Position controller for optical element

摘要

A position controller for an optical element includes an advancing/retracting member, an anti-shake moving member, an insertable/removable moving member holding the optical element and supported by the anti-shake moving member to move between insertion and removed positions, an insertion holder holding the insertable/removable moving member in the insertion position in the ready-to-photograph state, a removal drive member supported by the advancing/retracting member between a position allowing the anti-shake moving member to move in a moving range and a forced removing position to move the insertable/removable moving member to the removed position, and an insertion/removal controller which holds the removal drive member in the insertion allowance position in the ready-to-photograph state and moves the removal drive member to the forced removing position in the accommodated state.

主权项

1. A position controller for an optical element provided in a photographing optical system which moves between a ready-to-photograph state and an accommodated state in which no pictures are taken, comprising:
an advancing/retracting member movable in an optical axis direction of said photographing optical system, wherein said advancing/retracting member is moved between a first position at which said photographing optical system is in said ready-to-photograph state and a second position at which said photographing optical system is in said accommodated state; an anti-shake moving member supported by said advancing/retracting member to be movable along a first plane orthogonal to said optical axis; an insertable/removable moving member which holds said optical element and is rotatably supported by said anti-shake moving member to be movable between an insertion position in which said optical element is positioned on said optical axis and a removed position in which said optical element is removed from said optical axis; an insertion holder which holds said insertable/removable moving member in said insertion position when said photographing optical system is in said ready-to-photograph state; a removal drive member which is supported by said advancing/retracting member to be movable along a second plane orthogonal to said optical axis, relative to said advancing/retracting member, between an insertion allowance position in which said removal drive member is in noncontact with said insertable/removable moving member in said insertion position, to thereby allow said anti-shake moving member to move in a moving range thereof, and a forced removing position in which said removal drive member comes in contact with and presses said insertable/removable moving member to move said insertable/removable moving member from said insertion position to said removed position, said removal drive member being separate and distinct from said insertable/removable moving member, and wherein said removal drive member is movable independently of said insertable/removable moving member; and an insertion/removal controller which holds said removal drive member in said insertion allowance position when said photographing optical system is in said ready-to-photograph state, and moves said removal drive member from said insertion allowance position to said forced removing position when said advancing/retracting member moves from said first position to said second position.