Abstract: This cleaning apparatus includes a rotation holding unit that holds and rotates an object; a cleaning fluid spray unit that sprays a cleaning fluid onto a spot-like cleaning region on the object, which is held by the rotation holding unit; a cleaning region moving unit that moves at least one of the rotation holding unit and the cleaning fluid spray unit to relatively move the cleaning region from the rotation center of the object toward the outer peripheral side thereof; a layered air current forming unit that forms a layered air current entering the surface of the object so as to cover the periphery of the cleaning region from a backward side in the direction of movement of the cleaning region relative to the rotation center; and a layered air current moving unit that relatively moves the incoming position of the layered air current while following the relative movement of the cleaning region.

Abstract: An aircraft ice protection system is provided for preventing ice accretion on a wing of an aircraft or removing the accreted ice. Bleed air extracted from a main engine of the aircraft and air introduced from an air intake installed on an airframe and heated by a heat source of the airframe of the aircraft are selectively supplied to a hot air chamber formed inside the wing, thereby carrying out ice protection.

Abstract: This cleaning apparatus includes a rotation holding unit that holds and rotates an object; a cleaning fluid spray unit that sprays a cleaning fluid onto a spot-like cleaning region on the object, which is held by the rotation holding unit; a cleaning region moving unit that moves at least one of the rotation holding unit and the cleaning fluid spray unit to relatively move the cleaning region from the rotation center of the object toward the outer peripheral side thereof; a layered air current forming unit that forms a layered air current entering the surface of the object so as to cover the periphery of the cleaning region from a backward side in the direction of movement of the cleaning region relative to the rotation center; and a layered air current moving unit that relatively moves the incoming position of the layered air current while following the relative movement of the cleaning region.

Abstract: An aircraft ice protection system is provided for preventing ice accretion on a wing of an aircraft or removing the accreted ice. Bleed air extracted from a main engine of the aircraft and air introduced from an air intake installed on an airframe and heated by a heat source of the airframe of the aircraft are selectively supplied to a hot air chamber formed inside the wing, thereby carrying out ice protection.

Abstract: Element fixing mounting portions are formed in the shape of bridge beams on both the side surfaces or the like of the first optical surface, which is disposed in confrontation with an image display element, of a Free-Form-Surface prism 61 acting as an optical element, the side surfaces being located externally of the effective light beam range of the first optical surface. Then, the optical element can be mounted on a cabinet making effective use of a space by projecting positioning bosses or the like from the mounting portions, the bosses being used when optical element is mounted on the cabinet.

Abstract: Element fixing mounting portions are formed in the shape of bridge beams on both the side surfaces or the like of the first optical surface, which is disposed in confrontation with an image display element, of a Free-Form-Surface prism 61 acting as an optical element, the side surfaces being located externally of the effective light beam range of the first optical surface. Then, the optical element can be mounted on a cabinet making effective use of a space by projecting positioning bosses or the like from the mounting portions, the bosses being used when optical element is mounted on the cabinet.

Abstract: The pixel number of an image display is increased through the optical shift of the positions of the pixels of the image display, that is, pixel shift. Therefore, a high resolution image can be observed using a low cost image display with a relatively few pixel number.

Abstract: A head-mounted picture display device which includes a picture display system and front and back covers. The picture display system includes LCDs for displaying pictures and prisms for introducing the pictures to the observer's eyes. The front and back covers are designed to accommodate the picture display system and are formed by molding with dies so as to be separated from each other in a predetermined direction. The back cover has surfaces tilted substantially along the emission surfaces of the prisms. The surfaces each have a substantially rectangular aperture. Transparent plates are press-fitted in the apertures. The transparent plates are held in a position at an angle relative to a vertical axis and a transversal axis of the housing body.

Abstract: The present invention provides a head-mounted picture display device including a picture display system, a housing body, left and right supporting frames, and joint members. The picture display system includes picture display elements for producing pictures represented by a supplied video signal, and prisms for introducing beams transmitting the pictures produced by the picture display elements to the observer's eyes. The housing body accommodates the picture display system while the left and right supporting frames are adapted to be worn are on the observer's left and right ears for supporting the housing body in an observable position. The joint members link the housing body and the left and right supporting frames.

Abstract: A main unit of an HMD that is a head-mounted picture display device of the present invention can be mounted on the observer's head. The main unit has a front cover and back cover constituting a housing body that accommodates LCDs serving as picture display members, and prisms. The front cover and back cover are unitedly secured by inserting headed screws from the back cover with projections fitted into inner circumferential parts. The front cover has two surfaces lying along lines inclined upward and downward from apices toward the back cover. The main unit is retained at a viewable position, located closely to or in contact with the observer's head, in front of observer's eyes. The adoption of this shape of the housing body permits a lightweight design of the main unit and enables long-term use thereof.

Abstract: A display body (1) is capable of being mounted via a support frame (3) having band pieces (2) on the head of a doctor, for instance a surgeon. The display body (1) has cylindrical grips (4) projecting from its opposite sides. The grips (4) are attached to and detached from the display body (1). The grips (4) are cylindrical in shape.

Abstract: It is the object of the invention to provide a compact and highly stable head-mount image display apparatus capable of always transmitting voice information of an optimal volume, irrespective of the positional relationship between the head and the ear of an observer, which is related to the shape and/or size of the head. To attain the object, speakers incorporated in the apparatus of the invention can be moved to desired positions in accordance with changes in the positional relationship between the head and the ears of observers. Further, the apparatus of the invention can be folded to reduce the area the apparatus occupies.

Abstract: A head mounted image display includes a display body having image display sections and optical systems and a supporting section for fixing the display body in front of the eyes of an observer so that the observer can view the image display sections with his eyes. The supporting section has at least four supporting points, which are arranged so that at least one supporting point is placed outside a plane formed by at least three supporting points. Thus, the observer can comfortably wear the display.