2001
Prof. Elias N. Glytsis, School of ECE, NTUA
16
Spherical Aberration Correction
Prof. Elias N. Glytsis, School of ECE, NTUA
17
Astigmatism
http://www.handprint.com/ASTRO/ae4.html
Prof. Elias N. Glytsis, School of ECE, NTUA
18
Astigmatism
Horizontal Focus
Prof. Elias N. Glytsis, School of ECE, NTUA
Vertical Focus
19
Astigmatism (Examples)
http://acuitylaservision.com/category/all-about-eyes/medical-blog-acuity/page/3/
Prof. Elias N. Glytsis, School of ECE, NTUA
20
Astigmatism Causes Blurring of the Image
Prof. Elias N. Glytsis, School of ECE, NTUA
21
Coma
http://www.cheyennezjphotographer.com/photography/lenses-2/
http://en.wikipedia.org/wiki/Lens_(optics)
Prof. Elias N. Glytsis, School of ECE, NTUA
22
Coma (Examples)
http://www.handprint.com/ASTRO/ae4.html
Prof. Elias N. Glytsis, School of ECE, NTUA
23
Field Curvature
http://www.microscopyu.com/tutorials/java/aberrations/curvatureoffield/
http://www.cheyennezjphotographer.com/photography/lenses-2/
Prof. Elias N. Glytsis, School of ECE, NTUA
24
Field Curvature
http://www.handprint.com/ASTRO/ae4.html
Prof. Elias N. Glytsis, School of ECE, NTUA
25
Field Curvature
Notice that with a closed iris the distortion is greatly
reduced, however the light gathering power of the lens
is also reduced. Under dim fluorescence conditions the
decrease in pixel intensity may be unacceptable.
Prof. Elias N. Glytsis, School of ECE, NTUA
26
Distortion
Prof. Elias N. Glytsis, School of ECE, NTUA
27
Pincushion distortion aberration
Prof. Elias N. Glytsis, School of ECE, NTUA
28
Pincushion distortion aberration
Prof. Elias N. Glytsis, School of ECE, NTUA
29
Barrel distortion aberration
Prof. Elias N. Glytsis, School of ECE, NTUA
30
Distortion Aberrations
Pincushion
Barrel
Prof. Elias N. Glytsis, School of ECE, NTUA
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Chromatic Aberration
http://en.wikipedia.org/wiki/Lens_(optics)
Chromatic Aberration Correction
http://en.wikipedia.org/wiki/Lens_(optics)
Prof. Elias N. Glytsis, School of ECE, NTUA
32
Chromatic Aberration
Prof. Elias N. Glytsis, School of ECE, NTUA
33
Chromatic Aberration
Prof. Elias N. Glytsis, School of ECE, NTUA
34
Chromatic Aberration
Prof. Elias N. Glytsis, School of ECE, NTUA
35
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