摘要:
There is provided a coupling lens used in an optical information recording/reproducing device for recording information to and/or reproducing information from an optical disc. The coupling lens includes a first surface and a second surface, wherein the coupling lens is configured to satisfy a following condition (1): −0.80≦Z≦0.40 (1), wherein a value Z is obtained from a following equation (E1): Z = ⅆ ⅆ n ( L ′ ) L ′ = ( A - B ) ( D - E ) - ( F - G ) ( H - I ) . ( E1 )
摘要:
An objective lens used for an optical information recording/reproducing apparatus for an optical disc based on a predetermined standard is made of resin and has a numerical aperture larger than or equal to 0.75. When f (unit: mm) represents a focal length at a wavelength λ (unit: nm), d (unit: mm) represents a thickness, and n represents a refractive index of the objective lens at the wavelength λ, the objective lens satisfies following conditions: 1.00
摘要:
A scanning lens for an imaging optical system converges a beam emitted by a light source and deflected by a deflector on a target surface to form a beam spot scanning in a main scanning direction thereon. The scanning lens includes a plastic lens formed by injection molding, which has a diffractive lens structure on at least one surface thereof. The diffractive lens structure has a plurality of annular zones arranged concentrically about a rotational axis. Each annular zone has a diffracting surface that diffracts the light beam passing therethrough. The diffractive lens structure has stepped surfaces each connecting adjoining diffracting surfaces. In a plane including the rotational axis and parallel with the main scanning direction, the stepped surfaces are inclined with respect to the rotational axis so that stress working between a metallic molding for the plastic lens and each of the stepped surfaces in demolding is reduced.
摘要:
A multichip module includes a package substrate, a first semiconductor device, a second semiconductor device and a conductive bump. The first semiconductor device is flip-chip bonded to the package substrate. The first semiconductor device includes a first chip pad on a surface thereof. The second semiconductor device is mounted on the first semiconductor device. The second semiconductor device includes a second chip pad facing the first chip pad. The conductive bump connects the first chip pad to the second chip pad. The conductive bump includes a first metallic body that has a first diffusion rate and a second metallic body that has a second diffusion rate lower than the first diffusion rate.
摘要:
An electronic apparatus manufacturing method comprises applying a first adhesive agent to a mounting portion, a first heating, in such a way that connection pads and bumps, come into contact, by pressing a heating head against a non-mounting surface of the electronic component, heating the electronic component, hardening the first adhesive agent, affixing the mounting substrate and electronic component, filling a space between the mounting substrate and the electronic component with a second adhesive agent under reduced pressure, and a second heating step of, from being under reduced pressure to being under atmospheric pressure, by pressing the heating head against the non-mounting surface of the electronic component, heating the electronic component, as well as hardening the second adhesive agent, melting the connection pads, and joining the connection pads and the bumps.
摘要:
An ultrasonic tool, for bonding two materials to each other by joining a face of one of the materials to a face of the other material using the action of ultrasonic waves applied to one of the materials through another face of the one of the materials, wherein the ultrasonic tool has a coating layer comprising chromium oxide as a main component formed on at least the surface of the tool that is in contact with the face of the one of the materials through which the ultrasonic waves are applied to the one of the materials. An ultrasonic bonder provided with the ultrasonic tool is also disclosed.
摘要:
A scanning optical system includes a deflector that deflects a light beam toward an object surface such that the light beam is scanned over the object surface in a main scanning direction. A mirror system reflects back the light beam so that the light beam travels toward the object surface after being deflected twice by the deflector. The mirror system reflects back the light beam such that a projection of the light beam on an auxiliary scanning section, which is a plane perpendicular to the main scanning direction, is incident on the reflection surface for a first time at an incident angle different from an incident angle at which the projection of the light beam is incident on the reflection surface for a second time. A blocking member is provided to prevent the unwanted light flux from striking the object surface while allowing the light beam scanning the object surface.
摘要:
An ultrasonic tool, for bonding two materials to each other by joining a face of one of the materials to a face of the other material using the action of ultrasonic waves applied to one of the materials through another face of the one of the materials, wherein the ultrasonic tool has a coating layer comprising chromium oxide as a main component formed on at least the surface of the tool that is in contact with the face of the one of the materials through which the ultrasonic waves are applied to the one of the materials. An ultrasonic bonder provided with the ultrasonic tool is also disclosed.
摘要:
A projection optical system, which is telecentric with respect to an object side and an image side, projects a pattern onto an image plane, which is substantially parallel with the pattern, at a substantial equi-magnification. The projecting optical system is provided with first and second condenser lenses having a common (first) optical axis which is perpendicular to the pattern and the image plane. The projection optical system further includes an imaging lens having a second optical axis that intersects with the first optical axis at an intermediate position between the first and second condenser lenses. A first mirror reflects a beam from the pattern and passed through the first condenser lens toward the imaging lens. A second mirror reflects the beam passed through the imaging lens to the imaging lens, and a third mirror reflects the beam passed through the imaging lens toward the second condenser lens.
摘要:
An objective lens for a plurality of types of optical discs is provided with a diffracting structure on at least one surface thereof. The surface includes an inner area including the optical axis and an outer area. The outer area includes at least one special annular zone. Part of a first beam (having a first wavelength for a first optical disc of lower data density) passed through the zone will be substantially in antiphase with part of the first beam passed through the inner area. The convergence angle θ of part of the first beam incident on the outermost part of the inner area measured after emerging from the objective lens and a design numerical aperture NAref of the first optical disc satisfy: 1.0