Konica Minolta Opto, Inc.

Konica Corporation

Konica-minolta Holdings, Inc.

Masae Sato

Susumu Yamaguchi

Eigo Sano

Takashi Kawasaki

Yasunari Fukuta

Hiroshi Sato

Shoji Kogo

Kazuki Matsui

Yuuichi Atarashi

Kohei Ota

Nobuyoshi Mori

Takumi Matsui

Yusuke Suzuki

Minoru Yokota

An image pickup lens includes a first lens block with a positive refractive power, a second lens block with a negative refractive power, and an aperture stop. The first lens block includes a first lens substrate, and lens portionsandarranged on the first lens substrate. The lens portionsandare different from the first lens substrate in at least one of a refractive index and an Abbe number. The second lens block includes a second lens substrate, and lens portionsandarranged on the second lens substrate. The lens portionsandare different from the second lens substrate in at least one of a refractive index and an Abbe number. The image pickup lens satisfies predetermined conditions relating to a refractive index of the lens portion, and composite thicknesses of the first lens block and the second lens block.

Image pickup lens, image pickup apparatus, mobile terminal, and manufacturing method of image pickup lens

An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas.1.55&#x3c;n1&#x3c;1.80&#x2003;&#x2003;(1)0.4&#x3c;3/&#x3c;0.6&#x2003;&#x2003;(2)40.0&#x3c;&#x3bd;2&#x3c;90.0&#x2003;&#x2003;(3)

Image pickup lens, image pickup device, and mobile terminal device

An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas:1.55&#x3c;n1&#x3c;1.80&#x2003;&#x2003;(1)0.4&#x3c;3/&#x3c;0.6&#x2003;&#x2003;(2)40.0&#x3c;&#x3bd;2&#x3c;90.0&#x2003;&#x2003;(3).

An image pickup lens includes a first lens block with a positive power and a second lens block with a positive or negative power. The first lens block includes a first lens substrate, and lens portionsandarranged on opposing surfaces of the first lens substrate. The lens portionsandare different from the first lens substrate in at least one of a refractive index and an Abbe number. The second lens block includes a second lens substrate, and lens portionsandarranged on opposing surfaces of the second lens substrate. The lens portionsandare different from the second lens substrate in at least one of a refractive index and an Abbe number. The image pickup lens satisfies a condition relating to focal lengths of the lens portionsand

Image pickup lens, image pickup apparatus and mobile terminal

The image taking lens has the minimum effective diameter lens whose effective diameter is minimum, and the maximum effective diameter lens whose effective diameter is maximum on the most image side, and in the space generated in the minimum effective diameter lens periphery by the difference of the outer diameter of the minimum effective diameter lens and the outer diameter of the maximum effective diameter lens, at least a part of an actuator for driving focusing lens group moving at the time of focusing is arranged.

Image taking apparatus and assembling method thereof

In this invention, to provide a compact zoom lens having a small number of optical element groups to be driven and a simple moving mechanism, at least one of a plurality of optical element groups arranged in the lens system includes a refractive power variable element of a transmission type which has a compensation function to correct focus movement caused by zooming and a focus function to correct focus movement caused by a variation in inter-object distance. The refractive power variable element is a liquid optical element including a first liquid having a conductivity or a polarity and a second liquid which is not mixed with the first liquid, the first liquid and the second liquid being enclosed in a container fluid-tight so as to define an interface therebetween having a predetermined shape, the liquid optical element being arranged such that a refractive power thereof is adjusted by changing a curvature of the interface.

Zoom lens

A picture-taking lens for forming an image of an object image on a solid picture-taking element, comprising in order from the object side: a first lens having a positive refractive power and directing a convex surface toward the object side; an aperture stop, a second lens having a positive refractive power and a meniscus shape directing a convex surface toward the image side; and a third lens having a negative refractive power and directing a concave surface toward the image side, wherein the picture-taking lens satisfies the following conditional expression: 0.20&#x3c;R/f&#x3c;0.42, 0.10&#x3c;D/f&#x3c;0.40, where Ris a radius of curvature of the object side surface of the first lens, Dis an air gap on the axis between the first lens and the second lens, f is a focal length of a whole system of the picture-taking lens.

Picture-taking lens, image pick-up unit and hand-held device

An image pickup lens for forming a subject image on an photoelectric converter of a solid-sate image pickup element, includes: an aperture stop; a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; and a fourth lens having a negative refractive power. The aperture stop and the first to fourth lenses are arranged in this order from an object side of the image pickup lens, and the image pickup lens satisfies predefined condition.

Image pickup lens, image pickup apparatus, and mobile terminal provided with image pickup apparatus

An image-capturing lens includes a plastic lens formed with use of a material in which particles each having the maximum length of 30 nanometer or less are dispersed in a plastic material.

Image-capturing lens and image-capturing apparatus

Image-capturing lens and image- capturing apparatus

An image pickup lens that has therein, in the order named from an object side, an aperture stop, a meniscus-shaped first lens having positive refracting power whose convex surface faces an object and a second lens having positive or negative refracting power whose convex surface faces the object, wherein each of the first lens and the second lens has at least one aspheric surface and satisfies the following condition expression f/|f|&#x3c;1.0 wherein, fis a focal length of the first lens, fis a focal length of the second lens and f is a focal length of the entire system of the image pickup lens.

Image pickup lens, image pickup unit and cellphone terminal equipped therewith

A zoom lens to form an image of an object with variable magnification between a shortest focal length and a longest focal length, is provided with a first lens group having a positive refracting power; a second lens group positioned closer to the image than the first lens group and having a negative refracting power; and a third lens group positioned closer to the image than the second lens group and having a positive refracting power. When the magnification is changed from the shortest focal length to the longest focal length, the third lens group is shifted toward the object and the first lens group and the second lens group are shifted in such a manner that a distance between the first lens group and the second lens group is increased and a distance between the second group and the third group is decreased. The third lens group comprises at least a single positive lens and at least a single negative lens. A variable magnification ratio of the zoom lens is four times or more.

Miniature image-capturing lens, image-capturing unit and mobile terminal provided therewith

A zoom lens to form an image of an object with variable magnification, is provided with a first lens group having a positive refracting power, and a second lens group positioned closer to the image than the first lens group and having a negative refracting power. When the magnification is changed, a distance between the first lens group and the second lens group is changed. The first lens group comprises a 1-1 lens, a 1-2 lens and a 1-3 lens aligned in this order from the object. The zoom lens comprises at least two plastic lenses.

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Machida, Japan

Masae Sato