Abstract: To prevent decline of visibility due to fluctuation in the number of unit reflection regions in a reflective display. In a reflective display comprising a liquid crystal display, and a reflective plate for reflecting the light passing through the liquid crystal display, the liquid crystal display has plural openings, the reflective plate has plural unit reflection regions, and the array pitch r of the unit reflection regions and the array pitch p of the openings of the display satisfy the relation of r=p/m (where m is a natural number).

Abstract: A reflective plate is offered which is capable of forming an exit region of reflected light in an effective field of view area in an obliquely above or below position. The reflective plate has plural reflective subregions each having reflective surfaces for reflecting light. Light rays reflected from the reflective subregions form plural spreads of exit which intersect each other at a given upper position to thereby form a common exit region. The reflective subregions are so arranged that light entering the reflective plate from a vertical direction is reflected by the reflective subregions substantially toward the center of the exit region lying outside a region that is vertically above the reflective plate. The centers of the intensities of the reflected light rays concentrate at the center of the exit region.

Abstract: In a reflective type liquid crystal display unit which is provided with a reflective plate, there is provided a reflective liquid crystal display unit free from color mixture by preventing color mixing of reflected light is presented. The unit includes a substrate, a reflective layer disposed on the substrate, and a color filter, wherein the reflective layer has a plurality of reflective unit regions each of which has a first reflective surface for reflecting a light in a predetermined direction, and an inclination angle of the first reflective surface is defined so that an incident light which passes through a pixel of a determined color of the color filter to enter the first reflective surface is reflected by the first reflective surface to pass through the pixel of the same color as the color through which the incident light of the color filter has passed.

Abstract: There is provided a manufacturing method of an optical device having a micro-asperity pattern that has various kinds of accurate three-dimensional shapes and is realized as thin films. A substrate is coated with a resin thin film made of a photosensitive resin, and the temperature of the resin thin film is controlled so as to be lower than the photosensitivity extinction temperature of the resin thin film. A micro-asperity pattern of a stamper is pressed against the resin thin film when the resin thin film is in a softened or melted state by pressurizing means, whereby a micro-asperity pattern is formed on the surface of the resin thin film.

Abstract: A method for manufacturing an optical device is disclosed. The method includes coating a substrate with a resin thin layer, wherein temperature of the resin thin layer is controlled lower than a polymerization reaction starting temperature thereof and the resin is not substantially polymerized, heating the resin thin layer to a temperature higher than polymerization reaction starting temperature and glass-transition temperature but lower than a thermal decomposition starting temperature of the resin so that the resin thin layer is polymerized on the substrate to form a resin thin film thereon, pressing a stamp having an inverted micro-asperity pattern against the resin thin film such that a micro-asperity pattern is formed on a surface of the resin thin film; cooling the resin thin film to a temperature lower than the glass-transition temperature; and separating the stamp from the resin thin film.

Abstract: A cylindrical embossment roll whose outer circumferential surface is formed with a micro-asperity pattern is prepared. A substrate is coated with a thin resin film. The substrate is held by a transfer stage, and a micro-asperity pattern is formed on the thin resin film by pressing the outer circumferential surface of the embossment roll against the thin resin film with a pressurizing mechanism while rolling the embossment roll on the thin resin film.

Abstract: In a reflection type display apparatus in which a forward lightening apparatus is arranged in front of a reflection type display panel, lowering of contrast occurred when the forward lightening apparatus is turned ON is prevented. In this reflection type display apparatus, the forward lightening apparatus is adhered via an adhesive layer to a front surface of the reflection type display panel having a reflection plane. The reflection plane is constituted by a large number of first very fine patterns having a spherical shape, and a large number of second very fine patterns whose front surfaces are inclined. External light which is vertically entered into the front surfaces is reflected by the first patterns, and thereafter, the reflected external light is projected as a display along a forward direction. The forward lightening apparatus is arranged by providing a light source on a side surface of a light conducting plate having a wedge shape.