Design of non-axially symmetric systems · system. Prof. Jose Sasian Short Course Concatenation of...

Prof. Jose Sasian Short Course

Design of un-obstructed reflective systems


Symmetry

• Axially symmetry• Double plane symmetry• Plane symmetry• Monocentric symmetry• Confocal symmetry• Non identiafiable symmetry


Methods of design for NRS

• Eccentric and off-axis sections• Annular or Ring field systems• Concatenation of well corrected

systems• Tilted component theory• Expansion about the Optical Axis Ray• Confocal systems


Eccentric and off-axis systems


Annular or Ring field systems

Perkin-Elmer’sMicralignconcept byA. Offner 1975


Ring-field system for EUV lithography Annular surfaces


Concatenation of systems Example: on axis aspheric

system


Concatenation of systems Example: Reed and Schwarzschild systems by David Shafer


Tilted component system

Tilted Component Optical Systems, Richard Buchroeder, Ph. D. Dissertation, University of Arizona


Scheimpflug condition


Displacement of the aberration field center


Aberration fields

K. Thompson, "Description of the third-order optical aberrations of near-circular pupil optical systems without symmetry," J. Opt. Soc. Am. A 22, 1389-1401 (2005)


Plane symmetric systems:Expansion about the OAR


Plane symmetric aberration function


Aberrations of aPlane symmetric system


Aberration coefficients


Aberration coefficient calculation


Basic forms of astigmatism


Behavior of coma


Confocal arrangement of mirrors:No aberration along the optical axis ray.

Excellent starting design point

OAR

Use paraboloids, ellipsoids, hyperboloids


Examples


Optical surfaces ....

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Amateur telescopes I


Amateur telescopes II


Double curvature mirrors I

ToroidEllipsoidElliptical paraboloid


Double curvature mirrors II


Double curvature mirrors III


A 1.6 m off-axis paraboloid

R=13 mD=1.6 mE=2.4 m


Confocal system: Cassegrain telescope made unobstructed

Design of non-axially symmetric systems · system. Prof. Jose Sasian Short Course Concatenation of...

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