摘要:
A reflection sensor (1) for detecting presence of a detection object is provided. The reflection sensor comprises a light emitting element (31), a light receiving element (32) cooperative with the light emitting element, a first resin body (21) enclosing the light emitting element and including a first surface and a second surface away from the first surface, a second resin body (22) enclosing the light receiving element and including a third surface and a fourth surface away from the third surface, and a third resin body (25) holding the first and the second resin bodies. The reflection sensor further comprises a first pair of leads (5a, 5b) electrically connected to the light emitting element via a wire (4a) for example, and a second pair of leads (5c, 5d) electrically connected to the light receiving element via another wire (4b) for example. The leads of the first pair and the second pair extend out of one side surface (2a) or another side surface (2b) of the third resin body. The leads of the first pair and the second pair have respective free end portions (51a, 51b, 51c, 51d) connected to connecting pads P on a substrate S via solder H. The first resin body and the second resin body have respective upper surfaces and bottom surfaces exposed to outside.
摘要:
An optical semiconductor device for surface mounting includes a semiconductor chip having a light emitting function or a light receiving function and two electrodes of the semiconductor chip sealed into a light-permeable resin package. The electrodes have tip surfaces externally exposed from the sides at the four corners of the resin package. The tip surfaces 4 of the electrodes are located on only the sides 4a of the resin package, but not located on the bottom thereof. In this configuration, when the optical semiconductor device for surface mounting is arranged on the solder paste on a board, its stand-up due to the contraction of the solder paste after the reflow can be avoided.
摘要:
Inside a blown-out air duct in the air conditioner through which conditioned air reaches a blowing-out port, there is provided a rectifying box having a air passage therein, for rectifying a flow of the conditioned air toward a predetermined flowing direction in order to prevent any dew condensation at the blowing-out port in the air conditioner. In the meantime, in order to suppress noise, rectifying plates for reducing an inflowing angle of air flowing into the fin tips of a heat exchanger are interposed between an axial fan and the heat exchanger for taking in the air from the axial fan for heat exchanging.
摘要:
A motor-driven focusing apparatus of a telescope, includes a telescopic optical system which includes a focusing lens group guided along an optical axis; a motor-driven lens moving device which drives the focusing lens group along the optical axis; a manual operating switch for actuating the motor-driven lens moving device; and a lens-control device for controlling the motor-driven lens moving device when the manual operating switch is turned ON, so that the moving amount per unit time of a focal point of the telescopic optical system, that is caused by a movement of the focusing lens group, is kept substantially at a constant speed regardless of the position of the focusing lens group on the optical axis, the constant speed being selected from one or more constant speeds.
摘要:
A plurality of processor elements (31 to 34) are disposed on a main board (710) in line in parallel with a first edge of the main substrate (710). Expansion board slots (331 to 336) into which an expansion board for mounting an I/O interface thereon is plugged and a memory connector (341) to which a memory board for mounting a memory thereon is connected are disposed in a region of the main substrate opposite to the first edge. The long sides of the expansion board slots (331 to 336) and the memory board connector (341) are in parallel with the first edge. A bridge LSI for executing protocol conversion between processor buses (210, 211, 212) and an I/O bus (230) and memory controllers (151, 152) for controlling memory access are disposed in regions adjacent to both the expansion board slots and the processor elements. The processor bus (210, 211, 212) is bent into a protuberance shape so that a branch does not substantially form and the bridge LSI and memory controller are substantially at the middle portion of a plurality of processors. The processor bus connects the processor elements, the bridge LSI and the memory controller in this order.
摘要:
An interchangeable camera system having a waterproof mount mechanism, and a photo-taking lens barrel and camera body used in the interchangeable-lens camera system. A large diameter part 2c which is provided on a lens-side mount surface 2a compresses a sealing member 6 in cooperation with a sealing surface 5c of a camera body 5 so that a gap between the lens-side mount surface 2a and the camera body 5 is sealed by the sealing member 6.
摘要:
An apparatus for driving a collapsible lens mount having several telescoping segments includes, for each movable segment, a transducer that expands and contracts responsive to a wave pulse and a drive shaft coupled to the transducer. By varying the wave pulse conditions, the expansion and contraction are made to occur at different rates. A coupling member on each segment frictionally engages the drive shaft and transmits movement of the drive shaft during relatively slow drive shaft movements to the lens segment. The apparatus may also include a lens hood driven by the transducer and drive shaft apparatus of the invention.
摘要:
A recording sheet of the type on which an ink containing a water-soluble polymer is applied by an ink jet system for recording, which comprises a substrate and a porous alumina hydrate layer containing a gelling agent for the water-soluble polymer, formed on the substrate.
摘要:
A data output portion transmits a pulse signal having a pulse width according to a value of transmit data on a predetermined cycle. An H pulse width counter and an L pulse width counter measure a length of a high level period and a length of a low level period in the received pulse signal by using a clock signal having the same frequency as that of the clock signal used in the data output portion. A comparing portion compares the sum of both the measured lengths of the periods with the predetermined cycle, and outputs an error signal in case of a mismatch. In a PWM communication system, it is also possible to detect a signal delay or an error of the clock signal, which is temporarily caused within one cycle.
摘要:
The electrophotgraphic photoreceptor is composed of an electrically conductive substrate having formed thereon a photosensitive layer containing a phthalocyanine mixed crystal comprising titanyl phthalocyanine and hydrogen phthalocyanine, wherein the phthalocyanine mixed crystal has peaks at 6.8.degree., 7.4.degree., 15.0.degree., 24.7.degree., 26.2.degree., and 27.2.degree. of the Bragg angle (2 .theta..+-.0.2.degree.) in the X-ray diffraction spectrum and having a ratio of the peak intensity at 27.2.degree. to the peak intensity at 6.8.degree. of 1 or more. The electrophotographic photoreceptor can output the output signals as digital signals even when the input light is a digital light or an analog light and thus the electrophotographic photoreceptor can be used for an electrophotograph of a digital recording system and even when the photorecetor is used as a conventional photoreceptor for PPC (analog light input), high-quality images having sharp edges can be obtained.