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US 5,625,482 AGranted
Scanning optical apparatus
AssigneeCanon Kabushiki Kaisha
InventorYoshinori Sugiura
Life of this patent
Estimating the term…
Abstract
A laser scanning apparatus includes a deflecting member such as a polygonal mirror for deflecting a laser beam, a lens holder for integrally holding a plurality of lenses, the plurality of lenses for transmitting the deflected laser beam, and a housing for accommodating at least the deflecting member. The lens holder is detachably mountable to the housing, whereby proper lens-to-lens positioning may be ensured during assembly and when the lens holder is detached, such as for lens cleaning, and subsequently remounted.
Claims9
A laser canning apparatus comprising:
- deflecting means for deflecting a laser beam;
- a housing for accommodating at least said deflecting means;
- a plurality of lenses for transmitting the laser beam deflected by said deflecting means, said plurality of lenses being flat lenses having flat surfaces parallel with optical axes thereof;
- and
- a lens holder mountable to said housing for integrally holding said plurality of lenses, said lens holder having a plurality of positioning portions entirely above said optical axes of said plurality of lenses, said plurality of positioning portions for positioning the flat surfaces parallel with said optical axes of said plurality of lenses;
- wherein said lens holder is detachably mountable to said housing.
3 more elements
Dependencies are inferred from the claim text.