Abstract: A filter module includes a first optical fiber collimator, a second optical fiber collimator, and a filter located between the first and second optical fiber collimators. The first optical fiber collimator includes a first optical fiber, a first optical fiber chip for holding the first optical fiber, and a first lens. The second optical fiber collimator includes second optical fibers, a second optical fiber chip for holding the second optical fiber, and a second lens. The filter is located between and coaxial with the first and second lenses. The filter, the first lens, and the second lens form a center piece of the filter module.

Abstract: To provide a compact and low-cost glass antenna in which an antenna position can be easily recognized by emitting a light near the antenna position, and thus a passerby or the like can easily grasp the position when he or she holds up a tag. The glass antenna has plate-like glasses 11A and 11B, antennas 12A and 12B provided on the plate-like glasses 11A and 11B, and a light emitting unit 16a that is provided so as at least a part thereof to be overlapped with the antennas as seen from the direction that the antennas 12A and 12B are directed, and scatters the light guided by the plate-like glasses 11A and 11B to emit light in the vicinity of the antenna.

Abstract: A lens array 4 is formed as an erect 1:1 imaging lens by superimposing two lens plates 40 and 40 together. Each lens plate 40 consists of a number of micro lenses 41 which are regularly provided at a predetermined pitch and in a two-dimensional manner. This lens plate 40 is for example made by press molding the ultraviolet curing resin in a soft condition using a transparent mold and by irradiating the ultraviolet light on the ultraviolet curing resin from outside for hardening. Since the lens array 4 is provided with micro lenses 41 in rows in a sub-scanning direction, deterioration of an amount of light level resulting from the displacement between a light axis of the lens and an image sensor 6 is not generated.

Abstract: A member having high photocatalytic activity and multiple glass using the member are provided. A photocatalyst layer (TiO2) is formed on the surface of a substrate (glass sheet) through the intermediary of a crystalline undercoat layer (ZrO2), and no dead layer is substantially present between the photocatalyst layer and the undercoat layer. Also, provision of an amorphous layer between the substrate and the undercoat layer prevents peeling or defects between the photocatalyst layer and the substrate. In particular, by adjusting the thickness of each layer within a specific range, it is possible to obtain an article having a film configuration in which the optical feature of a reflection color, small variation of the reflectance, and a photocatalytic function are combined.

Abstract: In order to provide a method of manufacturing a glass panel which, in time of a baking process, restrains an internal stress generated in both of glass plates (1, 2) to prevent a decline in strength, and restrains inorganic and organic substances remaining within a void (V) defined between the glass plates (1, 2) to prevent deterioration in quality, a method of manufacturing a glass panel comprises the steps of executing a joining process for joining the pair of glass plates (1, 2) opposed to each other across the void (V) at peripheries thereof by using a low melting point glass (4) in a melted condition, executing a baking process for suctioning gas from said void (V) through a suction portion disposed in said glass plates while heating said void (V) defined between the glass plates (1, 2), and sealing said suction portion to seal said void (V), wherein the gas is suctioned from said void (V) with said low melting point glass (4) being in a softened condition in which a coefficient of viscosity thereof is 1

Abstract: A bonding method that enables adhesive protruding out from a joint to be removed easily. A primer 14 is applied onto a part of a region 13a of a joint 13 between a glass plate 11 and a molding 12. An adhesive 15 for which adhesion is realized through the primer 14 is applied such as to fill the joint 13 with the adhesive 15.

Abstract: A polarizing filter has a laminate structure: wherein one to four layers of first dielectric thin films 1 and one to four layers of second dielectric thin films 2 are alternately laminated on a transparent flat substrate 10 to form the laminate structure, the layers of second dielectric thin films 2 having a refractive index lower than that of the first dielectric thin films 1 with respect to the wavelength of incident light; wherein one layer of the third dielectric thin film 3 having a refractive index intermediate between the refractive indices of the first and second dielectric thin films with respect to the wavelength of incident light is laminated on a surface of the laminate structure. In an optical device using the polarizing filter, the angle of incidence is set to be in a range of from 20 to 70 degrees.

Abstract: A glass substrate is irradiated with a converged laser beam to thereby form a spherical or nearly spherical convex portion on a surface of the glass substrate. More preferably, there may be used a method including the steps of: sticking a glass substrate to a flat member having a predetermined spherical or aspherical concave portion formed therein; and irradiating a converged laser beam onto a surface of the glass substrate just under the concave portion while making the converged laser beam penetrate through the flat member to thereby form a spherical or aspherical convex portion in the inside of the concave portion in accordance with the shape of the concave portion.

Abstract: Disclosed is an image forming apparatus which provides an image of an excellent quality which has a less variation in resolution and suppressed linear irregularity. A rod lens array includes two rows of rod lenses stacked one on the other. An LED array is offset by a predetermined offset amount from a plane passing the median position between the first row of rod lenses and the second row of rod lenses. This structure can realize an LED printer head which reduces a variation in the resolution of the rod lens array, thereby suppressing linear irregularity, and can thus provide an image having an excellent quality.

Abstract: A glass panel (P) comprising a pair of glass plates (1A, 1B) opposed to each other, spacers (2) disposed between the pair of glass plates for maintaining a gap therebetween, and a sealing member (3) having a lower melting point than the glass plates (1) for sealing the pair of glass plates (1A, 1B) at outer peripheries (9) thereof to form a decompression void (V) between the pair of glass plates (1A, 1B), wherein a compressive force Fc is allowed to remain at outer surfaces of the outer peripheries (9) of the glass plates (1), with the decompression void (V) being in atmospheric pressure condition.

Abstract: An optical module includes a package, which accommodates an optical system. A package main body has an opening. A lid is attached to the main body to close the opening of the main body. The lid seals the package. An anti-deterioration agent for preventing deterioration of the optical system is located inside the package at a position out of a light path of the optical system. The anti-deterioration agent includes at least one of desiccant and deoxidant.

Abstract: A glass article has an indication on its surface. The indication has gloss and high luminance and is capable of providing a variety of color tones. The indication is made of a composition containing a glossy pigment comprising glass flakes coated with metal oxide having a refractive index higher than that of glass and/or a glossy pigment comprising glass flakes coated with metal. The indication is formed by applying a paint containing a glossy pigment comprising glass flakes coated with metal oxide having a refractive index higher than that of glass and/or a glossy pigment comprising glass flakes coated with metal and, after that, heating the paint if necessary. A matte inorganic pigment layer may be provided to cover the indication.

Abstract: A wavelength division multiplexing optical coupler comprising an input optical fiber for a plurality of wavelengths; a lens for converting the light from the input optical fiber into a parallel light; a first optical filter group comprising optical filters aligned along the flux of parallel light so as to be fixed by angles different from each other such that fluxes of light in predetermined wavelength ranges are reflected in respective directions; and output optical fibers, to which the fluxes of light are coupled; wherein a second optical filter group for transmitting the predetermined wavelength ranges are arranged between the first face of the lens and the respective end faces of the set of the output optical fibers for coupling the fluxes of light reflected by the respective optical filters of the first optical filter group.

Abstract: A liquid crystal screen, which can be easily manufactured so that an increase in cost can be prevented, and enables incidence angle dependence of image quality to be eliminated. The liquid crystal screen 10 is comprised of a liquid crystal layer 14 that is comprised of a transparent polymer film 11 made of a latex having a plurality of voids therein and liquid crystal capsules 13 formed through the voids being filled with nematic liquid crystalline rod-like molecules 12, and a pair of PET films 15a and 15b that sandwich the liquid crystal layer 14 therebetween. A converted diameter D1 of the liquid crystal capsules 13 is set to not less than 1.5 ?m, and the birefringence ?n of the nematic liquid crystalline rod-like molecules 12 is set to not less than 0.12.

Abstract: A light guide 11 of a rectangular cross-section has side faces 11a, 11b including short sides in the longitudinal direction of which one side face 11a is provided with a light-scattering pattern 20, formed by screen-printing in white paint, for scattering the light incident to the light guide 11. The other side face 11b facing the side face 11a is exposed from a casing 12 to serve as a light-emitting surface. In the present embodiment, it is possible to secure a sufficient amount of light because the whole area of the side face is used as the light-emitting surface. The remaining side faces 11c, 11d of the light guide 11 are side faces including the long sides. Since the side faces 11c, 11d easily produce a surface sink during molding, neither the light-scattering pattern 20 nor the light-emitting surface is provided thereon.

Abstract: A method for producing a glass substrate for information recording media applications, the method including: providing the glass substrate having a peripheral surface and a recording surface; polishing the peripheral surface of the glass substrate; lapping polishing the recording surface; precision polishing the recording surface; supporting the glass substrate in a holder; and performing a chemical strengthening treatment for forming a compressive stress layer on the glass substrate by immersing the glass substrate into a molten solution of a prescribed salt, wherein said molten solution is contained within a tank, and wherein at least one of the holder and the tank includes a nickel alloy that contains nickel as a major constituent.

Abstract: A glass panel comprising a pair of glass sheets (1, 2) disposed with respective faces thereof confronting each other in face-to-face relationship with a gap (V) therebetween and with peripheral edges of the glass sheets (1, 2) being bonded with a bonding sealant (4) to be sealed thereby; an evacuating port (5) for evacuating gas present within said gap (V) to the outside; and a getter (7) for coming into contact with the gas within said gap (V), wherein said evacuating port (5) includes a getter-retaining space (6) for retaining said getter (7) therein, said port (5) being formed in one (1) of said pair of glass sheets (1, 2), said getter (7) being retained within said getter-retaining space (6), said evacuating port (5) being closed and sealed by means of a lid (8).

Abstract: A glass panel (P) comprising a pair of glass plates (1A, 1B) opposed to each other, spacers (2) disposed between the pair of glass plates for maintaining a gap therebetween, and a sealing member (3) having a lower melting point than the glass plates (1) for sealing the pair of glass plates (1A, 1B) at outer peripheries (9) thereof to form a decompression void (V) between the pair of glass plates (1A, 1B), wherein a compressive force Fc is allowed to remain at outer surfaces of the outer peripheries (9) of the glass plates (1), with the decompression void (V) being in atmospheric pressure condition.

Abstract: A thin-film structure includes plate-shaped metals or plate-shaped structures in which a plate-shaped metal and a plate-shaped dielectric are in contact. The plate-shaped metal or structures are formed on a transparent base having a surface with line-shaped corrugated structures. The plate-shaped metals or structures are perpendicular to or oblique to the surface of the base. The thin-film structure has characteristics suitable for polarizers used in liquid crystal projectors and the like.

Abstract: A substrate for use as a disk substrate in a hard disk drive or the like, an information recording medium such as a magnetic disk, and a starting material glass plate which is a starting material of the substrate for information recording media. The forming conditions of the starting material glass plate are controlled such that the starting material glass plate has a long-wavelength waviness of not more than 6 nm. This starting material glass plate is polished so as to have a long-wavelength waviness of not more than 6 nm using CeO2 abrasive grains having a mean grain diameter of not less than 0.01 ?m and a 90% diameter of the volume grain size distribution of not less than 0.02 ?m. The resulting substrate for an information recording medium has an excellent planarity, can be obtained in a short time and with a low polishing amount, and the resulting information recording medium is able to cope with increased data zone recording density.