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    POLARIZATION INDEPENDENT BIREFRINGENT TUNABLE FILTERS
    1.
    发明申请
    POLARIZATION INDEPENDENT BIREFRINGENT TUNABLE FILTERS 审中-公开
    极化独立的双向滤波器

    公开(公告)号：WO2008068753A3

    公开(公告)日：2009-09-03

    申请号：PCT/IL2007001497

    申请日：2007-12-04

    Applicant: UNIV BEN GURION ,  ABDULHALIM IBRAHIM

    Inventor： ABDULHALIM IBRAHIM

    IPC: G02B27/28

    CPC classification number: G02B6/29361 ,  B82Y20/00 ,  G02B5/3083 ,  G02B6/272 ,  G02B6/2766 ,  G02B6/2793 ,  G02B6/29302 ,  G02B6/29358 ,  G02B6/29395 ,  G02B6/29397

    Abstract: Novel, polarization-insensitive, birefringent tunable filter arrangements that allow high throughput and which are broadband. The filters are based on a combination of tunable birefringent layers or polarization dependent filters, in combination with one or more of the following components (i) thin film achromatic quarter waveplates based on the form birefringence of dielectric subwavelength grating structures, (ii) nano wire-grid polarizers made of metallic wire grids; (iii) omnidirectional dielectric mirrors, (iv) polarization conversion mirrors, and (v) reflective polarized beam splitters for circularly polarized light. All of these components may be implemented in thin film form on one or more substrates, such that a particularly compact and cost effective filter can be produced. The birefringent layers can be any birefringent or magneto-optic layer but especially liquid crystals. The use of novel polarization conversion disposition of the components of the filter results in a filter having high throughput.

    Abstract translation: 新型的偏振不敏感双折射可调滤波器布置，允许高吞吐量和宽带。 滤波器基于可调谐双折射层或偏振相关滤光器的组合，与以下组件中的一个或多个组合（i）基于介电亚波长光栅结构的双折射的薄膜无彩色四分之一波片，（ii）纳米线 由金属丝网制成的格栅偏光片; （iii）全向电介质反射镜，（iv）偏振转换镜和（v）用于圆偏振光的反射偏振分束器。 所有这些部件可以在一个或多个基板上以薄膜形式实现，使得可以产生特别紧凑且成本有效的过滤器。 双折射层可以是任何双折射或磁光层，但特别是液晶。 使用过滤器的组件的新颖的偏振转换配置产生具有高生产量的过滤器。

    OPTICAL SENSOR WITH ENHANCED SENSITIVITY
    3.
    发明申请
    OPTICAL SENSOR WITH ENHANCED SENSITIVITY 审中-公开
    具有增强灵敏度的光学传感器

    公开(公告)号：WO2012111001A3

    公开(公告)日：2012-11-01

    申请号：PCT/IL2012000075

    申请日：2012-02-14

    Applicant: UNIV BEN GURION ,  ABDULHALIM IBRAHIM

    Inventor： ABDULHALIM IBRAHIM

    IPC: G01N21/00

    CPC classification number: G01N21/658 ,  G01N21/554 ,  G01N33/54373

    Abstract: The invention is a surface plasmon resonance (SPR) sensor to determine the presence and quantity of biological or chemical entities in an analyte. The sensor comprises a metal periodic structure deposited as a thin layer of a noble metal, comprising a one dimensional array of nanoslits or a two dimensional array of nanoholes on a transparent dielectric substrate, a nm-thick layer of transparent dielectric protection layer on top of the metal periodic structure and a functionalization layer, which acts as a binding layer to biological or biochemical entities in an analyte that is in contact with the functionalization layer. The sensor of the invention has the following properties: the spaces perforated in the metal are at least partially filled by a material with a refractive index as dose as possible to that of the substrate; the thickness of the metal layer is no more than 10Onm.

    Abstract translation: 本发明是一种表面等离子体共振（SPR）传感器，用于确定分析物中生物或化学实体的存在和数量。 传感器包括沉积为贵金属薄层的金属周期性结构，其包括在透明电介质基底上的纳米级的一维阵列或纳米孔的二维阵列，在透明电介质基底顶上的纳米厚的透明介电保护层 金属周期结构和官能化层，其作为与官能化层接触的分析物中的生物或生物化学实体的结合层。 本发明的传感器具有以下性质：金属中穿孔的空间至少部分地由具有尽可能的折射率的材料填充到衬底的材料; 金属层的厚度不大于100nm。

    An optical device capable of responding to a writing long-wave radiation
    4.
    发明专利
    An optical device capable of responding to a writing long-wave radiation 未知

    公开(公告)号：IL282047D0

    公开(公告)日：2021-05-31

    申请号：IL28204721

    申请日：2021-04-04

    Applicant: ABDULHALIM IBRAHIM ,  ABDULHALIM HISHAM

    Inventor： ABDULHALIM IBRAHIM ,  ABDULHALIM HISHAM

    Abstract: The present invention relates to an optical imaging device capable of responding to a writing long-wave radiation (w) emitted by any object or scene. Said device is configured to operate in reflection mode or in transmission mode and comprises a reading light unit (2), writing light unit (4), resonant optically-addressed spatial light modulator (ROASLM) (3) with an optically-responsive resonant structure (ORRS) (100) and a detector (40), wherein said (ORRS) (100) comprises: a photosensitive layer (101) deposited on a transparent substrate for absorbing the writing radiation (w) in a form of the long-wave image of the object or scene (1) and transforming said image into the stimulating signal across the ORRS (100), optical layers (102) for inducing resonance effect to the stimulating signal formed in the ORRS (100), optional alignment layers (103) for aligning liquid crystal molecules, and the conversion layer (104) for converting the resonant long-wave image of the object or scene (1) into a visible-range image.

    Multi-spectral polarimetric variable optical device and imager
    5.
    发明专利
    Multi-spectral polarimetric variable optical device and imager 未知

    公开(公告)号：IL252256D0

    公开(公告)日：2017-07-31

    申请号：IL25225617

    申请日：2017-05-11

    Applicant: ABDULHALIM IBRAHIM

    Inventor： ABDULHALIM IBRAHIM

    IPC: G01N20060101

    Abstract: A system is described that combines spectropolarimetry with scatterometry. The system uses an annular mirror and liquid crystal devices to control the angle of the incident light cone, the polarization and wavelength, an imaging setup and one or more video cameras so that spectroscopic-polarimetric-scatterometric images can be grabbed rapidly. The system is also designed to incorporate additional imaging modes such as interference, phase contrast, fluorescence and Raman spectropolarimetric imaging.

    Spectral and phase modulation tunable birefringence devices
    8.
    发明专利
    Spectral and phase modulation tunable birefringence devices 未知

    公开(公告)号：IL273042D0

    公开(公告)日：2020-04-30

    申请号：IL27304220

    申请日：2020-03-03

    Applicant: ABDULHALIM IBRAHIM

    Inventor： ABDULHALIM IBRAHIM

    IPC: G02B20060101

    Abstract: The present invention describes a liquid crystal composite tunable device for fast polarisation-independent modulation of an incident light beam comprising: (a) two supporting and functional panels, at least one of them coated with a transparent conductive electrode layer and with optionally at least one additional layer selected from an alignment layer, antireflective coating layer, thermochromic or electrochromic layer, photoconductive or photosensitive layer, and (b) a composite structure sandwiched between said two panels and made of a liquid crystal and porous microparticles infiltrated with said liquid crystal. The porous microparticles have an average refractive index approximately equals to one of the liquid crystal principal refractive indices, matching that of the liquid crystal at one orientational state (for example, parallel n∥), and exhibiting large mismatch at another orientational state (for example, perpendicular n⊥). This refractive index mismatch between said microparticles and said liquid crystal is tuned by applying an external electric or magnetic field, thermally or optically.

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