Abstract:
Light emitted from either one or two light sources is converged by first and second lenses to illuminate a strip shaped area where an object with a bar code is disposed. Alternatively, the first and second lenses may be combined with one another to form a single, multi-functional lens.
Abstract:
A voltage regulator tube for an ignition system of an internal combustion engine, comprising: a cylindrical enclosure made of electrical insulating material and formed with a hollow extending therethrough; a first metallic sealing member for sealing one opening of the hollow, which is electrically connected to a secondary winding of an ignition coil; a first main electrode mounted on the first metallic sealing member in the hollow; a second metallic sealing member for sealing the other opening of the hollow, which is electrically connected to a spark plug; and a second main electrode which is mounted on the second metallic sealing member in the hollow such that the first and second main electrodes confront each other; wherein inert gas is hermetically filled in the hollow; wherein the following equation is satisfied:-1.5.ltoreq.0.8L-0.72R+3.11H-5.81.ltoreq.1.5where character L denotes a distance between distal ends of the first and second main electrodes in mm, character R denotes a diameter of the first metallic sealing member in mm and character H denotes a height of the first main electrode in mm.
Abstract:
Electric zoom camera wherein zooming speed is not influenced even by drop of power source voltage, by driving its zooming electric motor by an electric pulse current such that the period (T.sub.0, T.sub.1, T.sub.2, - - -) is defined by present period of a lens position signal "b" from a lens position detector (2) which consists of a photo-interrupter and a photo-coupler, and each of the period length is divided into a first portion (Po) (off-portion) wherein motor current is off and a second portion (Pd) (duty portion) wherein the motor current is on, the length of the first portion (Po) being adjusted responding to the present zooming speed obtained from the lens position signal outputted from the lens position detector (2).
Abstract:
A series connection of a reverse direction diode 10 and a main capacitor 2 is connected across both terminals of a DC power source 1. Another series connection of a strobe tube 3 and forward semiconductor switching device 9 is connected across both terminals of the DC power source 1. A forward diode 11 is coupled between the series connections. Charging the main capacitor 2 is accomplished by a circuit form the DC power source 1, the main capacitor 2, the forward direciton diode 11 and the semiconductor switching device 9: whereas, discharging the strobe tube 3 is made through the strobe tube 3, the semiconductor device 9 and the reverse direction diode 10. The semiconductor switching device 9 is controlled both by a charge control circuit 14 and a light adjusting circuit 8.
Abstract:
In a distance detecting apparatus comprising a light receiving sensor PSD which outputs two photo-currents which correspond to the incident angle of reflection of light reflected from an object lit by emitted comprising, an integral capacitor and a pair of logarithmic converters, a shift of the PSD away from the center of the optical axis can be easily compensated by simple electrical adjustment of constant current value of constant current source in a power source shifting circuit connected to one of the logarithmic converters.
Abstract:
A discharge lamp comprises a cylindrical glass bulb with an open bottom and a closed top of dome-shape or flat-shape, a base for holding an anode and a cathode with at least one separation plate for dividing an inner space of the bulb into plural spaces forming a folded discharge path, and the base is directly and airtightly bonded to the bottom opening of the bulb by heat softening of the bulb, and the anode and cathode are also airtightly fixed on the base by selectively melting down of a first adhesive and a second adhesive which each have different melting points.
Abstract:
Electronic flash equipment in the present including a Field Effect Transistor which is connected to a flash tube in series and a voltage control structure which controls the conductivity of the Field Effect Transistor by control of a voltage across the gate and the source of the Field Effect Transistor. A automatic light control and a high frequency repeating flash light radiation are realized by control of the voltage.
Abstract:
A driving circuit for a stepping motor drives the stepping motor in two-phase operation for most of the time period of driving and switches to a single-phase operation immediately before stopping the stepping motor, thereby achieving compatibility between high speed rotation and stable stopping position.
Abstract:
The present invention relates to an illuminated finder comprising illuminating windows through which light is entered for looking at an image of an object and a view frame, each window being disposed on an upper and front surface of a camera, and comprising a photographing information indicator being disposed on the upper surface of the camera, and comprising a transmitting window for detecting a distance, and therefore the photographing information and the view frame can be looked at easily from the outside of the camera and through an eye lens and a size of the illuminated finder can be compact.
Abstract:
In a photographic camera provided with an electronic flash unit comprising a strobo lamp, the strobo lamp part is raised up and down by means of a small electric motor and gear link when the brightness of the object scenery is dark at a pressing of shutter release button to a midway position. The raising up of the strobo lamp part is automatically done by detection of the scenery brightness and switching on of the motor by an electronic circuit. When the strobo lamp part reaches the raised position, a limit switch causes the electronic switch circuit to stop the motor.