Since Japan is becoming aging society, many kinds of autonomous robots are expected as labor instead of human being. Their power source is battery because they are required the wide movable area. Therefore the high efficiency charging system will be more important equipment than now. The major styles are "wireless charge type" and "automatic charge type". The first type is not suitable for high power charge. The other type is better than first one but it is important whether the battery is charged correctly or not. If the new type system exists, which can charge just only touching the robots on its certain area without regard to position, these problems would not only solve but also be applied for temporary charge terminal which can use in the contaminated area by radiation or disaster area.In this study, as one of the method to solve these, we will show the principle of contact-type charger which can use without regard to position and how to design of expendable electrodes.

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In most cases, the distribution of an object can be calculated by measuring its Fourier transform distribution. When a general laser wave plane is used, the measurement of Fourier transform distribution has a large error because of the digitizing of Fourier amplitude. In this study, we suggest a method to generate a laser light distribution with pseudo random phase that can reduce the error of Fourier amplitude.

In this paper, we describe the simulation results of improving the resolution of the reconstructed image using the phase freedom in the original image in the Fourier transform amplitude hologram. Since the thing that is recorded in the amplitude hologram is the amplitude information, the phase of the original image is possible to arbitrarily specify. Utilizing the phase freedom can reconstruct an image more clearly by reducing the error of reconstructed image. Therefore, we can expected to improve the resolution of the reconstructed image.