摘要:
A method of adjusting the mutual separation (g) of the two overlapping metallic cantilever members (9, 11) within the vitreous envelope of a reed switch, having a beam (21) of radiant energy to which the envelope is substantially transparent directed for a controlled period of time through the envelope onto a localised area (p) of at least one of the members (11), causing permanent thermally-induced bending of that member (11) about the irradiated area (p).
摘要:
A laser trimming apparatus calibration system including controlling a laser beam positioning mechanism to move a laser beam to a desired nominal laser position, imprinting a mark on a medium to establish an actual laser position, comparing the imprinted mark with the desired nominal position and producing a result indicative of the difference between the actual position and the desired nominal position. The system further including providing an illuminated mark at a desired illuminated mark nominal position, controlling the laser beam positioning mechanism to direct an optical path to the desired illuminated mark position, establishing an actual illuminated mark position by directing light from the desired illuminated mark nominal position along the optical path to the detection device and comparing the actual illuminated mark position with the nominal illuminated mark position.
摘要:
Disclosed is a method and apparatus for removing debris caused during laserrimming of films. A vacuum scoop is attached to a movable head which contains the laser optical components. The scoop removes the debris as it is generated and therefore keeps the trimming apparatus essentially clean.
摘要:
The present invention is a combination of a laser system and a controller for use in vaporizing the material of a metallized dielectric film capacitor to form a hole in order to trim its capacitance. The combination includes a laser system which has a laser modulator, a mechanical triggering device and a controller which includes a trigger/reset circuit which is electrically coupled to the mechanical triggering circuit and which provides a trigger signal in its triggered state and a reset signal in its untriggered state. The controller also includes a clock circuit which is electrically coupled to the trigger reset circuit and which provides clock signals in response to the trigger signal and a one-shot monostable, multivibrator circuit having an RC timing circuit which is electrically coupled to the clock circuit and to the laser modulator and which controls the pulse width of its output signal in response to the clock signals. The controller further includes a counter which is electrically coupled to the one-shot monostable, multivibrator circuit and which counts each of the clock signals and a comparator which is electrically coupled to the counter in order to compare the number of the counted clock signals to a selected number and which is electrically coupled to the clock circuit. When the number of the counted clock signal equals the selected number, the comparator provides a clock inhibit signal in order to inhibit the clock circuit from providing any more clock signals.
摘要:
The invention discloses a method for detecting a relative positional relation between the coordinate systems of a semiconductor device such as an IC memory and a laser system for cutting a desired wiring pattern. The detecting method according to this invention comprises the steps of scanning a cross-shaped diffusion layer formed on a silicon wafer with a laser beam in a square shape, detecting a change in a current generated when the laser beam crosses the diffusion layer, defining two points at which the current abruptly increases in the X- and Y-axes of the coordinate system of the wafer, respectively, and calculating a reference point (origin) of the coordinate system of the silicon wafer by calculating an intersection of virtual diagonals of a virtual square the four corners of which correspond to the four points in the X- and Y-axes.
摘要:
A laser is used to cut slots into a film deposited on a substrate so that a clean kerf is produced without harming the substrate. The laser cut vaporizes the film material as the removal mechanism and some of the vaporized material will redeposit over the surface of the film adjacent to the kerf. When the redeposited material is illuminated and viewed obliquely a series of light fringes can be observed. The laser focus is adjusted until the fringe pattern is symmetrical about the kerf. The laser power is adjusted until the fringes extend to about three times the kerf width on both sides of the kerf. This provides a precision nonsubjective means for adjusting laser focus and power.
摘要:
An electronic digital timepiece comprises a liquid crystal display on which is directly mounted the time base generator and logic circuitry in the form of an integrated circuit. The time base generator comprises a resistor-capacitor oscillator wherein the timing resistor and/or the timing capacitor are laser trimmed to adjust the output frequency of the time base generator.
摘要:
A laser processing apparatus includes a support portion, a laser processing head, a vertical movement mechanism, a horizontal movement mechanism, and a controller. The controller controls starting and stopping of emission of a laser light from the laser processing head based on rotation information in a state where a focusing point is positioned at a position along a circumferential edge of an effective region in a target, while rotating the support portion, to perform a circumferential edge process for forming a modified region along the circumferential edge of the effective region in the target.
摘要:
Disclosed is a method and apparatus for automated removal of a segment of a braided metal shield from an electric cable. A segment of a braided metal shield protruding from a holder is pulled back over a heat absorbing ring. The ring is inserted over the braided metal shield. Laser radiation of sufficient power is applied to the segment of the braided metal shield located over the ring to cut the braided metal shield located over the ring.
摘要:
Embodiments of the present disclosure can include a method for frequency trimming a microelectromechanical resonator, the resonator comprising a substrate and a plurality of loading elements layered on a surface of the substrate, the method comprising: selecting a first loading element of the plurality of loading elements, the first loading element being layered on a surface of a region of interest of the substrate; heating the first loading element and substrate within the region of interest to a predetermined temperature using an optical energy source, causing the first loading element to diffuse into the substrate; and cooling the region of interest to form a eutectic composition layer bonding the loading element and the substrate within the region of interest.