公开(公告)号：US5169418A

公开(公告)日：1992-12-08

申请号：US765809

申请日：1991-09-26

Applicant: Shigeo Honda ,  Hiroaki Abe ,  Kazutomo Isono

Inventor： Shigeo Honda ,  Hiroaki Abe ,  Kazutomo Isono

IPC: F24F7/06 ,  F24F3/16

CPC classification number: F24F3/161

Abstract: A clean room arrangement comprises a clean room having an upper portion and a lower portion. Clean air is introduced into the upper portion of the clean room, flows downward and expelled from the lower portion of the clean room. An air recirculation passage is connected to the clean room such that the lower portion of the clean room is communicated with the upper portion of the clean room. A heat source is provided in the air recirculation passage to generate an ascending flow of air in the air recirculation passage so that the air descends in the clean room due to natural convection.

公开(公告)号：US5085503A

公开(公告)日：1992-02-04

申请号：US584612

申请日：1990-09-19

Applicant: Yukihisa Osugi ,  Hiroaki Abe ,  Yoshinari Kozuka

Inventor： Yukihisa Osugi ,  Hiroaki Abe ,  Yoshinari Kozuka

IPC: G02F1/03

CPC classification number: G02F1/0338

Abstract: A spatial light modulating element including an electrooptic and photoconductive single crystal plate, a light-transmitting insulating layer provided on at least one of opposite surfaces of the electrooptic and photoconductive single crystal plate, and a pair of electrodes provided for applying an electric field to the insulating layer and the single crystal plate. The insulating layer is formed from a uniaxial single oxide crystal which is crystallographically oriented such that the insulating layer exhibits neither birefringence, nor an electrooptic effect in a direction of the electric field. The insulating layer may be a LiNbO.sub.3, LiTaO.sub.3 or TiO.sub.2 (rutile) single crystal plate cut normal to the (001)-axis.

Abstract translation: 一种空间光调制元件，包括电光和感光单晶板，设置在电光和光电导单晶板的至少一个相对表面上的透光绝缘层，以及一对电极，用于向 绝缘层和单晶板。 绝缘层由晶体取向的单轴单氧化物晶体形成，使得绝缘层在电场方向上既不显示双折射也不显示电光效应。 绝缘层可以是垂直于（001）轴切割的LiNbO 3，LiTaO 3或TiO 2（金红石）单晶板。

公开(公告)号：US4984875A

公开(公告)日：1991-01-15

申请号：US384502

申请日：1989-07-25

Applicant: Hiroaki Abe ,  Shuhei Toyoda

Inventor： Hiroaki Abe ,  Shuhei Toyoda

IPC: G01R15/24 ,  G01R33/032 ,  G02B5/30 ,  G02B27/28 ,  G02F1/09

CPC classification number: G01R33/0322 ,  G02F1/09

Abstract: An optical unit or an optical sensor through which a light beam is propagated in a predetermined direction, having an optical component which includes at least one first single crystal element each having a property of causing dextrorotation of a plane of polarization of the light beam during propagation of the beam, and at least one second single crystal element each having a property of causing levorotation of the plane of polarization of the light beam. The first and second single crystal elements are superposed on each other in a direction perpendicular to the direction of propagation of the beam. The single crystal elements may be bonded together by direct solid-solid reaction, or by diffusion of a material of a thin bonding film interposed between the adjacent single crystal elements. The single crystal elements also exhibit a magnetooptical or Faraday effect when used in a magnetic-field sensor, for example.

公开(公告)号：US4091970A

公开(公告)日：1978-05-30

申请号：US795723

申请日：1977-05-11

Applicant: Yoshizo Komiyama ,  Hiromi Nakamura ,  Hiroaki Abe

Inventor： Yoshizo Komiyama ,  Hiromi Nakamura ,  Hiroaki Abe

IPC: B22D17/02 ,  B22D17/04 ,  B22D39/00

CPC classification number: B22D17/04

Abstract: In a pump for use in a hot chamber type die casting machine wherein corrosive molten metal particularly aluminum or alloys thereof is injected into a metal mould through a goose neck shaped passage, a porous ceramic tube having a porosity of 10 to 40% and acting as the goose neck shaped passage is cast in the main body of the pump. The porous ceramic tube comprises sintered zircon or porous graphite.

Abstract translation: 在用于热室式压铸机的泵中，其中腐蚀性熔融金属特别是铝或其合金通过鹅颈形通道注入金属模具中，具有10-40％孔隙度的多孔陶瓷管，作为 鹅颈形通道被浇铸在泵的主体中。 多孔陶瓷管包括烧结的锆石或多孔石墨。