Abstract:
There is provided polarizing glass having a high extinction ratio in a broad band. A manufacturing method of the polarizing glass containing elongated metal particles dispersed and oriented within glass includes an elongation step of forming mother glass after heat-treatment into a preform, of heating the preform at such temperature that the viscosity of the glass becomes about 1×108 to 1×1014 poise, of applying stress of about 200 kg/cm2 to 500 kg/cm2 to the preform while moving the preform within an electric furnace with feeding speed of 10 mm/min. or less and of elongating the preform as an elongated sheet with pulling speed of 150 mm/min. or less by which an aspect ratio of halogenated metal particles contained in the preform becomes from 2 to 1 to 100 to 1 and a reduction step of reducing the elongated sheet for enough time for transforming at least a part of the halogenated metal particles into metal particles at temperature higher than the strain point temperature of the mother glass and lower than the transition point temperature of the mother glass.
Abstract translation:在宽带中提供具有高消光比的偏光玻璃。 包含分散并定向在玻璃中的细长金属颗粒的偏光玻璃的制造方法包括在热处理之后将母玻璃形成预成型体的延伸步骤,以在玻璃的粘度变为约1×10 10 将大约200kg / cm 2的压力施加到500kg / cm 2以上的压力为8×10〜1×10 4, 预成型件,同时以10mm / min的进给速度在电炉内移动预成型件。 以及拉伸速度为150mm / min的伸长片材。 或更少,预成型体中所含的卤化金属颗粒的纵横比为2至1至100比1,还原步骤为将至少一部分卤化金属颗粒转化为金属颗粒足够的时间 在高于母玻璃的应变点温度的温度下,低于母玻璃的转变点温度。
Abstract:
A method for producing a polarizing glass wherein a glass preform containing metal halide particles having a prescribed particle size dispersed therein is heated to a prescribed temperature and elongated, to thereby form a glass sheet containing elongated metal halide particles, and then said metal halide particles are reduced to the metal, characterized in that the glass sheet having been heated and elongated is quenched and then subjected to an annealing treatment, and thereafter, the above metal halide particles are reduced to the metal. The method allows the removal of the stress which generates during the above heating and elongating treatment and residues in the glass sheet, without the reduction of the extinction ratio of the resultant glass sheet, which results in the production of a polarizing glass having good optical characteristics at a low cost.
Abstract:
There is provided a rear projection screen having a larger viewing angle in a diagonal direction than those in other directions in use. In a fly-eye lens having a plurality of lens units, a lens boundary where lens units adjoin each other has a rectangular shape analogous to an external form of the fly-eye lens and when image light parallel to a direction of an optical axis of the lens unit is incident on a lens face of the lens unit in using the fly-eye lens while orienting a short side of the rectangle in the vertical direction, a diffusion angle of the image light outgoing from the lens unit is larger in a diagonal direction of the rectangle of the external form of the fly-eye lens than those in the horizontal and vertical directions.
Abstract:
A motor drive circuit comprising, an amplifier which receives output signals of a Hall element for determining the phase of the rotor in a single phase DC motor and outputs the same after amplification; a drive signal generating circuit which receives the amplified signals of the amplifier, generates first and second pulses each having a duty of about 50% of which phases differ by about 180.degree. and outputs the same; a first drive circuit connected to a first terminal of the single phase DC motor and a second drive circuit connected to a second terminal of the single phase DC motor. The first and second drive circuits each including, a first transistor circuit which supplies a current to the single phase DC motor, a second transistor circuit which sinks a current from the single phase DC motor; and a diode which bypasses a current flown out from the single phase DC motor toward a power source line side.
Abstract:
An electroluminescence device is constituted by sequentially stacking a glass substrate, a transparent electrode, a luminescent layer, an interlayer containing a semiconductor having a band gap of 2.4 eV or more, a current-limiting layer containing a conductive powder, and a backplate.
Abstract:
A light control sheet capable of scattering an incident light of particular incident angle is produced by a method composed of preparing a film of a composition containing at least two photopolymerizable components having different refractive indexes, irradiating on the film a light from a particular direction, and obtaining a cured film of the light control sheet product. Such other light control sheets as capable of scattering a plurality of incident lights each of particular incident angle are obtained by modification of the above-mentioned method.
Abstract:
An apparatus for loading a planar subject at a predetermined position has holding means operative to hold one one of the planar subject at a predetermined level, and regulating means for detecting the thickness of the planar subject from the amount of operation of the holding means and regulating the level of the other end of the planar subject. This loading apparatus is suitably used in a pattern depicting apparatus.
Abstract:
A temperature protection circuit comprises means adapted to compare the temperature being monitored with each of threshold temperatures and judging that the temperature being monitored reaches a threshold temperature when the temperature being monitored is maintained at the threshold temperature or more for a predetermined confirmation period, means adapted to set a longer confirmation period as the threshold temperature compared with the temperature being monitored is lower, means adapted to generate one of corresponding temperature protection signals (Sarm, Slmt, Stsd1, Stsd2) according to the judgment of which threshold temperature the temperature being monitored reaches. With this constitution, temperature protection operation can be preformed with high accuracy and high safety without unnecessarily narrowing the range of the operating temperature of an IC to be protected.
Abstract:
A temperature protection circuit comprises means adapted to compare the temperature being monitored with each of threshold temperatures and judging that the temperature being monitored reaches a threshold temperature when the temperature being monitored is maintained at the threshold temperature or more for a predetermined confirmation period, means adapted to set a longer confirmation period as the threshold temperature compared with the temperature being monitored is lower, means adapted to generate one of corresponding temperature protection signals (Sarm, Slmt, Stsd1, Stsd2) according to the judgment of which threshold temperature the temperature being monitored reaches. With this constitution, temperature protection operation can be preformed with high accuracy and high safety without unnecessarily narrowing the range of the operating temperature of an IC to be protected.
Abstract:
A color display having a monochromatic light source, an optical switch and an array of pixels formed of anisotropically emitting photoluminescent material may be combined such that large losses often associated with color filter and polarizers are avoided such that a high efficient display results. The optical switch may be a liquid crystal device that is tuned to the wavelength of the monochromatic light source. The monochromatic light source may be made from OLED material that emits in the violet, near UV or blue spectrum and may be polarized. The array of pixels may include a transmissive pixel when the backlight spectrum is the same as the color of one of the pixels.