公开(公告)号：WO1996036893A1

公开(公告)日：1996-11-21

申请号：PCT/SE1996000639

申请日：1996-05-15

Applicant: ABRAMSON, Nils, Hugo, Leopold

IPC: G02B05/28

CPC classification number: G02B27/4277 ,  G02B5/284

Abstract: A device is disclosed which, using destructive interference, stops coherent light from lasers but lets through incoherent light. The device comprises four identical gratings (G1, G2, G3, G4). A part of a parallel laser light beam at an entering position (A) is diffracted by the gratings. Another part of the beam passes right through the gratings and interferes with the diffracted beam at an exiting position (B). Regardless of the laser light wavelength, symmetry will make the undiffracted and the diffracted beams meet at the fourth grating (G4) under the same angle as they left the first grating (G1). Thus destructive interference can occur at the fourth grating (G4) across the entire beam width.

Abstract translation: 公开了一种使用相消干涉来阻止来自激光器的相干光，但通过非相干光的装置。 该装置包括四个相同的光栅（G1，G2，G3，G4）。 入射位置（A）处的平行激光束的一部分被光栅衍射。 光束的另一部分直接通过光栅，并在出射位置（B）处干涉衍射光束。 不管激光波长如何，对称性将使衍射光束和第四光栅（G4）以与它们离开第一光栅（G1）相同的角度相遇。 因此，在整个波束宽度处的第四光栅（G4）处可发生相消干涉。

公开(公告)号：WO1996007114A1

公开(公告)日：1996-03-07

申请号：PCT/AU1995000551

申请日：1995-08-30

Applicant: PHOTONIC TECHNOLOGIES PTY. LTD. ,  BETTS, Ralph, Alexander ,  FRISKEN, Steven, James ,  WONG, Danny, Wai-Boown

Inventor： PHOTONIC TECHNOLOGIES PTY. LTD.

IPC: G02B05/28

CPC classification number: G02B6/2935 ,  G02B5/284 ,  G02B6/29395 ,  G02B2006/12109

Abstract: An optical filter, comprising a first optical waveguide (3), a second optical waveguide (6) and means for expanding light from first optical waveguide into a beam (4), and at least one optical flat (1) inserted partially into the beam so that a fraction of the light passes through each optical flat (1) and a means for focussing the light into the second optical waveguide (7). In its simplest form the device has a Mach-Zehnder (sinusoidal) transmission characteristic. The filter can be tuned both in wavelength and extinction either mechanically or electrically. More complex (non-sinusoidal) characteristics can also be obtained. A number of implementations are disclosed.

Abstract translation: 一种滤光器，包括第一光波导（3），第二光波导（6）和用于将来自第一光波导的光扩展成光束（4）的装置，以及至少一个光学平面（1），部分地插入光束 使得一部分光通过每个光学平面（1）和用于将光聚焦到第二光波导（7）中的装置。 在其最简单的形式中，该装置具有马赫 - 曾德尔（正弦）传输特性。 滤波器可以在波长和消光之间进行机械或电气调节。 也可以获得更复杂（非正弦）特性。 公开了许多实现。

公开(公告)号：WO1994004952A1

公开(公告)日：1994-03-03

申请号：PCT/US1993006791

申请日：1993-07-20

Applicant: PPG INDUSTRIES, INC.

Inventor： PPG INDUSTRIES, INC. ,  SMITH, Robert, A. ,  VAN GEMERT, Barry

IPC: G02B05/28

CPC classification number: G02B5/23 ,  C08K5/09 ,  C08K5/357 ,  C08L33/04

Abstract: Described is a photochromic composition which is a polymerizate of acrylate monomer(s), a cross-linking amount of anhydrous acrylic anhydride and/or anhydrous methacrylate anhydride and a photochromic amount of pyrido benzoxazine. Depending on the amount of cross-linking agents and the other components selected to form the polymerizate, the polymerizate will exhibit improved temperature stability with regard to photocolorability and/or prevention of activation in sunlight.

Abstract translation: 描述了一种光致变色组合物，其是丙烯酸酯单体的聚合物，交联量的无水丙烯酸酐和/或无水甲基丙烯酸酐酐和光致变色量的吡啶并苯并嗪。 根据选择形成聚合物的交联剂和其它组分的量，聚合物将在光可着色性和/或防止阳光中的活化方面表现出改善的温度稳定性。

公开(公告)号：WO1994004951A1

公开(公告)日：1994-03-03

申请号：PCT/GB1993001700

申请日：1993-08-11

Applicant: LIGHT & SOUND DESIGN LIMITED ,  OWEN, Keith, James

Inventor： LIGHT & SOUND DESIGN LIMITED

IPC: G02B05/28

CPC classification number: G02B5/285 ,  F21S10/007 ,  F21S10/02 ,  F21V9/40 ,  F21W2131/406

Abstract: A transparency intended for use in a high intensity light beam projector for stage lighting purposes, comprises a glass substrate (10) having selected areas (11) thereof coated with a multi-layer dielectric coating forming a dichroic colour filter. Selective coating is effected either by removing parts of an overall multi-layer coating through a mask, or by applying the multi-layer coating selectively through a mask.

Abstract translation: 旨在用于舞台照明目的的高强度光束投影仪中的透明度包括具有选择的区域（11）的玻璃基板（10），其被涂覆有形成二向色滤色器的多层电介质涂层。 通过通过掩模去除整个多层涂层的部分或通过选择性地通过掩模施加多层涂层来实现选择性涂层。

公开(公告)号：WO1990008967A1

公开(公告)日：1990-08-09

申请号：PCT/SU1989000032

申请日：1989-02-03

Applicant: TOMSKY GOSUDARSTVENNY UNIVERSITET IMENI ...

Inventor： TOMSKY GOSUDARSTVENNY UNIVERSITET IMENI ... ,  ELISEEV, Alexandr Alexeevich ,  POPOVA, Tamara Nikolaevna ,  RAVODINA, Olga Viktorovna ,  STENINA, Violetta Vasilievna

IPC: G02B05/28

CPC classification number: G02B5/287 ,  G02B5/289

Abstract: A light filter has a laminated structure (1) whose layers (2-5) have a reflective capacity for directed light radiation (17) and are arranged equidistantly, with their refractive index gradually changing throughout the depth. The layers (2-5) are obtained by subjecting to fixed-wave length monochromatic radiation (6) an element made of a light-sensitive material transparent to said radiation and placed in front of a mirror (9) only during radiation. In an optical device a selecting element consists of said light filter (68) mounted rotatably in relation to the light radiation (17) directed on it.