摘要:
An imaging lens includes at least one lens element having a surface that includes: a light transmitting region that transmits incident light; a second region; a step that extends in a direction generally parallel to a normal to said surface, that connects the light transmitting region to the second region, and that forms a boundary between the light transmitting region and the second region; and a light blocking coating that covers the entire second region. The entire surface of the second region, or only a portion thereof, may project or be recessed from the surface of the light transmitting region. The second region may extend completely or partially around the light transmitting region, and may function as an aperture stop, a field stop, or other stop. A method of manufacturing such a lens element is also disclosed.
摘要:
A method for reducing a sulfur-containing compound by hydrogenation using a noble metal catalyst which method is exemplified by an industrial method for producing a 2-alkyl-3-aminothiophene derivative with high economical efficiency by hydrogenating a 2-alkenyl-3-aminothiophene derivative using the noble metal catalyst. 2-Alkyl-3-aminothiophene derivatives are useful compounds in the fields of medicine and agriculture, and in particular, useful in bactericides for agriculture or gardening, or intermediates of the bactericides. The hydrogenation reaction temperature is controlled at 150° C. to 300° C. and the method allows the used noble metal catalyst to be recovered and reused.
摘要:
A single focus telescopic lens includes, in order from the object side: a diaphragm stop; and first and second lens components, each lens component being of positive refractive power and each having a convex surface on the object side near the optical axis. Each of the two lens components has two aspheric surfaces, may be a lens element, and preferably is made of plastic. The single focus telescopic lens may include no other lens elements and the diaphragm stop may be on the object side of the single focus telescopic lens. A specified on-axis condition is satisfied in order to reduce aberrations and to make the single focus telescopic lens compact. Additionally, satisfying a condition related to the maximum angle of incidence of among all the image forming principal rays helps achieve the desired telescopic properties with the desired optical performance.
摘要:
There is disclosed a method for manufacturing particle deposited body comprising supplying, under sucking condition, particles entrained by air on a continuous carrier sheet which is running at a prescribed direction to deposit the particles on the carrier sheet, thereby obtaining a particle deposited body comprising the particles and the carrier sheet, the carrier sheet having an air-permeability of 4.0 seconds/(300 ml·32 pcs.) or less.
摘要:
A bumper 10 is extendedly provided in a width direction of a vehicle in front of a radiator panel 40 having an upper frame 41 and a lower frame 42 both extendedly provided in the width direction of the vehicle at a front part of the vehicle body. The bumper 10 comprises an upper part bumper 20 which has an upper side impact absorbing material 22 provided between an upper side bumper beam 21, extendedly provided in the width direction of the vehicle above the lower frame 42, and a bumper face 23, and a lower part bumper 30 which has a lower side impact absorbing material 32 provided between the lower frame 42 of the radiator panel 40, extendedly provided below the upper part bumper 20, and a bumper face 23.
摘要:
Provided are an oxide superconducting wire which maintains a high critical current density and has a small current drift with small ac loss when the same carries an alternating current and a method of preparing the same, and a cable conductor which is formed by assembling such oxide superconducting wires. The oxide superconducting wire is a flat-molded stranded wire which is formed by twisting a plurality of metal-coated strands consisting of an oxide superconductor, and is characterized in that the flat-molded stranded wire has a rectangular sectional shape, and a section of each strand forming the flat-molded stranded wire has an aspect ratio (W1/T1) of at least 2. The method of preparing this oxide superconducting wire comprises the steps of preparing a stranded wire by twisting a plurality of strands, each of which is formed by metal-coating an oxide superconductor or raw material powder therefor, flat-molding the prepared stranded wire, and repeating rolling and a heat treatment of at least 800° C. on the flat molded stranded wire a plurality of times.
摘要:
A compact two-group zoom lens, wherein zooming is accomplished by changing the distance between the two lens groups. In order from the object side, the first lens group G1 is of positive refracting power and includes a negative meniscus lens element L.sub.1 with its concave surface on the object side, a positive meniscus lens element L.sub.2 made of plastic having two aspherical surfaces with its convex surface on the object side, and a biconvex lens element L.sub.3 having different surface curvatures, with its surface of stronger curvature on the image side. The second lens group G2 includes a positive meniscus lens element L.sub.4 that has two aspherical surfaces with its concave surface on the object side, and a negative meniscus lens element L.sub.5 with its concave surface on the object side. It is preferable that lens element L.sub.4 has an aspherical surface of positive refracting power and lens element L.sub.2 has an aspherical surface of negative refracting power. Also, it is preferable that lens elements L.sub.2 and L.sub.4 are formed with an acrylic-system resin. Furthermore, the following conditions are satisfied:1.4
摘要:
Through selecting machines from groups of equipment, determine a line composition for producing a specific product so that a tact time of the line may not exceed an initial set tact time. Give a priority order to the machines based on machines' features, thereby grouping the machines. Store information including the priority order within each group, the priority order between the groups, mounting tact time of the loadable parts, and the tact times proper to each machine into an external storage 1 as control information 2. Supplement the machines according to the priority order to the line composition from the equipment until all the parts are loaded, and calculate the tact time of the line with a CPU 3. Supplement the machines successively from the groups of equipment until the line tact time becomes not more than the initial set tact time. The line tact time is calculated with the CPU 3.
摘要:
According to one aspect, provided is a junction between tape-type superconductors, which are formed of metal-coated oxide superconductors. The superconductors of the superconducting wires, which are oppositely joined to each other, are overlapped with each other. According to another aspect, provided is a method of joining tape-type superconducting wires formed of metal-coated oxide superconductors, which comprises a step of preparing tape-type superconducting wires having portions to be joined, a step of separating metal coatings from first sides of the superconductors in the portions to be joined for exposing the superconductors, a step of overlapping the exposed superconductors with each other, and a step of joining the overlapped superconductors to each other. In the junction obtained according to these aspects, it is possible to stably carry a uniform superconducting current.