公开(公告)号：US5444441A

公开(公告)日：1995-08-22

申请号：US182044

申请日：1994-05-18

Applicant: Philip Sutton

Inventor： Philip Sutton

IPC: G01J3/46 ,  G01S7/497 ,  G01S17/89 ,  G06T1/00 ,  H04B13/02 ,  G01J3/00 ,  G01S13/00

CPC classification number: G01S7/497 ,  G01S17/89

Abstract: An electro-optical detection system for detecting objects 12 embedded within a partially transmitting medium comprises means 20 to receive electro-magnetic radiation in two close spectral channels 28, 212: a signal channel 212 where the wavelength and bandwidth of the signal channel are optimized to correspond to the peak of transmission of the medium and a reference channel 28 where the wavelength and bandwidth are selected to correspond to a spectral region where attenuation in the medium is high. The signal and reference channels are then subtracted (213) so as to remove the effect of reflected radiation from the signal channel 212. The signal is processed digitally (218) to provide an enhanced image of the field of view. In a particular arrangement for detecting objects underwater a CCD TV camera 20 is used with three separate CCD detector arrays providing concurrent red (R), green (G), blue (B) output signals. The green and blue signals are combined in an adjustable ratio to provide the image signal to match the prevailing conditions of the partially transmitting sea. A notch filter is employed to cut out light in a spectral band between the signal and reference channels.

Abstract translation: PCT No.PCT / GB92 / 01242 Sec。 371日期：1994年5月18日 102（e）日期1994年5月18日PCT提交1992年7月9日PCT公布。 公开号WO93 / 02367 日期：1993年2月4日。用于检测嵌入在部分传输介质中的物体12的电光检测系统包括用于在两个近光谱通道28,212中接收电磁辐射的装置20：信号通道212，其中波长和带宽 信号通道的优化对应于介质的传输峰值和参考通道28，其中选择波长和带宽以对应于介质中的衰减高的光谱区域。 然后减去信号和参考通道（213），以消除来自信号通道212的反射辐射的影响。信号被数字地处理（218）以提供视场的增强图像。 在用于水下检测物体的特定布置中，CCD电视摄像机20与三个独立的CCD检测器阵列一起使用，其提供并发红（R），绿（G），蓝（B）输出信号。 绿色和蓝色信号以可调节的比例组合，以提供图像信号以匹配部分传播海域的主要条件。 采用陷波滤波器来切割信号和参考信道之间的频谱带中的光。

公开(公告)号：US4991963A

公开(公告)日：1991-02-12

申请号：US424094

申请日：1989-09-21

Applicant: Philip Sutton

Inventor： Philip Sutton

IPC: G01J3/18 ,  G01J9/02

CPC classification number: G01J9/0215 ,  G01J2009/0288 ,  G01J2009/0296 ,  G01J3/18

Abstract: A wavelength-independent-interferometer comprises means to receive light (10) from a field of view, means (BS1) to separate the light into two beams (11, 12), means (BS2) to combine the two beams, and dispersive means (30) interposed in the path (12) of one of the two beams to produce a wavelength-dependent shear. The dispersive means may be a transmission diffraction grating or a reflection grating. In the arrangement shown the optical elements are combined in a modified Mach-Zehnder interferometer. When the conventional Mach-Zehnder interferometer is illuminated with coherent light the separation of interference fringes produced in the interference plane is inversely proportional to the wavelength. By introducing a dispersive element in the invention the detector is sensitized to a pre-determined fringe separation. A moveable reticle is placed in front of a detector to sensitize the detector to the fringe pattern.

Abstract translation: 波长无关干涉仪包括从视野接收光（10）的装置，用于将光分离成两个光束（11,12）的装置（BS1），组合两个光束的装置（BS2）和分散装置 （30）插入在两个光束中的一个光束的路径（12）中以产生依赖于波长的剪切。 分散装置可以是透射衍射光栅或反射光栅。 在所示的布置中，光学元件组合在改进的马赫 - 曾德尔干涉仪中。 当传统的马赫 - 曾德干涉仪用相干光照射时，在干涉平面中产生的干涉条纹的分离与波长成反比。 通过在本发明中引入分散元件，检测器对预定的边缘分离敏化。 将可移动的掩模版放置在检测器的前面，以使检测器对条纹图案敏感。