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    • 2. 发明申请
    • RANDOMISED MASK FOR A DIFFUSING SCREEN
    • 用于扩展屏幕的随机掩码
    • WO1994029768A1
    • 1994-12-22
    • PCT/GB1994001281
    • 1994-06-14
    • DURAND LIMITEDJOHNSON, William, Nevil, HeatonPHILLIPS, Nicholas, John
    • DURAND LIMITED
    • G03B21/62
    • G03B21/62
    • A mask through which a sheet or layer of a photopolymerisable monomer can be exposed to polymerising light is manufactured by placing a fibre optic plate (14), or a ground glass plate or the equivalent over the emulsion layer (12) of a photographic plate (10) and exposing the photographic emulsion, through the fibre optic plate or ground glass plate, by a laser beam (22) scanned across the plate in a raster. By this technique, there is produced, over the photographic plate, a random speckle pattern of substantially the same density and intensity over the whole plate. The photographic plate is then developed and used as a master to produce "daughter" masks from glass plates having an opaque thin layer of metallic chromium on one side, by coating such thin layer with photoresist, using the master to record, by direct contact printing, the speckle pattern on the photoresist, treating the photoresist to remove it from the regions corresponding to the speckles and etching the plate bearing the chromium layer and resist coating to remove the chromium from the regions from which the resist has been removed to form light transmitting apertures corresponding to these regions. Diffusion screens produced using a mask formed in this way incorporate sufficient randomness in the distribution of the light-modifying features thereon to avoid diffraction effects and to avoid Moiré effects when used in conjunction with video displays which comprise regular arrays of phosphor dots or of pixels.
    • 将可光聚合单体的片层或层可暴露于聚合光的掩模通过将光纤板(14)或磨碎的玻璃板或等同物放置在照相板的乳液层(12)上来制造 10),并通过光栅或研磨玻璃板通过在光栅中跨过该板扫描的激光束(22)曝光照相乳剂。 通过这种技术,在照相板上产生了在整个板上具有基本相同的密度和强度的随机散斑图案。 然后将照相板显影并用作母体,通过使用主体通过直接接触印刷来涂覆具有光致抗蚀剂的这种薄层,从而在一侧具有不透明的金属铬薄层的玻璃板产生“子”掩模 ,光刻胶上的斑点图案,处理光致抗蚀剂以将其从对应于斑点的区域中移除,并蚀刻带有铬层的板,并抗蚀涂层以从去除抗蚀剂的区域去除铬以形成光透射 对应于这些区域的孔。 使用以这种方式形成的掩模产生的扩散屏幕在其上的光修饰特征的分布中包含足够的随机性,以避免衍射效应,并且当与包括磷光体点或像素的规则阵列的视频显示器结合使用时避免莫尔效应。
    • 3. 发明申请
    • SEEING AID FOR BLIND AND PARTIALLY-SIGHTED PERSONS
    • 寻求盲人和部分被告人
    • WO1994016424A1
    • 1994-07-21
    • PCT/GB1994000063
    • 1994-01-12
    • DURAND LIMITEDJOHNSON, William, Nevil, Heaton
    • DURAND LIMITED
    • G09B21/00
    • G09B21/008
    • A seeing aid for blind or partially sighted persons includes a viewing device comprising a frame or support (10) adapted to be worn on the user's head and supporting, so as to be in front of the user's eyes, or one of the user's eyes, imaging display means (12, 20) such as an LCD screen for presenting or reproducing a visual image and an associated optical system (14, 16) whereby there may be presented to the user's view an image presented or reproduced by the display means (12, 20). Associated with the visual display means (12, 20) is a video-camera device (11) mounted on the support (10). The arrangement is such that in the image presented to the eye by the viewing device (12, 20) the intensity of illumination and/or the visual contrast is substantially greater than in the corresponding image captured by the video-camera.
    • 用于盲人或部分瞄准者的视力辅助装置包括观察装置,其包括适于佩戴在使用者头部上的支架(10),并且支撑在使用者的眼睛前方或使用者的眼睛之一中, 诸如用于呈现或再现视觉图像的LCD屏幕的成像显示装置(12,20)和相关联的光学系统(14,16),由此可以向用户的视图呈现由显示装置(12)呈现或再现的图像 ,20)。 与视觉显示装置(12,20)相关联的是安装在支撑件(10)上的摄像机装置(11)。 该配置使得在由观看设备(12,20)呈现给眼睛的图像中,照明强度和/或视觉对比度显着大于由摄像机拍摄的相应图像。
    • 4. 发明申请
    • DISPENSER FOR DEODORANTS OR THE LIKE
    • 除臭剂或类似物的分配器
    • WO1996004941A1
    • 1996-02-22
    • PCT/GB1995001694
    • 1995-07-18
    • DURAND LIMITEDJOHNSON, William, Nevil, Heaton
    • DURAND LIMITED
    • A61L09/12
    • A61L9/14A61L9/12
    • A device for distributing a deodorising, fragrancing, insecticidal or the like product is arranged to be activated by opening and closing a room door. In one embodiment, the device comprises a spring plastics bracket (10) clipped to the bottom of a door and carrying spring clips (16) supporting for rotation a hollow plastics roller (20) containing a solid deodorant, fragrancing compound or insecticide, and having apertures in its wall to allow vaporised deodorant or the like to escape. The dispersal of the deodorant, fragrance or the like is promoted every time the door is opened and closed and so the rate of use of the deodorant, fragrancer or insecticide is appropriately related to room use.
    • 用于分配除臭,香料,杀虫剂等产品的装置被布置成通过打开和关闭房间门而被激活。 在一个实施例中,该装置包括一个弹簧塑料托架(10),该弹簧塑料支架(10)夹在门的底部并且承载弹簧夹(16),该弹簧夹(16)支承用于旋转包含固体除臭剂,香料化合物或杀虫剂的中空塑料辊(20) 其壁中的孔允许蒸发的除臭剂等逸出。 每次打开和关闭门时,都能促进除臭剂,香料等的分散,所以除臭剂,香料或杀虫剂的使用率与室内使用有关。