公开(公告)号：WO9906873A3

公开(公告)日：1999-08-05

申请号：PCT/US9816067

申请日：1998-07-28

Applicant: PHYSICAL OPTICS CORP

Inventor： LIEBERMAN ROBERT A ,  MENDOZA EDGAR A ,  MINTZER DAVID

IPC: C03B8/02 ,  C03B19/12 ,  C03C17/02 ,  G02B5/02 ,  G02B5/32 ,  G03H1/00 ,  G03H1/02 ,  C03B32/00

CPC classification number: G02B5/0247 ,  C03B19/12 ,  C03C1/006 ,  C03C1/008 ,  C03C4/00 ,  C03C17/007 ,  C03C17/02 ,  C03C2204/08 ,  C03C2217/213 ,  C03C2218/113 ,  C03C2218/32 ,  G02B5/0252 ,  G02B5/0268 ,  G02B5/0278 ,  G02B5/32

Abstract: A holographic light shaping diffuser (LSD) is formed from a monolithic glass material by recording light shaping structures (sometimes collectively known as "speckle", particularly when the structures extend into the interior of the diffuser) in the glass material during its formation. A volume LSD may be produced by the photolithographic writting or other imaging of light shaping structures in a photosentitive glass material, including the steps of providing a sol-gel solution (30), mixing (32) casting (34), gelling/aging (36), exposing (38), heating (40), and consolidating (42). Alternatively, a surface LSD may be produced by this imaging process or by embossing light shaping structures onto a high quality optical glass or by embossing a light shaping structures on a glass film layer coated onto a substrate. Both types of diffusers control the angular spread of transmitted light while homogenizing otherwise spatially noisy light sources such as LCDs and filamented light sources and while maintaining damage thresholds consistent with any glass optical element. The LSD has a transmission efficiency of over 90 % from the ultraviolet wavelengths through the physical spectrum and into the near-infrared. Moreover, because the LSD is a true glass, it is capable of withstanding temperatures well beyond glass transition temperatures of plastic LSDs, can be formed in convex or concave surfaces through conventional molding, grinding, or polishing techniques, and can be coated by hot-coating techniques. The LSD also has a very high laser power threshold.

Abstract translation: 通过记录光形成结构（有时统称为“斑点”，特别是当结构延伸到扩散器的内部时），通过记录光成形结构（玻璃材料）形成全息光成形扩散器（LSD）。 可以通过在光敏玻璃材料中的光成形结构的光刻写入或其它成像来产生体积LSD，包括以下步骤：提供溶胶 - 凝胶溶液（30），混合（32）铸造（34），胶凝/老化（ 36），曝光（38），加热（40）和合并（42）。 或者，可以通过该成像处理或通过将光成形结构压印到高质量光学玻璃上或通过在涂覆在基板上的玻璃膜层上压花光成形结构来制造表面LSD。 两种类型的扩散器控制透射光的角度扩展，同时均匀化否则空间有噪声的光源，例如LCD和光纤光源，同时保持与任何玻璃光学元件一致的损伤阈值。 LSD透过物理光谱的紫外线波长和近红外线的传输效率超过90％。 此外，由于LSD是真正的玻璃，它能够承受远远超过塑料LSD的玻璃化转变温度的温度，可以通过常规的成型，研磨或抛光技术在凸面或凹面中形成，并且可以通过热 - 涂层技术。 LSD还具有非常高的激光功率阈值。

公开(公告)号：EP1000379A4

公开(公告)日：2006-04-19

申请号：EP98938266

申请日：1998-07-28

Applicant: PHYSICAL OPTICS CORP

Inventor： LIEBERMAN ROBERT A ,  MENDOZA EDGAR A ,  MINTZER DAVID

IPC: G02B5/02 ,  C03B8/02 ,  C03B19/12 ,  C03C17/02 ,  G02B5/32 ,  G03H1/00 ,  G03H1/02

CPC classification number: G02B5/0247 ,  C03B19/12 ,  C03C1/006 ,  C03C1/008 ,  C03C4/00 ,  C03C17/007 ,  C03C17/02 ,  C03C2204/08 ,  C03C2217/213 ,  C03C2218/113 ,  C03C2218/32 ,  G02B5/0252 ,  G02B5/0268 ,  G02B5/0278 ,  G02B5/32

Abstract: A holographic light shaping diffuser (LSD) is formed from a monolithic glass material by recording light shaping structures (sometimes collectively known as 'speckle', particularly when the structures extend into the interior of the diffuser) in the glass material during its formation. A volume LSD may be produced by the photolithographic writting or other imaging of light shaping structures in a photosentitive glass material, including the steps of providing a sol-gel solution (30), mixing (32) casting (34), gelling/aging (36), exposing (38), heating (40), and consolidating (42). Alternatively, a surface LSD may be produced by this imaging process or by embossing light shaping structures onto a high quality optical glass or by embossing a light shaping structures on a glass film layer coated onto a substrate. Both types of diffusers control the angular spread of transmitted light while homogenizing otherwise spatially noisy light sources such as LCDs and filamented light sources and while maintaining damage thresholds consistent with any glass optical element. The LSD has a transmission efficiency of over 90 % from the ultraviolet wavelengths through the physical spectrum and into the near-infrared. Moreover, because the LSD is a true glass, it is capable of withstanding temperatures well beyond glass transition temperatures of plastic LSDs, can be formed in convex or concave surfaces through conventional molding, grinding, or polishing techniques, and can be coated by hot-coating techniques. The LSD also has a very high laser power threshold.

公开(公告)号：EP1007917A4

公开(公告)日：2002-07-31

申请号：EP98936028

申请日：1998-07-23

Applicant: PHYSICAL OPTICS CORP

Inventor： LU TAIWEI ,  LIEBERMAN ROBERT A

IPC: G01J3/28 ,  A61B5/00 ,  A61B5/103 ,  A61B10/00 ,  G01B15/02 ,  G01J3/02 ,  G01N21/27 ,  G01N21/31 ,  G01N21/35 ,  G06F17/00 ,  G06F19/00

CPC classification number: A61B5/0059 ,  A61B5/411 ,  A61B5/445 ,  A61B5/7232 ,  A61B5/7264 ,  A61B5/7267 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0272 ,  G01J3/28 ,  G01N21/31 ,  G01N21/359 ,  G01N2021/3155 ,  G01N2201/1296 ,  G16H50/20 ,  Y10S706/924

Abstract: Systems and methods using a spectrometer system for real-time automatic evaluation of tissue injury are described. A method of assessing an injury to tissue comprises reflecting an electromagnetic signal from the tissue to produce a reflected electromagnetic signal; producing spectral data pertaining to the intensities of individual wavelengths of the reflected electromagnetic signal; analyzing the spectral data to obtain a set of results; and providing an indication of the nature of the injury to the tissue based upon the set of results.

公开(公告)号：AU5749701A

公开(公告)日：2001-11-12

申请号：AU5749701

申请日：2001-04-30

Applicant: PHYSICAL OPTICS CORP

Inventor： HO ZONH-ZEN ,  LIEBERMAN ROBERT A ,  SAVANT GAJENDRA D ,  JANNSON TOMASZ P ,  WANG ALLAN

IPC: B01L3/00 ,  G01N21/03 ,  G01N21/77 ,  G02B21/34 ,  G01N1/00 ,  G01N21/00 ,  G01N21/27 ,  G01N21/47