Lens barrel and optical apparatus

Details Lens barrel and optical apparatus Lens barrel and optical apparatus

2008-09-09

2008-09-09

Ben, Loha (Department: 2873)

Optical: systems and elements

Lens

With support

C359S822000, C359S823000, C359S826000, C359S701000, C396S072000, C396S079000, C396S349000

Reexamination Certificate

active

11715913

ABSTRACT:
The present invention is directed to a lens barrel that is simplified in structure with the reduced number of components and is facilitated in assembly and associated adjustment. The lens barrel enables an appropriate frictional force against the rotation force caused by manipulating rotary operation rings such as a zooming ring and a focusing ring to effect the optimum operating force on the rotary operation rings. In the lens barrel where a fixed barrel has its inner and outer circumferential surfaces provided with at least two slidable-rotatable members that are rotatably held about the optical axis but unable to move along the optical axis, an annular member is secured to the fixed barrel between the slidable-rotatable members, the annular member being pivotal about the optical axis and being provided with resilient protrusions on the opposite major surfaces toward the subject and the image field; and the resilient protrusions are pressed against a rear end face of one of the slidable-rotatable members closer to the subject and against a fore end face of the other slidable-rotatable member closer to the image field.

REFERENCES:
patent: 2908209 (1959-10-01), Marvin et al.
patent: 3484159 (1969-12-01), O'Donnell et al.
patent: 4303306 (1981-12-01), Ookawa
patent: 6751032 (2004-06-01), Nomura et al.
patent: 6909464 (2005-06-01), Nomura et al.
patent: 7259923 (2007-08-01), Nuno et al.
patent: 2000-180689 (2000-06-01), None
patent: 2001-305409 (2001-10-01), None

Affiliated with

Also associated with

Rating

Lens barrel and optical apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lens barrel and optical apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lens barrel and optical apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3956811