摘要:
An image reader is adapted to read an image represented on a document. The image reader comprises a reading unit, an LEDs driving circuit, and means for moving the reading unit and the document relatively. The above reading unit comprises an LEDs array arranged in a straight line as light sources, a rod lens array for guiding the light emitted from each LED of the LEDs array and focusing the light on the document, and a pair of photosensors being disposed in parallel and connected in parallel with respect to each other for converting a reflected light from the document to a photocurrent. And each LED of the LEDs array is turned on only one at a time sequentially by means of the LEDs driving circuit, then the reading of the document is effected by means of the photosensors.
摘要:
An optical modulating element for time division driving having an electrode structure comprising a plural number of signal electrodes and a plural number of line electrodes arranged so as to confront the signal electrodes to form a matrix, and a liquid crystal arranged between said signal electrodes and line electrodes, wherein the electrostatic capacitance between said plural number of line electrodes is made 1000 PF (picofarad) or lower.
摘要:
An optical modulator having a layer of optical modulating substance between a pair of electrode-supporting plates is provided, which is characterized in that at least one of the electrode-supporting plates is provided with a mark for registration and the other substrate is provided with a projection for registration at the position corresponding to that of the mark for registration.
摘要:
A liquid crystal element comprising a liquid crystal between a pair of electrode-supporting plates, wherein at least one of the electrode-supporting plates is provided with a light-intercepting mask which is formed from a water-soluble resin and colored, on the area other than the pattern electrode area.