摘要:
A method of manufacturing an optical head includes joining of a first substrate on which a plurality of lenses are formed in an array, a second substrate on which a plurality of prisms and mirrors are formed in an array, and a third substrate on which a plurality of detectors and light sources are formed in an array, after positioning of the individual substrates, and cutting the joined substrates along the rows and columns of the array.
摘要:
A deflector array in which a plurality of deflectors, which deflect charged particle beams, are arrayed on a substrate. The plurality of deflectors include respective openings different from each other formed on the substrate. Each of the plurality of deflectors includes a pair of electrodes opposing each other through a corresponding opening, and the plurality of deflectors are arrayed such that a length of the pair of electrodes in a longitudinal direction thereof is not less than a distance between centers of two of the plurality of deflectors which are located nearest to each other.
摘要:
In an optical head, if a lens is reduced in size so that it can be integrated with a light source and a photodetector, other optical components as well as the lens must be reduced in size, which would result in greater difficulties in handling for assembly and adjustment purposes. The invention allows large quantities of ultra-small optical heads to be produced accurately and at low cost, the optical heads being easy to adjust and not requiring the handling of minute components for adjustment purposes. A first substrate includes lenses for focusing light on an information storage medium, a second substrate includes detectors and disposed on the surface thereof, and a layer, which is disposed between the first and second substrates, includes prisms and mirrors. The layer also includes cavities in which light sources are disposed. The individual substrates are formed in the form of wafers with the lenses, mirrors, prisms, light sources, and photodetectors disposed thereon.
摘要:
In an optical head, if a lens is reduced in size so that it can be integrated with a light source and a photodetector, other optical components as well as the lens must be reduced in size, which would result in greater difficulties in handling for assembly and adjustment purposes. The invention allows large quantities of ultra-small optical heads to be produced accurately and at low cost, the optical heads being easy to adjust and not requiring the handling of minute components for adjustment purposes. A first substrate includes lenses for focusing light on an information storage medium, a second substrate includes detectors and disposed on the surface thereof, and a layer, which is disposed between the first and second substrates, includes prisms and mirrors. The layer also includes cavities in which light sources are disposed. The individual substrates are formed in the form of wafers with the lenses, mirrors, prisms, light sources, and photodetectors disposed thereon.
摘要:
Since each wiring line is formed on one surface of the associated beam at a prescribed width over the entire length of the beam, the beam has the same sectional shape taken in the width direction at any point along an arbitrary longitudinal direction of the beam. As a result, the second moment of area, which is determined by the shapes of the beam and the wiring line, is uniform. This prevents a problem of the curvature of a beam varying locally when the beam is bent by a prescribed amount due to contact of the probe with a pad of a subject body. This, in turn, prevents local concentration of stress in the beams and thereby prevents breakage of the beam. Therefore, the probe structure can be miniaturized while the strength of the beams is kept at a required level, whereby a semiconductor device testing apparatus capable of accommodating many probes can be realized.
摘要:
A water quality meter is composed of a plurality of analyzing units for analyzing water samples introduced from a water distribution pipe, each analyzing unit including a reagent mixing cell and a measuring cell, and a liquid introducing unit integrated with the analyzing units, which is composed of a single member in which a plurality of fluid flow paths for feeding various types of liquid including the water sample into the analyzing unit are formed. Furthermore, the cells and the plurality of three-dimensional fluid flow paths formed in the single member are fabricated by a micro-fabrication technique using photo-curing resin.
摘要:
In an overall stacked piezoelectric element, the material for the electrode was selected from aluminum, nickel and copper each alone or alloys based on aluminum, nickel or copper, and further the parts of the electrode which contact with molding resin on the side face of the stacked body and the parts which have to be insulated from the lead-out terminals were subjected to an oxidation or nitriding treatment. As the result, an improved element was obtained which is of a high reliability, suited to low voltage operation and suffers no short-circuit of the electrode even when water permeates to the side face of the stacked body during operation in humid atmosphere.
摘要:
There are provided a process for fabricating MEMS device that includes a plurality of through-holes capable being arranged at a high density, the through-holes having a tapered end portion. Through-holes having vertical side surfaces and tapered bottoms are provided by a processing method including the steps of: disposing quadrilateral patterning having desired dimensions on a silicon substrate having a flat surface of a crystal plane, etching the substrate to a desired depth by dry etching that can realize a high aspect ratio etching, and anisotropic wet etching the dry etched substrate with a KOH aqueous solution containing isopropyl alcohol mixed thereinto.
摘要:
A deflector array includes a plurality of deflectors, which deflect charged particle beams, arrayed on a substrate. Each of the plurality of deflectors includes a single opening formed in the substrate, and each of the plurality of deflectors includes a pair of electrodes that oppose each other through the opening and are configured to deflect a single charged particle beam. The plurality of deflectors are arrayed such that a length of the pair of electrodes in a longitudinal direction thereof is not less than a distance between centers of two of the plurality of deflectors that are located nearest to each other. The plurality of deflectors is arrayed to form a checkerboard lattice, and two openings of the two of the plurality of deflectors overlap in the longitudinal direction.
摘要:
A vehicle headlight having a light source to emit light and a reflector for illuminating forward the light emitted from the light source, wherein the reflector is comprising a plurality of movable mirrors to be operated independently and optionally and a fixed mirror disposed outside these movable mirrors, whereby the light emitted from the light source to the movable mirrors are not blocked mutually so that a distribution of light illuminated from the vehicle headlight is minutely and quickly controlled.