title: Linear astigmatism of confocal off-axis reflective imaging systems and its elimination.
abstract: Linear astigmatism of a confocal off-axis reflective imaging system when the object plane is tilted and located at a finite distance from the imaging system is derived. We show that linear astigmatism can be eliminated by proper configuration of the parent mirror axes in confocal off-axis two-mirror systems. The tilt angle of the image plane is also derived. The developed theory is verified by ray-tracing analysis of an example system.
authors.affiliation: Devices Laboratory, Materials and Devices Research Center, Samsung Advanced Institute of Technology, Suwon, Korea. chang@offaxis.co.kr
authors.forename: Seunghyuk
authors.initials: S
authors.lastname: Chang
authors.forename: Jung Hoon
authors.initials: JH
authors.lastname: Lee
authors.forename: Suk Pil
authors.initials: SP
authors.lastname: Kim
authors.forename: Hun
authors.initials: H
authors.lastname: Kim
authors.forename: Won Joo
authors.initials: WJ
authors.lastname: Kim
authors.forename: Ihun
authors.initials: I
authors.lastname: Song
authors.forename: Youngsoo
authors.initials: Y
authors.lastname: Park
mesh_terms: D000465:Algorithms; D016477:Artifacts; D003198:Computer Simulation; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D016014:Linear Models; D018613:Microscopy, Confocal / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity