Orthogonal movement lateral shift zoom lens

Details Orthogonal movement lateral shift zoom lens Orthogonal movement lateral shift zoom lens

2005-02-01

2005-02-01

Robinson, Mark A. (Department: 2872)

Optical: systems and elements

Lens

With variable magnification

C359S432000

Reexamination Certificate

active

06850372

ABSTRACT:
An optical zoom lens mechanism is arranged along an optical axis and produces a zooming effect by a transverse movement of transparent elements perpendicular to the optical axis. A first lens group has two adjacent, rotationally nonsymmetric transparent first optical lens plates that are each rotationally nonsymmetric relative to the optical axis, and a first-group drive is operable to move the first optical lens plates together and relative to each other in a first-movement radial direction relative to the optical axis. A second lens group has two adjacent, rotationally nonsymmetric transparent second optical lens plates that are each rotationally nonsymmetric relative to the optical axis, and a second-group drive is operable to move the second optical lens plates together and relative to each other in a second-movement radial direction relative to the optical axis. The second-movement radial direction is angularly rotated from the first-movement radial direction by a nonzero, preferably about 90 degrees, rotational angle about the optical axis. The first optical lens plates and the second optical lens plates are shaped so that the relative movement of the first optical lens plates and second optical lens plates produces an optical zoom relative to a focal surface. The drives may be driven by a controller, such as a feedback controller having an imaging sensor located at the focal surface, and a microprocessor controller receiving an output of the imaging sensor and having a control output signal set operably connected to the drives.

REFERENCES:
patent: 4925281 (1990-05-01), Baker
patent: 6172740 (2001-01-01), Suzuki
patent: 6278558 (2001-08-01), Chang
patent: 20030053034 (2003-03-01), Yaniv
60323435.

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