Linear astigmatism of confocal off-axis reflective imaging systems and its elimination.
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.
Chang
Seunghyuk
S
Devices Laboratory, Materials and Devices Research Center, Samsung Advanced Institute of Technology, Suwon, Korea. chang@offaxis.co.kr
Lee
Jung Hoon
JH
Kim
Suk Pil
SP
Kim
Hun
H
Kim
Won Joo
WJ
Song
Ihun
I
Park
Youngsoo
Y
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