Takata Corporation

Sony Corporation

Nec Corporation

Hoya Corporation

Saturn Licensing LLC

Sony Group Corporation

Pentax Corporation

Seiko Optical Products Co., Ltd.

Hiroaki Fujii

Soya Araki

Hisanori Tsuboi

Koji Tanaka

Hidetomo Miyake

Satoshi Mukoyama

Hitoshi Fujita

Hiromasa Tanji

Takeshi Yamamoto

Hideaki Yano

Shinpei Nagatani

Eiji Yanagi

Takahiro Yamanishi

Koichi Furukawa

Ryuji Yano

Sachiko Nasu

Nobuya Osada

Hiroshi Aoki

Yoshiro Asano

Masahiro Higuchi

Keishi Yokota

Ryoji Saiguchi

Hideo Takeda

Atsushi Tsuji

Kenichi Kobayashi

Ichizo Kobayashi

Shigeru Kohama

Katsuyuki Sakai

Tadayuki Ato

Hiroshi Kajiyama

Ryoichi Yoshida

Kenji Endo

Takuji Ohkubo

Kenji Kitazawa

Ryouichi Yoshida

Tomoko Shimizu

Tomohiro Ito

Hiroaki Yokota

Moriyasu Shirayanagi

Ichiro Amamori

Takeshi Sakuma

Yoshiyasu Ueno

Dai Yoneya

Akiko Gomyo

Kazuhiko Takatsuka

Akihito Yajima

Kentaro Kato

Masaki Ohya

Nobuaki Higuchi

Ryoichi Teramoto

Yuichi Sawatari

Takefumi Ikenoya

Kiyotaka Ninomiya

Norio Uda

Rika Tokoro

Yuichi Sawawatari

Provided is a display apparatus including a display panel for displaying an image, a heat source arranged at a side surface of at least one side of the display panel, a heat absorbing section for absorbing heat generated by the heat source, a back surface plate arranged at a back surface side of the display panel and made of a metal, a portion of the back surface plate being in c lose contact with the heat absorbing section, a front surface plate arranged at a front surface side of the display panel and made of a metal, and a middle chassis arranged between the front surface plate and the heat absorbing section.

Display apparatus

Provided is a sound output device including a drive unit that has a sound output section inside and that is formed in an annular shape and an electric unit that has a drive control section inside and that is coupled to the drive unit. A space inside the drive unit is formed as an intake hole that takes in an external sound. The sound output device is attached to an ear with the drive unit inserted into a cavum concha. Accordingly, in a state in which the electric unit is coupled to the drive unit and the drive unit is inserted into the cavum concha to be attached to the ear, an external sound taken in from the intake hole that is the space inside the drive unit goes to the external auditory canal. Therefore, a stable and favorable wearing state on the ear can be ensured, and at the same time, a state in which an external sound is taken in naturally can be ensured.

Sound output device

The objective lens unit includes, a front lens group having a negative refractive power, a diaphragm, and a rear lens group having a positive refractive power, in order from an object side. The front lens group includes a negative lens having a concave surface facing an image surface side, and a positive lens having a convex surface facing the object side, and the rear lens group includes a positive lens having a convex surface facing the image surface side and a cemented lens in which a positive lens and a negative lens are cemented. The endoscope objective lens unit satisfies &#x2212;1.6&#x3c;f/f&#x3c;&#x2212;1.2 and &#x2212;1.0&#x3c;SF&#x3c;&#x2212;0.5. fand fare the focal lengths of the front lens group and the rear lens group, SFis (R+R)/(R&#x2212;R), and Rand Rare respectively the curvature radiuses of surfaces.

Endoscope objective lens unit and endoscope

The objective lens unit includes, a front lens group having a negative refractive power, a diaphragm, and a rear lens group having a positive refractive power, in order from an object side. The front lens group includes a negative lens having a concave surface facing an image surface side, and a positive lens having a convex surface facing the object side, and the rear lens group includes a positive lens having a convex surface facing the image surface side and a cemented lens in which a positive lens and a negative lens are cemented. The endoscope objective lens unit satisfies &#x2212;1.6&#x3c;f/f&#x3c;&#x2212;1.2 and &#x2212;1.3&#x3c;f/f&#x3c;&#x2212;0.7. Note that fand fare focal lengths of the entire system of the front lens group and the rear lens group, and fis a focal length of a positive lens, in the rear lens group.

A display which thickness is allowed to be reduced is provided. A display includes: a display panel; and a back-face member having rigidity and provided on a back face of the display panel, the back-face member covering the back face, or the back face and other part of the display panel.

Display

An endoscope magnification optical system includes, in order from an object side, a first lens group having a negative power, a second lens group having a positive power, and a third lens group having a meniscus lens with a convex surface facing the object side. A distance from a lens surface of the first lens group that is nearest to the object side to an image surface is kept constant while the second lens group is moved in an optical axis direction with respect to the first lens group and the third lens group, which are fixed lens groups, and thereby an optical image is magnified.

Endoscope magnification optical system, endoscope, and endoscope system

A light source optical system includes a light source, an optical system that collects light incident from the light source; and a light guide rod having a reflecting inner surface for guiding light received through an entrance port to an exit port by total internal reflection, the reflecting inner surface being gradually tapered, towards a light guide axis in the direction of the exit port, in one of an entire region defined from the entrance port to the exit port, and a region defined from a midway point between the entrance port and the exit port to the exit port.

Light source optical system having tapered light guide rod

A variable power optical system for an endoscope comprising a first lens group having a negative power, a second lens group having a positive power and a third lens group, and wherein the first lens group includes at least a negative lens having a concave surface pointing to an image side and a positive meniscus lens having a concave surface pointing to an object side, the second lens group includes at least a meniscus lens having a convex surface pointing to the object side and a cemented lens formed by cementing together a negative lens and a positive lens, and the third lens group includes at least a positive lens having a convex surface pointing to the object side, and wherein the variable power optical system for an endoscope is configured to satisfy a predetermined condition.

Endoscope and variable power optical system for the same

A display includes: a display panel; a front-face member being provided on a front face of the display panel, and the front-face member covering a surrounding section, or the surrounding section and other part of the display panel; and a back-face member having rigidity and being provided on a back face of the display panel, the back-face member covering the back face, or the back face and other part of the display panel.

An endoscope magnification optical system includes, in order starting from an object side, a first lens group having positive power, a second lens group having positive power, and a third lens group including at least a meniscus lens with a concave surface facing the object side and a positive lens, and the endoscope magnification optical system is configured to magnify an optical image by moving at least the second lens group in an optical axis direction with respect to the first lens group, which is a fixed lens group, while a distance from a lens surface located the closest to the object of the first lens group to an image plane is kept constant.

Endoscope magnification optical system and endoscope

A display includes: a plate member having flexibility and including a first face and a second face that face each other; a frame member provided on the first face of the plate member and extending in one direction of the first face; and a display body having flexibility and disposed on a side of the plate member on which the second face is provided.

Growing community of inventors

Tokyo, Japan

Hiroaki Fujii