Ag Technology Co., Ltd.

Asahi Glass Company, Limited

Asahi-dow Limited

Tsuneo Wakabayashi

Yoshiharu Ooi

Yoshinori Hirai

Takashige Yoneda

Shigeyuki Serizawa

Yoshiyuki Sonda

Yukiko Takano

Satoshi Niiyama

Masaya Kunigita

Isamu Iwami

Takeshi Kawasato

Akira Yoshino

Kazuya Hiratsuka

Hiroshi Kumai

Fumiaki Gunji

Yoshiharu Kitahama

Sumitaka Nogami

Eiichi Oono

Takehiko Nishiyama

A projection type display apparatus comprising a light source apparatus which is provided with an elliptic mirror 12, a light source 11 disposed at the first focal point, a cone-like material disposed at the second focal point, a condenser lens 13, display elements 15R-15B, a color separating and synthesizing optical system, second condenser lenses 16R-16B and a projection lens 19. The cone-like material is one selected from the group of a convex cone lens, a concave cone lens 2, a convex cone-like reflector and a concave cone-like reflector 20. In the projection type display element, light emitted from the light source is introduced into the cone-like material and is emitted as divergent light through the conical surface of the cone-like material. The divergent light is introduced into the condenser lens 13 so that the light is rendered to be parallel light fluxes, which are color-separated and introduced into the display elements 15R-15B disposed for each color in order to form light fluxes of display colors. The light fluxes are again subjected to color synthesization, and the synthesized light is projected as a full color picture image on a screen through the projection lens 19. The projection type display apparatus provides a display having uniformity, a good contrast ratio and brightness.

Light source apparatus using a cone-shaped element and an applied

A projection type display apparatus has a light source optical system, a first filter (1), a first aperture (17), a condenser lens (13), a liquid crystal element (15) having a color filter for each pixel, a second aperture (18), a second filter (2), a projection optical system which form a schlieren optical system wherein first and second filters each composed of a spectral element for controlling each color of R, G and B are provided.

Projection type display apparatus

A light source optical system for projection 1, dichroic mirrors 21, 22 disposed to have a predetermined included angle .beta., a reflection type liquid crystal optical element blocks 31-33 each including a closely contacted converging lens and having a reflection surface and a projection optical system 4 are provided, wherein the normal line of a dichroic mirror surface and the optical axis of incident light form an included angle .alpha.; the normal line of the reflection surface and the optical axis of incident light form an included angle .gamma.; light emitted from a light source is color-separated so as to become color lights; the color lights are rendered to be parallel light beams, and are modulated and reflected by means of the reflection type liquid crystal optical elements; the reflected light beams are color-synthesized; and the color-synthesized light is projected through a projection lens. A projection type color liquid crystal optical apparatus having a compact shape and a high brightness is obtainable.

Projection type color liquid crystal optical apparatus

Light source apparatus using a cone-like material and an applied

A surface-treated substrate consisting essentially of a substrate having at least two treated surface layers wherein the first layer constituting the outermost layer among the treated surface layers is a layer obtained by treatment with a compound (I) capable of forming a surface having a contact angle of at least 70.degree. against water and the second layer constituting an underlayer in contact with the outermost layer is a layer obtained by treatment with at least one reactive silane compound (II) selected from the group consisting of isocyanate silane compounds and hydrolyzable silane compounds.

Surface-treated substrate

A surface-treated substrate consisting essentially of a substrate having at least two treated surface layers wherein the first layer constituting the outermost layer among the treated surface layers is a layer formed by treating with a treating agent containing a compound (I) capable of forming a surface having a contact angle of at least 70.degree. against water, and the second layer constituting an underlayer in contact with the outermost layer is a thin film layer of a heat resistant polymer formed by treating with a treating agent containing a compound (II) capable of forming a thin film of a heat resistant polymer and fine particles of a polymer, to form a thin film and heating the thin film to thermally decompose the fine particles of a polymer.

Surface-treated substrate and process for its production

A laser projection apparatus including a liquid crystal optical element of a transparent and scattering type having a liquid crystal and solidified matrix composite. A laser beam having a wavelength of approximately 1 .mu.m emitted from a laser beam source is supplied to the liquid crystal optical element, and a projection optical system operates for reduction-projection a laser beam emitted from the liquid crystal optical element onto an object. Further, with respect to a certain pixel of the liquid crystal optical element, there are overlapped portions between lead lines of a common electrode and lead lines of a segment electrode in the vicinity of the pixel, a width W.sub.1 (.mu.m) of the overlapped portion, a reduction projection ratio (projection by 1/N) and a gap d(.mu.m) between electrodes of the liquid crystal optical element satisfy the relation, W.sub.1 +d&lt;10.times.N. Further, the refractive index anisotropy .DELTA.n of the employed liquid crystal is 0.18 or higher, the viscosity .eta.(cSt) thereof is equal to or less than 60, the refractive index anistropy .DELTA.n, a means particle diameter R(.mu.m) of liquid crystal which is dispersed and held in a solidified matrix and the gap d(.mu.m) between electrodes satisfy the following relationships, (1) 0.5&lt;.DELTA.n.multidot.R&lt;1.3, and (2) 3.5&lt;.DELTA.n.multidot.d&lt;8.0. A multiplexed driving is employed for driving the liquid crystal optical element.

Liquid crystal optical element and a laser projection apparatus using

A liquid crystal display element comprises a liquid crystal and solidified matrix composite, in which liquid crystal is dispersed and held in a solidified matrix, which is interposed between a pair of substrates with electrodes at least one of which is transparent, wherein at least one of the substrates with electrodes has a fine concave-convex electrode surface at the side for the liquid crystal and solidified matrix composite.

Liquid crystal display element with electrode having concave-convex

A condensation polymer having a .eta.sp/C=0.1-1.5, containing an anthracene unit in the main chain of the polymer, which is found to have various functions of ultraviolet absorption, fluorescence emission, photoconductivity, organic semiconductor characteristics, etc. as well as excellent flexibility and mechanical strength, is prepared by condensation of an anthracenediol compound with a dicarboxylic acid dihalide or a hydrocarbylene dihalide.

Polynuclear fused aromatic ring type polymer and preparation thereof

A water repellent inorganic foam is prepared by foaming and setting a foamable composition comprising an aqueous metal phosphate in the presence of a specific compound having hydrophobic groups and functional groups reactive with said metal phosphate.

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Yokohama, Japan

Tsuneo Wakabayashi