High Resolution Specimen Area Imaged Under Negligible Field Aberrations
1970 ◽
Vol 28
◽
pp. 540-541
◽
Keyword(s):
It is significant to note field aberrations (chromatic field aberration, coma, astigmatism and blurring due to curvature of field, defined by Glaser's aberration theory relative to the Blenden Freien System) of the objective lens in connection with the following three points of view; field aberrations increase as the resolution of the axial point improves by increasing the lens excitation (k2) and decreasing the half width value (d) of the axial lens field distribution; when one or all of the imaging lenses have axial imperfections such as beam deflection in image space by the asymmetrical magnetic leakage flux, the apparent axial point has field aberrations which prevent the theoretical resolution limit from being obtained.
1994 ◽
Vol 52
◽
pp. 410-411
1980 ◽
Vol 38
◽
pp. 64-65
Keyword(s):
1980 ◽
Vol 38
◽
pp. 56-57
1974 ◽
Vol 32
◽
pp. 444-445
Keyword(s):
1969 ◽
Vol 27
◽
pp. 176-177
◽
1972 ◽
Vol 30
◽
pp. 418-419
1991 ◽
Vol 49
◽
pp. 416-417
1994 ◽
Vol 52
◽
pp. 484-485
1990 ◽
Vol 48
(1)
◽
pp. 70-71