Lens barrel and optical apparatus

Details Lens barrel and optical apparatus Lens barrel and optical apparatus

2007-12-20

2009-06-23

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S703000, C359S819000

Reexamination Certificate

active

07551369

ABSTRACT:
A lens barrel includes: first and second movable lens units; first and second drive sources for moving the first and second movable lens units in a direction parallel to an optical axis, respectively; guide members for each retaining the first and second movable lens units and for guiding movements of the first and second movable lens units; and a reference position detector for detecting reference positions for the first and second movable lens units, in which: the reference position detector has light emitting receiving elements; the first and second movable lens units have sleeves each engaged with the guide members and have light blocking portions for detecting the reference positions by the light emitting and receiving elements of the reference position detector; and the first and second lens units can move in the optical axis direction, with their respective light blocking portions passing each other without any interference.

REFERENCES:
patent: 2008/0158692 (2008-07-01), Tomita et al.

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-4144648