Abstract: An image stabilized optical system includes a casing, an objective system, an eyepiece system, a gimbal connected to the casing via a shaft and capable of oscillating, an erect prism attached to the gimbal, a motor attached to the gimbal, an inertial rotor supported by a rotating rod of the motor, and a damper attached to the gimbal. The damper includes a viscoelastic member and has a first end attached to the gimbal and a second, free end spaced from the casing and the shaft. An image can be highly stabilized by efficiently suppressing in the damper vibrations (resonance) generated in the gimbal. Further, size, weight, and cost reductions, and easy manufacture of an image stabilized optical system are attained.

Abstract: An image stabilized optical system includes a casing; an objective system and an eyepiece system; a gimbal which is connected to the casing via a shaft and is capable of oscillating; an erect prism attached to the gimbal; a motor attached to the gimbal; an inertial rotor supported by a rotating rod of the motor; an oscillating member attached to the gimbal; a caging member rotatably attached to the casing, the caging member being capable of moving between a caging position where the caging member prevents oscillation of the oscillating member and an uncaging position where the oscillating member is capable of oscillating; operating force-transmitting means for transmitting an operating force to the caging member; and an elastic member.

Abstract: A position measuring/plotting apparatus and a position indicator are used in plotting a plan view representing a situation, for example, the site of a traffic accident. The position measuring/plotting apparatus generally includes a position detector to detect spatial coordinates of targets, a processor to detect plane coordinates of the targets based on the spatial coordinates, and a plan view plotter to plot a plan view based on the data regarding those plane coordinates. The position indicator comprises a plurality of targets fixedly mounted on a supporting rod having an end serving to indicate a position of a scene component. Each target includes a reflector adapted to reflect a light beam projected thereon and light emitters used to project light beams by which the target is detected by the position detector.

Abstract: An optical instrument such as a binoculars has an eyepiece lens unit detachably mounted on an eyepiece mount and comprising an eyepiece lens assembly including an eyepiece lens and an image intensifier tube assembly separably coupled to the eyepiece lens assembly. The image intensifier tube assembly includes an image intensifier tube having a light-sensitive surface lying at the focal plane of the objective lens and a phosphor screen lying at the focal point of the eyepiece lens. When the optical instrument is used to enable the user to see a dark object, the eyepiece lens unit with the eyepiece lens assembly and the image intensifier tube assembly coupled together is attached to the eyepiece mount. For the user to see a bright object, the image intensifier tube assembly is detached from the eyepiece lens assembly, and the eyepiece lens assembly is attached directly to the eyepiece mount.

Abstract: An optical color-separation system for use in a color television camera having an image plane compensating lens associated with each of three camera tubes. Each compensating lens is provided with a diffusing area lying on the periphery thereof so as to be out of the image forming optical path. Photo-diodes are provided in opposing relation to the diffusing area. Light from the photo-diodes passes through the diffusion area to provide bias light for the camera tube.