August 2004
Beginner to intermediate
336 pages
10h 49m
English
Content preview from Practical Optics
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66 2 ♦ Theory of Imaging
2.17. A microscope objective of magnification ×10 has a focal length of 16 mm
and is operated with an aperture stop of 5 mm diameter. At which angle of oblique
illumination should one expect the resolution to be twice that of normal (on-axis)
illumination? Which resolution (in the visible) will be available in this case and
how will the resolution be changed if the illumination angle is held at 5
◦
?
2.3. Image Evaluation
Evaluation of images is carried out (i) at the design stage when it is checked
whether the configuration designed is capable of delivering the system perfor-
mance requirements; and (ii) at the end of manufacturing when a real system with
all the tolerances of component fabrication and assembling is aligned and ...
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