Kyocera Corporation

Riken Corporation

Organ Technologies, Inc.

Kyocera Optec Co., Ltd.

Takashi Saotome

Takaharu Fujii

Daisuke Kanai

Kousuke Sugiki

Satoru Kihara

Hiroki Taoka

Kazuto Miyazaki

Takashi Tsuji

Koh-ei Toyoshima

An imaging lens unit includes a resin lens barrel and a plurality of lenses incorporated in the lens barrel. The lens barrel has a lens barrel body and a box-shaped part. A plurality of lens receiving parts are arranged at predetermined intervals in a circumferential direction of the lens barrel body and protrude from an inner peripheral surface of the lens barrel body. The fourth lens is fixed to the lens barrel in a state of being engaged with the plurality of lens receiving parts.

Imaging lens unit and manufacturing method thereof

An imaging lens includes a front group having negative power, an aperture stop, and a rear group having positive power, in order from an object side. In the front group, a first lens surface has a convex shape toward the object side. In the rear group, a second lens surface has a convex shape toward the object side, a third lens surface has a convex shape toward the image side, and the third lens surface has an infrared ray cut coat. A curvature radius of the second lens surface is represented by Rr, a curvature radius of the third lens surface is represented by Re, a distance from the second lens surface to the third lens surface on an optical axis is represented by Da, and the following condition is satisfied: 1.6<(Rr+|Re|)/Da<2.3.

Imaging lens and imaging apparatus

A trocar apparatus includes a trocar and a trocar shaft. The trocar has a retractable-type camera section and a seal unit. The seal unit has a dome type seal and a first mount. A step is formed on the proximal side of a puncture member at the distal end of the trocar shaft. A relationship between a puncture member length Lof the puncture member and an interval Lin the axial direction of the trocar from the boundary position between a pipe section and a head section to a first mount opening satisfies conditional formula (A) given below:1>2  (A).

Trocar apparatus

An imaging lens may be a retrofocus type imaging optical system including, in order from an object side, a first lens group, an aperture and a second lens group. The first lens group may include, from the object side, a meniscus as a first lens in which a convex surface is formed on the object side, and a meniscus lens as a second lens in which a convex surface is formed on the object side. The second lens group may include a convex lens as a third lens, a biconvex lens as a fourth lens, a biconvex lens as a fifth lens and a sixth lens, and the fifth lens and the sixth lens may be joined to each other. The imaging lens may be constructed with 6 elements and 5 groups including the first lens group and the second lens group.

Imaging lens and camera device equipped with imaging lens

Provided are a hair observation method, a phase contrast microscope system, and a preparation. The hair observation method includes capturing an infrared image of the hair using an image sensor that is capable of detecting infrared light. A phase contrast microscope system includes: a stage having a sample placed thereon; an infrared light irradiation source for irradiating infrared light to the sample placed on the stage; an image sensor that is capable of detecting infrared light and configured to capture an infrared image of the sample; and a display apparatus configured to display the infrared image captured by the image sensor. The preparation includes a microscope glass and a plurality of hair pieces that are obtained by cutting one hair and arranged on the microscope glass in a manner parallel with one another from one end to another end in a cutting order.

Hair observation method, phase contrast microscope system, and preparation

A trocar for inserting a surgical instrument in a body may include: a pipe including an outer cylinder relatively slidable in an axial direction, and an inner cylinder; a head located on a proximal end of the pipe; a camera that is journaled in a distal end notch of the pipe inner cylinder so as to be turnable between a deployment state in which the camera rotates to the outside of the pipe and a storage state in which the camera is stored inside the pipe; and a coil spring biasing the camera to the deployment state.

Trocar with deployable camera

A trocar with camera has a camera section. The camera section obtains a trocar image that includes an image of a white part on a surface of a puncture member by performing imaging when the puncture member of a trocar shaft is exposed at a deployed position. A white balance setting section for trocar image sets a white balance for the trocar image based on the image of the white part in the trocar image.

Growing community of inventors

Ome, Japan

Takashi Saotome