Abstract: Providing an ultraviolet absorbent or photostabilizer with excellent absorption over a wide ultraviolet wavelength range and great stability and a high safety profile, as well as an ultraviolet-absorbing composition, a photostabilized composition and an external preparation for skin, where the pyridazine derivative of the following general formula and/or a salt thereof is included as the effective component of the ultraviolet absorbent or photostabilizer, or is included in the ultraviolet-absorbing composition, the photostabilized composition and the external preparation for skin: Wherein R1, R2, R3 and R4 are not simultaneously hydrogen atom; and R2 and R3 are not simultaneously morpholino group.

Abstract: A passenger aircraft so arranged that complete partition wall(s) is/are disposed in the manned space (e.g. a flight deck and a passenger cabin) of the aircraft fuselage so as to completely partition the manned space into at least two manned space sections which are completely isolated from each other. Hence, any hijacker is prevented by the partition wall(s) from his or her access to the manned space. Further, doors and lavatory are provided in the aircraft at points corresponding to such at least two isolated manned space sections, so that pilots, crews, flight attendants and passengers may not only find their own ways for egress from the aircraft and ingress thereto, but also have a wash and relieve themselves, for instance.

Abstract: A light-scanning optical system having a function of correcting surface tilt comprises a light source 11; a first optical means 1; a light-deflecting means 14 for reflecting and deflecting a luminous flux by its deflecting/reflecting surface 15 so as to scan a surface to be scanned 18; a first lens 16 having a positive refracting power in each of the main scanning and sub-scanning directions, in which each of both sides is made of a toric surface; and a second lens 17 having a small negative refracting power, in which each of both sides is made of an aspheric surface. A semiconductor laser having a wavelength of 500 nm or shorter is used as the light source. The first and second lenses 16, 17 may be made of plastic. Thus, in a simple configuration, the light-scanning optical system can reduce its size and cost, while being able to respond to higher image density.

Abstract: This electric mask generating apparatus reads mask bit string generation data, which has a configuration of one pixel per bit and is set in ROM, by a microcomputer, develops the mask bit string generation data in RAM, and thereafter writes the mask bit string generation data in mask generation memory. This electric mask generating apparatus reads a mask signal in this mask generation memory by a microcomputer, and mixes an image signal of an object with the above-described mask signal by using a shift register or the like in a mask-mixing circuit. According to the mask signal having this configuration of one pixel per bit, since it is possible to write the mask signal in the above-described mask generation memory during the time that is one-eighth of conventional write time, it becomes possible to quickly display an image to which a normal mask or a scaled mask is given.

Abstract: When a new processor is connected to an old electronic endoscope provided with a memory storing B data for image processing specific to the scope, white balance control is carried out by a microcomputer. That is, at the time when power is turned on, this microcomputer determines whether or not image processing data compatible with the new processor is present in the old electronic endoscope. If the compatible data are not present, the microcomputer carries out white balance control based on the image of white board picked up by the user, and additionally writes new C data for image processing at the time of white balance control in a memory of the old electronic endoscope together with data identification information. Thereby, the compatibility with an old type of electronic endoscope is maintained.

Abstract: In a color separating optical system, a first filter adapted to eliminate from light emitted from a red light exit face a light component in a wavelength range longer than a longer-wavelength-side boundary wavelength of a red visible light wavelength region is disposed at a prism surface in an optical path for guiding red region light, whereas a second filter adapted to reflect a light component in a wavelength range longer than a reference wavelength which is longer than the longer-wavelength-side boundary wavelength by a predetermined wavelength but transmit therethrough a light component in a wavelength region shorter than the reference wavelength is placed at the red light exit face.

Abstract: The object of the present invention is to provide a holographic notch filter which can favorably reject and remove a narrow, desired range of wavelengths of the incident light and a method of easily manufacturing the holographic notch filter. For achievement of the above object of the present invention, a multi-structure holographic notch filter 2 having a holographic recording material 4 arranged on which modulations of the refractive index are recorded by two-beam interference is provided as characterized in that a thin-film filter element 6 is fabricated from a thin form of the holographic recording material 4 in which modulations of the refractive index are recorded by the two-beam interference and a plurality of the thin-film filter elements 6 are joined together to develop a layer arrangement.

Abstract: The object of the present invention is to provide a film composition which is solidified in water of which a painted film is rapidly solidified and also has proper usabilities for use as a manicure. To accomplish the object a film composition of the present invention comprises water insoluble film materials, and a solvent which dissolves the water insoluble film materials and soluble with water, wherein the solvent contains specified alkylene glycol ethers and ketones, and characterized by that the film materials are precipitated from the mixture of the remaining solvent and penetrating water in a painted film of the composition when the painted film is dipped in water.

Abstract: A take-up reel has a diameter equal to or more than 85 times a thickness of a veneer sheet wound thereon and equal to or more than 300 mm so as to be of a curvature of the take-up reel to reduce cracking in parallel to fiber orientations that occurs in winding a veneer sheet after drying on a winding surface of the take-up reel.

Abstract: A projection type image display apparatus comprises a variable stop mechanism adapted to regulate the size of effective luminous flux diameter at a predetermined position in the optical path from an illumination optical system to a projection lens system, and image mode switching means for controlling operations of the variable stop mechanism. Respective image modes suitable for viewing in bright and dark surrounding environments are selected by switching between greater and smaller effective luminous flux diameters.

Abstract: The present invention relates to a plasminogen activator inhibitor, an external preparation for skin comprising the same, a method for improving rough skin and in particular, for improvement of an effective inorganic component. A plasminogen activator inhibitor contains a specific zinc oxide which adsorbs a plasminogen activator and effectively inhibits its activity. When it is used as an external preparation for skin, excellent improvement of rough skin is obtainable. Further, when silica-coated zinc oxide is applied as an external preparation for skin, excellent improvement effect and prevention effect for rough skin are obtainable without an intolerance sensitivity reaction in the case of morbid dermatitis such as atopic dermatitis or pimpled skin.

Abstract: Clamping mechanism of spectacle lens is provided, which does not involve any complications in assembly, but allows the spectacle lens to be held in place with facility and renders the spectacles smart and shapely in design. A pair of glasses or a lens is stably and accurately supported in front of the eyes by poking the projections provided to either the front bar or the rim frame to support the same through at least two points of the same for clamping. The facility of clamping the lens or lenses allows the labor for the assembly of the spectacles to be lightened as well as the production cost thereof to be reduced, which facility also renders the spectacles as assembled smart and shapely in design, so that its industrial applicability is very high.

Abstract: An objective lens for converging two wavelengths of light to their predetermined positions is constituted by two or three lenses. Respective materials for forming adjacent lenses are chosen such that the respective refractive indices of adjacent lenses substantially equal each other with respect to only one of the two wavelengths of light, whereas the form of each lens surface is configured so as to suppress aberration in the objective lens as a whole.

Abstract: In an optical system for an oblique incidence interferometer, first and second prisms are used for luminous flux dividing and for luminous flux combining, respectively. Reference light and measurement light are separated from each other at a surface where collimated coherent light enters or exits from the first prism, whereas the reference light and measurement light are combined together at a surface where the measurement light enters or exits from the second prism.

Abstract: Within a chamber in a vacuum atmosphere, SiO is deposited on a glass substrate so as to form a first layer as a protective film, Al is deposited on the first layer so as to form a second layer as an aluminum reflective film, MgF2 is deposited on the second layer so as to form a third layer as a transparent protective film, and CeO2 is deposited on the third layer so as to form a fourth layer as a transparent protective film. Then, while O2 gas is introduced into the chamber, SiO2 is deposited on the fourth layer so as to form a fifth layer as a transparent protective film.

Abstract: In an imaging lens made of three lens sheets, the second and third lenses from the object side are shaped substantially similar to each other, thereby reducing the manufacturing cost while improving resolution. The first lens L1 is a biconcave lens having a surface with a stronger curvature directed onto the object side. Each of the second lens L2 and third lens L3 is a biconvex lens having a surface with a stronger curvature directed onto the imaging surface side, while the second lens L2 and third lens L3 have the same form. As the second lens L2 and third lens L3 have the same form, the cost of manufacturing the imaging lens can be reduced, though being constituted by three sheets of lenses.

Abstract: In an apparatus using an AC lighting lamp including a reflector and a condensing lens as a condensing unit and using a CCD to pick up an image of a subject irradiated with a light from the lamp, an entrance facet of a light guide is arranged between two condensing points G1 and G2 and at a position that is not close to either of the condensing points, particularly at an intermediate position therebetween so that lights from a bright spot g1 or g2 at a tip of a first or second electrode, respectively, of the lamp are condensed at the corresponding condensing point by the condensing unit. Thereby, although an amount of emission slightly decreases compared to the case where the entrance facet is arranged on the basis of the bright spot, emission with a reduced variation in luminance is obtained to enable photographing with a substantially uniform amount of exposure, while preventing possible flickers.

Abstract: In a three-dimensional image scanner, a grating projection type moire topography is used, so as to capture three-dimensional form information of an object to be measured easily in a short time with a high degree of freedom in measurement. Also, a heat-insulating partition comprising at least two partition walls forming a cooling/heat-insulating path is disposed between a light source and a heat-sensitive section, so as to effectively inhibit the heat generated by the light source from being transmitted to the heat-sensitive section. The three-dimensional form information of the object is captured by a measurement head 12 having a function as a grating projection type moire device.

Abstract: A take-up reel has a diameter equal to or more than 85 times a thickness of a veneer sheet wound thereon and equal to or more than 300 mm so as to be of a curvature of the take-up reel to reduce cracking in parallel to fiber orientations that occurs in winding a veneer sheet after drying on a winding surface of the take-up reel.

Abstract: An apparatus and method for detaching a bead of a tire, has a tire bead separation shoe (1), which has a wedge portion (12) which engages a rim edge (WR) of a wheel (W) having a tire (T). The rim is mounted on a turntable (R). The wedge portion (12) is between the rim edge and the tire bead (TB) and the tire bead fold-back portion (11), and is arranged above the turntable such that it moves up and down. A thrusting rod (4) having a claw (41) provided at its tip end portion is operated when the said wedge portion (12) is shoved between the tire bead (TB) and the rim edge (WR) of the wheel. The claw (41) is shoved between the tire bead and the rim edge. A part of the tire bead is squeezed out of the wheel by the claw onto the bead fold back portion (11). The turntable is revolved so as to smoothly detach the whole circumference of the tire bead (TB) from the rim edge of the tire (W).