摘要:
A light source device for a laser beam printer in which a semiconductor laser is driven with a pulse current having a minimum pulse width at the ON time on the order of milliseconds or less is provided, wherein the semiconductor laser is formed so that either the rate of change at the rise portion of the pulse current becomes ±8% or less or the semiconductor laser is excited in a multiple mode in the vicinity of the threshold value of the oscillation, and the semiconductor laser oscillates in a single mode at a current separated from the threshold value, by adjusting of at least one of the width w of a stripe groove (7a) of the current block layer, the composition of clad layers (5), the distance d between the current block layer (7) and the active layer (4), the composition of the current block layer (7) and the formation of a light absorption layer into the current block layer (7). As a consequence, in the case where the light source device for the laser beam printer is driven with a short drive pulse on the order of several hundred micro seconds, the light source device becomes such that a transient phenomenon is not generated at the time of the rise of the pulse and a stable light output can be obtained.
摘要:
An optical communication module comprises a light emitting element for generating the transmission signal, a condenser lens for connecting the transmission signal light from the light emitting element to the light transmission line, a light receiving element for receiving the receiving signal light from the light transmission line, and a package that covers the light emitting element and the light receiving element, and uses the condenser lens as an opening window, wherein the wavelength selective film for allowing the required waveband light to transmit and the unwanted waveband light to reflect is coated on the transparent member installed on or in the vicinity of the convex surface of the condenser lens. As a result, a bi-directional optical communication module of an inexpensive construction can be obtained, which can receive the desired waveband light only without using a special component such as a wave separator and does not return the unwanted waveband light to the light transmission line.
摘要:
A fryer is provided which, during a standby for cooking, can keep the temperature of a cooking oil slightly lower than a cooking temperature and, during cooking, can quickly raise the oil temperature to the cooking temperature. The fryer also has capabilities of easily performing a heat exchange operation on the cooking oil, preventing degradation of the cooking oil, securing a good kitchen environment and enhancing a work efficiency. The fryer comprises a fryer tank having oil and water for cleaning the oil stored in two layers one upon the other; and a heater installed in the oil layer; wherein the water in the water layer is drawn out from a water suction opening at a bottom of fryer tank, cleaned by a filtering water tank and then delivered into the fryer tank almost horizontally in an off-centered direction from a water supply opening formed in a lower, side wall of the fryer tank, thus rotating the water in the fryer tank in a swirl. The fryer also has a device for discharging impurities collected in the filtering water tank.
摘要:
It is intended to provide an anti-HIV drug characterized by containing multimeric actinohivin, a polypeptide which is multimeric actinohivin; a gene encoding the same; and a method of producing the anti-HIV drug. The anti-HIV drug inhibits the synctium formation and has an enhanced effect
摘要:
An optical transmitter is equipped with a laser diode and a light detector provided on a packaging base, in which the light detector has a semiconductor substrate side arranged on a packaging base side, a semiconductor junction plane, a side surface which is roughly orthogonal to the semiconductor junction plane, and a facing surface which faces the side surface, wherein the facing surface is partially or completely inclined to reflect the output light from the laser diode incident from the side surface to the semiconductor junction plane of the light detector.
摘要:
The switching element has a switching layer between a first electrode layer and a second electrode layer. The switching layer includes a charge transfer complex containing an electron donor and an electron acceptor. An insulating layer is provided between the first electrode layer and the switching layer, and contacts the switching layer. The switching layer switches from a high-resistance state to a low-resistance state upon application of a voltage greater than a first threshold value in a first bias direction. Thereafter, the switching layer maintains the low-resistance state when the applied voltage decreases beyond the first threshold value. When the applied voltage becomes not smaller than a second threshold value in a second bias direction or a reverse direction to the first bias direction, the switching layer switches from the low-resistance state to the high-resistance state. Thereafter, the switching layer maintains the high-resistance state when the applied voltage decreases beyond the second threshold value.
摘要:
A novel compound, which is effective for treatment of AIDS and has inhibitory activity on human immunodeficiency viruses (HIV), was examined. The K97-0003 peptide, which has anti-HIV activity caused by inhibition of syncytium formation by fusion of envelope glycoprotein of HIV and the host cells expressing the receptor to said virus, was provided by the present invention. Furthermore, the base sequence of the gene coding for said polypeptide, and the method for preparing said polypeptide using strain K97-0003 were provided.
摘要:
A micro-display (1) and a condenser lens (2) focusing an image of the micro-display onto retina of human eye are provided within a case (3). Then, a reflected light detecting means (4) for detecting brightness of reflected light reflected by human retina, which comprises a block where a light emitting section (41) and a light receiving section (42) are provided alternately is provided. A location adjusting means for moving, for example, the condenser lens held with coil (51) so that amount detected by this reflected light detecting means, for example, is maximized and adjusting the relation so that the location relationship between the micro-display and the condenser lens is optimized. As a result, a head mounted display can be obtained which is capable of observing without occurring any fatigue of eyes in the case where one has to recognize both of the outside world and the display approximately at the same time.
摘要:
In a method of manufacturing an organic EL device, an ITO transparent electrode 11, organic layer 12 and upper electrode 13 are formed in a vacuum on a glass substrate 2. They are sealed in a nitrogen atmosphere by a sealant. Since they can be formed in an environment not exposed to the outside air, it is possible to prevent impurities from being applied to the ITO transparent electrode 11, thereby a highly reliable organic EL device.
摘要:
In accordance with one aspect of this invention, in a mechanism for attaching a rotating plate in a helmet, a positioning member which is of substantially tubular shape and relatively slidable along a guide groove provided in the rotating plate such as a shield plate and shaped into a nearly circular arc has an easily bendable portion provided between a first cut and a second cut which are formed in substantially opposed relation to each other at the upper end and the lower end of the positioning member, respectively. In accordance with another aspect of this invention, in a mechanism for attaching a rotating plate in a helmet, the three engaged openings provided in the guide groove so as to keep in the fully closed condition, in the fully opened condition, and in the defrosted condition, respectively, can relatively hold the positioning member to almost remain its original form, and the arcuated groove disposed in the guide groove can relatively hold the positioning member so as to deform it elastically.