Canon Kabushiki Kaisha

Sodick Co., Ltd.

Toshio Kaji

Tsutomu Takayama

Akihiko Tojo

Takao Kinoshita

Nobuyoshi Tanaka

Seiji Hashimoto

Masao Suzuki

Ichiro Araie

Yasuyuki Miyashita

Tokuzo Kato

Kenji Kyuma

Kunihiko Yamada

Katsuhiko Kobayashi

Hiroyuki Shimizu

Atsushi Hirota

Hiroshi Amioka

Tatsuro Hayakawa

Yoshifumi Ichikawa

Kensuke Kashimura

Atsushi Kawamura

Yukihiro Adachi

An irradiation device of a lamination molding apparatus includes: at least one laser source, generating a laser beam; a first galvano scanner, scanning the laser beam; a second galvano scanner, scanning the laser beam; and an irradiation controller, controlling the laser source, the first galvano scanner, and the second galvano scanner. Irradiable ranges of the laser beams by using the first galvano scanner and the second galvano scanner respectively include an entire of a molding region. A first X-axis galvano mirror and a first Y-axis galvano mirror of the first galvano scanner and a second X-axis galvano mirror and a second Y-axis galvano mirror of the second galvano scanner are disposed to be plane-symmetric to each other.

Lamination molding apparatus

A stress controlled layer is constituted to include a compressive stress applied part that is a region to which a compressive stress is applied and a compressive stress non-applied part that is a region different from the compressive stress applied part. In a solidifying step, scanning of a laser beam or an electron beam is performed while a scanning direction for the compressive stress applied part is different from a scanning direction for the compressive stress non-applied part such that the compressive stress applied part expands further than the compressive stress non-applied part or the compressive stress non-applied part shrinks compared with the compressive stress applied part based on a relationship between the scanning direction and an expansion quantity or a shrinkage quantity at a time of temperature change or at a time of heat treatment.

Method of additive manufacturing

A lamination molding method, which repeats a material layer forming step of forming a material layer and a solidifying step of irradiating an irradiation region of the material layer with laser beams scanned by n scanners to form a solidified layer, includes: a first dividing step and an irradiation order deciding step. In the first dividing step, the irradiation region is divided to 2n-1 or more divided regions by a plurality of first dividing lines in a manner that irradiation time of each of the divided regions to which the laser beams are simultaneously irradiated becomes equal. In the irradiation order deciding step, an irradiation order of the divided regions in the solidifying step is decided in a manner that the laser beams are simultaneously irradiated to the divided regions that are not adjacent, and the laser beams are not simultaneously irradiated to the divided regions that are adjacent.

Lamination molding method and lamination molding system

The disclosure provides a method of additive manufacturing a three-dimensional object, which can prevent a blade from being caught by a deformed part that is generated due to an unpredictable change of a sintering condition. In the method of additive manufacturing the three-dimensional object, if a deformed part having any height is generated on the upper surface of the nsintered layer, when the next n+1sintered layer is formed, the n+1powder layer is irradiated with laser by avoiding the region where the deformed part is generated. Then, after the n+2powder layer is formed, the unsintered part is sintered together with the n+2powder layer.

Method of additive manufacturing a three-dimensional object

An image processing apparatus provided with an electronic zooming device for electronically enlarging the image around a selected position in the image area, and a display control circuit for displaying an area to be enlarged, in the image area, prior to the image enlargement in the electronic zooming operation.

Image pickup apparatus provided with enlargement process means for enlarging image signals output from an image pickup device

An image pickup apparatus comprises an image enlargement circuit for enlarging an image around a viewpoint position in a picture and a control circuit for changing a focus detection area or a photometry area to an area having position and size adaptive to an enlarged image, prior to an enlargement operation by the image enlargement circuit.

Image pickup apparatus

Disclosed is an image pick-up device which uses a charge transfer type solid state image pick-up device, and further is provided with a shutter so as to form a high quality picture signal in such a manner that the smear is prevented by prohibiting the incidence of the light on the device while the charge is transferred in the device. Further, the device is driven by a clock signal for still photographing in order to obtain a high quality picture information for one frame surely. Further, the photographing parameter is automatically changed over or the monitor is changed over between the motion picture photographing mode and the still photographing mode.

Image pick-up device having switching over means, image pick-up means,

Image pick-up device

A device performs color balance adjustment on the basis of color temperature information obtained by adding up measured color information outputs sampled from color sensors which obtain measured color information from an object to be photographed.

High speed color balance adjusting device capable of compensating for a

A recording and reproducing apparatus which is arranged to shorten a stand-by period and to suppress the appearance of noises comprises: a selection circuit arranged to select either a recording mode or a reproducing mode; and a control circuit which is arranged to operate, accxording to the result of detection of tracks on a recording medium, to shift a head to a vacant track on the medium when the recording mode is selected by the selection circuit, to shift the head to a recorded track on the medium when the reproducing mode is selected and to accomplish the shifting operation within a blanking period of a video signal.

Recording and reproducing apparatus

A color filter arrangement having complementary color filters for mounting on an image pickup having a plurality of picture elements. The color filters are arranged to overlie respective picture elements and are further arranged to overlap each other over boundaries between respective picture elements with widths wider than the boundaries between the respective picture elements, thereby offsetting any misalignment of the filter arrangement during cementing. Also, an image pickup device including an image pickup arrangement for converting an optical image into electrical image information, the pickup arrangement having a plurality of picture elements including first and second picture elements, and the pickup device further including a color filter member at least consisting of a first part which is provided for the first picture element.

Color filter arrangement for an image pickup device having complementary

Solid state pick-up having particular exposure and read-out control

An image pick-up device which uses a charge transfer type solid state image pick-up device, and further is provided with a shutter so as to form a high quality picture signal in such a manner that smear is prevented by prohibiting the incidence of light on the device while the charge is being transferred in the device. Further, the device is driven by a clock signal for still photographing in order to obtain a high quality picture information for one frame. Further, the photographing parameter is automatically changed over or the monitor is changed over between the motion picture photographing mode and the still photographing mode.

Growing community of inventors

Kanagawa, Japan

Toshio Kaji