Abstract: An ultrasonic motor includes a circular stator having a piezoelectric element and a comb-tooth body having a plurality of comb teeth which are circumferentially arranged thereon, and a circular rotor having a rotation shaft, the circular rotor being in press-contact with the comb teeth of the circular stator. The circular rotor is provided with a projection which is in the press-contact with the comb teeth, wherein a width of the projection is smaller than a radial width of the comb teeth, and wherein a radial position of the projection varies along a circumferential direction of the circular rotor.

Abstract: A camera includes a dial body provided on a camera body to be manually rotatable; and a manual operation device, provided on the camera body separately from the dial body, for rotating the dial body.

Abstract: A digital camera includes a mirror box having a lens mount to which a photographing lens is mounted; an image pick-up device having an imaging surface for capturing an object image which is focused on the imaging surface through the photographing lens; and a frame positioned inside the digital camera body, the mirror box and the image pick-up device being mounted to the frame. The mirror box is mounted to a surface of the frame. The image pick-up device is mounted to the surface of the frame via at least one support member positioned between the mirror box and the image pick-up device. A ratio of a distance from the lens mount to the frame and a length of the support member is substantially equal to a ratio of a linear expansion coefficient of the support member and a linear expansion coefficient of the mirror box.

Abstract: An ultrasonic motor is provided with a circular stator including a piezoelectric element and a comb teeth body with a multitude of comb teeth circumferentially aligned thereon, and a circular rotor supported by a rotating shaft and pressed against the comb teeth body, wherein the comb teeth respectively include, at least in a portion thereof press-contacting the rotor, a plurality of pin-shaped elements radially aligned at a predetermined interval. The pin-shaped element is elastically deformable in a radial direction at least in a tip portion thereof, and has a predetermined rigidity in a circumferential direction.

Abstract: An ultrasonic motor includes a circular stator having a piezoelectric element and a comb-tooth body having a plurality of comb teeth which are circumferentially arranged thereon, and a circular rotor having a rotation shaft, the circular rotor being in press-contact with the comb teeth of the circular stator. The circular rotor is provided with a projection which is in the press-contact with the comb teeth, wherein a width of the projection is smaller than a radial width of the comb teeth, and wherein a radial position of the projection varies along a circumferential direction of the circular rotor.

Abstract: An ultrasonic motor is provided with a circular stator including a piezoelectric element and a comb teeth body and a circular rotor supported by a rotating shaft and disposed in close contact with the comb teeth body. The stator and the rotor are magnetized in opposite polarities to each other so that the stator and the rotor are brought into close contact by an attractive magnetic force generated therebetween in an axial direction.

Abstract: A camera includes a mirror box to which a photographing lens is mounted, an object image being formed on one of an image pick-up device and sensitive film via the photographing lens; a main frame, the mirror box being provided on the main frame; and a shock absorbing device. The one of the image pick-up device and the sensitive film is supported by the mirror box, and the mirror box is supported by the main frame via the shock absorbing device.

Abstract: A single-lens-reflex digital camera in which an optical image of an object that is to be photographed via a photographing lens is reflected by a main mirror to be formed on a focusing screen so that the optical image is viewed through a viewfinder while the main mirror is retracted from an optical path of the photographing lens to capture an image of the object by an image pickup device, the single-lens-reflex digital camera includes an electroluminescent display provided on the focusing screen, wherein the electroluminescent display displays at least the object image captured by the image pickup device. The single-lens-reflex digital camera is configured to allow the object image displayed by the electroluminescent display and the optical image formed on the focusing screen to be viewed through the viewfinder.

Abstract: An electroluminescent display device includes an electroluminescent display, and at least one switch which is positioned adjacent to an inner surface of the electroluminescent display, the switch being activated upon an outer surface of the electroluminescent display being pressed to resiliently deform the switch.

Abstract: A display screen device includes a display panel on which a first image is displayed, and an electroluminescent display which displays a second image and is positioned to extend substantially entirely over one surface of the display panel so that the first image and the second image can be selectively displayed and so that the first image and the second image can be displayed in a superimposed manner.

Abstract: A camera which includes a camera body includes a main body and a mirror box fixed to the main body. The mirror box and the main body are made of a first material having a first thermal expansion coefficient and a second material having a second thermal expansion coefficient, respectively, the second thermal expansion coefficient being smaller than the first thermal expansion coefficient. The mirror box is fixed to the main body by at least two fixing devices symmetrically disposed with respect to an optical axis.

Abstract: A digital camera includes an imaging device for capturing images of an object, a signal processor which performs signal processing on a signal captured by the imaging device to obtain an image signal, and a single measuring device for measuring color of at least a part of the object, and for measuring a color temperature of the object to adjust white balance of the image signal.

Abstract: A battery fixing structure used in a battery housing structure that houses a battery in a battery case and which makes terminals of the battery electrically contact with contact pieces provided in the battery case. The battery fixing structure comprises a fastening belt that is looped so as to fit around a periphery of the battery when one end of the fastening belt is pulled, while the other end of the fastening belt is fixed to the battery case.

Abstract: A battery case includes a box portion forming a battery chamber in which at least one short-length battery and at least one long-length battery can be selectively accommodated along a lengthwise direction of the box portion through an insertion opening thereof; a battery chamber lid for closing the insertion opening; at least one battery locking lug which is engaged with the long-length battery to lock the long-length battery in the box portion upon the long-length battery being inserted into the box portion; and at least one lock releasing piece which disengages the battery locking lug from the long-length battery when the battery chamber lid is opened from a closed state thereof.

Abstract: A digital camera including a detecting system to detect a vibration that occurs in a camera body, an image capturing element drive system, which is adapted to adjust a position of an image capturing element based on an amount of the vibration detected with respect to an optical axis of the camera body is provided. The image capturing element drive system includes a substrate, of which surface is perpendicular to the optical axis, an image capturing element board, which has the image capturing element thereon and is adapted to be driven in parallel with the surface of the substrate with a plurality of rolling support systems provided to the image capturing element board, a biasing system, which is adapted to bias the image capturing element board in a predetermined direction, and a drive system, which is adapted to drive the image capturing element board against biasing force of the biasing system.

Abstract: A digital camera is provided with a photographing lens, an image capturing element, which is configured to capture an optical image of an object formed by the photographing lens, a coarse movement control system configured to control a position of the photographing lens in a direction of an optical axis by a motor, and a fine movement control system configured to control a position of an image receiving area of the image capturing element in the direction of the optical axis is provided.

Abstract: A digital camera is provided with an imaging element including a plurality of pixels, a shutter unit capable of intercepting light transmitted from an object to the imaging element, and an optical low pass filter adapted to allow light with predetermined lower spatial frequencies to pass therethrough. The optical low pass filter is embedded in the shutter unit.

Abstract: A digital camera including an imaging device, which is adapted to store electric charges for each spectral color of a plurality of spectral colors from an object image and output image signals corresponding to the object image, is provided. The digital camera further includes a storage time controlling system, which is adapted to control length of storage time of the electric charges for each spectral color independently.

Abstract: A digital camera configured to carry out a strobe photographing is provided. The digital camera includes an imaging optical system, which forms an optical image of an object with its background, an image capturing system configured to capture the optical image of the object and the background, a color temperature sensor configured to detect a color temperature of the object and the background illuminated with external light, a white balance adjusting system configured to adjust a white balance of the image captured by the image capturing system, and a color temperature converting filter inserted in an optical path of light which passes through the imaging optical system to form the optical image when the strobe photographing is carried out. The color temperature converting filter converts the color temperature of the external light to a predetermined value.

Abstract: An electronic device includes a battery chamber; first through fifth contacts, positioned in the battery chamber; two detection switches which are turned ON only when two battery packs are accommodated in the battery chamber in the correct direction; a voltage detector capable of detecting first through sixth voltages between the first/second contacts, second/third contacts, third/fourth contacts, fourth/fifth contacts, first/third contacts, and third/fifth contacts, respectively; and a controller which allows either four cylindrical cells or the two battery packs to be used as the power source only if the two detection switches are ON when the fifth and sixth voltages are substantially the same, or if the two detection switches are OFF when the first, second, third and fourth voltages is greater than zero volts and that the first, second, third and fourth voltages are substantially the same.