Optical apparatus

Details Optical apparatus Optical apparatus

2007-05-08

2007-05-08

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S696000

Reexamination Certificate

active

11403321

ABSTRACT:
An optical apparatus is disclosed which can suppress an increase in size thereof even if its lens is driven in a large movable range. The apparatus comprises a first linear actuator which includes a first member to which an electrical signal is input and a second member whose length in an optical axis direction is longer than the first member, and drives a first lens in a first movable range in the optical axis direction. The apparatus comprises a second linear actuator which includes a third member to which an electrical signal is input and a fourth member whose length in the optical axis direction is longer than the third member, and drives a second lens in a second movable range in the optical axis direction. The first member is moved together with the first lens in the optical axis direction, with respect to the second member.

REFERENCES:
patent: 5600496 (1997-02-01), Mori
patent: 6618211 (2003-09-01), Yumiki et al.
patent: 64-90584 (1989-04-01), None
patent: 8-179184 (1996-07-01), None

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