摘要:
In a fuel injection pump, fuel pressurized by a feed pump is supplied to an accommodation chamber via a communication path having an orifice. An end of the communication chamber on a side of the accommodation chamber is positioned to face an axial end of a minute space between sliding contact portions of a cam and a bush when the cam is at a given angular position. The fuel fed from the feed pump is injected from the end of the communication path axially deep into the minute space between the sliding contact portions so that oil film for lubrication is formed on the sliding contact portions, resulting in suppressing frictional seizure of the sliding contact portions.
摘要:
An optical displacement measurement device in which variations in interference light by stray light are suppressed to improve interpolation accuracy and detection accuracy. The surface of diffraction grating 11 is coated with protective layer 12 of thickness L and refractive index n. The protective layer has thickness L such that, with angle θ between a line normal to the protective layer and an incident light beam and an angle θ′ between diffracted light generated by diffraction grating and reflected by boundary surface of protective layer to become stray light to be re-incident on diffraction grating and a line normal to diffraction grating, interference light is of an intensity of interference such that an optical path difference between stray light and light interfering with stray light represented by Δ=2L(n/cos θ′+tan θ′·sin θ) will amount to not higher than 2% of intensity of interference of interference light with optical path length difference Δ=0.
摘要:
In the selection of pigment for use, the optical characteristics of pigment taking into account an environment under multiple light sources obtained when irradiating each object with visible light from two or more light sources but not obtained in the use of a single light source can be utilized in compositions, or moldings, containing pigments, such as titanium dioxide, suitable for cosmetic, etc.
摘要:
A regulation valve has: a cylinder that has an inlet port at one end side thereof to introduce the fuel thereinto, and a relief port opening on a side face thereof; a piston that is reciprocatably inserted in the cylinder to vary an opening area of the relief port in accordance with a variation of the pressure of the fuel flowing in through the inlet port; and a spring that urges the piston in a direction against the pressure of the fuel acting on the piston to regulate the pressure to be a specific value. Further, the cylinder and/or the piston is formed so that the piston opens the relief port at a relatively small speed per a unit displacement thereof in starting opening the relief port and subsequently at a relatively large speed.
摘要:
A drive unit for a charge coupled device, which includes a plurality of transfer electrodes arranged to intersect a transfer direction of information charge, and stores and transfers information electric charge using potential wells formed in a semiconductor substrate by voltages applied to the transfer electrodes. As at least one of the transfer electrodes is used as a selected transfer electrode, the drive unit causes the at least one transfer electrode to undergo a cycle of switching from an ON state to an OFF state a number of times continuously to transfer the information electric charge.
摘要:
The present invention provides a surface-treating agent to form fine roughness on the surface of a material and more specifically a surface treating-agent which forms fine roughness on the surface of a material and is easy to process, thereby being useful for materials for highly water-repellent glass, lenses and fabric, materials with an excellent anti-soiling property, panels having an excellent light scattering property, illumination of optical fiber and the like, materials and coatings to prevent accumulation and adhesion of snow or icicle formation on antennas, wires and steel towers, and roughness formation on the surface of semiconductor substrates; the treated materials; and a method of surface treatment to develop the roughness. The surface-treating agent of the present invention has an average primary particle diameter in the range of 1-50 nm, contains fine particles in the range of 5-60% by mass of the total amount of the surface-treating agent in a slurry of nanoparticles which are treated for water repellency and mechanically dispersed in a solvent containing a volatile solvent, and forms a roughness structure with upward protrusions having a spatial periodicity of 0.1-50 μm on the surface of a material by volatilizing the solvent or dipping repeatedly in water upon treating the surface of the material.
摘要:
A regulation valve has: a cylinder that has an inlet port at one end side thereof to introduce the fuel thereinto, and a relief port opening on a side face thereof; a piston that is reciprocatably inserted in the cylinder to vary an opening area of the relief port in accordance with a variation of the pressure of the fuel flowing in through the inlet port; and a spring that urges the piston in a direction against the pressure of the fuel acting on the piston to regulate the pressure to be a specific value. Further, the cylinder and/or the piston is formed so that the piston opens the relief port at a relatively small speed per a unit displacement thereof in starting opening the relief port and subsequently at a relatively large speed.
摘要:
A position detection device in which 2nd-order or higher order diffracted light as well as stray light is suppressed from being generated to improve the S/N ratio of a position detection signal as well as to improve detection accuracy. With a pitch d of a diffraction grating 11, whose grating surface 11a is covered with a protective layer 12 of a refractive index n, and with a wavelength λ0 in vacuum of coherent light illuminated, d
摘要:
A displacement detecting device includes an irradiation optical system, an interference optical system, a light-receiving section, and a displacement detecting section. The irradiation optical system causes two light-beams to be incident on a diffraction grating respectively at different angles with respect to a plane perpendicular to the X-direction along which grating structures of the diffraction grating are periodically arranged. The interference optical system causes two Mth-order diffracted lights of respective light-beams incident on the diffraction grating to interfere with each other, so as to generate an interference light. The light-receiving section receives the interference light and detects an interference signal. The displacement detecting section detects a vertical displacement of a surface having the diffraction grating arranged thereon based on the change of the interference signal.
摘要:
An optical displacement measuring device includes a diffraction grating, a reflecting optical system configured to irradiate two one-time diffracted beams diffracted at the diffraction grating on the diffraction grating again, and the reflecting optical system includes a first imaging element, a second imaging element, a first reflector, and a second reflector, wherein the focal length of the first imaging element and the focal length of the second imaging element are the same, the diffraction grating and first reflector are disposed around the focal position of the first imaging element, and the diffraction grating and second reflector are disposed around the focal position of the second imaging element, thereby suppressing influence of displacement of the diffraction grating as to other than a direction where a movement position is detected.