公开(公告)号：WO1998032979A1

公开(公告)日：1998-07-30

申请号：PCT/US1997001051

申请日：1997-01-24

Applicant: SEAGATE TECHNOLOGY, INC. ,  DUNFIELD, John, C. ,  HEINE, Gunter, K.

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: F16C17/02

CPC classification number: F16C17/24 ,  F16C33/10 ,  F16C2233/00 ,  G01B7/144 ,  G01M13/04

Abstract: A hydrodynamic bearing which includes both a shaft (50) and a rotor rotating relative to one another and defining a hydrodynamic bearing in the gap (58) between the relatively rotating surfaces (60, 72).

Abstract translation: 一种流体动力轴承，其包括轴（50）和相对于彼此旋转并且在相对旋转的表面（60,72）之间的间隙（58）中限定流体动力轴承的转子。

公开(公告)号：WO2003023489A1

公开(公告)日：2003-03-20

申请号：PCT/US2001/047525

申请日：2001-11-09

Applicant: MICROVISION, INC. ,  DUNFIELD, John, C.

Inventor： DUNFIELD, John, C.

IPC: G02B26/10

CPC classification number: G02B26/101 ,  B81C1/00293 ,  G02B26/0833 ,  G02B26/0841 ,  G02B26/085 ,  G02B26/0858 ,  G02B26/105 ,  G02B27/017 ,  G02B27/0176

Abstract: A display apparatus includes a scanning assembly that scans about two or more axes, typically in a raster pattern. A plurality of light sources emit light from spaced apart locations toward the scanning assembly such that the scanning assembly simultaneously scans more than one of the beams. The scanning assembly is a resonant scanning assembly with a variable resonant frequency. The resonant frequency of the scanning assembly can be actively controlled by controlling partial pressure of fluids in a package containing the scanning assembly. In one embodiment, the increased partial pressure increases the mass of a scanning mirror, thereby changing the resonant frequency. In another embodiment, a gas absorbing material is coupled to a support arm that carries a scanning mirror. As the gas absorbing material absorbs gas, its physical properties change, thereby shifting the resonant frequency of the scanning assembly. Monitoring the resonant frequency relative to a desired frequency provides in error signal that can be used to frequency lock the resonant scanning assembly to an input signal.

Abstract translation: 显示装置包括扫描组件，扫描组件通常以光栅图案扫描两个或多个轴。 多个光源从间隔开的位置向扫描组件发射光，使得扫描组件同时扫描多于一个的光束。 扫描组件是具有可变谐振频率的谐振扫描组件。 可以通过控制包含扫描组件的包装中的流体的分压来主动地控制扫描组件的共振频率。 在一个实施例中，增加的分压增加了扫描镜的质量，从而改变了谐振频率。 在另一个实施例中，气体吸收材料连接到承载扫描反射镜的支撑臂。 当气体吸收材料吸收气体时，其物理性质改变，从而移动扫描组件的共振频率。 监测相对于期望频率的谐振频率提供了可用于将谐振扫描组件频率锁定到输入信号的误差信号。