Abstract: An objective optical system includes a diffractive optical element on the light source side of an objective lens for focusing incident light of three different wavelengths with two different numerical apertures onto three different optical recording media. The diffractive optical element is formed of two lens elements made of different materials that are cemented together at a diffractive surface. Three conditions are satisfied so as to achieve optimum imaging. The diffractive surface may be shaped so that the order of the diffracted light of the shortest wavelength ?2 having the largest diffracted intensity is different from the order of the diffracted light of the second wavelength ?2 having the largest diffracted intensity, and the order of the diffracted light of the first wavelength ?1 having the largest diffracted intensity is also different from the order of the diffracted light of the third wavelength ?3 having the largest diffracted intensity.

Abstract: An objective optical system is formed of a diffractive optical element with a diffractive surface formed on a virtual plane and an objective lens for focusing three collimated light beams of three different wavelengths at three different numerical apertures onto desired positions of three different recording media with substrates that include different thicknesses, such as an AOD, a DVD, and a CD, that introduce different amounts of spherical aberration in the focused beams. The objective optical system provides compensating spherical aberration to the three light beams by varying the distance between the diffractive optical element and the objective lens with the recording medium being used. The objective optical system focuses second-order diffracted light of one wavelength and first-order diffracted light of the other two wavelengths. An optical pickup device includes the objective optical system, the recording media, and a light source that provides the three light beams.

Abstract: An objective lens is formed as an objective lens element with a diffractive surface on one side. The objective lens focuses a collimated light beam of a first wavelength diffracted by the objective lens onto a first recording medium, a collimated light beam of a second wavelength diffracted by the objective lens onto a second recording medium, and a diverging light beam of a third wavelength diffracted by the objective lens onto a third recording medium. The three light beams are focused at three different working distances from the objective lens and the diffraction orders of the diffracted light of two of the light beams is the same. The objective lens satisfies certain conditions related to the shortest of the three different working distances, the focal length of the objective lens element at the shortest of the three wavelengths, and the thickness of the objective lens.

Abstract: An objective optical system is formed of a diffractive optical element with a diffractive surface formed on a virtual plane and an objective lens for focusing three light beams of three different wavelengths at three different numerical apertures onto desired positions of three different recording media with substrates that include different thicknesses, such as an AOD, a DVD, and a CD, that introduce different amounts of spherical aberration in the focused beams. The objective optical system provides compensating spherical aberrations to the three light beams, two of which are incident on the objective optical system as collimated beams and one of which is incident as a diverging beam. The objective optical system focuses second-order diffracted light of one wavelength and first-order diffracted light of the other two wavelengths. An optical pickup device includes the objective optical system, the recording media, and a light source that provides the three light beams.

Abstract: An objective lens consists of two lens elements of different materials that are cemented. The lens surfaces that are cemented includes a phase function so that the cemented surface forms a optical diffractive surface that enables the objective lens to focus incident light of three different wavelengths with different numerical apertures onto different optical recording media. Three conditions are satisfied so as to achieve optimum imaging. The optical diffractive surface may be shaped so that the order of the diffracted light of the shortest wavelength ?1 having the largest diffracted intensity is different from the order of the diffracted light of the second wavelength ?2 having the largest diffracted intensity, and the order of the diffracted light of the first wavelength ?1 having the largest diffracted intensity is also different from the order of the diffracted light of the third wavelength ?3 having the largest diffracted intensity.

Abstract: Provided is a retrofocus imaging lens in which various aberrations are satisfactorily corrected, having a sufficient space from a mechanism viewpoint so that a focus group does not interfere with a lens shutter mechanism even at the time of focusing according to a rear-focus system. A retrofocus imaging lens has, in order from an object side, a first lens group and a second lens group. The first lens group is constructed of, in order from the object side, a front-side first lens group having a negative refractive power as a whole and a rear-side first lens group having a positive refractive power as a whole. The first lens group is basically constructed to have a positive refractive power as a whole. The second lens group includes one or more positive lens and one or more negative lens and has a positive refractive power as a whole. Each of the front-side first lens group and the rear-side first lens group includes, basically, one or more positive lens and two negative lenses.

Abstract: A color image readout lens having four lens groups of positive, positive or negative, negative, and positive refractive power, respectively, in order from the object side. The first lens group is formed of a first lens element having a convex surface on the object side. The second lens group has a convex surface of the object side and is formed of a biconvex lens element that is cemented to a biconcave lens element. The third lens group is formed of a fourth lens element that is cemented to a fifth lens element, with the fifth lens element having positive refractive power and a convex surface on the image side. A fourth lens group is formed of a sixth lens element having a convex surface on the image side. Various conditions are satisfied in order to favorably correct the various aberrations.

Abstract: Information transmitted through radio is recorded in telephone communications using radio.

Abstract: A liquid ejecting head is provided comprising a member provided with a plurality of ejecting outlets; a substrate having a plurality of bubble generating means; a plurality of liquid flow paths; a common liquid supply chamber; and a plurality of movable members disposed in the longitudinal direction of the liquid supply inlet. According to this novel liquid ejecting head having the structure described above, improvements of both ejecting power and ejecting frequency can be achieved, and a conventional problem in which liquid flow paths are adversely affected to each other can also be solved. A method for ejecting liquid using the liquid ejecting head described above and a manufacturing method therefor are also disclosed.

Abstract: Provided is a retrofocus imaging lens in which various aberrations are satisfactorily corrected, having a sufficient space from a mechanism viewpoint so that a focus group does not interfere with a lens shutter mechanism even at the time of focusing according to a rear-focus system. A retrofocus imaging lens has, in order from an object side, a first lens group and a second lens group. The first lens group is constructed of, in order from the object side, a front-side first lens group having a negative refractive power as a whole and a rear-side first lens group having a positive refractive power as a whole. The first lens group is basically constructed to have a positive refractive power as a whole. The second lens group includes one or more positive lens and one or more negative lens and has a positive refractive power as a whole. Each of the front-side first lens group and the rear-side first lens group includes, basically, one or more positive lens and two negative lenses.

Abstract: A method for manufacturing an ink discharge port of an ink jet recording head, which is provided with the ink discharge port for discharging an ink liquid droplet for adhesion thereof to a recording medium, a liquid chamber for retaining ink to be supplied to the discharge port, an ink flow path communicated with the discharge port and the liquid chamber, an energy generating element provided for a part of the ink flow path, and an ink supply port for supplying ink from outside to the liquid chamber, comprises the step of processing and forming the wall face inside the ink discharge surface of the ink discharge port in a surface condition having irregularity of 0.3 micrometer or more and 1 micrometer or less as the standard deviation value for the surface roughness thereof.

Abstract: A color image readout lens having four lens groups of positive, positive or negative, negative, and positive refractive power, respectively, in order from the object side. The first lens group is formed of a first lens element having a convex surface on the object side. The second lens group has a convex surface of the object side and is formed of a biconvex lens element that is cemented to a biconcave lens element. The third lens group is formed of a fourth lens element that is cemented to a fifth lens element, with the fifth lens element having positive refractive power and a convex surface on the image side. A fourth lens group is formed of a sixth lens element having a convex surface on the image side. Various conditions are satisfied in order to favorably correct the various aberrations.

Abstract: A liquid ejecting head is provided comprising a member provided with a plurality of ejecting outlets which eject liquid; a substrate having a plurality of bubble generating means which generates thermal energy for generating and growing a bubble which ejects the liquid, the bubble generating means opposing the associated liquid ejecting outlet; a plurality of liquid flow paths each of which communicates with the associated ejecting outlet and has a bubble generating region for generating the bubble in the liquid by the thermal energy; a common liquid supply chamber which communicates with the plurality of said liquid flow paths via a liquid supply inlet and which supplies liquid to the plurality of said liquid flow paths via the liquid supply inlet, the liquid supply inlet being a long through-hole formed in the substrate; and a plurality of movable members disposed in the longitudinal direction of the liquid supply inlet so as to cover the liquid supply inlet, each of the movable members having a free end in

Abstract: The invention provides a liquid discharge head that includes a heat generating member for generating thermal energy for generating a bubble in liquid, a discharge port constituting a part for discharging the liquid, a liquid flow path communicating with the discharge port and having a bubble generating area for generating the bubble in the liquid, a movable member provided in the bubble generating area and adapted to displace with the growth of the bubble, and a limiting portion for limiting the displacement of the movable member within a desired range, the liquid discharge head being adapted to discharge the liquid from the discharge port by the energy at the generation of the bubble by the heat generating member.

Abstract: An image capture lens and an image capture apparatus in which various kinds of aberrations are corrected and optical performance suitable for capturing images is obtained. Successively from an object side provided are a first lens group including a negative meniscus lens, a second lens group including a positive lens directing its convex to the object side, a third lend group including a first cemented lens composed of a bi-convex positive lens and a bi-concave negative lens, the first cemented lens having positive refractive power and directing its concave to the object side, a fourth lens group including a second cemented lens composed of a bi-concave negative lens and a bi-convex positive lens, the second cemented lens having negative refractive power and directing its convex surface to an image side, a fifth lens group including a positive lens directing its convex to the image side and a sixth lens group including a negative lens directing its concave to the object side.

Abstract: Compounds including 1-(biphenyl-4-yl)methyl-1H-1,2,4-triazoles and 1-(biphenyl-4-yl)methyl-4H-1,2,4-triazoles each having a (2,4-dioxopyrrolidine-5-ylidene) methyl or (2,4-dioxo-tetrahydrofuran-5-ylidene)methyl group as the substituent at the 2′-position and salts thereof are lowly toxic and highly safe and are useful as an angiotensin II antagonist. Thus, these compounds can be used in medicines, which contain these compounds as an active ingredient.

Abstract: Novel stereoisomeric indole compounds of the formula (1), a process for the preparation the same, and use thereof wherein, Y represents the group wherein, X represents alkyl group having 1-5 carbon atom(s) (the alkyl group may be substituted with hydroxyl group, carboxyl group, amino group, methylthio group, mercapto group, guanidyl group, imidazolyl group or benzyl group), and R1 and R2 represent each independently hydrogen atom, alkyl group, aralkyl group, cycloalkyl group or aryl group;R represents hydrogen atom, alkyl group, aralkyl group, cycloalkyl group, aryl group, monovalent metal, amine or ammonium; and the symbol ‘*’ represents a position of an asymmetric carbon atom.

Abstract: A color image readout lens usable within a magnification range from −0.6X to −1.7X comprises, successively from the object side, a first lens group G1 comprising by a lens having a positive refracting power with a convex surface directed onto the object side, a second lens group G2, comprising by a cemented lens, composed of a biconvex lens and a biconcave lens, having a negative refracting power as a whole with a convex surface directed onto the object side, a third lens group G3, comprising a cemented lens, composed of a biconcave lens and a biconvex lens, having a negative refracting power as a whole with a convex surface directed onto an image side, a fourth lens group G4 comprising a positive lens with a convex surface directed onto the image side, and a fifth lens group G5 comprising a negative meniscus lens with a stronger concave surface directed onto the object side. The color image readout lens further satisfies predetermined conditional expressions.

Abstract: An image capture lens and an image capture apparatus in which various kinds of aberrations are corrected and optical performance suitable for capturing images is obtained. Successively from an object side provided are a first lens group including a negative meniscus lens, a second lens group including a positive lens directing its convex to the object side, a third lend group including a first cemented lens composed of a bi-convex positive lens and a bi-concave negative lens, the first cemented lens having positive refractive power and directing its concave to the object side, a fourth lens group including a second cemented lens composed of a bi-concave negative lens and a bi-convex positive lens, the second cemented lens having negative refractive power and directing its convex surface to an image side, a fifth lens group including a positive lens directing its convex to the image side and a sixth lens group including a negative lens directing its concave to the object side.

Abstract: An anti-inflammatory analgesic patch containing loxoprofen, crotamiton, solvent, skin permeation accelerator, water-soluble polymers and moisturizers. The patch allows for the loxoprofen to penetrate the skin.