公开(公告)号：USRE32054E

公开(公告)日：1985-12-24

申请号：US308850

申请日：1981-10-05

申请人： Even Mehlum

发明人： Even Mehlum

IPC分类号： E02B3/06 ,  E02B9/08 ,  F03B13/14

CPC分类号： E02B9/08 ,  E02B3/062 ,  F03B13/141 ,  Y02E10/38

摘要： An arrangement for concentrating sea waves, includes a grid-like structure of stopping and/or delaying elements adapted to influence the amplitude and/or phase of the waves and located in such positions in the water that the elements in interaction with the incident sea waves form an interference pattern which gives a concentration of the wave energy in a limited area (concentration area). When the wave energy is to be utilized for power production, the grid-like element structure is designed to give a concentration of the wave energy in a concentration area located in the short-range field of the element structure. Preferably the elements in the structure are mainly situated in front of the concentration area with respect to the dominant wave incident directions. Moreover, the element structure may have an extension (aperture) which is substantially larger than the wave length of the dominant waves at the location.

公开(公告)号：US4255066A

公开(公告)日：1981-03-10

申请号：US942497

申请日：1978-09-13

申请人： Even Mehlum

发明人： Even Mehlum

IPC分类号： E02B3/06 ,  E02B9/08 ,  F03B13/14

CPC分类号： E02B9/08 ,  E02B3/062 ,  F03B13/141 ,  Y02E10/38

摘要： An arrangement for concentrating sea waves, includes a grid-like structure of stopping and/or delaying elements adapted to influence the amplitude and/or phase of the waves and located in such positions in the water that the elements in interaction with the incident sea waves form an interference pattern which gives a concentration of the wave energy in a limited area (concentration area). When the wave energy is to be utilized for power production, the grid-like element structure is designed to give a concentration of the wave energy in a concentration area located in the short-range field of the element structure. Preferably the elements in the structure are mainly situated in front of the concentration area with respect to the dominant wave incident directions. Moreover, the element structure may have an extension (aperture) which is substantially larger than the wave length of the dominant waves at the location.

摘要翻译： 用于集中海浪的布置包括网格状结构，其停止和/或延迟适用于影响波浪振幅和/或相位的元件，并且位于水中的这些位置，使得元件与入射的海浪相互作用 形成在有限区域（浓度区域）中给出波能量的浓度的干涉图案。 当波能被用于发电时，格栅元件结构被设计成在位于元件结构的短距离场中的浓度区域中提供波能的集中。 优选地，结构中的元件主要位于相对于主波入射方向的浓度区域的前面。 此外，元件结构可以具有基本上大于该位置处的主波的波长的延伸（孔径）。

公开(公告)号：US4314739A

公开(公告)日：1982-02-09

申请号：US42510

申请日：1979-05-25

申请人： Even Mehlum ,  Odd Lovhaugen

发明人： Even Mehlum ,  Odd Lovhaugen

IPC分类号： G03H3/00

CPC分类号： G03H3/00 ,  G03H1/0005 ,  G03H1/2286 ,  G03H2001/2289 ,  G03H2001/261 ,  Y10S359/90

摘要： A new halographic method for converting one wave into another wave by means of a hologram is disclosed. This method comprises mixing an object wave with a reference wave whose wave front in the hologram plane is different from that of the actual reconstruction wave in the same plane. The phases and possibly also the amplitudes of these two wave fronts are combined in such a way that compensation is obtained for imaging errors caused by mutual inconsistencies between the wavelength ratio, the hologram scaling and the object scaling, and a displacement of the reconstructed object relative to the hologram. The reference wave and the reconstruction wave are chosen so that the converted object wave field becomes "as equal as possible" to a wave field coming from another but geometrically similar object at a different wavelength. In an example concerning seismic holography a formular for choosing a proper synthetic reference wave is given. The formula together with a computer program for acoustic wave propagation is used to compute the transmission function of a synthetic hologram, from which faithful optical reconstructions are obtained of simulated objects.

摘要翻译： 公开了一种通过全息图将一个波转换成另一个波的新的光晕方法。 该方法包括将物体波与全息图中的波前不同于同一平面中的实际重建波的参考波混合。 这两个波段的相位和可能的幅度被组合，使得获得用于由波长比，全息图缩放和物体缩放之间的相互不一致引起的成像误差的补偿，以及重建对象相对的位移 到全息图。 选择参考波和重建波，使得转换的物体波场变得与来自另一个但几何相似的物体在不同波长处的波场“尽可能相等”。 在一个关于地震全息术的例子中，给出了一个用于选择合适的合成参考波的公式。 该公式与声波传播的计算机程序一起用于计算合成全息图的传输函数，从中获得仿真对象的忠实光学重建。