Abstract
Nested multilayer mirrors are commonly used in X ray telescope
structure to increase the collecting area. To balance the difficulty and
cost of producing these mirrors, Wolter-I structures are replaced with
conical Wolter-I structures, but these can lead to significantly poorer
angular resolutions. In this Letter, we consider changing one of the
mirror shapes (paraboloid or hyperboloid) of a Wolter-I structure to a
conical mirror shape, while the other mirror shape remains a quadric
surface-type structure, which can thus ensure the imaging quality. The
cone-hyperboloid structure is nested to obtain on-axis angular resolution
and off-axis images.
© 2016 Chinese Laser Press
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