Kyocera Corporation

Nec Corporation

Kyocera Optec Co., Ltd.

Takaharu Fujii

Takashi Saotome

Daisuke Kanai

Toshichika Sakai

Kousuke Sugiki

Yasuo Yashiba

Satoru Kihara

Hiroki Taoka

Kazuto Miyazaki

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

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.

Body cavity observation system, laparoscope system, trocar apparatus, and operation method of body cavity observation system

Trocar

Trocar handle

In a semiconductor device capable of obtaining an optimum delay time, a plurality of delay circuits are connected in series to one another through points of connections between two adjacent ones of the delay circuits to produce a plurality of reference delay signals derived from the delay circuits. One of the reference delay signals is decided as the optimum delay time with reference to a practical condition. Thus, the delay time can be varied in the semiconductor device.

Semiconductor device capable of trimming minimum delay time and maximum delay time of an output signal

The semiconductor device for setting a delay time, according to the present invention, comprises: a plurality of serially connected delay circuits into which a reference signal is input; a selector switch for selecting one of delay signals output from connection points between the delay circuits; and an internal selection signal generator for producing a selection signal for switching the selector switch to select one of the connection points.

Semiconductor device for setting delay time

A semiconductor integrated circuit device is expected to output a multi-bit output signal at an extremely narrow timing in response to a system clock, wherein the semiconductor integrated circuit device includes synchronous latch circuits, a first phase-locked loop responsive to the system clock for producing a dummy data signal and a high-frequency intermediate clock signal, a delay circuit for producing a delayed clock signal delayed from the system clock by a predetermined number of clock pulses of the high-frequency intermediate clock signal and a second phase-locked loop comparing a dummy output signal with the delayed clock signal for producing a synchronous clock signal at appropriate timing, and the synchronous latch circuits is responsive to the synchronous clock signal for latching data signals and the dummy data signal, thereby outputting the output signals and the dummy output signal within the narrow timing.

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Tokyo, Japan

Takaharu Fujii