Patent ID: 7079332

Claim:
A lens tilt adjusting mechanism comprising: a lens frame to which at least one lens element is fixed; a lens frame holder which holds said lens frame; axially-opposed radial surfaces formed on said lens frame and said lens frame holder, respectively; a biasing device for biasing said lens frame and said lens frame holder in directions to make said axially-opposed radial surfaces contact each other; and a protrusion formed on one of said axially-opposed radial surfaces and a recess formed on the other of said axially-opposed radial surfaces; wherein said axially-opposed radial surfaces are in intimate contact with each other in a state where said protrusion and said recess are engaged with each other; and wherein said lens frame tilts relative to said lens frame holder in a state where said protrusion is disengaged from said recess so that said protrusion is in contact with said other of said axially-opposed radial surfaces.