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    • 1. 发明授权
    • Optical device for pilot's visor comprising a tubular mirror
    • 用于飞行员遮阳板的光学装置,包括管状反射镜
    • US06356393B1
    • 2002-03-12
    • US09622591
    • 2000-08-21
    • Laurent PotinLaurent Bignolles
    • Laurent PotinLaurent Bignolles
    • G02B2714
    • G02B27/0172G02B2027/011
    • An optical device for a system presenting collimated images using a spherical mirror. The optical device makes it possible to present the user with an image corrected of off-centring distortion of a second kind due to an off-axis spherical mirror. In order to do this the optical device includes a tubular mirror whose optical characteristics ensure a high-quality image and correction of the off-centering distortion. The tubular mirror has a surface generated by the translation of a plane curve (a circular arc) along another plane curve (also a circular arc). The optical device is especially applicable to helmet sights for an aircraft pilot.
    • 一种用于使用球面镜呈现准直图像的系统的光学装置。 光学装置使得可以向用户呈现由于离轴球面镜而被校正为第二种偏心失真的图像。 为了做到这一点,光学装置包括管状反射镜,其光学特性确保了高质量的图像和偏心失真的校正。 管状反射镜具有通过沿着另一平面曲线(也是圆弧)的平面曲线(圆弧)的平移而产生的表面。 光学装置特别适用于飞机驾驶员的头盔瞄准具。
    • 3. 发明授权
    • Optical device for helmet visor comprising a Mangin mirror
    • 头盔遮阳板的光学装置,包括一个Mangin镜
    • US06262849B1
    • 2001-07-17
    • US09509538
    • 2000-04-10
    • Laurent PotinLaurent Bignolles
    • Laurent PotinLaurent Bignolles
    • G02B2714
    • G02B27/0172G02B2027/011
    • An optical device for a system for the presentation of collimated images by a non-plane mirror, which makes it possible to present a user with an image corrected of distortion due to a non-plane mirror and exhibiting good resolution. To do this, the device includes a Mangin type mirror whose optical characteristics ensure good image quality of correction of off-centering distortion and good image sharpness. The Mangin type mirror has a reflecting surface and a layer of refracting material defining a refracting surface. One surface may be spherical, and the other aspherical. The surfaces may also be aspherical. One aspherical surface may be a paraboloid, an ellipsoid, or a torus. The refracting material can exhibit an optical index varying according to the position on the surface of the mirror. The device may be applied in particular to a system for the presentation of collimated images by a spherical mirror inclined with respect to the direction from which it is observed. The Mangin type mirror then corrects the off-centering distortion of the second kind due to this off-axis spherical mirror. The device may be applied in particular to helmet viewfinders for an aircraft pilot.
    • 一种用于通过非平面镜呈现准直图像的系统的光学装置,其使得可以向用户呈现由于非平面镜而导致的失真校正的图像并且表现出良好的分辨率。 为了做到这一点,该装置包括一个Mangin型反射镜,其光学特性确保校正偏心失真和良好图像清晰度的良好图像质量。 Mangin型镜具有反射表面和限定折射表面的折射材料层。 一个表面可以是球形的,而另一个表面可以是球形的。 表面也可以是非球面的。 一个非球面可以是抛物面,椭球或圆环。 折射材料可以表现出根据反射镜表面上的位置而变化的光学折射率。 该装置可以特别地应用于通过相对于观察方向倾斜的球面镜来呈现准直图像的系统。 然后,Mangin型镜由于该离轴球面镜来校正第二种偏心失真。 该装置可以特别用于飞行员飞行员的头盔取景器。
    • 4. 发明授权
    • Optical device for helmet visor comprising a diffractive mirror
    • 包括衍射镜的头盔遮阳板用光学装置
    • US06788442B1
    • 2004-09-07
    • US09806936
    • 2001-04-06
    • Laurent PotinLaurent Bignolles
    • Laurent PotinLaurent Bignolles
    • G03H100
    • G02B27/0172
    • An optical device for a system presenting collimated images through an off-axis spherical concave mirror. An image can be presented to a user with correction of eccentric distortion caused by the off-axis spherical concave mirror without altering the quality of the image. A diffractive mirror is set in the neighborhood of an intermediate image, and preferably a second intermediate image. The extent of the neighborhood is limited by image resolution and, in the neighborhood, the correction by the diffractive mirror does not alter the resolution. The diffractive mirror may include a hologram which may be digital or made of a photosensitive material. A hologram substrate is preferably not planar to operate partly upon the correction, the residual correction being carried out by the hologram. Such a device may find application to an aircraft pilot's visor.
    • 一种用于通过离轴球面凹面镜呈现准直图像的系统的光学装置。 可以向使用者呈现由离轴球面凹面镜引起的偏心变形校正而不改变图像质量的图像。 衍射镜设置在中间图像附近,优选地设置为第二中间图像。 邻域的范围受图像分辨率的限制,并且在附近,衍射镜的校正不会改变分辨率。 衍射镜可以包括可以是数字的或由感光材料制成的全息图。 优选地,全息图基板不是平面的,部分地在校正时进行操作,所以残余校正由全息图进行。 这样的装置可以应用于飞机驾驶员的遮阳板。
    • 6. 发明授权
    • Angle of view of a LCD screen by a novel birefringent film stacking
    • 通过新型双折射膜堆叠的液晶显示屏的视角
    • US06587171B1
    • 2003-07-01
    • US09744668
    • 2001-01-29
    • Laurent GeorgesLaurent Bignolles
    • Laurent GeorgesLaurent Bignolles
    • G02N11376
    • G02F1/133632G02F1/13363G02F1/133634
    • The present invention relates to a display device with a liquid-crystal cell comprising a twisted nematic liquid-crystal layer (40) placed between two crossed polarizers (46, 48) and comprising, between the liquid-crystal layer and at least one of the polarizers, a structure for compensating for the variations in contrast of the cell according to the angle of observation. This structure comprises at least two superposed negative uniaxial media such that the extraordinary optical axis of one medium (44, 42) is parallel to the normal to the cell and that of the other medium (43, 41) is inclined with respect to this normal on the one hand and with respect to the plane of the cell on the other. This compensating structure includes an additional layer (50, 49) of a positive uniaxial birefringent material.
    • 本发明涉及具有液晶单元的显示装置,该液晶单元包括位于两个交叉偏振器(46,48)之间的扭曲向列型液晶层(40),并且包括液晶层和至少一个 偏振器,用于根据观察角度补偿细胞的对比度的变化的结构。 该结构包括至少两个叠加的负单轴介质,使得一个介质(44,42)的非常光轴平行于电池的法线,而另一个介质(43,41)的非常光轴相对于该正常 一方面和另一方面相对于电池的平面。 该补偿结构包括正单轴双折射材料的附加层(50,49)。
    • 7. 发明授权
    • Compact optical architecture for wide-field helmet-mounted display
    • 紧凑的光学架构,适用于广泛的头戴式显示器
    • US06747802B2
    • 2004-06-08
    • US10142995
    • 2002-05-13
    • Laurent BignollesJoel Baudou
    • Laurent BignollesJoel Baudou
    • G02B2714
    • G02B27/0172G02B2027/0132
    • A compact optical architecture for a wide-field helmet-mounted display includes a one-piece visor and optical relay to convey said the image between an image source and the visor. The visor is formed by a surface generated by revolution having an axis of revolution (&Dgr;) parallel to the ocular axis (&Dgr;oc) and substantially contained in the sagittal plane of the pilot, at the level of the forehead. The optical relay includes a forehead-mounted mirror that is not planar, having an axis of revolution (&Dgr;) that is the same as the axis of revolution (&Dgr;) of the visor, its geometrical parameters being computed in such a way that the envelope of the useful beams propagated between the forehead-mounted mirror and the first beam-formation device of the optical relay upstream from the forehead-mounted mirror are substantially contained in a cylinder with a section substantially equal to the useful surface of the mirror. Such a device may find particular use with wide-field helmet-mounted display for aircraft or helicopter pilots.
    • 用于大面积头盔安装显示器的紧凑型光学架构包括一体式遮阳板和光学继电器,以在图像源和遮阳板之间传送图像。 遮阳板由旋转生成的表面形成,该表面具有平行于眼轴(Deltaoc)的旋转轴线(Delta),并且在前额的水平处基本上包含在飞行员的矢状平面中。 光学继电器包括不是平面的前额安装的反射镜,其具有与遮阳板的旋转轴(Delta)相同的旋转轴(Delta),其几何参数以这样的方式计算: 在前额安装的反射镜和光学继电器的第一光束形成装置之间传播的有用的光束从前额安装的反射镜的上游基本上容纳在具有基本上等于反射镜的有用表面的部分的圆柱体中。 这样的装置可以用于飞机或直升机飞行员的大面积头盔安装显示器。
    • 9. 发明授权
    • Head-up display adaptable to given type of equipment
    • 平视显示适应给定类型的设备
    • US06813086B2
    • 2004-11-02
    • US10013690
    • 2001-12-13
    • Laurent BignollesJean-Marc DarrieuxYannick Chevreau
    • Laurent BignollesJean-Marc DarrieuxYannick Chevreau
    • G02B2714
    • G02B27/0101
    • A head-up display including a combiner and a relay optics formed from a combination of optical elements and forming an intermediate image projected to infinity by the combiner of a symbology emitted in a given spectral band by an image source. The combiner forms an off-axis convergent mirror in the spectral band, and an angle of inclination of the off-axis convergent mirror is adjustable for a given type of equipment as a function of a position of the image source and in a given angular range that depends on the type of equipment. The relay optics is modular and includes a first module with at least one optical element fixed regardless of the type of equipment and a second module with at least one optical element for which a position is predefined as a function of an angular position of the combiner.
    • 一种平视显示器,包括由光学元件的组合形成的组合器和中继光学器件,并且通过由图像源在给定光谱带中发射的符号系统的组合器形成投影到无限远的中间图像。 组合器在光谱带中形成离轴会聚反射镜,并且对于给定类型的设备,离轴会聚反射镜的倾斜角度可根据图像源的位置和给定的角度范围而变化 这取决于设备的类型。 中继光学器件是模块化的,并且包括具有固定的至少一个光学元件的第一模块,而不管设备的类型如何,以及具有至少一个光学元件的第二模块,其中位置被预先定义为组合器的角位置的函数。