Abstract: A design data management program directs a computer to perform a procedure of converting design data generated at a designing side to a data format applicable to a production side and transmitting the data to the production side, and a procedure of converting the data to data described in a predetermined language and storing the data in the storage device when a notification of a change of the design data is received from the production side.

Abstract: The present invention provides a durable hologram sheet whose thickness can easily be reduced and a method for manufacturing the hologram sheet, a hologram label, and a hologram card and a method for manufacturing the hologram card. A hologram sheet includes a sheet 1 and a translucent DLC film 2 formed on the sheet 1. The DLC film 2 includes a local region having a higher refractive index (high-refractive-index regions 2a) and a local region having a lower refractive index (low-refractive-index regions 2b). Furthermore, a print layer may be formed on at least part of a main face of the sheet 1 facing the DLC film or on at least part of a main face of the hologram sheet.

Abstract: The present invention provides a DLC film that functions as an optical element and that can easily be miniaturized or integrated, and a method for forming the DLC film. A DLC film that has a refractive index varying continuously in at least one width direction from the center O of the DLC film. More specifically, a DLC film in which the refractive index decreases continuously in at least one width direction from the center O of the DLC film, and thereby the DLC film functions as a convex lens. A DLC film in which the refractive index increases continuously in at least one width direction from the center of the DLC film, and thereby the DLC film functions as a concave lens. A DLC film that has a refractive index varying continuously in the thickness direction.

Abstract: A optical diffraction element of a refractive-index-modulated type includes a transparent DLC film formed on a transparent substrate, wherein the DLC film is subjected to refractive-index modulation so as to include a plurality of relatively-high-refractive-index regions and a plurality of relatively-low-refractive-index regions for causing diffraction of light, and the refractive-index modulation causes diffraction effect so as to convert an intensity distribution in a cross section of a light beam applied to the DLC film into a uniform intensity distribution on a prescribed illumination surface.

Abstract: A polarization integrator comprises a polarizing beam splitter (PBS) for splitting light from a light source 1 into P-polarized light and S-polarized light, a first micro-lens 52, a ½ wavelength plate 53, and a second micro-lens 54; the first micro-lens is arranged to focus onto mutually differing positions the P-polarized light and S-polarized light split by the PBS; the ½ wavelength plate is arranged in the position in which the P-polarized light is focused, and operates to convert the P-polarized light into S-polarized light; the second micro-lens operates to integrate the S-polarized light after it has passed through the ½-wave plate and been polarization-converted, with S-polarized light which has not passed through the ½-wave plate; and at least any one of the PBS, the first micro-lens, the ½-wave plate, or the second micro-lens is formed using a DLC film.

Abstract: An apparatus and a program detect an error state of FSM coverage measurement, and shorten the checking time. The program for use in the FSM coverage measurement based on the language-described logical circuit and test bench is used to direct a computer to perform: a function of extracting an FSM configuration from the language description and the design information generated based on the language description; an extracting function of expanding the hierarchical levels of modules in the range of performing trace back from a variable as input of the FSM to output of a flip-flop or external input of a top module, and extracting FSM input logic between the hierarchical levels in response to the input of a module; and a detecting function of detecting whether or not there is a state that is never reached or a transition that never occurs by an arithmetic result based on the logic having exclusivity detected in the FSM input logic and FSM transition logic.

Abstract: A diamond-like carbon (DLC) film having refractive indices distributed in a pattern oriented within the plane of the film or on a bias with respect to the thickness of the film. Such films may be useful in low-cast Faraday rotators, in polarizers (analyzers), and in magnetic substances, and in Faraday rotators and optical isolators that can handle a plurality of wavelengths. The refractive index structure may be imparted to the DLC film, for example, by irradiating at least one region of the film with either a particle or energy beam.

Abstract: A diamond-like carbon (DLC) film having refractive indices distributed in a pattern oriented within the plane of the film or on a bias with respect to the thickness of the film. Such films may be useful in low-cost Faraday rotators, in polarizers (analyzers), and in magnetic substances, and in Faraday rotators and optical isolators that can handle a plurality of wavelengths. The refractive index structure may be imparted to the DLC film, for example, by irradiating at least one region of the film with either a particle or energy beam.

Abstract: The present invention provides a simple and low-cost flat microlens that can be used in various optical fields in a mechanically and thermally stable manner. A microlens is formed using a transparent DLC film (41). The DLC film (41) includes regions (Rmn) with graded indices of refraction. When a light beam passes through a region with graded indices of refraction, the light is focused.

Abstract: Affords efficiently and at low cost optical fibers capped at the end with a working, tiny optically diffractive film. An optical fiber includes a diffractive film formed onto an endface thereof, or onto the endface of a collimator joined to the endface of the fiber; the diffractive film includes a transparent DLC (diamond-like carbon) layer; and the DLC layer includes a modulated-refractive-index diffraction grating containing local regions of relatively high refractive index and local regions of relatively low refractive index.

Abstract: A design data management program directs a computer to perform a procedure of converting design data generated at a designing side to a data format applicable to a production side and transmitting the data to the production side, and a procedure of converting the data to data described in a predetermined language and storing the data in the storage device when a notification of a change of the design data is received from the production side.

Abstract: A design data management program directs a computer to perform a procedure of converting design data generated at a designing side to a data format applicable to a production side and transmitting the data to the production side, and a procedure of converting the data to data described in a predetermined language and storing the data in the storage device when a notification of a change of the design data is received from the production side.

Abstract: In an actuator drive control device for an active vibration isolation support system, accumulated time of eight time intervals tn of crank pulses which are outputted at every 15 degrees of a crank angle in a vibration period corresponding to 120 degrees of the crank angle, and average accumulated time shown by a straight line connecting a start point and an end point of the line of the accumulated time are calculated. Eight deviations ?tn are calculated by subtracting the average accumulated time from the accumulated time. A variation waveform of the deviations ?tn corresponds to a variation waveform of the time interval tn of the crank pulses attributable only to the engine vibration with the influence of a variation in the engine rotational speed Ne being eliminated.

Abstract: An apparatus for evaluating coverage includes a determining unit that checks description rules when a receiving unit receives hardware description data. If the hardware description data matches a first or a second description rule, an optimizing unit performs a logic optimization by rewriting of the hardware description data according to the description rule matching. A computing unit computes total number of paths in the hardware description data for which the logic optimization is performed. An executing unit executes a logic simulation using the hardware description data for which the logic optimization is performed. A measuring unit measures path coverage.

Abstract: Practical diffractive optical elements are made available efficiently and at low-cost. A refractive-index-modulated diffractive optical element includes a transparent DLC (diamond-like carbon) film (2) formed on a transparent substrate (1), with the DLC film (2) containing a diffraction grating having local regions (2a) of a relatively high refractive index and local regions (2) of a relatively low refractive index. The DLC film (2) can readily be deposited by plasma CVD onto the substrate (1), and the high refractive-index regions (2a) within the DLC film can readily be formed by irradiating it with an energy beam (4) such as an ion beam.

Abstract: The channel add/drop filter includes first and second 2D photonic crystals, and the first 2D photonic crystal includes a first waveguide and a first cavity, with the first cavity acting to take in light of a specific wavelength from the first waveguide and radiate it outside the first photonic crystal, and the second 2D photonic crystal includes a second waveguide with substantially the same characteristics as the first waveguide and a second cavity with substantially the same characteristics as the first cavity. The first and second waveguides are optically connected so that when the principal plane of the first 2D photonic crystal and the electric-field vector of the light within the first waveguide torn, an arbitrary angle ?, the principal plane of the second 2D photonic crystal and the electric-field vector of the light within the second waveguide form an angle of ?+(?/2).

Abstract: In an actuator drive control device for an active vibration isolation support system, accumulated time of eight time intervals tn of crank pulses which are outputted at every 15 degrees of a crank angle in a vibration period corresponding to 120 degrees of the crank angle, and average accumulated time shown by a straight line connecting a start point and an end point of the line of the accumulated time are calculated. Eight deviations ?tn are calculated by subtracting the average accumulated time from the accumulated time. A variation waveform of the deviations ?tn corresponds to a variation waveform of the time interval tn of the crank pulses attributable only to the engine vibration with the influence of a variation in the engine rotational speed Ne being eliminated.

Abstract: Affords efficiently and at low cost optical fibers capped at the end with a working, tiny optically diffractive film. An optical fiber (F) includes a diffractive film (DF) formed onto an endface thereof, or onto the endface of a collimator (C) joined to the endface of the fiber; the diffractive film includes a transparent DLC (diamond-like carbon) layer; and the DLC layer includes a modulated-refractive-index diffraction grating containing local regions of relatively high refractive index and local regions of relatively low refractive index.

Abstract: Affords efficiently and at low cost practical, tiny light-emitting devices having an optically diffractive film on their light-output face. A light-emitting device (LD) includes a diffractive film (DF) formed on its light-output face; the diffractive film includes a transparent DLC (diamond-like carbon) layer; and the DLC layer includes a modulated-refractive-index diffraction grating containing local regions of relatively high refractive index and local regions of relatively low refractive index.

Abstract: New material useful in miniature, low-cost Faraday rotators, polarizers (analyzers) and magnetic substances; in Faraday rotators and optical isolators that can handle a plurality of wavelengths; and in miniaturizing, and reducing the cost and enhancing the performance of, optical isolators and various optical devices. Optical isolator (60b) as one example is configured by rectilinearly arranging a wavelength-selective Faraday rotator (30), a polarizer (20) and an analyzers (40) formed from a DLC thin film, and a magnetic substance (50) that is transparent to light. Integrally forming these using thin-film lamination technology simplifies the fabrication procedure to enable manufacturing miniature, low-cost optical isolators.