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US 2001/0055164 A1Published application
Image pickup lens unit
AssigneeMilestone Co., Ltd.
InventorsSatoshi Dou, Toshiyuki Yoshida
Life of this patent
Estimating the term…
Abstract
An image pickup lens unit includes, as viewed from an object side, a retainer having an aperture stop, an image pickup lens, and a holder. The retainer having an aperture stop and the image pickup lens are united with each other. The holder assumes a substantially cylindrical shape and accommodates the image pickup lens such that the image pickup lens is united with the holder in a manner movable in relation to the holder, whereby movement of the retainer having an aperture stop causes the image pickup lens to move in relation to the holder to thereby carry out focus adjustment.
Claims31
An image pickup lens unit comprising, as viewed from an object side:
- a retainer having an aperture stop;
- an image pickup lens;
- and
- a holder, wherein
- said retainer having an aperture stop and said image pickup lens are united with each other;
- and
- said holder assumes a substantially cylindrical shape and accommodates said image pickup lens such that said image pickup lens is united with said holder in a manner movable in relation to said holder, whereby movement of said retainer having an aperture stop causes said image pickup lens to move in relation to said holder so as to carry out focus adjustment.
4 more elements
An image pickup lens unit comprising, as viewed from an object side:
- a retainer having an aperture stop and assuming a circular cross section;
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- said retainer having an aperture stop and said image pickup lens are united with each other;
- at least one protrusion is formed on a circumferential portion of said image pickup lens;
- said holder assumes a substantially cylindrical shape and has an elongated groove formed on an inner cylindrical wall of said holder in such a manner that the groove extends in the circumferential direction and inclines in the axial direction;
- and
- said holder accommodates said image pickup lens such that the protrusion is fitted into the elongated groove to thereby unite said image pickup lens with said holder in a manner movable along the elongated groove in relation to said holder, whereby rotation of said retainer having an aperture causes said image pickup lens to move along the elongated groove in relation to said holder, thereby moving said image pickup lens axially so as to carry out focus adjustment.
6 more elements
An image pickup lens unit comprising, as viewed from an object side:
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- a surface of said image pickup lens which faces an object, a surface of said image pickup lens which faces an image plane, or both of the surfaces are subjected to printing at a peripheral portion(s) of said image pickup lens so as to form an aperture stop;
- at least one protrusion is formed on a circumferential portion of said image pickup lens;
- said holder assumes a substantially cylindrical shape and has an elongated groove formed on an inner cylindrical wall of said holder in such a manner that the groove extends in the circumferential direction and inclines in the axial direction;
- and
- said holder accommodates said image pickup lens such that the protrusion is fitted into the elongated groove to thereby unite said image pickup lens with said holder in a manner movable along the elongated groove in relation to said holder, whereby rotation of said image pickup lens causes said image pickup lens to move along the elongated groove in relation to said holder, thereby moving said image pickup lens axially so as to carry out focus adjustment.
5 more elements
An image pickup lens unit comprising, as viewed from an object side:
- a retainer having an aperture stop and assuming a circular cross section;
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- said retainer having an aperture stop and said image pickup lens are united with each other;
- at least one protrusion is formed on a circumferential portion of said retainer having an aperture stop;
- said holder assumes a substantially cylindrical shape and has an elongated groove formed on an inner cylindrical wall of said holder in such a manner that the groove extends in the circumferential direction and inclines in the axial direction;
- and
- said holder accommodates said image pickup lens such that the protrusion is fitted into the elongated groove to thereby unite said retainer having an aperture stop with said holder in a manner movable along the elongated groove in relation to said holder, whereby rotation of said retainer having an aperture causes said image pickup lens to move along the elongated groove in relation to said holder, thereby moving said image pickup lens axially so as to carry out focus adjustment.
6 more elements
An image pickup lens unit comprising, as viewed from an object side:
- a retainer having an aperture stop and assuming a circular cross section;
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- said retainer having an aperture stop and said image pickup lens are united with each other;
- at least two toothlets are formed on a peripheral portion of a surface of said image pickup lens which faces an image plane, such that upper faces of said toothlets have sloped surfaces formed along a circumference of said image pickup lens;
- said holder assumes a substantially cylindrical shape and has at least two protrusions formed on an inner cylindrical wall of said holder so as to hold said image pickup lens through contact between the protrusions and the upper faces of the toothlets;
- and
- said holder accommodates said image pickup lens such that said image pickup lens can move in relation to said holder while contact between the protrusions and the sloped surfaces of the upper faces of the toothlets is maintained, whereby rotation of said retainer having an aperture causes said image pickup lens to move while maintaining contact of the sloped surfaces with the protrusions, thereby moving said image pickup lens axially so as to carry out focus adjustment.
6 more elements
An image pickup lens unit comprising, as viewed from an object side:
- a retainer having an aperture stop and assuming a circular cross section;
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- said retainer having an aperture stop and said image pickup lens are united with each other;
- said holder assumes a substantially cylindrical shape in order to accommodate said image pickup lens and has at least one protrusion formed on an inner cylindrical wall of said holder;
- said image pickup lens has an elongated groove formed on a circumferential portion of said image pickup lens in such a manner that the groove extends in the circumferential direction and inclines in the axial direction;
- and
- said image pickup lens is united with said holder in such a manner that the protrusion is fitted into the elongated groove to thereby enable said image pickup lens to move along the elongated groove in relation to said holder, whereby rotation of said retainer having an aperture causes said image pickup lens to move along the elongated groove in relation to said holder, thereby moving said image pickup lens axially so as to carry out focus adjustment.
6 more elements
An image pickup lens unit comprising, as viewed from an object side:
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- a surface of said image pickup lens which faces an object, a surface of said image pickup lens which faces an image plane, or both of the surfaces are subjected to printing at a peripheral portion(s) of said image pickup lens so as to form an aperture stop;
- said holder assumes a substantially cylindrical shape in order to accommodate said image pickup lens and has at least one protrusion formed on an inner cylindrical wall of said holder;
- said image pickup lens has an elongated groove formed on a circumferential portion of said image pickup lens in such a manner that the groove extends in the circumferential direction and inclines in the axial direction;
- and
- said image pickup lens is united with said holder in such a manner that the protrusion is fitted into the elongated groove to thereby enable said image pickup lens to move along the elongated groove in relation to said holder, whereby rotation of said image pickup lens causes said image pickup lens to move along the elongated groove in relation to said holder, thereby moving said image pickup lens axially so as to carry out focus adjustment.
5 more elements
An image pickup lens unit comprising, as viewed from an object side:
- a retainer having an aperture stop and assuming a circular cross section;
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- said retainer having an aperture stop and said image pickup lens are united with each other;
- said holder assumes a substantially cylindrical shape in order to accommodate said image pickup lens and has at least one protrusion formed on an inner cylindrical wall of said holder;
- said retainer has an elongated groove formed on a circumferential portion of said retainer in such a manner that the groove extends in the circumferential direction and inclines in the axial direction;
- and
- said retainer is united with said holder in such a manner that the protrusion is fitted into the elongated groove to thereby enable said retainer to move along the elongated groove in relation to said holder, whereby rotation of said retainer having an aperture causes said image pickup lens to move along the elongated groove in relation to said holder, thereby moving said image pickup lens axially so as to carry out focus adjustment.
6 more elements
An image pickup lens unit comprising, as viewed from an object side:
- a retainer having an aperture stop and assuming a circular cross section;
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- said retainer having an aperture stop and said image pickup lens are united with each other;
- said holder assumes a substantially cylindrical shape in order to accommodate said image pickup lens;
- said image pickup lens is united with said holder such that said image pickup lens is movable in relation to said holder;
- an outer circumferential portion of an image-plane-side end portion of said holder is in screw engagement with an inner wall surface of an outer sleeve connected to a main body to which said image pickup lens unit is attached and having a diameter greater than that of said holder, whereby
- focus adjustment is performed through at least one of operation of rotating said retainer having an aperture to thereby move said image pickup lens relative to said holder and operation of rotating said holder relative to said outer sleeve.
6 more elements
An image pickup lens unit comprising, as viewed from an object side:
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- a surface of said image pickup lens which faces an object, a surface of said image pickup lens which faces an image plane, or both of the surfaces are subjected to printing at a peripheral portion(s) of said image pickup lens so as to form an aperture stop;
- said holder assumes a substantially cylindrical shape in order to accommodate said image pickup lens;
- said image pickup lens is united with said holder such that said image pickup lens is movable in relation to said holder;
- an outer circumferential portion of an image-plane-side end portion of said holder is in screw engagement with an inner wall surface of an outer sleeve connected to a main body to which said image pickup lens unit is attached and having a diameter greater than that of said holder, whereby
- focus adjustment is performed through at least one of operation of rotating said image pickup lens to thereby move said image pickup lens relative to said holder and operation of rotating said holder relative to said outer sleeve.
5 more elements
An image pickup lens unit comprising, as viewed from an object side:
- an image pickup lens assuming a circular cross section;
- and
- a holder assuming a circular cross section, wherein
- said holder assumes a substantially cylindrical shape and is formed integrally with said image pickup lens in a state in which said image pickup lens is accommodated within said holder;
- an outer circumferential portion of an image-plane-side end portion of said holder is in screw engagement with an inner wall surface of an outer sleeve connected to a main body to which said image pickup lens unit is attached and having a diameter greater than that of said holder, whereby
- focus adjustment is performed through operation of rotating said holder relative to said outer sleeve.
3 more elements
Dependencies are inferred from the claim text.