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    • 3. 发明授权
    • Apparatus and methods for making transmission holograms
    • 用于制作透射全息图的装置和方法
    • US5576853A
    • 1996-11-19
    • US360210
    • 1994-12-20
    • William J. MolteniMichael M. Wenyon
    • William J. MolteniMichael M. Wenyon
    • G03H1/04G03H1/20
    • G03H1/202G03H1/0248G03H2001/0413G03H2001/043G03H2001/2234G03H2222/36G03H2223/21
    • Apparatus and methods are provided for mass production of transmission holograms onto a continuous web of photosensitive material, one method involving the mounting of a master transmission hologram onto the outside surface of a clear hollow drum, the clear hollow drum being rotatable and having means for directing an irradiating wavefront propagated from a radiation source through the master transmission hologram onto a passing recording medium in a predetermined direction, the directing means configured so that said predetermined direction is fixedly maintainable independent of the rotation of the hollow drum and the master transmission hologram mounted thereon. The redirected irradiating wavefront transmitted through the master transmission hologram generates an object beam and a "zero order" reference beam, said object beam and "zero order" reference beam combine to form an interference pattern, the interference pattern being recorded on the photosensitive recording medium.
    • 提供了将传输全息图批量生产到感光材料的连续卷材上的装置和方法,一种方法涉及将主传播全息图安装在透明中空鼓的外表面上,该透明中空鼓可旋转并具有用于引导 照射波前从辐射源通过主传输全息图沿预定方向传播到通过的记录介质上,引导装置被配置成使得所述预定方向固定地保持独立于中空鼓和安装在其上的主传动全息图的旋转。 。 通过主传输全息图传输的重定向照射波前产生物体光束和“零级”参考光束,所述物体光束和“零级”参考光束组合形成干涉图案,干涉图案被记录在光敏记录介质上 。
    • 4. 发明授权
    • Holographic projection screen combining an elliptical holographic
diffuser and a cylindrical light-collimator
    • 全息投影屏幕组合椭圆全息漫射器和圆柱形光准直器
    • US5999281A
    • 1999-12-07
    • US145480
    • 1998-09-02
    • Lynore M. AbbottMichael M. Wenyon
    • Lynore M. AbbottMichael M. Wenyon
    • G03B21/62G02B5/32B32B31/00G02B5/02G02B21/60
    • G03B21/62
    • A projection screen having a construction well-suited for effecting lateral color constancy in rear screen projection display systems is disclosed. The projection screen includes a holographic transmission diffuser element capable of diffusing a beam of light into a horizontally-elliptical cone and a light-collimating element for uniaxially-collimating by transmission an expanding wavefront with the axis of collimation substantially orthogonal to a horizontal viewing axis. The use of the projection screen in a rear screen projection display system including red, green and blue image projectors is also disclosed. A method of manufacturing a holographic projection screen by drawing a holographic transmission diffuser web and a uniaxial light collimating web into overlapping relationship and bonding the webs is also disclosed.
    • 公开了一种投影屏幕,其具有非常适合于在后屏幕投影显示系统中实现侧向颜色恒定性的结构。 投影屏幕包括能够将光束扩散到水平椭圆锥体中的全息透射扩散器元件和用于单轴准直的光准直元件,用于通过基准垂直于水平视轴的准直轴的透射扩展波前。 还公开了在包括红色,绿色和蓝色图像投影仪的后屏幕投影显示系统中使用投影屏幕。 还公开了一种制造全息投影屏幕的方法,该全息投影屏幕通过将全息透射扩散器幅材和单轴光准直条带画成重叠关系并粘结该幅材。
    • 6. 发明授权
    • Transmission holographic diffuser made and used to effect lateral color
constancy in rear screen projection display systems
    • 透射全息漫射器用于在后屏幕投影显示系统中实现侧向颜色恒定
    • US5796499A
    • 1998-08-18
    • US808319
    • 1997-02-28
    • Michael M. Wenyon
    • Michael M. Wenyon
    • G02B5/02G02B5/32G03B21/10G03B21/62G03H1/02G03H1/04G03B21/56
    • G02B5/32G03B21/62
    • A projection screen is provided having a construction well-suited for effecting lateral color constancy in rear screen projection display systems. The inventive projection screen comprises a rigid light-transmissive faceplate and a homogenizing holographic transmission diffuser element proximate said faceplate. The holographic transmission diffuser element is made such that, upon illumination of an area of said diffuser element with a light beam having a wavelength of 400 nm to 700 nm, and impinging at an incident input angle of .+-.0.degree. to 30.degree. relative to normal incidence, said holographic transmission diffuser element produces in transmission a single diffuse output lobe, the diffuse output lobe produced in one area of said holographic transmission diffuser element having a relative angular intensity distribution and aspect ratio substantially identical to the relative angular intensity distribution and aspect ratio of diffuse output lobes produced in substantially all other areas of said holographic transmission diffuser element.
    • 提供具有非常适合于在后屏幕投影显示系统中实现侧向颜色恒定性的结构的投影屏幕。 本发明的投影屏幕包括刚性透光面板和靠近所述面板的均匀化全息透射扩散器元件。 全息透​​射漫射元件被制成使得当用波长为400nm至700nm的光束照射所述扩散器元件的区域时,并且相对于入射角为+/- 0°至30° 所述全息传输扩散器元件在透射中产生单个扩散输出波瓣,所述全息透射扩散器元件的一个区域中产生的扩散输出波瓣具有与相对角强度分布基本相同的相对角强度分布和纵横比, 在所述全息传播扩散器元件的基本上所有其他区域中产生的扩散输出叶片的纵横比。