摘要:
A focusing lens for adjusting the dioptric power in accordance with the user's dioptric power is provided in each of right and left lens barrels. When a main switch dial is set at a normal position, a microcomputer sets the focusing lens at a dioptric power of 0 by controlling a motor so that the focusing lens moves to a position corresponding to a dioptric power of 0.
摘要:
A redundant circuit for a memory circuit having a plurality of memory cell blocks, which includes a redundant memory cell block for a predetermined one of the memory cell blocks. There is a redundancy decoder for producing a redundant memory cell selecting signal, and a block selecting signal generating circuit. The output of the block selecting signal generating circuit is arranged to be controlled by the redundant memory cell selecting signal for the predetermined memory cell block so as to relieve a faulty memory cell block by the redundant memory cell block of the predetermined memory cell block.
摘要:
An apparatus for producing a variable configuration die by using a plurality of pins is disclosed. The apparatus comprises a pin storing device for storing the pins therein; a pin piling device in which the variable configuration die is to be produced; a robot device for transferring the pins from the pin storing device to the pin piling device for making up the variable configuration die; and a computer-aided control device for controlling the robot means in such a manner that the pins carried by the robot means are placed onto given positions of the pin piling device to cause the variable configuration die thus made of the piled pins in the pin piling device to have a layered structure. The variable configuration die thus made up has a recessed die surface which is defined by one ends of the piled pins.
摘要:
A measurement cell (40a) is formed so as to extend in a direction along which a centrifugal force is applied, and a capillary area (47a) to which a sample liquid is sucked by a capillary force is formed on one of the side walls of the measurement cell (40a), the side walls being arranged in a rotational direction. The capillary area (47a) extends from the outer periphery position to the inner periphery of the measurement cell (40a), thereby reducing the size of an analyzing device. Further, the sample liquid in the measurement cell (40a) is sucked to the capillary area (47a) by slowing or stopping a rotation, and then the rotation is accelerated to return the sample liquid in the capillary area (47a) to the measurement cell (40a). It is therefore possible to achieve a sufficient agitating effect and conduct measurement with a small quantity of sample liquid.
摘要:
An image display apparatus is provided with a screen having retro-reflectivity, a liquid crystal display device displaying an image, a projection optical system projecting the light of the liquid crystal display device onto the screen, and a beam magnifier located close to the screen and magnifying the light beams, included in the projected light, expressing individual points of the image. The beam magnifier is composed of a diffraction optical element or a diffusing plate, and magnifies each light beam so that the magnification is larger in the direction of the horizontal field of view than in the direction of the vertical field of view. When images having parallax are provided for the left and right eyes, an upper limit of the magnification of the light beams is set in consideration of the distance between the left and right eyes to prevent cross-talk.
摘要:
A camera is provided with a varifocal lens including a zoom lens system driven by a motor and by a zoom lens drive control section and a focusing lens system driven by a motor and by a focusing lens drive control section for performing focusing before the zoom lens system is driven or while the zoom lens system is being driven. The camera is also provided with a lens switch sensor for determining whether an operation member for starting an exposure operation has been operated or not and a body control section and a lens control section for halting the driving of the zoom lens system when it is determined that the operation member has been operated by the sensor to re-start the driving of the focusing lens system.
摘要:
A film winding/rewinding mechanism of a camera driven by an ultrasonic wave motor. The winding driving section includes a cylindrical spool and a cylindrical first ultrasonic wave vibrator provided in the spool. A roller urged by a leaf spring is pressed against the peripheral surface of the spool, so that the peripheral surface of the vibrator contacts the inner surface of the spool at a point in the circumferential direction thereof. The film rewinding driving section includes a film rewinding fork, a cylindrical member mounted on the periphery of the rewinding fork, and a cylindrical second ultrasonic wave vibrator provided between the rewinding fork and the cylindrical member. The diameter of the outer circumference of the second ultrasonic wave vibrator is greater than the diameter of the outer circumference of the first vibrator. In winding/rewinding the film, the cylindrical member is urged by the tension of the film, so that the peripheral surface of the cylindrical member contacts the peripheral surface of the second vibrator contacts at a point in the circumferential direction thereof. In winding the film, a voltage is applied to the first vibrator to rotate the spool. In rewinding the film, a voltage is applied to the second vibrator to rotate the fork.
摘要:
A timer circuit is provided including a self-holding circuit that includes a reset delay circuit for delaying an input pulse by a prescribed time. The output of the self-holding circuit is caused to fall by the rising edge of the input pulse and to rise by the falling edge of the input pulse or the rising edge of a pulse fed back through the reset delay circuit whichever occurs last. Since the pulse duration can be stretched up to a length equal to the reset delay time by the action of the self-holding circuit, the possibility of the input pulse being split through a pulse stretching circuit is eliminated.
摘要:
A reflex camera capable of automatic focus adjustment comprises a motor for driving a lens used for focus adjustment, an electromagnet for lifting-up a mirror to expose a film at the time of shutter release, a battery for operating the motor and the electromagnet, and a controller for controlling power supply such that the power is supplied to the magnet after the lens is moved by the motor to a position such as an in-focus point. Since the power is supplied to the electromagnet after the completion of power supply to the motor, there is no possibility of malfunction of the electromagnet.