Abstract: A monitoring apparatus according to the present invention has an image taking section which captures images of a plurality of image capturing areas, a detecting section which detects an object to be monitored based on an image obtained by the image taking section, a command receiving section which receives a command for remote control, and a command executing section which executes a process corresponding to the received command when the object is not detected by the detecting section.

Abstract: A monitoring apparatus according to the present invention has an image taking section which captures images of a plurality of image capturing areas, a detecting section which detects an object to be monitored based on an image obtained by the image taking section, a command receiving section which receives a command for remote control, and a command executing section which executes a process corresponding to the received command when the object is not detected by the detecting section.

Abstract: Dimensional data representing the actual dimension of a display subject is added to two-dimensional image data representing cross-sectional images, and upon displaying a three-dimensional image, the dimensional data is referred so that in the case of equal magnification, a variable magnification process is carried out by using a zoom optical system on a display subject; thus, an image is projected onto a screen with its display size having virtually the actual dimension of the display subject, and a character “magnification×1” is displayed on a liquid crystal display. In the same manner, when the user sets a magnification of ½, an image is projected onto the screen with its display size reduced to ½ of the actual dimension, and a character “magnification×½” is displayed on the liquid display.

Abstract: An oblique projection optical system is provided with a first group lens system, a second group lens system and a third group lens system that are placed in succession from a short conjugate length focal surface, and each lens system has a plurality of single lenses. The first group lens system contains a beam regulator to form a telecentric structure. The second group lens system is set to have a great tilt decentration and a parallel decentration with respect to the first group lens system. The third group lens system is set to have a great tilt decentration and a parallel decentration with respect to the second group lens system. In this manner, instead of making the lenses decentered inside each lens system, the respective lens systems are made decentered from each other; thus, the resulting projection device is easily manufactured, and makes it possible to correct the distortion aberration and focal position on the screen surface, and to project an image with high precision.

Abstract: A projection apparatus and a three-dimensional image display apparatus are provided. Light being separated into R, G and B color components reflected from a digital micromirror device through a TIR prism is directed into a both side telecentric optical system, is image-formed in the both side telecentric optical system, and is then directed into a processing optical system including optical path length compensators, dichroic mirrors, mirrors and an image rotation compensating mechanism without being vignetted The both side telecentric optical system is designed to satisfy |f1|>75 mm where f1 is the focal length of the entire both side telecentric optical system. The both side telecentric optical system has a long back focal length to allow the processing optical system to be easily placed in front of a projection optical system. Thus, the projection apparatus and the three-dimensional image display apparatus facilitate the insertion of the processing optical system therein.

Abstract: This invention, directed to a displacement type bone vibration ear microphone possessing an electroacoustic transducer element planted in one of the end faces of a support member and a damper member formed so as to enclose therewith the electroacoustic transducer element, is characterized by disposing a flexible reinforcing member around or near the electroacoustic transducer element, allowing a free end of the electroacoustic transducer element and a outer end of the reinforcing member to be joined or juxtaposed to each other, and enclosing the periphery of the electroacoustic transducer element and the reinforcing member with the damper member thereby providing protection for the electroacoustic transducer element and heightening the efficiency of electroacoustic conversion.