摘要:
A spiral separation membrane element includes a water collection tube; a separation membrane wound around the water collection tube, having a feed-side surface and a permeate-side surface, and including a band-shaped region on at least one end of the feed-side surface in an axial direction of the water collection tube; and a channel material fused to the band-shaped region.
摘要:
A display apparatus includes a display unit; a barrier unit including a plurality of transmissive sections; and a filter having a transmittance distribution in which transmittance of light passing through a central portion of the transmissive section of the barrier unit is lower than transmittance of light passing through a circumferential portion of the transmissive section of the barrier unit.
摘要:
An optical device for stereoscopic display includes: a display section having a first surface and a second surface opposed to each other and outputting displayed-image light from the second surface; a parallax separation section disposed to face the second surface of the display section, and splitting the displayed-image light from the display section to allow stereoscopy; a first transparent parallel plate disposed to be in contact with the first surface of the display section; and a second transparent parallel plate disposed to be in contact with the second surface of the display section.
摘要:
An optical pickup for recording or reproducing an information signal in an optical disc includes a light source for emitting a light beam toward the optical disc, an objective lens for focusing the light beam emitted from the light source onto a recording surface of the optical disc, and a photodetector for receiving the light beam reflected by the recording surface of the optical disc and outputting a signal corresponding to an intensity of the received light beam. A spot of the light beam received by the photodetector is asymmetric in both a radial direction and a tangential direction of the optical disc. A lens shift signal for the objective lens is detected by a controller on the basis of the signal output from the photodetector, the controller controlling the objective lens to follow the optical disc.
摘要:
A conversion lens which includes a pair of transparent members is provided. At least one of the transparent members is formed of a deformable film; a connecting member for connecting the pair of transparent members so as to form a sealed space sandwiched between the pair of transparent members; a liquid filled in the sealed space; and a curvature changing mechanism for changing the curvature of the deformable film by moving the liquid filled in the sealed space. A conversion lens system and an imaging device, provided with the conversion lens are also provided.
摘要:
An optical pickup for recording/reproducing information on/from an optical disc having recording layers, includes a light source; an objective lens for condensing an optical beam emitted from the light source on the recording layer; a photo-detector having a light-receiving section for receiving return light from the optical disc; an optical-path separating unit for separating the optical path of the return light reflected by the optical disc from the optical path of the optical beam emitted from the light source; and a masking member having a masking unit shielding part of a passing-through optical beam, in which the masking unit shields the central region of the optical beam to be incident in the light-receiving section among the optical beams reflected by the other recording layers or surfaces different from the recording layer recording/reproducing information so as not to admit the central region to the light-receiving section.
摘要:
An optical pickup includes: a light source emitting a light beam; an objective lens condensing the light beam emitted from the light source on a recording layer of an optical disc; a photodetector including a photoreception portion receiving the returned light from the optical disc; an optical-path separating unit separating the optical path of the returned light reflected at the optical disc from the optical path of the light beam emitted from the light source; an astigmatism generating unit generating astigmatism regarding a light beam to pass through, forming an image in a first direction at a first position in the optical axis direction, and also forming an image in a second direction generally orthogonal to the first direction at a second position in the optical axis direction; and a polarization-direction adjusting unit adjusting the polarization direction of a light beam to pass through for each region.
摘要:
An optical pickup includes a laser light source configured to emit laser light, an objective lens configured to focus the laser light emitted from the laser light onto an optical disk, and an image-formation magnification rate varying section for varying an image-formation magnification rate at which the laser light is focused on the optical disk.
摘要:
The present invention relates to novel compounds which contain no sulfur or chlorine, and which thus contribute to the cleaning of the environment as organo-metal complexes used in metal pastes, etc., and a method for manufacturing the same.Metal acetylide compounds expressed by the general formula M(--C.tbd.C--R).sub.n (in the formula, M indicates a metal atom, n indicates the valence number of the metal atom M, and R indicates a hydrocarbon group with 1 to 8 carbon atoms which may or may not contain an oxygen atom) are provided as novel organo-metal complexes. Since these compounds contain no sulfur or chlorine, there is no release of sulfurous acid gas or chlorine compounds when the compounds are used in metal pastes, etc., even if the pastes are fired. Accordingly, these compounds contribute to the cleaning of the environment.In the present invention, solid sulfites are used as metal reducing agents; accordingly, simple stoichiometric control of the reaction is possible, so that metal acetylide compounds can easily be obtained. Furthermore, since no sulfurous acid gas is generated in this manufacturing method, there are no concerns about environmental pollution, and the method contributes to the cleaning of the environment.
摘要:
A navigation-monitoring apparatus comprises a fixed ground station sending forth an interrogation signal to a ship and a transponder carried on the ship and transmitting a reply signal to the fixed ground station in response to the interrogation signal. A microwave sensor carried on the ship measures the distance between the ship and the nearest bank. Data on the measured distance is added to a reply signal sent forth from the ship to the fixed ground station. The fixed ground station measures an interval between a point of time at which the interrogation signal was issued and a point of time at which a reply signal from the ship was received, thereby defining the position of the ship from said time interval and data on the ship-to-bank distance.