Abstract: A display optical system for guiding light from an original picture to an eye of an observer or a surface to have an image projected thereon is provided with a first optical system and a second optical system. The first optical system is provided with a first surface that is formed on a transparent body and has at least a reflecting action, a second surface for reflecting light reflected on the first surface toward the first surface again, and a third surface that is formed on the transparent body in the same manner as the first surface and transmits the light from the original picture. The light transmitted through the third surface travels toward the first surface and reflected for the first time on the first surface. In addition, a principal ray at central angle of view to be reflected for the last time on the first surface is reflected and travels to a side opposite to a side of the first reflection on the first surface with respect to a normal line of a surface on a hit point thereof.

Abstract: An area having a diameter in which a peripheral area of an eye fundus image is covered with a mask is displayed on a monitor. When a region which may be abnormal is found in the vicinity of a boundary between the mask and the eye fundus image during image viewing, the display area enlarging means is operated. Then, an aperture area of the mask is enlarged to expand a display area of the eye fundus image, so the eye fundus image including some flare is displayed on a wide area. Therefore, an abnormal state of the region can be recognized.

Abstract: The lighting and/or signaling system according to the invention comprises at least one lighting and/or signaling device which is able to emit at least one light beam and is equipped with at least one actuator for adjusting an angle of the light beam, and at least one actuator control device for controlling the actuator. According to the invention, the actuator control device transmits an active setpoint information item to the actuator only when a current value of the setpoint information item differs substantially from a previous value of the setpoint information item. The improved actuator control incorporated in the system according to the invention helps to achieve greater reliability and a longer service life.

Abstract: In an image sensing apparatus which uses a solid-state image sensing device, it is an object of the present invention to minimize smear. In order to achieve the object, a solid-state image sensing apparatus includes a solid-state image sensing device, a calculation unit which calculates a signal correction amount from an output signal from the solid-state image sensing device, an indication unit (even_odd_flag) which indicates whether the above output signal is output from an even-numbered line or odd-numbered line of the solid-state image sensing deice, the first correction unit which corrects the signal correction amount in accordance with the output from this indication unit, and the first subtraction unit which subtracts, from the above output signal, the signal correction amount corrected by the first correction unit.

Abstract: An autofocus lens apparatus is disclosed which is capable of changing a focus target area in position and size without degrading the operability of manual focusing when taking images with an autofocus function. The autofocus lens apparatus comprises an operating member which is placed outside a lens barrel and movable to change the focus target area, a detector which detects the movement of the operating member, and a controller which changes at least one of the position and size of the focus target area on the basis of a signal from the detector.

Abstract: A lens apparatus is disclosed, in which the MF operation can be performed at any time during the AF operation. The lens apparatus comprises a lens system including a front focusing lens, a magnification-varying lens and a rear focusing lens, a first operating member, and a second operating member. The front focusing lens is driven for manual focus in accordance with the operation of the first operating member in the first mode, the rear focusing lens is driven for automatic focus in the second mode. The focus mode is switched from the second mode to the third mode in accordance with the operation of the second operating member. The rear focusing lens is driven in accordance with the operation of the second operating member in the third mode.

Abstract: It is an object of the present invention to provide a variable gain amplifier circuit operable with a low power supply voltage and with less noise generated inside the circuit. In the variable gain amplifier circuit, a third MOS transistor is connected between the respective sources of two MOS transistors constituting a differential amplifier circuit and to the gate of the third MOS transistor, and a DC bias voltage for operating the third MOS transistor in a non-saturated region is supplied. If the output voltage of an AM intermediate frequency variable gain amplifier circuit increases, a control voltage for reducing the resistance between the source and drain of the third MOS transistor is applied to reduce the gain of the AM intermediate frequency variable gain amplifier circuit.

Abstract: An automatic correction method for a direct exposure apparatus illuminates two exposure elements, which are included in adjacent exposure heads separately and which are to expose an identical line on an exposure target, among exposure elements arranged in a two-dimensional manner with an inclination of relative movement of an exposure target in a plurality of exposure heads arranged in the direction of the relative movement of the exposure target; detects the illumination of the two exposure elements by using a sensor board (11) that is moved, on the side where the exposure heads are illuminated, in the direction in which the exposure heads are arranged; and calculates correction amounts for correcting so that the two exposure elements can expose the identical line mentioned above, based on a detection result of the illumination of the exposure elements by the sensor board (11).

Abstract: In a case of right and left eye fundus image sensing in a mass health examination, the alignment of an anterior segment of an eye to be examined is performed first (S101). When the alignment of the anterior segment of eye is completed, image sensing light intensity is set (S102). The alignment of a fundus segment of the eye to be examined is performed (S103). Furthermore, an image of the fundus of the eye to be examined is sensed by a sensing switch being pushed after the completion of focus adjustment (S104). Next, an optical base unit is moved so that the image sensing of another eye can be performed (S105). A left or right eye detection unit detects that an eye for image sensing is changed with the move of the optical base unit. When the eye for image sensing is changed, an image sensing light intensity setting unit sets image sensing light intensity by adding a predetermined amount, or changing the sets image sensing light intensity according to a diameter of a pupil (S106).

Abstract: Disclosed is a measuring method which can measure the decentering of an axis by the measurement of a two-dimensional curved surface profile. This method has a first step of measuring a profile of a examined surface by a probe from a first reference position which is a position separate by a predetermined amount from a predetermined position on the examined surface of a subject lens, a second step of measuring the profile of the examined surface by scanning the examined surface by the probe from the second reference position which is a position separate by a predetermined amount from said predetermined position in a route opposite to the scanning direction of said first step after a rotation of the subject lens; and the step of obtaining the decentering amount of the examined surface by the use of the measurement results obtained at the first and second steps.

Abstract: An image sensing apparatus having an electronic shutter for controlling the charge accumulation time of an image sensing element and a mechanical shutter for releasing/shielding an optical path to the image sensing element includes an electronic shutter mode of controlling the image sensing time mainly by the electronic shutter and a mechanical shutter mode of controlling the image sensing time mainly by the mechanical shutter. In the electronic shutter mode, the operations of the electronic and mechanical shutters are controlled to overlap each other, and a charge reading period of the image sensing element and part of a release operation period of the mechanical shutter are controlled to overlap each other.

Abstract: A display apparatus includes a matrix display panel including scanning lines and signal lines disposed so as to form pixels each at an intersection of the scanning and signal lines, and a drive circuit for applying a voltage to the scanning and signal lines, the drive circuit generates a signal voltage depending on an image data inputted externally and applies the signal voltage to the signal lines while sequentially applying a selection voltage to the scanning line to effect writing of an image in the display panel. The drive circuit has a correction function of correcting a signal voltage depending on an image data in current image writing, at the time of image writing to the display panel, on the basis of a signal voltage in preceding image writing and an elapsed time from the preceding image writing, thereby to apply the corrected signal voltage to the signal lines.

Abstract: A semiconductor device, comprising a semiconductor nanowire having a first region with one of a PN junction and a PIN junction and a second region with a field effect transistor structure, a pair of electrodes connected to both ends of the semiconductor nanowire, and a gate electrode provided in at least a part of the second region via an insulating layer. The semiconductor nanowire has a P-type semiconductor portion and an N-type semiconductor portion, and one of the P-type semiconductor portion and the N-type semiconductor portion is a common structural element of both the first and second regions.

Abstract: An image blur compensation apparatus includes first and second driving units (17a, 17b, 16a, 16b) having functionally equivalent members each other. A resultant force which acts on a holding unit (12) when in-phase driving signals of the same amount are applied to the first and second driving units differs in magnitude from a resultant force which acts on the holding unit when reverse-phase driving signals of the same amount are applied to the first and second driving units. The first and second driving units are arranged such that these resultant forces become perpendicular to each other.

Abstract: An image-taking apparatus is disclosed which is capable of adjusting a positional displacement of an image-taking optical system and an image-pickup element even in a state in which they are fixed. The image-taking apparatus includes the image-taking optical system including an offset lens unit movable in a direction orthogonal to an optical axis, the image-pickup element and a memory which stores adjustment data. The adjustment data is data on a movement amount of the offset lens unit to make light amounts in peripheral parts on the image-pickup element substantially homogeneous in a case where an object has a surface with approximately homogeneous luminance.

Abstract: An industrial vehicle includes a vehicle body, a hood provided on the vehicle body and operable to open and close, an operator's seat provided on the hood, a plurality of pillars erected on the vehicle body for supporting a headguard that covers above the operator's seat and an armrest provided at a side of the operator's seat such that the armrest is pivotable relative to the operator's seat or the hood on a pivotal axis in a longitudinal direction of the vehicle body. The pivotal axis has a first end adjacent to the operator's seat and a second end distant from the operator's seat. The pivotal axis is set such that the first end is located forward of the second end and/or such that the first end is located lower than the second end.