Optical apparatus with improved lens mounting device
AssigneeMinolta Camera Kabushiki Kaisha
InventorsSatoru Ono, Jun Kohsaka
Life of this patent
Estimating the term…
Abstract
An optical apparatus includes a laser beam emitter for outputting a laser beam modulated in accordance with image information, and a lens unit resting on a lens mount. The lens unit includes, all formed integral with one another, an effective lens portion, a cylindrical portion surrounding a side surface of the effective lens portion, and projections extending from peripheral positions of the cylindrical portion. The lens mount includes a holder for holding the cylindrical portion of the lens unit to be rotatable and axially slidable on an optical axis of the laser beam, and a groove formed in the bottom of the holder for receiving the projection.
Claims21
An optical apparatus comprising:
- laser beam emitting means for outputting a laser beam modulated in accordance with image information;
- a lens unit including, all formed integral with one another, an effective lens portion, a cylindrical portion surrounding a side surface of said effective lens portion, and projecting means extending from peripheral positions of said cylindrical portion, said effective lens portion having a curved surface with asymmetry of rotation for refracting said laser beam with different powers in at least two directions;
- and
- supporting means including a holder for holding said cylindrical portion of said lens unit to be rotatable and axially slidable on an optical axis of said laser beam, and a groove parallel to the optical axis for receiving said projecting means.
An optical apparatus comprising:
- laser beam emitting means for outputting a laser beam modulated in accordance with image information;
- a lens unit including, all formed integral with one another, an effective lens portion, a cylindrical portion surrounding a side surface of said effective lens portion, and projecting means extending from peripheral positions of said cylindrical portion;
- and
- supporting means including a holder for molding said cylindrical portion of said lens unit to be rotatable and axially slidable on an optical axis of said laser beam, a groove parallel to the optical axis for receiving said projecting means, and presser means for pressing said lens unit to the holder.
An optical apparatus comprising:
- laser beam emitting means for outputting a laser beam modulated in accordance with image information;
- a lens unit including an effective lens portion, and a cylindrical portion formed integral with and surrounding a side surface of said effective lens portion, said cylindrical portion defining groove means in a peripheral surface thereof, said effective lens portion having a curved surface with asymmetry of rotation for refracting said laser beam with different powers in at least two directions;
- and supporting means including a holder for holding said cylindrical portion of said lens unit to be rotatable and axially slidable on an optical axis of said laser beam, and a projection for extending into said groove means.
An optical system comprising:
- a lens unit including, all formed integral with one another, an effective lens portion , a cylindrical portion surrounding a side surface of said effective lens portion, and projecting means extending from peripheral positions of said cylindrical portion, said effective lens portion having a curved surface with asymmetry of rotation;
- and
- supporting means including a holder for holding said cylindrical portion of said lens unit to be rotatable and axially slidably on an optical axis of said effective lens portion, and a groove along the optical axis for receiving said projecting means.
A combination optical lens unit and support assembly comprising:
- a lens element;
- a mounting member surrounding the lens element and having a first projection and a second projection extending radially outward from the mounting member at positions approximately 180 degrees apart, the lens element, mounting member, and first and second projections being integrally molded as a lens mounting unit;
- and
- supporting means for operatively mounting the mounting member, including an elongated groove of a size to accommodate, respectively, the first and second projections, depending on the alignment of the lens mounting unit, the elongated grooves enabling a movement of the lens mounting unit along the elongated groove, and means for holding the lens mounting unit in the elongated groove.
Dependencies are inferred from the claim text.