Abstract: A portable device for collecting information about a living body is provided, which can be worn on the human body and is capable of periodically performing cognitive faculty tests during daily life to grasp fluctuations in the memory faculty of a wearer. The device includes: a character selection unit for randomly selecting plural kinds of characters; a display portion for displaying the characters; an input unit for answering about the relationship between characters displayed randomly in the display portion in adjoining time sequence; a clocking unit for clocking a response time from when the displayed character is updated, until the input signal is inputted from the input unit; a memory unit for storing the answer from the input unit, and the response time; and a control circuit for causing the memory unit to store the response time and the answer, in time sequence.

Abstract: A portable living body information collection device is arranged to continuously measure living body information in daily life and to efficiently collect relating mental information by timely questioning about health. The device can be worn on a human body. The portable living body information collection device extracts living body information in electrical signal form by a detection circuit and a signal processing circuit, and discretizes the information by a conversion circuit. A control circuit stores the discretized living body information in a storage and displays questions about feelings and mental conditions on a display unit periodically or when a large changes occurs in living body information. The wearer inputs answers by using an input device, and the answers are also recorded as mental information in the storage.

Abstract: Reflection surfaces (2, 3) and a diaphragm (1) for limiting light fluxes disposed between an object and the reflection surface (2) that is located closest to the object are provided. At least one surface of the plural reflection surfaces (2, 3) has an anamorphic shape. The reflection surfaces (2, 3) are disposed eccentrically. There is provided a light shielding member (6) for blocking light fluxes passing through the diaphragm (1) and reaches the range to be imaged on an image surface (4) without being reflected by the reflection surfaces (2, 3). Since the shielding member (6) is disposed, unnecessary light fluxes do not reach the image surface directly. Since there is no refractive transmission plane, also unnecessary light reflected by the transmission plane does not reach the image surface.

Abstract: An optical scanner having excellent optical performance and guiding a light beam from one curved mirror directly to a photoconductive drum without requiring a reflecting mirror. The optical scanner includes: a light source unit (1); an optical deflector (5) for deflecting a light beam from the light source unit so as to cause scanning; a first image formation optical system (2, 3) for forming a line image on a deflection surface of the optical deflector, which is disposed between the light source unit and the optical deflector; and a second image formation optical system (7) composed of one curved mirror, which is disposed between the optical deflector and a surface (8) to be scanned.

Abstract: An illuminating device comprising a light source for emitting a plurality of light beams (207, 208, 209) of different colors, a plurality of rotating beam scanners (102, 103, 104) and a plurality of scanning lenses (109, 110, 111). The beam scanners have spiral reflection surfaces (102, 103, 204) formed on the outer peripheries of cylindrical bodies, Each colored light beam is shone onto each reflection surface from a direction parallel to a rotating axis, and magnified by each scanning lens after reflected to scan an illuminated area with a plurality of beams of different colors one after another. Accordingly, the illuminating device can enhance scanning linearity, reduce noise due to a minimal windage loss, and decrease costs and power consumption.

Abstract: A device capable of continually injecting a liquid through propagation of ultrasonic waves. The device comprises: a nozzle 1 having an injection orifice 11 and a connection orifice 10 for connecting with the liquid supply pipe 3; and a vibrator 2 installed on the block section of the nozzle, facing the injection orifice 11; said nozzle 1 having a discharge outlet 12 for the discharge of excess liquid in the side facing the connection orifice 10.

Abstract: A premixing section for supplying a fuel-air mixture to a homogeneous combustion chamber includes a first fuel nozzle disposed along an axis, a second fuel nozzle disposed to surround the outer periphery of the first fuel nozzle, and a premixing/pre-evaporating chamber. The first fuel nozzle is a diffusion combustion type nozzle and supplies the fuel-air mixture from an air blast-type nozzle tip directly to the homogeneous combustion chamber. The second fuel nozzle is a premixing/pre-evaporating type nozzle and supplies the fuel-air mixture from an air blast-type nozzle tip to the premixing/pre-evaporating chamber, so that the fuel-air mixture promoted in mixing and evaporation in the premixing/pre-evaporating chamber, is supplied via a swirler to the homogeneous combustion chamber. With the above arrangement, the atomization of the fuel enhances the emission characteristics.

Abstract: A high-performance optical scanner in which the f.theta. characteristics and the field curvature are compensated excellently by shifting an optical deflector by an optimum amount and using a collecting lens that can be processed easily. The optical scanner includes, in one embodiment: a semiconductor laser 1; a polygon mirror 4 as an optical deflector; a cylindrical lens 3 as a first imaging optical system; and a correcting lens 6 as a second imaging optical system formed of one correcting lens having a curved-axis toric surface. A formula of 0.15<{.DELTA.X.multidot.cos (.alpha./2)}/rp<0.35 is satisfied, wherein .DELTA.X indicates a shift amount that is the distance between a reflecting point at a scanning center and the center of a deflecting plane, .alpha. represents an angle of reflection on the deflecting plane at the scanning center, and rp denotes the radius of an inscribed circle in the polygon mirror 4.

Abstract: A display device comprises a transparent type LCD including a pair of transparent plates facing each other, spaced with a predetermined gap and a polymer dispersed liquid crystal disposed between the transparent plates, which can be switched between a transparent state and a diffraction state pixel by pixel to display images or characters; a signal generator for giving display signals to the transparent type LCD; and a light system including a light source emitting light rays that enter the transparent plates from their edge faces, and a stop plate disposed between the edge faces of the transparent plates and the light source. This stop plate has an opening that extends along the longitudinal direction of the edge face of the transparent plate, and the width of the opening in the cross direction changes cyclically along the longitudinal direction.

Abstract: The light source equipment is provided with a light source and an anamorphic single lens. The anamorphic single lens has different refracting powers in the x and y directions orthogonal to each other, and converts a light from the light source to a light beam in a required state. Farther the anamorphic single lens satisfies the following equation :0.3<2.multidot.fy.multidot.tan (.theta.y/2)<0.7fy>fxwhere fx is a focal length in the x direction, fy is a focal length in the y direction, and .theta.y is a half angular divergence of radiant intensity of the light in the y direction.

Abstract: In order to provide cemented carbide, provision is made about tungsten carbide powder which has a grain size not smaller than 1 .mu.m and which is mixed with carbon powder and chromium powder to form raw powder. The tungsten carbide powder is formed by fine primary crystal particles of tungsten carbide and satisfies an inequality given by:Y>0.61-0.33 log (X),where Y denotes a half-value width of (211) crystal planes in tungsten carbide (JCPDS-card 25-1047, d=0.9020) measured by a X-ray diffraction method and where X denotes a grain size measured by the FSSS method. There is also provided a method of producing the composite carbide powder having tungsten carbide powder as a main element, the method comprising the steps of preparing tungsten powder which has a mean grain size not smaller than 1 .mu.m, mixing the tungsten powder with carbon powder and chromium powder into a mixture, and processing the mixture in a predetermined atmosphere into fine primary crystal particles of tungsten carbide.

Abstract: A plurality of types of ink having different wavelength characteristics are used for multiple printing of code information. When two or more types of ink are to be printed in an overlapping manner, in a region 8 in which one type of ink 4 and another type of ink 5 are printed in the overlapping manner, the ink 4 and the ink 5 are printed so as not to completely overlap each other by using a checkered pattern 9. As a result, the multiple printing can be performed without strict constraints on the wavelength characteristics of the ink.

Abstract: An optical scanner comprising a light source unit, an optical deflector to scan a light beam from the light source unit, a first image formation optical system disposed between the light source unit and the optical deflector, and a second image formation optical system disposed between the optical deflector and the surface to be scanned, wherein the second image formation optical system comprises a first curved mirror to reflect the light beam from the optical deflector and a second curved mirror to focus the light beam from the first curved mirror on the surface to be scanned, having surface shapes of any of the group consisting of the first curved mirror having a toric surface with a convex shape in the main scanning direction, which is the direction a light beam is scanned in, and with a concave shape in the sub scanning direction, which is the direction perpendicular to the main scanning direction, and the first curved mirror having a toric surface with a concave shape in the main scanning direction and a

Abstract: An optical scanner comprising a light source unit, an optical deflector to scan a light beam from the light source unit, a first image formation optical system disposed between the light source unit and the optical deflector, and a second image formation optical system disposed between the optical deflector and the surface to be scanned, wherein the second image formation optical system comprises a first curved mirror to reflect the light beam from the optical deflector and a second curved mirror to focus the light beam from the first curved mirror on the surface to be scanned, having surface shapes of any of the group consisting of the first curved mirror having a toric surface with a convex shape in the main scanning direction, which is the direction a light beam is scanned in, and with a concave shape in the sub scanning direction, which is the direction perpendicular to the main scanning direction, and the first curved mirror having a toric surface with a concave shape in the main scanning direction and a

Abstract: The scanner optics of this invention includes a condensing lens arrangement composed of a first aspherical lens having a positive refractive power and a convex meniscus surface on the side of the scanning surface and a second toric lens of which incident surface is saddle toroidal where a point on the incident surface has a greater radius of curvature in the sub-scanning direction as the point is farther from the optical axis in the scanning direction. A laser light flux emitted from a light source is deflected and scanned by a polygon mirror so as to form an image on a scanning surface via the condensing lens arrangement.

Abstract: The optical scanner of this invention includes a light source, an optical deflector for scanning a light flux from the light source, a first image formation optical system disposed between the light source and the optical deflector, and a second image formation optical system disposed between the optical deflector and a surface to be scanned. The second image formation optical system includes a curved mirror for reflecting a light flux from the optical deflector and a correction lens for converging the light flux from the curved mirror on the surface to be scanned. A refractive power in the sub-scanning direction at the center of the correction lens in the scanning direction is different from that at the periphery thereof.

Abstract: The present invention provides a method of designing a post-objective type optical scanner having an optical deflector composed of cylindrical or spherical reflecting surfaces for deflecting a converged light beam from a condensing lens by reflecting the converged light beam as it rotates, and a compensating lens located in an optical path between the optical deflector and a scanning surface for converging the deflected light beam from the optical deflector to a point on the scanning surface, of which power in the sub-scanning direction varies with a length from the center thereof in the scanning direction.

Abstract: An anamorphic single lens has its radii in respective directions determined by the transfer efficiency of beams and imaging positions in respective directions, as required by the overall optical scanner. The anamorphic single lens satisfies the following formulae: ##EQU1## where fm is the focal length of the lens in the direction of beams diverged at a larger angle, TH is the thickness, S is the distance from a light source side principal point position (6) to the light source (5) in the direction of the beams diverged at the larger angle, and S' is the distance from a light source side principal point position (8) to the light source in the direction of beams diverged at a smaller angle.

Abstract: In an infrared wide-angle single lens which is as constructed as of a positive meniscus lens, the following conditional expressions (1) through (6) are satisfied:(1) -50.0 th<r.sub.1 <-3.5 th(2) -5 th<r.sub.2 <-1.1 th(3) 2<n<4.5(4) 0.1 f<d<0.8 f(5) 0.5 f<bf<1.5 f(6) 0.5 f<th<2fwhere, an aperture stop is disposed between an object plane and a first surface, d is the distance between the aperture stop and the first surface, th is the lens thickness, bf is the backfocus, r.sub.1 is the radius of curvature of the first surface of the lens, r.sub.2 is the radius of curvature of a second surface of the lens, n is the refractive index of a vitric material of the lens at a wavelength of 10 .mu.m, and f is the focal length.

Abstract: An apparatus for detecting position or temperature distribution of an object has a lens which is rotated around a pyroelectric type infrared sensor to collect incident infrared ray on the sensor while scanning the incident infrared ray in a rotational direction. The optical scanning is operated also in the longitudinal direction by providing with a plurality of lenses having different view in the longitudinal direction, the lenses being rotated sequentialy around the sensor. Further, detection of temperature of an object is conducted without using optical chopper by alternately observing the object and a standard temperature material which is arranged in a part of view, or by providing a stationary slit unit on a curved surface formed around a center axis which is the same as the rotation axis of the lens and a movable slit unit having the same pitch and arranged adjacent to the stationary slit unit and rotating together with the lens to intermitting the incident infrared ray.