Multiple field of view changing apparatus for an optical system
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United States of America Patent
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-
Mar 10, 1998
Grant Date -
N/A
app pub date -
Nov 22, 1995
filing date -
Nov 26, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A three field of view change apparatus has a cubic carousel 1 mounted for rotation about a rotation axis 2 which is coincident with a diagonal of the carousel 1. The rotation axis 2 makes an angle of 54.736.degree. with a fixed optical axis 5 so that carousel 1 can be rotated to cause the fixed optical axis 5 to pass through the centres of any two opposed faces of the carousel 1. Optical components 14 are arranged on opposed faces of the carousel 1 and can be swung into alignment with the optical axis by rotating the carousel.
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