Lens barrel incorporating a rotatable optical element

Details Lens barrel incorporating a rotatable optical element Lens barrel incorporating a rotatable optical element

2008-06-17

2008-06-17

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Lens

With support

C359S821000, C359S822000, C359S811000

Reexamination Certificate

active

07388722

ABSTRACT:
A lens barrel includes an imaging optical system including a plurality of lens groups located on an optical axis; an insertable/rotatable optical element which produces a specific photographic effect when rotated on the optical axis; and a drive mechanism including a motor which moves the insertable/rotatable optical element between an inserted position, in which the insertable/rotatable optical element is positioned on the optical axis, and a removed position, in which the insertable/rotatable optical element is removed from the optical axis by forward and reverse rotations of the motor, respectively. The drive mechanism rotates the insertable/rotatable optical element on the optical axis by the forward rotation of the motor when the insertable/rotatable optical element is in the inserted position.

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