Konica Minolta Opto, Inc.

Takashi Kawasaki

Yasunari Fukuta

Masae Sato

Kazuki Matsui

Eigo Sano

Yuichi Ozaki

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 includes, in order from an object side thereof: a first lens in a meniscus shape having a positive refractive power and including a convex surface facing the object side; a second lens having a negative refractive power and including a concave surface facing an image side of the image pickup lens; a third lens in a meniscus shape having a positive refractive power and including a convex surface facing the image side; and a fourth lens having a negative refractive power and including a concave surface facing the image side, where at least one surface of the fourth lens is in an aspheric shape. The image pickup lens satisfies a predetermined condition relating to a composite focal length of the first lens and the second lens, and a focal length of a total system of the image pickup lens.

Image pickup lens, image pickup unit, and mobile terminal

An image pickup lens includes: an aperture stop; a first lens having a positive power and including a convex surface facing an object side; a second lens having a negative power and including a concave surface facing an image side; a third lens in a meniscus shape having a positive power and including a convex surface facing the image side; and a fourth lens in a meniscus shape having a negative power and including a convex surface facing the object side. The image pickup lens satisfies predetermined conditions relating to a composite focal length of the first through third lenses, a length of an air space between the third lens and the fourth lens along the optical axis, and a curvature radius of a surface of the second lens facing the image side.

Image pickup lens, image pickup unit and mobile terminal

An image pickup lens includes: a first lens block with a positive power and a second lens block. The first lens block includes a first lens substrate, a lens portionwith a positive power, formed on an object-side surface of the first lens substrate, and a lens portionwith a negative power, formed on an image-side surface of the first lens substrate. The object-side surface of the lens portionis a convex surface, and an image-side surface of the lens portionis a concave surface. The second lens block includes a second lens substrate, and a lens portionwith a negative power, formed on an object-side surface of the second lens substrate. The object-side surface of the lens portionis a concave surface. The image pickup lens satisfies the predetermined conditional expressions.

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

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 present invention provides an image pickup lens for forming an image of an object on a photoelectrical converter of a solid-state image pickup element. The image pickup lens includes: an aperture stop; a first lens having a positive refractive power and having a meniscus shape whose surface facing the object side is convex; a second lens having a negative refractive power whose surface facing an image side of the image pickup lens is concave; and a third lens having a positive refractive power and having a meniscus shape whose surface facing the object side is convex. Each of the first lens, the second lens, and the third lens includes an aspheric optical surface. The image pickup lens satisfies predetermined conditions according to a focal length of the first lens, and a refractive power of an air lens formed from surfaces of the second lens and the third lens.

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Hachioji, Japan

Takashi Kawasaki