Abstract: The present invention provides a piezoelectric substrate for a surface acoustic wave device which has high electromechanical coupling coefficient and low SAW velocity, and a surface acoustic wave device using the same. The present invention applies a single crystal comprising belonging to a point group 32 and having Ca3Ga2Ge4O14 type crystal structure. The basic component of the single crystal is comprised of La, Sr, Ta, Ga and O and is represented by the chemical formula: La3−xSrxTa0.5+0.5xGa5.5−0.5xO14. The composition ratio of Sr is preferably in the range of 0 x≦0.15, and more preferably in the range of 0.07 x≦0.08. The present invention also provides a surface acoustic wave device using that in which an interdigital finger electrode is formed in one main surface of the aforementioned piezoelectric substrate.

Abstract: An imaged pickup apparatus wherein the light projected position in which light representing sample points of the image of an object to be photographed is projected is changed, and any light receiving element of a light receiving section sequentially detects the intensity of the light representing the individual sample points. The light receiving section generates outputs representing the detected light intensities in synchronization with changes of the light projected position, and as a result, a plurality of image signals are produced. The light receiving section includes a plurality of groups each of which consists of light receiving elements, having light receiving surfaces and forming a set, and apertures. The apertures are orthographically projected in different positions on the light receiving surfaces of the light receiving elements. The produced pixel data are arranged so that the pixel data representing the intensity of light which has passed through different apertures are adjacent to each other.

Abstract: An optical microscope has a revolver for selectively inserting a plurality of objective lenses including a low-magnification (very-low-magnification) objective lens on an optical axis for observation light. In fluorescence observation using the low-magnification objective lens, the effective diameter of an observation optical system is set larger than that of an illumination optical system. With this arrangement, fluorescence observation using the low-magnification objective lens can be stably performed. A cube unit having a plurality of cubes corresponding to the respective microscopic methods is arranged in the optical microscope. An auxiliary lens serving as a very-low-magnification objective lens is mounted in this cube unit. The auxiliary lens can be automatically used in observation using the very-low-magnification objective lens. With this arrangement, a compact optical microscope excellent in operability can be realized.

Abstract: An image recording apparatus having a laser beam source which emits a laser beam, and an incident angle changing device for changing an incident angle, in a sub scanning direction of the laser beam emitted from the laser beam source, onto a light sensitive material. The incident angle changing device changes the incident angle of the laser beam emitted from the laser beam source on the light sensitive material from &thgr;1 to &thgr;2. The incident angle &thgr;1, an incident angle &thgr;1′ at which the laser beam is incident at the incident angle &thgr;1 on the light sensitive material, is incident in the light sensitive material. The incident angle &thgr;2, an incident angle &thgr;2′ at which the laser beam is incident at the incident angle &thgr;2 on the light sensitive material, is incident in the light sensitive material. One of integers N satisfies the following formula: (N+0.5−(0.7/&ggr;))<(2nh/&lgr;)(cos &thgr;1′−cos &thgr;2′)<(N+0.5+(0.

Abstract: A surgical microscope apparatus incorporating a frame portion placed on a floor, a microscope body for stereoscopically observing a portion to be operated, an arm portion supported by the frame portion and arranged to suspend the microscope body, and an endoscope for observing a blind spot for a stereoscopic observation field of view. The frame portion has a light source unit for generating light for illuminating a portion observed with the endoscope and a camera control unit for processing an observed image of an observed portion obtained by the endoscope. A light guide fiber extending from the light source unit to the microscope body and capable of supplying light to the endoscope, and a camera cable for transmitting the image observed with the endoscope to the camera control unit extend in the arm portion. The microscope body is provided with an end of the light guide fiber for connecting the endoscope and a camera head connected to the camera cable.

Abstract: An oscillating actuator is provided which includes a coil-holding member, and a carriage member. The carriage member has a bearing hole and at least one arm, and the at least one arm has a head portion and an intermediate portion arranged between the head portion and the bearing hole. In addition, a thickness of the intermediate portion in a normal direction, perpendicular to a width of the carriage member, is smaller than a thickness of the head portion in the normal direction. The oscillating actuator having this structure exhibits excellent dimensional stability when used in a disk apparatus, and can be produced easily and economically.

Abstract: Each time a mobile terminal enters a service area of an information providing device and its location is registered by the information providing device, the area code and local code of telephone numbers and addresses associated with the service area are sent from the information providing device to the mobile terminal. Based on the area and local codes of telephone numbers and the addresses, the terminal retrieves the telephone numbers, names and addresses of acquaintances residing within the service area from an address book stored in its RAM and visually displays them with a notification sound. Thus, the user at the terminal can know access information for acquaintances residing within each service area each time the user enters the service area.

Abstract: A distance measurement apparatus irradiates an object with a light from a light source whose luminance can be modulated or from a pulse light source, and receives the reflected and returned light to obtain a distance to the object. A photoelectric converter receives the reflected light and photoelectrically converts the received light. A first charge accumulator accumulates an electric charge transferred via a first gate driven by a first transfer pulse synchronized with an emitting timing of the light from the light source among electric charges generated by the photoelectric converter. A second charge accumulator accumulates an electric charge transferred via a second gate driven by a second transfer pulse complementary to the first transfer pulse among the electric charges generated by the photoelectric converter.

Abstract: The camera includes a strobe device, a distance-measuring device and a heat insulating section. The strobe device has a light source for irradiating light onto an object at the time of photographing. The distance-measuring device measures the distance to the object. The heat insulating section is provided between the strobe device and the distance-measuring device, so as to prevent the heat generated by the strobe device from being transmitted to the distance-measuring device.

Abstract: An n-type modulation-doped multi quantum well semiconductor laser device having a multi quantum well structure composed of a hetero-junction structure including well layers and barrier layers, characterized in that each of the well layers and each of the barrier layers are formed of an undoped semiconductor material and a semiconductor material modulation-doped with an n-type dopant, respectively, an anti-reflection film and a high-reflection film are formed on the front and rear facets, respectively, the resonator length is not shorter than 800 &mgr;m, and mirror loss (&agr;m) given by &agr;m=(1/2L)ln{1/(Rf×Rr)}, where L, Rf and Rr are the cavity length (cm), reflectance of the front facet, and reflectance of the rear facet, respectively, is not higher than 15 cm−1. The output of this laser device is higher than that of a conventional undoped MQW semiconductor laser device.

Abstract: A silver halide emulsion is disclosed, comprising tabular grains having an aspect ratio of 5 or more, the tabular grains further having dislocation lines of 30 or more per a grain, in a fringe portion of the grain and the tabular grains each containing silver iodide, the content of which gradually and continuously varies in the direction of from the grain center to the edge.

Abstract: When a person wearing the wristwatch device (11) on his or her dominant arm has struck a blow, an acceleration sensor (12) senses acceleration at regular intervals of time, extracts accelerations x1 to x20 sensed at 20 points in front of the hit point H at which the sensed acceleration changes from positive to negative, and stores them in a RAM (20). The impulse force is calculated by multiplying the accelerations x1 to x20 at the 20 points in front of the hit point H by the weighting coefficients determined on the basis of the accelerations sensed in a trial performance and the actually measured impulse force and stored in a ROM (19). Therefore, the impulse force can be estimated accurately without actually striking a secured object.

Abstract: The present invention provides compounds represented by the following formula [I] or salts thereof which lower intraocular pressure by causing morphological change in trabecular meshwork cells. In the formula, R1 is H, lower alkyl, hydroxy, lower alkoxy or halogen, R2, R3 and R4 are H or lower alkyl, and . . . is a single bond or a double bond. When R3 and/or R4 is hydrogen, the amino can be protected by a protecting group.

Abstract: In the present invention, a transmission-illumination apparatus for use in a microscope has a transmission-illumination optical system comprising a condenser lens for radiating light emitted from a light source onto a sample, and an observation optical system including an objective lens for observing the sample. At least two shield members for controlling a shape of an aperture created in a pupil of the objective lens are disposed at or near positions conjugate with a pupil position of the objective lens. Thereby, a contrast can be successively varied without disposing a purpose-specific optical element, etc. in the observation optical system, and illumination with an optimal contrast can be provided for various samples.

Abstract: A three-dimensional wiring board comprises a metal base having a roughed surface, a heat-bonding type of polyimide film without using adhesive, bonded to the roughed surface and serving as an electric insulating layer, and a copper foil for a conductive layer, bonded to the other surface of the polyimide film. A method for manufacturing the wiring board comprises a roughing treatment process for plating or oxidizing the surface of a metal base, thereby forming a roughed surface, a contact bonding process for attaching a polyimide film to the roughed surface and a copper foil by thermocompression bonding, thereby forming a laminate material, a patterning process for etching the copper foil into a desired conductive pattern, and a bending process for bending the laminate material into a desired three-dimensional shape by press working.

Abstract: The present invention is provided with a switch circuit which can turn on/off electric power supply from a battery. Further, a CPU transfers and evacuates specific data stored in a DRAM when electric power supply from a main power supply is stopped and electric power supply from a battery is performed. Thereafter, the CPU turns off the switch circuit and stops electric power supply from the battery.

Abstract: The present invention avoids a loss of information recorded on or information to be recorded onto an optical disk by accepting a state of deterioration of a semiconductor laser in a closed-type optical disk apparatus. The optical disk is rotated in a predetermined direction by a driving of a spindle motor through a motor driver based on an instruction from a control section. Information is recorded onto or reproduced from the optical disk by a semiconductor laser driven through a laser driver based on an instruction from the control section. The state of progress of deterioration of the semiconductor laser is monitored by a monitoring section, and this state is displayed by a light display section according to a deterioration state.