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.

公开(公告)号：US20020110320A1

公开(公告)日：2002-08-15

申请号：US09782387

申请日：2001-02-12

Applicant: Silicon Light Machines

Inventor： Clinton Carlisle ,  Jahja Trisnadi

IPC: G02B006/32

CPC classification number: G02B6/4298 ,  G02B6/4206 ,  H04N5/74 ,  H04N5/7416

Abstract: The present invention is directed to illuminating a one-dimensional spatial light modulator using an illumination system employing multiple light sources. The illumination system comprises a parallel array of light sources which provides a plurality of light outputs to an optical train. The optical train effectively combines the light sources into a single light source. The single light source provides a single light output for uniformly illuminating the spatial light modulator. The optical train includes a first optical train for receiving the light outputs from each light source, magnifying each light output, and overlaying each of the light outputs to form a single real magnified image. A mode conversion lens receives the single real magnified image, converts a mode profile of the single real magnified image into a top hat mode profile, and outputs a diverging light beam with a top hat mode profile. A second optical train shapes the light beam into an appropriate spatial geometry in such a manner that the light beam effectively illuminates the entire spatial light modulator, and directs the light beam onto the spatial light modulator.

Abstract translation: 本发明涉及使用采用多个光源的照明系统来照射一维空间光调制器。 该照明系统包括一个平行的光源阵列，它向光学列车提供多个光输出。 光学列车将光源有效地组合成单个光源。 单个光源提供用于均匀照明空间光调制器的单个光输出。 光学列车包括用于接收来自每个光源的光输出的第一光学列，放大每个光输出，并覆盖每个光输出以形成单个实际放大图像。 模式转换镜头接收单个实际放大图像，将单个实际放大图像的模式轮廓转换为顶帽模式轮廓，并输出具有顶帽模式轮廓的发散光束。 第二光学系列将光束形成适当的空间几何形状，使得光束有效地照射整个空间光调制器，并将光束引导到空间光调制器上。