摘要:
A gas adsorbing column filled with a filler composed of an adsorbent supported on a substrate having an average particle size or cross-sectional average diameter of 500 μm to 1000 μm, wherein the void volume of the column is 5 to 100 μl.
摘要:
A projection display apparatus that is lightweight and provides bright, high quality images is provided. The projection display apparatus comprising a color separation and synthesis optical system 4, that performs color synthesis, generating an image, after separating light of the three primary colors of determined polarities into the respective three colors, and modulating those three color lights in relation to respective image signals therefor, and a projection lens 106. The color separation and synthesis optical system 4 comprises polarized light separating means 8, 9, 11 and 16 disposed in respective diagonal directions therein and reflecting spatial light modulating elements 12, 13 and 14 disposed to perform light modulation coordinated to an image signal for each respective color, for light separated according to polarization by the four polarized light separating means 8, 9, 11. Three spatial light modulating elements 12, 13 and 14 are disposed on the outer side of the polarized light separating means 9, 11 and 16, other than the polarized light separating means 8, that is disposed on that side of incident light, at least two from among the four polarized light separating means 8, 9, 11 and 16 are wire grid polarized light separating plates and an astigmatism correcting lens 21 is provided between the polarized light separating means 16 disposed on that side at which projection is performed and at least one of the spatial light modulating elements.
摘要:
Olefin block copolymers (A-1) are disclosed represented by the formula (I) PO1-g1-B1 . . . (I) wherein PO1 is a segment comprised of repeating units derived from an olefin having 2 to 20 carbon atoms, g1 is an ester, ether, amide, imide, urethane, urea, silylether or carbonyl linkage, and B1 is a segment containing an unsaturated hydrocarbon or a hetero atom. The olefin block copolymers are suitable for uses in adhesives, various molded articles such as construction and civil engineering materials, automobile interior and exterior materials, gasoline tanks, electric and electronic parts, medical care and sanitation materials, materials of miscellaneous goods, resin materials having environmental degradation properties, films and sheets, modifiers and dispersions.
摘要:
In a preferred embodiment of the present invention, white light emitted from a light source is homogenized by an integrator optical system; the R and the G light component of the white light becomes P polarization light as the white light passes through a color polarizer; and then the G light component is converted into P polarization light while the R light component remains unchanged as the G and the R light pass through another color polarizer. Then, the G and the R light are light-modulated respectively by reflection type spatial light modulation elements for the G and the R light, the elements being disposed so that they have a different distance from a polarizing split face of a polarizing beam splitter. The G light that has been light modulated passes through a lens causing an axial chromatic aberration corresponding to the distance difference and thus exits therefrom.
摘要:
A relay optical system is disclosed that comprises, in axial order from the object side, first, second, third, and fourth lens groups having a negative, a positive, a positive, and a negative refractive power, respectively. An aperture stop is between the second and third lens groups. Relative to the aperture stop, the first lens group is symmetrical with the fourth lens group and the second lens group is substantially symmetrical with the third lens group. The relay optical system fulfills at least the conditions:-0.3
摘要:
The present invention provides a video projector equipped with a projection lens system having only one optical axis for projecting a plurality color images displayed on a plurality of CRTs. The color images displayed on the CRTs 2R, 2B and 2G are respectively focused onto a writing side of respective spatial light modulators 4R, 4G and 4B through a plurality of writing lens 3R, 3G and 3B. On the other hand, a light from a reading light source 5 is divided into 3-color lights of R, G and B by a cross-type 3-color separation member 25. The three color lights are respectively inputted into a reading side of the respective spatial light modulators through a plurality of polarization beam splitter blocks 26R, 26G and 26B each having a pair of dielectric multiple layers 26a, 26b disposed parallel to each other. A plurality of reading light outputted from the spatial light modulators are synthesized and outputted as a composite color light by a cross-type 3-color composition member 28 so as to be projected with a magnification onto a screen by the projection lens system.
摘要:
A polymer composition comprising (A) 100 parts by weight of a cyclo-olefinic random copolymer comprising an ethylene component and a cyclo-olefin component and having an intrinsic viscosity [.eta.] of 0.05 to 10 dl/g, a glass transition temperature (Tg) of 50.degree. to 230.degree. C., and a softening point of at least 70.degree. C., (B) 5 to 150 parts by weight of at least one flexible polymer having a glass transition temperature of not more than 0.degree. C. and (C) 0.004 to 1.0 part by weight of an organic peroxide and its reaction product.
摘要:
In an optical disc apparatus, when a signal to be generated corresponding to an amount of reflected light from an optical disc has a signal level below a threshold level for a period exceeding a reference period, a controller controls an actuator to move an objective lens in a direction such that a distance from the optical disc surface to the objective lens increases. The reference period may be set based on a type of the optical disc and a recording or reproducing speed of the optical disc, or based on a surface deflection of the optical disc.
摘要:
An image displaying apparatus is capable of maintaining the contrast ratios of displayed images even if the f-value of an optical system of the apparatus is lowered to provide bright images, efficiently utilizing a beam from a light source, minimizing the size and weight of the optical system, and being easy to manufacture. The image displaying apparatus includes first to third reflective polarizing plates (120, 121, 122) provided for first to third reflective spatial light modulators (130, 131, 132), respectively. The reflective polarizing plates polarize and separate beams to be injected into the reflective spatial light modulators. In the image displaying apparatus, a color separating optical system has a larger effective diameter than a color composition prism (140).
摘要:
An object of the invention is to provide a resin composition which is excellent in flame-resistance effect, good in flexibility/softness, and high in whiteness, and a molding thereof, in particular, an electric wire insulator and/or sheath. The present invention is a thermoplastic resin composition, in which in the case of using samples of an insulated electric wire 3.0 mm in finishing diameter wherein the periphery of a conductor (1.35 mm in outer diameter) made of seven twisted soft copper wires each having a diameter of 0.45 mm is coated with the thermoplastic resin composition of 0.8 mm in thickness to carry out a flame-resistance test at flame-resistance test angles θ of 45°, 60°, and 90°, the maximum angle A out of the flame-resistance test angles θ at which the samples are spontaneously extinguished within 60 seconds from the ignition thereof satisfies the following expression (1): A≧1.8×σ+13.4 (1)