Abstract: An optically stabilized camera lens system includes an objective lens mounted to the lens case and an optical train defining an optical path between the objective lens and a camera image plane. The optical train includes first a Humphrey prism, second a light reversing, cube corner element, third a zoom lens. Provision is made for replacement of the cube corner with a prism and use of a parity inverting prism such as a Dove or preferably a Pechan to provide an alternate path. Roll stabilization is provided by coupling the Pechan, Dove or equivalent parity reversing prism to a gyroscope so the prism becomes a derotating prism. The derotating prism rotates about the optical path at half the speed the case rotates about the optical axis to produce roll stabilization preferred in camera and video applications. The Humphrey prism is inertially mounted to the case, using a stabilizer to compensate for small accidental tilt and pan motions of the case.

Abstract: A stabilized binocular using a gimbaled and stabilized triple-reflecting compensator (such as that in Humphrey U.S. Pat. No. 3,475,073) having three reflecting surfaces for each binocular path is disclosed. Each of the binocular paths is in convergent light from an objective to and through gimbaled stabilizer assembly to a primary focus that is stabilized with respect to the case. The triple-reflecting surfaces disposed to reflect light in the manner corresponding to a single plane mirror at an effective mirroring plane with a displacement between the incident and reflected light beams. The compensator remains stabilized with respect to inertial space, while the instrument undergoes accidental angular motion. The reflecting property of the compensator brings the image back to the same place on the case despite the accidental angular motion. The displacing function of the compensator enables the image to be displaced to a location where the image does not interfere with the incoming light path.

Abstract: A stabilized binocular using a gimbaled and stabilized triple-reflecting compensator (such as that in Humphrey U.S. Pat. No. 3,475,073) having three reflecting surfaces for each binocular path is disclosed. Each of the binocular paths is in convergent light from an objective to and through gimbaled stabilizer assembly to a primary focus that is stabilized with respect to the case. The triple-reflecting surfaces disposed to reflect light inthe manner corresponding to a single plane mirror at an effective mirroring plane with a displacement between the incident and reflected light beams. The compensator remains stabilized with respect to inertial space, while the instrument undergoes accidental angular motion. The reflecting property of the compensator brings the image back to the same place on the case despite the accidental angular motion. The displacing function of the compensator enables the image to be displaced to a location where the image does not interfere with the incoming light path.