“Image Rotation Devices—A Comparative Survey”, 1972-08-01 ():
Optical systems which, when rotated, produce a rotation of an image about the optical axis have been known and used for a long time.
Information on such systems is sparse, however, and widely scattered.
This paper discusses image rotation devices in general terms, and then attempts to collect together the more commonly used devices and to present comparative information on them, in order to provide a convenient reference source for optical designers.
In addition a number of lesser-known and novel arrangements are described.