Sony Corporation

Panasonic Intellectual Property Management Co., Ltd.

Tamron Company, Ltd.

Panasonic I-pro Sensing Solutions Co., Ltd.

Masafumi Sueyoshi

Daisuke Kuroda

Masaharu Hosoi

Satoshi Kuzuhara

Yoshio Matsumura

Makoto Kanai

Hisayuki Yamanaka

Hiroaki Okayama

Toshiya Mori

Ken'ichi Kasazumi

Katsuhiko Hayashi

Takuya Imaoka

Yoshito Iwasawa

Hiroyuki Matsumoto

Tsuneo Uchida

Tomoko Iiyama

Yusuke Nanjo

Shunichiro Yoshinaga

Yuichi Hatase

Masahito Ogata

Takahiro Kitada

Kazuya Watanabe

Yusuke Yonetani

Yusuke Nihei

Yuka Kudo

Jindong Li

A zoom lens system includes: a first lens group having positive power; a second lens group having negative power; a third lens group having positive power; a fourth lens group having negative power; and a fifth lens group having positive power. The first lens group is made up of a single lens. The second lens group is made up of four lenses. The zoom lens system is configured to zoom from a wide-angle end toward a telephoto end such that the fifth lens group does not move but the first to fourth lens groups move to change intervals between the lens groups.

Zoom lens system, image capture device, and camera system

In a display device, an irradiation unit includes an imaging optical system. The imaging optical system scans and irradiates a front surface of a screen with light to form an image. The light passing through the screen and output from the screen in a movement direction is incident on a projection unit as incident light. The projection unit irradiates a reflective member with the incident light to allow the reflective member to reflect the incident light to form a virtual image corresponding to the image in a target space. A locus of a focal position of the imaging optical system when the irradiation unit wholly scans the front surface of the screen is within a range between the front surface of the screen at a first position and the front surface of the screen at a second position.

Display device and moving body carrying display device

An oblique viewing endoscope has an aperture through which some rays out of rays reflected from an object in an oblique viewing direction pass, an imaging element that captures an image, based on image forming of the rays passing through the aperture, and a lens that is disposed between the aperture and the imaging element, and that has a lens surface on which the image is formed by causing some rays in at least a visual field center out of the rays passing through the aperture in the oblique viewing direction to be substantially vertically incident on a center of the imaging element.

Oblique viewing endoscope and imaging system

A head-up display projects an image on a windshield to allow a viewer to visually observe a virtual image. The head-up display includes a display device, a relay optical system, and a projection optical system. The display device displays an image. The relay optical system provides the image displayed by the display device as an intermediate image. The projection optical system reflects the intermediate image provided by the relay optical system to project the intermediate image on the windshield.

Head-up display and moving body equipped with head-up display

A lens system, an interchangeable lens apparatus, and a camera system each include a front group including a first focus lens group that moves with respect to an image surface in focusing from an infinity in-focus condition to a close-object in-focus condition; a rear group including a second focus lens group that moves with respect to the image surface in focusing, the front group and the rear group being located in order from an object side to an image side; a fixed lens group including at least one positive power lens element, the fixed lens group being located between the front group and the rear group and fixed with respect to the image surface in focusing; and an aperture diaphragm. The positive power lens in the fixed lens group satisfies dPgF&#x3e;0.015 (dPgF is an anomalous dispersibility in a g-line and an F-line of the lens element).

Lens system, interchangeable lens apparatus, and camera system

A zoom lens system having at least five lens units, each lens unit being composed of at least one lens element, the zoom lens system, in order from an object side to an image side, comprising: a positive first lens unit; and a negative second lens unit, and in order from the image side to the object side, comprising: a positive lens unit &#x3b3;; a negative lens unit &#x3b2;; and a positive lens unit &#x3b1;, wherein the first lens unit is composed of only optical elements having optical power, and in zooming from a wide-angle limit to a telephoto limit, at least the positive first lens unit is fixed with respect to an image surface, the positive lens unit &#x3b1; moves with respect to the image surface separately from an aperture diaphragm, and the negative lens unit &#x3b2; moves to the object side.

Zoom lens system, interchangeable lens apparatus and camera system

A zoom lens system, in order from an object side to an image side, includes a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power; a fourth lens unit having negative optical power, and a subsequent lens unit. The first lens unit includes a negative lens element and a positive lens element. In the zoom lens system, the conditions: 1.47&#x3c;nd&#x3c;1.57 and 60&#x3c;vd&#x3c;75 (nd: a refractive index to a d-line of the positive lens element, vd: an Abbe number to a d-line of the positive lens element) are satisfied.

An inner focus lens system comprising lens units each composed of at least one lens element, wherein a most object side lens unit is provided and is fixed with respect to an image surface in focusing, and the conditions: BF/Y&#x3c;1.7 and (L&#xd7;F)/f&#x3c;2.2 (BF: a distance from an image side surface apex of a most image side lens element to the image surface, Y=f &#xd7;tan &#x3c9;, L: an overall length of lens system, F: a F-number of lens system,f: a focal length of lens system, &#x3c9;: a half view angle of lens system) are simultaneously satisfied, or only the condition: (L&#xd7;F)/f&#x3c;2.0 (L: the overall length of lens system, F: the F-number of lens system,f: the focal length of lens system) is satisfied.

Inner focus lens system, interchangeable lens apparatus and camera system

The present invention is directed to provide an enhanced variable power zoom lens that has focusing lens optics reduced in weight so as to relieve of a load on a focusing drive system, and that has its anti-vibration lens optics reduced in both diameter and weight so as to relieve of a load on an anti-vibration drive system and downsize the same. The enhanced variable power zoom lens is adapted to have the foremost or first lens group Gof positive refractivity, the second lens group Gof negative refractivity, the third lens group Gof positive refractivity, the fourth lens group Gof negative refractivity, and the fifth lens group Gof positive or negative refractivity arranged in sequence from a position closer to the object where the fourth lens group Gserves as a focusing lens, and the third lens group Gand the fifth lens group Gtogether move on and along the same cam structure during zooming.

Enhanced variable power zoom lens

An enhanced variable power zoom lens is lightweight in whole and in part, especially, having its focusing lens optics reduced in weight so as to relieve of a load on a focusing drive system, and having its anti-vibration lens optics reduced in both diameter and weight so as to relieve of a load on an anti-vibration drive system and downsize the same. The zoom lens has the foremost or first lens group of positive refractivity, the second lens group of negative refractivity, the third lens group of positive refractivity, the fourth lens group of negative refractivity, and the fifth lens group arranged in sequence from a position closer to the object. The fourth lens group moves toward the image plane for focusing on from the infinity to a proximity object while part of the third lens group moves orthogonal to the optical axis for shifting an image.

A zoom lens including first, second, and third lens groups having positive, negative, and positive refractive powers, respectively, which are arranged in that order from the object side to the image side such that, when zooming from wide-angle to telephoto, the first lens group moves to the object side, and spacings between the lens groups change. The third lens group has at least two lenses including a first lens, which is a positive lens arranged closer to the object side than the other lenses of the third lens group. Blur correction is performed by moving the first lens perpendicularly to the optical axis. The third lens group is configured such that the following conditional expression is satisfied: 0.3&#x3c;(1&#x2212;&#x3b2;kFW)&#xb7;&#x3b2;kRW&#x3c;1.9, where &#x3b2;kFW and &#x3b2;kRW are the lateral magnifications at wide-angle of, respectively, the first lens and the remaining lenses of the third lens group.

Zoom lens and imaging apparatus

The present invention is directed to provide an enhanced variable power zoom lens that is lightweight as a whole, and especially, has its focusing lens optics reduced in weight so as to relieve of a load on a focusing drive system, and that has its anti-vibration lens optics reduced in both diameter and weight so as to relieve of a load on an anti-vibration drive system and downsize the same. The enhanced variable power zoom lens is adapted to have the foremost or first lens group of positive refractivity, the second lens group of negative refractivity, the third lens group of positive refractivity, the fourth lens group of negative refractivity, and the fifth lens group arranged in this sequence from a position closer to the object where a distance between each pair of the adjacent lens groups is varied during zooming from the wide-angle end to the telephoto end, each lens group comes closer to the object at the telephoto end than at the wide-angle end, the third lens group and the fourth lens group separating the farthest apart from each other at the intermediate zooming range, and the fourth lens group is moved closer to the image plane for shifting from infinity focusing to proximity focusing.

An image pickup lens includes: a first lens group including a single negative lens and a single positive lens disposed in order from the object side to the image side and having a positive refracting power; and a second lens group having a positive refracting power. The first and second lens groups are disposed in order from the object side to the image side. The first lens group is fixed, when the image pickup object distance varies from the infinity to the proximity, with respect to an image surface while the second lens group is moved from the image side to the object side to carry out focusing.

Image pickup lens and image pickup apparatus

A tilt lens system includes a focus lens unit movable during focusing; a diaphragm sharing a primary optical axis with the focus lens unit; and a tilt lens unit, arranged on an image side of the focus lens unit and the diaphragm, having a negative refractive power and an optical axis tiltable with respect to the primary optical axis. Conditional Expressions (1) and (2) are satisfied as follows,1.3&#x3c;&#x3b2;t&#x3c;1.7&#x2003;&#x2003;(1)0&#x3c;P&#x3c;H1&#x2003;&#x2003;(2)where &#x3b2;t is a lateral magnification of the tilt lens unit in a not tilted state, P is a distance from a most object side surface of the tilt lens unit to a rotating center of the tilt lens unit in a tilted state, and His a distance from the most object side surface of the tilt lens unit to a first principal point of the tilt lens unit.

Tilt lens system and image pickup apparatus

An image capture lens includes: when changed from infinity to close focusing, a first lens group moving from an image to an object with positive refractive power; and a second lens group fixed relatively to the image with negative refractive power, wherein the first lens group includes a negative first lens having a strong concave surface facing the image, the second lens group includes one negative lens having a strong concave surface facing the image or a negative cemented lens including positive and negative lenses, and conditional expressions; 0.7&#x3c;f1/fi&#x3c;0.9, 1.0&#x3c;bf/fi&#x3c;1.4, 0.5&#x3c;Rf2/Rr2&#x3c;1 are satisfied where fi: overall focal length, f1: first-lens-group focal length, bf: overall back focus, Rf2: radius of curvature of the image-side surface of the lens nearest to the object, and Rr2: radius of curvature of the surface nearest to the image of the second lens group.

Growing community of inventors

Kanagawa, Japan

Masafumi Sueyoshi