Abstract: A watch cover glass having high hardness and excellent abrasion, and also having flaw resistance and antireflection function even after being used for a long period of time. The watch cover glass comprises a transparent substrate and, provided on at least one surface of the substrate, an antireflection film having a lamination structure that a SiON film (SiO2 and Si3N4 mixed film) and a Si3N4 film are laminated and the outermost layer is the SiON film. Accordingly, the proper antireflection effect can be obtained, the hardness of the antireflection film is increased and the abrasion resistance is remarkably increased. As a result, even after being used for a long period of time, the surface of the antireflection film is not finely flawed and is not peeled off, and it hardly occurs that the hands or dial plate are invisible due to surface mist and the antireflection function can be maintained.

Abstract: [Subject] To provide a decorative part having a hardening layer containing Au on the surface, particularly a gold colored decorative part having gloss and color tone inherent in gold, high brightness and high quality. [Means for Problem the Subject] The decorative part of the present invention comprises a substrate and, superimposed on the substrate, a hardening layer wherein the hardening layer comprises a primary layer comprising a nitride, a carbide or a carbonitride of one or two or more metals selected from Ti, Zr and Hf, a finishing layer comprising Au or an Au alloy having an arbitrary composition such as an Au—Ni alloy, an Au—Cu—Pd alloy etc. and, disposed between the primary layer and the finishing layer, a reflecting layer comprising a metal having a higher reflectance than one constituting the finishing layer, such as Ru, Pd, Rh, Ag, Os, Ir pr Pt. Thus, the gold colored decorative part having gloss and color tone inherent in gold, high brightness and high quality can be efficiently prepared.

Abstract: The present invention provides a watch cover glass having high hardness and excellent abrasion, and also having flaw resistance and antireflection function even after being used for a long period of time. [Means for Solving] The watch cover glass of the present invention comprises a transparent substrate and, provided on at least one surface of the substrate, an antireflection film having a lamination structure that a SiO2 and Si3N4 mixed film (hereinafter, referred to as SiON film) and a Si3N4 film are laminated and the outermost layer is the SiON film. According to the lamination structure, the proper antireflection effect can be obtained, the hardness of the antireflection film is increased and the abrasion resistance is remarkably increased.

Abstract: A screening layer is disposed on the front side of a solar battery to diffuse reflected light from the solar battery so as to reduce the quantity of light traveling outward from the front side of the solar battery. The screening layer prevents the reflected light from traveling outward so that the solar battery disposed on the back side thereof is concealed from view. An optical member is disposed on the front side of the screening layer to transmit light of wavelengths in a predetermined wavelength range included in the light incident the front surface thereof at a predetermined transmittance, and a diffusing layer is disposed on the front side of the optical member to diffuse reflected light from the optical member in nondirectional, soft light rays.

Abstract: A diffuse transmission layer (15) is provided on the front side of a solar battery (13), and the light entering the front side of the solar battery is diffused. A part of the light is reflected toward the front side, and another part is directed to the solar battery (13). The diffuse transmission layer (15) contains a fluorescent substance (14). The fluorescent substance (14) absorbs a predetermined wavelength band of the light incident to the front side of the solar battery and emits fluorescent light. The light generated by the fluorescent substance (14) is diffused within the diffuse transmission layer (15). A part of the light is emitted to the front side, and another part falls onto the solar battery (13). Owing to this arrangement, a bright external appearance of the device can be obtained, hiding the solar battery (13). A sufficient amount of light energy can be supplied to the solar battery (13).

Abstract: A planar display device having a fast display reaction time and which can have a large screen size but which is thin and light in weight. A face plate is provided which contains fluorescent materials sensitive to three different wavelengths of invisible ultraviolet rays and which emit light in red, green and blue colors in response to stimulation by rays of the three wavelengths. The three fluorescent materials may be stacked together in layers or mixed in a single layer with a binder, and a wavelength-converting layer may be employed.

Abstract: A fluorescent screen includes a substrate made of a light-scattering material and a mixture of an organic fluorescent substance and a binder dispersed therein. Since the luminescent light is scattered by the light-scattering material, the light emitted from the screen is increased to a level higher than that of a conventional fluorescent screen to enhance brightness thereof.

Abstract: An information recording medium comprising a pair of disk substrates at least one of which has an optical recording layer on one surface thereof, wherein the substrates are bonded to each other by using a silicone type adhesive, directly or by the medium of a spacer, so that the recording layer may be disposed inside of the substrates. Platinum is incorporated in the above-mentioned silicone type adhesive by using a platinum type crosslinking catalyst, without using the conventional benzoyl peroxide type crosslinking catalyst. Accordingly, there is provided the information recording medium excellent in mechanical strength, reliability and durability.

Abstract: A laser projection type display unit. A light modulator is provided between a laser light source and a galvanometer scanner. By cutting off the laser beam or modulating the amplitude of the laser beam by means of the light modulator, independent point groups can be displayed.

Abstract: A projection-type display apparatus has a light modulator for emitting a zero-order diffracted beam and a first-order diffracted beam which are added by a prism into a projecting light beam which is introduced into a light beam scanning system, which two-dimensionally scans a screen. The maximum intensity of the projecting light beam is increased to increase the brightness of the overall screen.

Abstract: An acousto-optical modulation device comprises a plurality of acousto-optic modulators arranged in series with each other, to receive a zero-order light from a previous stage of the modulators. A zero-order light emerging from the last stage is used as a modulated light of an incident light. The coefficient of extinction for the zero-order light is raised by this structure, and the acousto-optic modulation device presents a high diffraction efficiency and a high value of the coefficient of extinction at the same time.

Abstract: An optical characteristic adjusting apparatus for a laser beam radiation system comprises a transparent substrate which generates visible radiation in response to non-visible radiation, and a stand for positioning the substrate perpendicular to an optical axis of laser beam emitted from a laser beam radiation system. When the non-visible radiation irradiates the surface of the substrate, a bright spot is formed since the visible radiation is generated from the irradiated portion of the substrate. Therefore, an operator can appropriately adjust the optical characteristics of the non-visible radiation at both sides of the transparent substrate since the bright spot can be observed at both sides of the transparent substrate.

Abstract: A luminescent screen includes a plurality of columnar luminescent elements made of a transparent material which contains a substance capable of emitting luminescent light in response to stimulating light applied thereto, the columnar luminescent elements having central axes parallel to each other and having adjacent sides held against each other. Emitted luminescent light is prevented from leaking in a direction normal to the longitudinal direction of the columnar luminescent elements, thereby increasing the brightness of the entire luminescent screen. Since the columnar luminescent elements of the luminescent screen are not integrally joined as a continuous unitary structure, any leaking luminescent light from the adjacent luminescent elements or regions is reduced.

Abstract: A luminescent screen includes a screen plate containing a substance capable of emitting luminescent light in response to stimulating light applied thereto, and a regular array of convexes on one surface of the screen plate for trapping emitted luminescent light that is directed into the screen plate and for directing the trapped luminescent light toward a display surface of the screen plate. The brightness of the display surface is therefore increased.

Abstract: An apparatus has a light modulator for emitting a first-order diffracted beam to scan a screen two-dimensionally and a zero-order diffracted beam which is two-dimensionally deflected and projected onto the screen. The zero-order diffracted beam is effectively utilized, and the projection-type display apparatus is capable of displaying a new image pattern in which a moving image and a character drawn with a single stroke are displayed in an overlapping manner.

Abstract: A fluorescent screen comprises a plate woven or knitted from one or more threads each including an organic fluorescent substance. Since the luminescent light is scattered by the threads constructing the plate, the light emitted from the screen is increased to a level higher than that of the conventional fluorescent screen to enhance brightness thereof.

Abstract: A luminescent screen includes a screen plate containing a substance capable of emitting luminescent light in response to stimulating light applied thereto, and a reflecting layer on one surface of the screen plate for directing emitted luminescent light from a reverse surface of the screen plate toward a display surface thereof. The brightness of the display surface is therefore increased.

Abstract: A lenticular luminescent screen includes a lenticular base plate made of a transparent material which contains a substance capable of emitting luminescent light in response to stimulating light applied thereto. The lenticular base plate having at least one surface composed of a plurality of adjacent partly cylindrical lens elements. Since the cylindrical lens elements can catch stimulating light with a higher efficiency, the luminescent screen can emit an increased intensity of luminescent light. Inasmuch as the luminescent screen is reduced in thickness between the adjacent cylindrical lens elements, emitted luminescent light is prevented from leaking in a direction across the axes of the cylindrical lens elements.

Abstract: A color display apparatus for displaying a color video format signal comprising a two-dimensional screen on which light-beam sensitive three-primary-color luminous bodies are arrayed regularly in a predetermined direction, a generator for generating horizontal and vertical synchronizing signals from the video format signal, a light-beam deflector for scanning the two-dimensional screen with a signal light beam in synchronism with the horizontal and vertical synchronizing signals, and a modulator for modulating the intensity of the light beam in accordance with the color video format signal in synchronism with the scanning of the light beam in the predetermined direction.

Abstract: A luminescent screen includes a screen plate containing a substance capable of emitting luminescent light in response to stimulating light applied thereto. The screen plate is made of a resin containing a planar assembly of hollow column-shaped members having sides thereof fixed together, the column-shaped members defining respective elements. Since light emission interference does not occur between the elements, the brightness of the screen is increased. The hollow column-shaped members in the screen plate make the screen mechanically strong.