Abstract: A reflecting film is made by forming resin layers on both sides of a metal thin film, and using a colorless, transparent, and optically isotropic material at least in one resin layer. A reflecting film is made by forming a metal thin film on one side of a resin film, and forming a colorless, transparent, and optically isotropic resin coat layer on its surface by printing or other method. A mirror having such a reflecting film is mounted on a frame. A projection type image magnifying apparatus for liquid crystal panel and a projection type image magnifying apparatus for CRT, improved in resolution and contrast ratio, is obtained by using such mirror as an image reflecting mirror.

Abstract: A reflecting film is made by forming resin layers on both sides of a metal thin film, and using a colorless, transparent, and optically isotropic material at least in one resin layer. A reflecting film is made by forming a metal thin film on one side of a resin film, and forming a colorless, transparent, and optically isotropic resin coat layer on its surface by printing or other method. A mirror having such a reflecting film is mounted on a frame. A projection type image magnifying apparatus for liquid crystal panel and a projection type image magnifying apparatus for CRT, improved in resolution and contrast ratio, is obtained by using such mirror as an image reflecting mirror.

Abstract: A reflecting film is made by forming resin layers on both sides of a metal thin film, and using a colorless, transparent, and optically isotropic material at least in one resin layer. A reflecting film is made by forming a metal thin film on one side of a resin film, and forming a colorless, transparent, and optically isotropic resin coat layer on its surface by printing or other method. A mirror having such a reflecting film is mounted on a frame. A projection type image magnifying apparatus for liquid crystal panel and a projection type image magnifying apparatus for CRT, improved in resolution and contrast ratio, is obtained by using such mirror as an image reflecting mirror.

Abstract: A reflecting film is made by forming resin layers on both sides of a metal thin film, and using a colorless, transparent, and optically isotropic material at least in one resin layer. A reflecting film is made by forming a metal thin film on one side of a resin film, and forming a colorless, transparent, and optically isotropic resin coat layer on its surface by printing or other method. A mirror having such a reflecting film is mounted on a frame. A projection type image magnifying apparatus for liquid crystal panel and a projection type image magnifying apparatus for CRT, improved in resolution and contrast ratio, is obtained by using such mirror as an image reflecting mirror.

Abstract: A permeable screen possesses superior brightness, high contrast, wide view angle, excellent contrast to external light, superior clearness, and less reflection of external light image. The permeable screen includes a front dispersing panel and a lenticular lens sheet disposed at the incident side of the front dispersing panel and forming plural lens surfaces. The permeable screen also includes a Fresnel lens sheet disposed at the incident side of the lenticular lens sheet and forming plural lens surfaces. The front dispersing panel functions as a screen and also provides mechanical strength. The front dispersing panel also possesses parts for mounting and fixing the lenticular lens sheet and Fresnel lens sheet.

Abstract: A light transmission screen having strong mechanical strength, enhanced image resolution, extremely narrow joints between screens and the like, consisting of a light transmissive panel, a lenticular lens sheet stacked on the light incident side of the light transmissive panel, a Fresnel lens sheet stacked on the light incident side of the lenticular lens sheet and optionally a light transmissive film stacked on the light incident side of the Fresnel lens sheet. The periphery of the light transmissive film or the periphery of the Fresnel lens sheet is joined to the light transmissive panel, resulting in the light transmissive panel, lenticular lens sheet, Fresnel lens sheet and light transmissive film being formed into a single-piece construction.

Abstract: The present invention makes it possible to improve color shift, shading and view angles, to prevent external light absorption and reflection, to enhance external light contrast, to eliminate reflection of external images that appear on a light transmission screen's face plate, and to provide distinct pictures free of the adverse effects of dust. The light transmission screen disclosed by the present invention comprises a Fresnel lens sheet, a transparent lenticular lens sheet arranged on the Fresnel lens sheet's radiant light side and a front diffusion panel formed of a thin diffusion layer and a transparent layer and arranged on the lenticular lens sheet's light radiant side.

Abstract: The present invention makes it possible to improve color shift, shading and view angles, to prevent external light absorption and reflection, to enhance external light contrast, to eliminate reflection of external images that appear on a light transmission screen's face plate, and to provide distinct pictures free of the adverse effects of dust. The light transmission screen disclosed by the present invention comprises a Fresnel lens sheet, a transparent lenticular lens sheet arranged on the Fresnel lens sheet's radiant light side and a front diffusion panel formed of a thin diffusion layer and a transparent layer and arranged on the lenticular lens sheet's light radiant side.

Abstract: The present invention provides a bright light transmission screen and light diffusion panel. Am amtireflective film is disposed on the surface of a lenticular lens sheet substrate included in a light transmission screen. The antireflective film is made from a high polymer compound of a low refractory index and has a thickness that is different from .lambda./(4n). The antireflective film may also be disposed on a Fresnel lens sheet substrate or a light diffusion panel substrate.

Abstract: The present invention provides a screen assembly wherein measures are taken to prevent slack produced in a lenticular lens sheet due to temperature changes and gaps created between a Fresnel lens sheet and the lenticular lens sheet due to temperature changes, thereby enabling the display of images free of inconsistencies in color. The structure of the screen assembly has the lower parts of a lenticular lens sheet and a Fresnel lens sheet comprising a screen fixed together, the upper part of the light radiant side of the lenticular lens sheet fixed to the upper part of a framework, the lower part of the screen, where the Fresnel lens sheet and the lenticular lens sheet are put together not being fixed to the lower part of the framework and a specified clearance created between the lower part of the screen and the lower part of the framework.

Abstract: A lenticular lens provided on the viewer side of a transmission type screen is composed of at least two layers, that is, a surface layer and a base layer at least one of which contains a light dispersing material, and a visible light absorbing material is mingled in at least one of these two layers, or in the light dispersing material, thereby enhancing the image contrast of the transmission type screen.

Abstract: Provided is a method for making a thin film on a lens holder to reduce a reflection of light caused by an index difference between a refractive index of air and a refractive index of a lens-barrel of the lens holder. The thin film is formed by dipping the lens holder into a solution of a solvent and a fluororesin compound or by dripping the solution onto the lens holder. The lens holder is removed from the solution. Then, the solvent is removed to thereby form a thin film of the fluororesin compound on the lens holder.

Abstract: A permeable screen possesses superior brightness, high contrast, wide view angle, excellent contrast to external light, superior clearness, and less reflection of external light image. The permeable screen includes a front dispersing panel and a lenticular lens sheet disposed at the incident side of the front dispersing panel and forming plural lens surfaces. The permeable screen also includes a Fresnel lens sheet disposed at the incident side of the lenticular lens sheet and forming plural lens surfaces. The front dispersing panel functions as a screen and also provides mechanical strength. The front dispersing panel also possesses parts for mounting and fixing the lenticular lens sheet and Fresnel lens sheet.

Abstract: A lenticular lens provided on the viewer side of a transmission type screen is composed of at least two layers, that is, a surface layer and a base layer at least one of which contains a light dispersing material, and a visible light absorbing material is mingled in at least one of these two layers, or in the light dispersing material, thereby enhancing the image contrast of the transmission type screen.

Abstract: In a lens-barrel etc. for holding lenses, a thin film composed of a fluororesin compound having a refractive index lower than that of a material constituting the lens-barrel is formed on an inner surface of the lens-barrel, thereby lowering an amount of the reflective light appeared on the inner surface of the lens-barrel.

Abstract: A projection television has a rear projection screen including a Fresnel lens and a lenticular lens, and a smoke sheet. The screen is characterized in that a dye or a pigment is mixed into the lenticular lens sheet or the smoke sheet which thereby has a waveform selection transmittance having the following transmittance values:.gtoreq.65% when incident light wavelength is <490 nm..ltoreq.60% when incident light wavelength is 490 nm-660 nm.wherein the transmittance, for incident light wavelength 490 nm-580 nm., is substantially different from the transmittance when the wavelength is 580 nm.-660 nm.

Abstract: A transmission-type video projection television system employs a transmission-type screen for displaying an image projected from a rear projector for visual observation by an observer in front of the screen. The transmission-type screen has Fresnel and lenticular lenses, one of which has an electrically conductive layer or a metal member on its surface to prevent the lens from being electrostatically charged, so that dust or dirt particles will not be attracted to the screen.

Abstract: In a video projector for projecting video images on phosphor screens of cathode ray tubes to a screen, a refrigerant mixture of ethylene glycol, diethylene glycol and glycerine is filled in watertight spaces enclosed by the cathode ray tubes, radiators and projection lenses.

Abstract: A projection lens for projecting the visual image of the cathode ray tube apparatus (CRT) consists of plastic lens elements, at least one glass lens element which absorbs X-rays from the CRT, and a body tube made of plastic material containing X-ray shielding material such as PbO, Zn, BaSO.sub.4, Pb-Sn alloy or the like.

Abstract: An injection compression molding apparatus has a mold unit having a stationary die plate and a movable die plate movable toward and away from the stationary die plate with mold plates therebetween defining a mold cavity into which an injection nozzle is directed, a supporting plate, a main cylinder supported on the supporting plate and a main cylinder ram having the outer end connected to the movable die plate for moving the movable die plate between a position in which the mold is fully closed and a position in which the mold is open to permit discharge of a molded product, and a compression stroke setting device for setting the position of the movable die plate at a position spaced a distance away from the fully closed position corresponding to a desired compression stroke of the mold.