Abstract: In an image projection on a screen, an image projection apparatus improves the safety of entry into a projection region by the human body and does not bring about the increase of complexity of the configuration thereof owing to the improvement of the safety. A monitoring area is regulated on the outside of the projection area (3) of the screen (2). A detection wave such as infrared rays is emitted from a detection wave source (1c) of the image projection apparatus (1). A reflection wave from the monitoring area is detected by reflection wave detection means (1d) such as a CCD sensor. Whether the human body or an obstacle enters the monitoring space, which is surrounded by a detection wave (4) between the main body unit of the image projection apparatus (1) and the screen (2), or not is detected. Once the entry is detected, the intensity of the radiation light traveling toward the projection area (3) is reduced or cut off according to the situation or the degree of the entry.

Abstract: Light emitted from a light source is modulated and projected on a screen. The screen includes a securing member, a diffuser plate supported by the securing member using a plurality of elastic members, where the elastic members are disposed so that the diffuser plate is resiliently displaced in two directions in the plane of the diffuser plate, and a driving unit that moves the diffuser plate with respect to the securing member in the two directions in the plane of the diffuser plate.

Abstract: In an image projection on a screen, an image projection apparatus improves the safety of entry into a projection region by the human body and does not bring about the increase of complexity of the configuration thereof owing to the improvement of the safety. A monitoring area is regulated on the outside of the projection area (3) of the screen (2). A detection wave such as infrared rays is emitted from a detection wave source (1c) of the image projection apparatus (1). A reflection wave from the monitoring area is detected by reflection wave detection means (1d) such as a CCD sensor. Whether the human body or an obstacle enters the monitoring space, which is surrounded by a detection wave (4) between the main body unit of the image projection apparatus (1) and the screen (2), or not is detected. Once the entry is detected, the intensity of the radiation light traveling toward the projection area (3) is reduced or cut off according to the situation or the degree of the entry.

Abstract: A skew of an optical pickup device can be adjusted by a movable-side member itself which holds thereon an objective lens. A holder which holds an objective lens is supported by four spring wires such that it can be moved in the focusing direction and the tracking direction of an optical disk. A center of a magnetic circuit which drives the holder is shifted in the outer peripheral side relative to the optical disk. Elastic force of the spring wires of the inner peripheral side is suppressed by increasing the amount of a gel material bonded to the spring wires located on the inner peripheral side of the optical disk as a damping material as compared with the amount of the gel material bonded to the spring wires located on the outer peripheral side.

Abstract: A skew of an optical pickup device can be adjusted by a movable-side member itself which holds thereon an objective lens, A holder which holds an objective lens is supported by four spring wires such that it can be moved in the focusing direction and the tracking direction of an optical disk. A center of a magnetic circuit which drives the holder is shifted in the outer peripheral side relative to the optical disk. Elastic force of the spring wires of the inner peripheral side is suppressed by increasing the amount of a gel material bonded to the spring wires located on the inner peripheral side of the optical disk as a damping material as compared with the amount of the gel material bonded to the spring wires located on the outer peripheral side.

Abstract: In order to provide an optical pick-up capable of carrying out write and read operations of information signals with respect to plural kinds of optical discs in which thicknesses of transparent bases are different from each other and simple in configuration, a first object lens 7a for converging light beams from a first light source onto an optical disc 101 of the first kind and a second object lens 7b for converging light beams from a second light source 6 onto an optical disc 102 of the second kind are provided on the same lens bobbin 8. The lens bobbin 8 is movably supported by the columnar support shaft and is caused to undergo movement operation by magnetic circuit.

Abstract: An antitumor agent of the present invention comprises, as an effective ingredient, lipoteichoic acid which is extracted from gram-positive bacterial cells.

Abstract: An anti-tumor preparation containing cells of Streptococcus equisimilis and a process for preparing the preparation which comprises subjecting the cells to heat treatment in a salt solution with or without penicillin treatment.

Abstract: An anti-tumor substance which is not only heatstable but also has low inflaming and pain-inducing properties and low pyrogenic activity is disclosed. The substance is prepared by disrupting cells of bacteria belonging to hemolytic streptococci, extracting from the disrupted material a water-insoluble substance and treating the substance with one or more proteases and, optionally, with one or more nucleases.

Abstract: A long-scale moving coil instrument of the type comprising a frame, means including an arcuate core member secured to the frame for forming a magnetic circuit path, and a mounting member carrying a moving coil over the core member and being suspended for rotation relative to the frame by means of tension bands secured to bosses on the mounting member. The instrument is characterized by a pair of boss-stoppers made of an elastic, electrically insulating material. Each boss-stopper supports a tension spring, lies in a through-hole provided in the frame, and has a central passage through which the tension bands extend for connection to the tension springs, the passages additionally receiving the bosses on the coil mounting member to limit movement thereof. With this arrangement, electrical connections to the moving coil may be effected by means of the tension bands while maintaining the electrical connections isolated from the frame with the electrically insulating boss-stoppers.