Abstract:
If only blue and red color-filter layers are provided, the percentage of rejects during the manufacture of a color display device comprising a black-matrix layer and color-filter layers can be reduced substantially, without the picture quality being adversely affected.
Abstract:
The invention relates to a device (10) comprising a holder (1) and a module (2) which is secured in said holder and which preferably includes a laser. The module (2) is provided, at an end face, with connection pins (4) for the laser and, at the other end face, it is preferably coupled to a glass fiber (3). The holder (1) is further provided with connection means (6) which extend at right angles to the longitudinal direction of the module (2) and which are electrically connected to the connection pins (4) of the module (2). Such a device (10) is eminently suited to be mounted on a printed circuit board (30), in which case the glass fiber (3) extends parallel to said printed circuit board. In practice, this often constitutes an important advantage. A device (10) according to the invention is characterized in that the connection pins (4) are bent from the longitudinal direction of the module (2) towards the connection means (6), the free ends (7) of the connection pins (4) are inserted into the connection means (6), the holder (1) is provided with a clamping member (5) by means of which the module (2) is secured in the holder (1) and said clamping member (5) is constructed in such a manner that the module (2) can be placed in the clamping member (5) of the holder (1) in a direction at right angles to the longitudinal direction of the module (2).
Abstract:
A method of treating a surface (19') of a body (19), whereby light beam pulses from a Q-switched laser (1) are fired sequentially at the surface (19') according to a surfacial pattern, the Q-switch (11) being driven in such a manner that not all the light pulses have the same duration Ep. In a particular embodiment, the light beam pulses cause localized discoloration of the surface (19'), and Ep is altered so as to achieve different shades of surface discoloration for different pulses. In another embodiment, the light beam pulses cause localized coloring of the surface (19'), and Ep is altered so as to achieve different surface colors for different pulses. In yet another embodiment, the light beam (15') is scanned over the surface (19') along a linear path (25), the surfacial velocity Vb of the beam (15') having a variable magnitude IVbI, and Ep is continually adjusted in such a manner that: a decrease in IVbI is countered by a decrease in Ep; an increase in IVbI is countered by an increase in Ep; Ep is otherwise left unaltered, so as to achieve an essentially constant laser fluence over the scanned portion (25) of the surface (19').
Abstract:
The invention relates to a signal lamp comprising a box-shaped housing having an open end, a number of LEDs being provided in the housing and the open end of the housing being closed by means of a spreading window. The invention is characterized in that the LEDs are clustered around the central axis of the housing and in that the lamp comprises a positive lens (preferably a fresnel lens). The signal lamp in accordance with the invention provides an optimum, homogeneous brightness distribution on the surface of the spreading window. Preferably, the lens has a focal distance f, the LEDs are arranged at a distance v from the lens, and 0.55
Abstract:
A charge measurement circuit (20) includes a charge sensitive amplifier (40) which holds the input (42) at a constant voltage. A compensation circuit (72, 74, 76, 80) enables a current to be supplied to or drained from a charge supplying circuit (32). This current is selected such that any voltage mismatch between the output of the supplying circuit (32) and the input (42) of the measurement circuit (20) does not result in a charge flow which causes errors in the measured signal.
Abstract:
A method for on-line handwriting recognition is based on a hidden-Markov model and implies the following steps: sensing real-time at least an instantaneous write position of the handwriting, deriving from the handwriting a time-conforming string of segments each associated to a handwriting feature vector, matching the time-conforming string to various example strings from a data base pertaining to the handwriting, and selecting from the example strings a best-matching recognition string through hidden-Markov processing, or rejecting the handwriting as unrecognized. In particular, the feature vectors are based on local observations derived from a single segment, as well as on compacted observations derived from time-sequential segments.
Abstract:
The method for inspecting an integrated circuit comprising a plurality of sub-circuits includes the determination of the supply current into at least one of the sub-circuits. This supply current is determined, while the other sub-circuits are operational, by measuring the voltage over a segment of the supply line through which this supply current flows. This supply line contains no additional components to facilitate the measuring of the voltage.
Abstract:
The luminaire for a tubular electric lamp (3) has, in a housing (1) with a light emission window (2) in plane P, reflectors (5) at either side of the lamp (3) and a number of slats (10) transverse to the reflectors (5) below the lamp (3). The slats (10) are V-shaped in cross section and have an inner surface (11) facing the lamp (3). The inner surface (11) has a central zone (12) and flanks (13) which extend at an angle away from plane P. The inner surface (11) has end zones (14) near the reflectors (5) which are in a plane Q parallel to plane P. The longitudinal axis (4) of the lamp (3) is situated in a region extending from plane Q towards plane P. Although the slats are relatively small, bright spots within the shielding angle of the luminaire are avoided.