公开(公告)号：US20020145806A1

公开(公告)日：2002-10-10

申请号：US09832699

申请日：2001-04-10

Applicant: Silicon Light Machines

Inventor： David T. Amm

IPC: G02B027/10 ,  G02B026/00

CPC classification number: H04N9/3161 ,  G02B5/1828 ,  G02B26/0808 ,  H04N5/7416

Abstract: A display apparatus projects an image onto a display screen and includes a grating light valve, a focusing arrangement and a scanning device. The grating light valve is located near but not at a focal plane of a line illumination such that in operation the grating light valve produces real or virtual two dimensional images. The grating light valve is configured such that the modular members on the surface of the grating light valve are neither parallel nor perpendicular to the effective pixel are, thereby arranged diagonally across the pixel area in order to eliminate any imperfections or defects in the line illumination. A seal glass is coupled with the grating light valve and forms an air gap between itself and the grating light valve such that the line illumination must pass through the seal glass and the air gap before reaching the grating light valve. Additionally, an absorbing aperture is affixed to the surface of the seal glass at the focal point of the line illumination in order to further filter background light.

Abstract translation: 显示装置将图像投影到显示屏上，并且包括光栅光阀，聚焦装置和扫描装置。 光栅光阀位于线照明的焦平面附近但不在焦平面处，使得在操作中光栅光阀产生真实或虚拟的二维图像。 光栅光阀被构造成使得光栅光阀表面上的模块化构件既不平行也不垂直于有效像素，由此斜对角地布置在像素区域上，以消除线照明中的任何缺陷或缺陷。 密封玻璃与光栅光阀耦合，并在其与光栅光阀之间形成气隙，使得线路照明必须在到达光栅光阀之前通过密封玻璃和气隙。 此外，在线照明的焦点处，吸收孔附着到密封玻璃的表面，以进一步过滤背景光。

公开(公告)号：US20020186448A1

公开(公告)日：2002-12-12

申请号：US09930831

申请日：2001-08-15

Applicant: Silicon Light Machines

Inventor： David T. Amm

IPC: G02B026/00

CPC classification number: G02B27/18

Abstract: A display apparatus projects a two dimensional image onto a display screen and includes illumination optics, a light modulator, separating optics and scanning optics. The light modulator is optically coupled to the illumination optics such that in operation the illumination optics illuminate the light modulator with an off-axis illumination and further such that the light modulator directs light onto an optic axis for a bright pixel, thereby forming on-axis light, and away from the optic axis for a dark pixel, thereby forming off-axis light. The separating optics are coupled to the light modulator and separate the off-axis and on-axis light where the on-axis light produces a real and virtual image that is displayed by the projection and scanning optics.

Abstract translation: 显示装置将二维图像投影到显示屏上，并且包括照明光学器件，光调制器，分离光学器件和扫描光学器件。 光调制器光耦合到照明光学器件，使得在操作中，照明光学器件以离轴照明照亮光调制器，并且进一步使得光调制器将光引导到用于亮像素的光轴上，从而形成轴上 光和远离光轴的暗像素，从而形成离轴光。 分离光学器件耦合到光调制器并分离离轴和轴上光，其中在轴光产生由投影和扫描光学器件显示的真实和虚拟图像。

公开(公告)号：US20030035215A1

公开(公告)日：2003-02-20

申请号：US09930838

申请日：2001-08-15

Applicant: Silicon Light Machines

Inventor： David T. Amm ,  Jahja Trisnadi ,  James Hunter ,  Christopher Gudeman ,  Dinesh Maheshwari

IPC: G02F001/03 ,  G02F001/07 ,  G02B005/18

CPC classification number: G02B26/0808

Abstract: A light modulator includes elongated elements arranged parallel to each other. In a first diffraction mode, the light modulator operates to diffract an incident light into at least two diffraction orders. In a second diffraction mode, the light modulator operates to diffract the incident light into a single diffraction order. Each of the elongated elements comprises a blaze profile, which preferably comprises a reflective stepped profile across a width of each of the elongated elements and which produces an effective blaze at a blaze angle. Alternatively, the blaze profile comprises a reflective surface angled at the blaze angle. Each of selected ones of the elongated elements comprise a first conductive element. The elongated elements produce the first diffraction when a first electrical bias is applied between the first conductive elements and a substrate. A relative height of the blazed portions are adjusted to produce the second diffraction when a second electrical bias is applied between the first conductive elements and the substrate. In an alternative embodiment, each of the elongated elements includes the first conductive element and multiple elongated elements are arranged in groupings, where each of the groupings includes at least three of the elongated elements. When the multiple elongated elements are at a first height, the incident light reflects from the elongated elements. When relative heights of the multiple elongated elements are adjusted by applying individual electrical biases between the first conductive elements and the substrate, the incident light diffracts into the single diffraction order.