Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Funai Electric Company Ltd.

Canon Kabushiki Kaisha

Fuji Photo Film Company, Limited

Yutaka Takahashi

Naoto Yumiki

Motoyuki Nawa

Norio Sugawara

Seiji Takemoto

Masaru Nishijo

Kenji Nagashima

Takayuki Hayashi

Hiroki Matsubara

Keijirou Kunimoto

Shigeki Ueda

Ken Nishioka

Atsuhiko Chikaoka

Manabu Murayama

Daisuke Bessyo

Atsuya Hirano

Hiroshi Nishigaki

Takaaki Kusaka

Hidetaka Yabuuchi

Shinichi Nakajima

Satomi Uchiyama

Hiroshi Uno

Ikuo Kobayashi

Ikuhiro Inada

Hitoshi Kurita

Nobuyuki Hirai

Shinya Yasuda

Ryoichi Koga

Isao Inagawa

Masao Noguchi

Masaru Kikukawa

Akio Tajima

Toshihiro Takai

Keiko Nakanishi

Nobuyuki Baba

Takahiro Harigae

Toshinori Hirano

Kimihiro Fujimoto

Dexu Zhang

Takamune Suzuki

Masanobu Hattori

In a three-dimensional modeling apparatus, diffusion of fumes generated around the modeling stage accompanying irradiation with an energy beam can be efficiently prevented. Three-dimensional modeling is performed by repeating scanning a modeling material arranged on a modeling stage with laser light to form a solidified layer. A cover is provided that locally surrounds an irradiation portion on the modeling material arranged on the modeling stage irradiated with the laser light, and suppresses diffusion of the fumes caused by irradiation with the laser light. In the cover, a stream of gas containing the fumes is regulated so as to cause the fumes to flow toward an upward portion inside the cover apart from the irradiated portion irradiated with the laser light.

Three-dimensional modeling apparatus, three-dimensional model body manufacturing method, and three-dimensional modeling data

A resin-junction body includes a first resin member, a second resin member including a concave portion and laminated on the first resin member so as to contact the first resin member at a contact surface. The concave portion comprises a bottom face on a first resin member side. The resin-junction body further includes a joining layer that joins the first resin member and the second resin member and that extends from the bottom face towards the first resin member.

Resin-junction material and joining method for resin member

A laser projector includes a green laser, a two-wavelength laser, a PBS, a collimator lens, a two-axis galvanometer mirror, a group of lenses, and a screen. The green laser emits a green laser beam. The two-wavelength laser emits red and blue laser beams. The PBS is provided at the position where respective optical paths of laser beams emitted from respective lasers cross each other to cause these optical paths to coincide with each other.

Image display apparatus

An enlarging optical unit receives laser light emitted from a laser light source, enlarges a light flux of the received laser light to have a diverging angle corresponding to a swing angle of a scanning mirror and provides it to the scanning mirror.

Laser projector performing laser raster scan using a scanning mirror

A collapsible lens barrel includes a first holding frame () for holding a first lens group (L), a second holding frame () for holding a second lens group (L) that is disposed on an image plane side with respect to the first lens group (L), an actuator () for moving the second holding framein an optical axis direction, and a tubular cam frame () including a plurality of cam grooves that are formed at substantially equal intervals around a circumferential direction for moving the first holding frame () in the optical axis direction. The actuator () is attached to a portion in the cam frame () where the cam grooves are not formed. The first lens group (L) is moved using the cam grooves, and the second lens group (L) is moved using the actuator (), so that a faster zooming speed and a lower zooming noise can be achieved.

Collapsible lens barrel and optical instrument using the same

Disclosed is a projection image display apparatus to display an image by projecting a light from a light source to a screen including a scan mirror to scan the light from the light source by vibrating in a sine vibration manner at least in an one-dimensional direction and a correction lens which is disposed between the scan mirror and the screen and which corrects a deflection angle of the light scanned by the scan mirror at least in the one-dimensional direction, and the correction lens carries out a correction so that the larger a scan angle of the scan mirror is, the larger the deflection angle is to be by the correction.

Projection image display apparatus

A cam pin () and a demating prevention pin () that are provided in a driving frame () and have an identical shape are allowed to mate with a cam groove () and a demating prevention groove () that are provided in a cam frame (), respectively. A first protrusion () is provided on at least one side in an optical axis direction of a portion of the demating prevention groove () with which the demating prevention pin () mates when the driving frame () is advanced. When an external force is applied to the driving frame (), a cylindrical portion () of the demating prevention pin () and the first protrusion () come into contact with each other. This prevents the cam pin () from demating from the cam groove (). The cam pin () and the demating prevention pin () are made of common components, making it possible to reduce the number of components.

Collapsible lens barrel

A lens barrel according to the present invention includes a first lens group; a second lens group; a third lens group; a first actuator for driving the first lens group; a second actuator for driving the second lens group; and third and fourth actuators for driving the third lens group. At least one of the first through fourth actuators is provided at a position such that magnetic flux leakage from at least one of the first through fourth actuators is canceled.

Lens barrel free from influence of magnetic flux leakage

Lens barrel

A portable heat transfer apparatus including a combustion device, a thermoelectric convertor for receiving the heat of the combustion device at its high temperature side, transferring the heat from its low temperature side to a heat exchanger, and generating electric power depending on the temperature difference between the high temperature side and low temperature side. A heat medium forced circulating device is driven by the power generated from the thermoelectric converter for transferring heat medium to the heat exchanger. Also provided is a heat releasing device for circulating and releasing the heat medium exchanged of heat in the heat exchanger. Therefore, the heat exchanger can be heated through the thermoelectric converter while heating the thermoelectric converter with the combustion device, and by heating with the heat exchanger. The temperature difference between the high temperature side and low temperature side of the thermoelectric converter can be obtained rationally and sufficiently. Therefore, the apparatus is reduced in size and weight, and it is convenient for portable use.

Heat transfer apparatus

A microwave heating apparatus includes a heating chamber,for accommodating an item,to be heated; a microwave generator,for radiating microwaves to the heating chamber,and a vapor generator,for supplying vapor to the heating chamber,. The heating chamber,includes regenerating plates,and,for generating and regenerating heat when radiated by the microwaves from the microwave generator,thereby reducing dew condensation caused by the vapor in the heating chamber

Microwave heating apparatus with a vapor generator and regenerating plates

Growing community of inventors

Hirakata, Japan

Yutaka Takahashi