Nikon Corporation

Nec Tokin Corporation

Tochigi Nikon Corporation

Kunihiko Shimizu

Koji Nagaoka

Katsuhiro Yoshida

Hisanori Togawa

Noriyasu Kotani

Takuji Hamasaki

Teppei Okuyama

Takashi Kono

Toshihiko Nishiyama

Akihiko Obama

Koji Sakata

Masako Ohya

Tadamasa Asami

Mizuki Wayu

Kazuyuki Kato

Kazuyuki Katoh

Takashi Mizukoshi

Hiroyuki Ishigami

Daisuke Yamashita

Kazuhiro Koike

Satoshi Waizumi

Takehiro Koizumi

A lens barrel includes a first frame, a second frame rotatable with respect to the first frame, an urging member held by one of the first frame and the second frame, and a moving member that is disposed to be movable in optical axis direction and transfers an urging force of the urging member to the another one of the first frame and the second frame.

Lens barrel and imaging apparatus

The present invention provides a lens barrel capable of changing the aperture diameter according to a zoom position while having a short length. A lens barrelaccording to the present invention comprises: a aperture unithaving a cam follower; and a moving tubehaving a cam groovefor engaging the cam follower, the moving tube being provided at the outer circumference of the aperture unitand able to move along the optical axis direction.

Lens barrel

A lens barrel capable of increasing the moving range of a lens includes: a lens retainer frame for holding a lens; a drive unit for driving the lens retainer frame along the optical axis direction; a first cylinder that holds the drive unit and has a cam follower; a second cylinder that has a cam groove for engaging the cam follower; and a bias part for biasing the first cylinder along the optical axis.

A lens barrel is removeably attachable to an image pickup unit, wherein a large amount of shake can be corrected. This lens barrel includes a mounting part that is removeably attachable to an image pickup unit, including: an image forming optical system that forms a subject image for the image pickup unit; a support unit that supports at least a portion of the image forming optical system; and a fixed unit that is disposed outside of the support unit and that is fixed to the mounting unit. The support part is relatively rotatable and moveable with respect to the fixed unit, about at least two axes which are substantially orthogonal to the light axis of the image forming optical system.

Lens barrel and camera body

An optical system comprises a first lens group Gdisposed in a most object side and having positive refractive power, a stop member ST disposed at an image side of the first lens group G, and a second lens group Gdisposed at an image side of the stop member ST. A predetermined conditional expression is satisfied, whereby light beyond the maximum angle of view collected on the focal point position of a most object side lens group having positive refractive power is reduced, so that heat generated by a member in the vicinity of the focal point position is reduced.

Optical system and optical device provided therewith

A solid electrolytic capacitor is provided in which volume efficiency of its capacitor element is improved. A converting substrate having an anode terminal forming portion and cathode terminal portion obtained by forming notches on faces exposed on outside faces of the anode and cathode portions and performing plating in the notches in portions in which the anode and cathode portions of a lower-face electrode type solid electrolytic capacitor is connected to the capacitor element and, after a sheathing resin is formed therein, the sheathed portion and converting substrate are cut along cutting planes to form fillet forming faces on the outside faces of the anode portion and cathode portion of the lower-face electrode type solid electrolytic capacitor.

Solid electrolytic capacitor and method of manufacturing same

A solid electrolytic capacitor includes a porous sintered body made of a valve-acting metal and embedded with part of an anode lead having a protruding portion, a solid electrolyte layer formed in contact with a dielectric layer formed in the porous sintered body, a mounting anode terminal member, a mounting cathode terminal member, and an insulating casing resin. The capacitor further includes a small piece of a metal frame made of a valve-acting metal. This small piece of the metal frame is formed integrally with the protruding portion of the anode lead by cutting, after the anodic oxidation, the metal frame to which the protruding portion of the anode lead is fixed by resistance welding. The small piece of the metal frame and the mounting anode terminal member are connected together by wire bonding so that the anode lead and the mounting anode terminal member are electrically connected together.

Solid electrolytic capacitor and method of manufacturing the same

Chip-type solid state electrolytic capacitor

An Nb solid electrolytic capacitor is disclosed which comprises: an anode body made from an Nb-based material, the anode body having a nitrogen content of about 7,500 ppm to about 47,000 ppm; a dielectric layer formed over the surface of the anode body; a solid electrolyte layer formed on the dielectric layer; and a cathode body formed on the surface of the solid electrolyte layer. The Nb solid electrolytic capacitor shows small bias dependence. A method for preparing the same is also disclosed which comprises steps of: forming an anode body from an Nb-based material, the anode body having a nitrogen content of about 7,500 ppm to about 47,000 ppm; forming a dielectric layer over the surface of the anode body; forming a solid electrolyte layer on the dielectric layer; and forming a cathode body on the electrolyte layer.

Nb solid electrolytic capacitor and method for preparing the same

On the porous surface of valve metal, an anodically-oxide film of the valve metal is formed and, after that, a conducting polymer layer is formed on the oxide film. Subsequently, the conducting polymer layer is dried and, after that, the anodically-oxide film of the valve metal is reformed. As mentioned above, the water content in the conducting polymer layer is reduced by drying and, after that, the anodically-oxide film of the valve metal is reformed, so that a peroxidative reaction with moisture in the conducting polymer layer in the reformation can be suppressed and an excessive insulation of the conducting polymer layer can be prevented. Consequently, there can be obtained a solid electrolytic capacitor in which an increase in equivalent series resistance is prevented and the conducting polymer layer is made of a solid electrolyte.

Growing community of inventors

Tokyo, Japan

Kunihiko Shimizu