Konica Minolta Opto, Inc.

Konica Minolta Advanced Layers, Inc.

Konica Minolta, Inc.

Sony Semiconductor Solutions Corporation

Eigo Sano

Yuichi Ozaki

Keiji Matsusaka

Hiroaki Tanaka

Masae Sato

Susumu Yamaguchi

Nobuyoshi Mori

Keiko Yamada

Takashi Kawasaki

Atsushi Yamashita

Takumi Matsui

Maiko Nishida

Taizo Wakimura

Yuichi Atarashi

Kazuichiro Itonaga

Yuichi Takenaga

Masashi Isono

Yasunari Fukuta

Shoji Kogo

Satoshi Onishi

Kazuki Matsui

Hirotoshi Konishi

Makoto Tsunoda

Atsushi Morimura

Mitsuhiko Morita

Takayoshi Hasegawa

Joji Wada

To obtain an imaging unit, a lens barrel, and a portable terminal which can effectively suppress spring-back of solid-state imaging elements, while facilitating height lowering thereof. An imaging unit includes: a solid-state imaging element; and an imaging lens for forming a subject image on a photoelectric conversion part of the solid-state imaging element. An imaging surface of the solid-state imaging element is curved in a manner that a peripheral side is inclined toward an object side relative to a screen center. The imaging lens constrains the solid-state imaging element to prevent a radius of curvature of the imaging surface from varying. Thus, field curvature, distortion aberration, and comatic aberration are appropriately corrected.

Imaging unit, lens barrel, and portable terminal

The present invention provides a compact and high-performance image pickup lens having a fast F-number and capable of suppressing shading by using a curved projection surface. An image pickup lensincludes a first lens Lhaving a positive refractive power, a second lens Lhaving a negative refractive power, a third lens Lhaving a positive or negative refractive power, a fourth lens Lhaving a positive or negative refractive power, and a fifth lens Lhaving a negative refractive power. With regard to the fifth lens Lamong these lenses, at least one surface is aspherical. The above-described image pickup lenssatisfies a conditional expression (1): &#x2212;2.50&#x3c;f/f&#x3c;&#x2212;0.10 . . . (1) where fis a focal length of the fifth lens Land f is a focal length of the entire system of the image pickup lens

Image pickup lens and image pickup device

Provided is an image pickup lens that despite being small is favorably corrected for aberrations and has a five element configuration that is wide angle and has a bright F-number also provided is an image pickup device and a portable terminal using the image pickup lens. The image surface side of the fifth lens has an aspherical shape, has an inflection point at a position other than a position that intersects with the light axis, and satisfies the following formulae: &#x2212;5.0&#x3c;(r1+r2)/(r1&#x2212;r2)&#x2266;&#x2212;1.0 (1); 0.90&#x3c;f1/f&#x3c;1.70 (2); 0.35&#x3c;&#x3a3;DL13/f&#x3c;0.55 (3). Provided that r1: curvature radius of the first lens object side surface, r2: curvature radius of the first lens image side surface, f1: focal distance of the first lens, f: focal distance of the entire image pickup lens system, &#x3a3;DL13: distance on the optical axis from object side surface of the first lens to image side surface of the third lens.

Image pick-up lens, image pick-up device, portable terminal and digital instrument

An imaging lens system has, from an object side, at least one positive lens element convex to the object side, a negative lens element, and at least one lens element having an aspherical surface. The positive and negative lens elements are arranged next to each other. The formulae 0.1&#x3c;Ton/Dopn&#x3c;7, 0.1&#x3c;(Rona&#x2212;Ronb)/(Rona+Ronb)&#x3c;1.5, and 0.3&#x3c;Y'/TL&#x3c;0.9 are fulfilled, where Ton represents the axial thickness of the most object-side negative lens element, Dopn represents the axial distance between the most object-side negative lens element and the positive lens element located to the object side of and next to that negative lens element, Rona represents the paraxial radius of curvature of the object-side surface of the most object-side negative lens element, Ronb represents the paraxial radius of curvature of the image-side surface of the most object-side negative lens element, Y&#x2032; represents the maximum image height, and TL represents the axial distance from the vertex of the most object-side lens surface to the image surface (in a case where a parallel-plane plate is included, the air equivalent length).

Imaging lens, imaging optical device, and digital equipment

A single-focal-length imaging lens system achieves focusing by, while keeping first and third lens groups stationary relative to the image plane, moving a second lens group along the optical axis. The second lens group includes a positive lens element. The third lens group includes an aspherically shaped lens element having an inflection point at a position other than the intersection with the optical axis. The first and second air lenses formed by the intervals between the first and second and between the second and third lens groups have negative and positive refractive powers respectively. The conditional formula 0&#x2266;|Fi1/Fi2|&#x2212;|Fm1/Fm2|&#x2266;10 is fulfilled (Fi1 and Fi2 representing the focal lengths of the first and second air lenses, respectively, when focusing on the infinite object distance; Fm1 and Fm2 representing the focal lengths of the first and second air lenses, respectively, when focusing on the closest object distance).

Imaging lens system, imaging optical device, and digital appliance

To provide an image pickup lens with a five-lens configuration in which aberrations are corrected favorably despite its compactness. An image pickup lensincludes a first lens Lhaving a positive refractive power and having a convex face directed to an object side, a second lens Lof a meniscus shape having a negative refractive power and having a concave face directed to an image side, a third lens Lhaving a positive refractive power, a fourth lens Lhaving a positive refractive power and having a convex face directed to the image side, and a fifth lens Lhaving a negative refractive power and having a concave face directed to the image side, in this order from the object side. Here, the focal length of the fifth lens, the focal length of the entire system of the image pickup lens, and an air separation on an optical axis between the fourth lens and the fifth lens satisfy predetermined conditions.

Image pickup lens

Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.

Imaging lens, imaging device and portable terminal

An image-capturing lens includes, in order from an object side: a meniscus-shaped first lens which has positive power near an optical axis; a second lens which has positive power near the optical axis and has negative power in the periphery of the second lens; and a meniscus-shaped third lens. The image-capturing lens satisfies the following conditional formulas: TL/f&#x3c;1.10, 2.00&#x3c;(r2+r1)/(r2&#x2212;r1)&#x3c;4.00, and 0.07&#x3c;D2/f&#x3c;0.19, where TL: the air-converted distance from the object-side surface of the first lens to the image-side surface thereof, f: the focal length of the entire system, r2: the radius of curvature of the first lens on the image side thereof, r1: the radius of curvature of the first lens on the object side thereof, D2: the distance between the first lens and the second lens.

Image-capturing lens

There is provided an image pickup lens having a 6-element structure which has a small size and a sufficiently lens speed of F/2 or less and in which various aberrations are corrected favorably. This image pickup lens includes a first lens having a positive refractive power and comprising a convex surface directed to the object side; a second lens having a negative refractive power and comprising a concave surface directed to the image side; a third lens having a positive or negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a positive refractive power and comprising a convex surface directed to the image side; and a sixth lens having a negative refractive power and comprising a concave surface directed to the image side, in this order from the object side, wherein the image side surface of the sixth lens has an aspherical shape and an inflection point at a position other than an intersection point with the optical axis, and the image pickup lens satisfies the following conditional expressions.&#x3bd;d1&#x3e;50&#x3bd;d2&#x2266;30where,

Provided is an imaging lens, and also provided are an image pickup apparatus and a portable terminal both equipped with the imaging lens. The imaging lens includes in order: a positive first lens having a convex object-side surface; a negative second lens having a concave image-side surface; a negative meniscus-shaped third lens having a convex object-side surface; a positive fourth lens having a convex image-side surface; and a negative fifth lens having a concave image-side surface. The image-side surface of the fifth lens is aspherical and has an inflection point at a position of the optical axis. The third and the fourth lenses are integrally moved to focus, and the following conditional relation is satisfied: 0.75&#x3c;f34/f&#x3c;1.30, where f34 is the combined focal length of the third lens and the fourth lens, and f is the focal length of the entire system of the imaging lens.

Imaging lens, image pickup apparatus, and portable terminal

An image pickup lens includes: a first lens with a positive power, including a convex surface facing the object side; an aperture stop; a second lens with a negative power, including a concave surface facing the image side; a third lens with a positive or negative power; a fourth lens with a positive power, including a convex surface facing the image side; and a fifth lens with a negative power, including a concave surface facing the image side. The surface of the fifth lens facing the image side is an aspheric surface and includes an inflection point. The image pickup lens satisfies the predetermined condition relating to a focal length of the first lens.

Image pickup lens, image pickup apparatus, and mobile terminal

Provided is an image pickup lens that forms an image on an image pickup element with light from a subject. In the image pickup lens, a lens that is disposed on an image pickup element side is fixed in position, and a focusing lens group having a plurality of lenses including a lens closest to the subject is moved in an optical axis direction, thereby performing focusing.

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

Provided is a single-focus optical system which is configured, in order from the object side to the image side, of a first to third lens groups and in which the first lens group and the third lens group are fixed with respect to a predetermined imaging surface, and the second lens group is moved in the optical axis direction to focus, wherein the first lens group comprises at least one positive lens and at least one negative lens, the second lens group comprises at least one positive lens, the third lens group comprises at least one lens having at least one aspheric surface and having a positive optical power at a peripheral portion thereof and 5&#x3c;|&#x394;v1|&#x3c;70 is satisfied where &#x394;v1 is a maximum value of the Abbe number difference between the positive lens and the negative lens in the first lens group.

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Hino, Japan

Eigo Sano