Abstract: A compact imaging lens suitable for a high pixel density image pickup device which properly corrects chromatic aberration and other types of aberrations and ensures high image quality, low f-number, and low cost. A first lens, second lens, third lens, fourth lens, and fifth lens are arranged in order from the object side and both sides of all the lenses are aspheric surfaces and a diffractive optical surface with a chromatic aberration correction function is formed on one of the surfaces from the object side surface of the first lens to the object side surface of the second lens and on one of the surfaces from the object side surface of the third lens to the object side surface of the fifth lens. All the lenses are made of a plastic material.

Abstract: To provide a high image-quality, low cost, and small sized imaging lens suitable for an imaging lens which is compact and which has high density pixels, and with aberrations corrected satisfactorily. An imaging lens is configured from a first lens, a second lens, a third lens, and a fourth lens arranged in the named order from an object side, wherein both surfaces of each lens are formed from aspheric surface, and a diffraction optics surface exerting chromatic aberration correction function is arranged on any one surface from a surface of the first lens on an object side to a surface of the third lens on the object side, and each lens is configured from plastic material.

Abstract: A concave surface is formed on an object side of a plastic lens of a one-piece construction, and a convex surface is formed on an image-point side thereof. The concave and convex surfaces are aspherical. A diffractive optical surface that exerts a chromatic dispersion ability is formed on the convex surface, and conditional expressions (1) 0.45<L/R<0.95 and (2) ?0.065<L?(1?n)/R?<0.035n are met, where assuming that a position at which a chief ray and an optical axis intersect is regarded as an apparent stop, L denotes a distance to the apparent stop seen from the apex of the convex surface, L? denotes a distance to the apparent stop seen from the apex of the concave surface, R denotes a curvature radius of the convex surface, R? denotes a curvature radius of the concave surface, and n denotes a refractive index of a lens material.

Abstract: An imaging lens with large aperture ratio, high-performance and low-cost is provided, which is applied to an imaging element of a small-size and high resolution, in which aberration is corrected satisfactorily and sufficient diffraction resolution is achieved. An imaging lens includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged in sequence from an object side, wherein both surfaces of each lens are formed from aspheric surface, a diffraction optics surface exerting chromatic dispersion function is arranged on a surface on an image side of the second lens, each lens is configured from plastic material, and an aperture ratio is equal to or smaller than F/2.4.

Abstract: A compact imaging lens suitable for a high pixel density image pickup device which properly corrects chromatic aberration and other types of aberrations and ensures high image quality, low f-number, and low cost. A first lens, second lens, third lens, fourth lens, and fifth lens are arranged in order from the object side and both sides of all the lenses are aspheric surfaces and a diffractive optical surface with a chromatic aberration correction function is formed on one of the surfaces from the object side surface of the first lens to the object side surface of the second lens and on one of the surfaces from the object side surface of the third lens to the object side surface of the fifth lens. All the lenses are made of a plastic material.

Abstract: To provide a high image-quality, low cost, and small sized imaging lens suitable for an imaging lens which is compact and which has high density pixels, and with aberrations corrected satisfactorily. An imaging lens is configured from a first lens, a second lens, a third lens, and a fourth lens arranged in the named order from an object side, wherein both surfaces of each lens are formed from aspheric surface, and a diffraction optics surface exerting chromatic aberration correction function is arranged on any one surface from a surface of the first lens on an object side to a surface of the third lens on the object side, and each lens is configured from plastic material.

Abstract: An imaging lens with large aperture ratio, high-performance and low-cost is provided, which is applied to an imaging element of a small-size and high resolution, in which aberration is corrected satisfactorily and sufficient diffraction resolution is achieved. An imaging lens includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged in sequence from an object side, wherein both surfaces of each lens are formed from aspheric surface, a diffraction optics surface exerting chromatic dispersion function is arranged on a surface on an image side of the second lens, each lens is configured from plastic material, and an aperture ratio is equal to or smaller than F/2.4.

Abstract: A concave surface is formed on an object side of a plastic lens of a one-piece construction, and a convex surface is formed on an image-point side thereof. The concave and convex surfaces are aspherical. A diffractive optical surface that exerts a chromatic dispersion ability is formed on the convex surface, and conditional expressions (1) and (2) below are met. 0.45<L/R<0.95 ??(1) ?0.065<L?(1?n)/R?<0.035n ??(2) where assuming that a position at which a chief ray and an optical axis intersect is regarded as an apparent stop, L denotes a distance to the apparent stop seen from the apex of the convex surface, L? denotes a distance to the apparent stop seen from the apex of the concave surface, R denotes a curvature radius of the convex surface, R? denotes a curvature radius of the concave surface, and n denotes a refractive index of a lens material.

Abstract: A cosmetic application device includes the application stick and the application portion having the brush fixedly mounted at the end of the application stick by the cylindrical capsule, wherein corner portions of the inner surface and the outer surface of the capsule are chamfered so as not to leave sharp edges. Also, the thin and soft protection tube is disposed between the brush and the capsule with the end of the tube extending slightly beyond the end of the capsule, thereby preventing the brush from being bent at an acute angle to avoid broken hair of the brush.

Abstract: A cosmetic application device includes the application stick and the application portion having the brush fixedly mounted at the end of the application stick by the cylindrical capsule, wherein corner portions of the inner surface and the outer surface of the capsule are chamfered so as not to leave sharp edges. Also, the thin and soft protection tube is disposed between the brush and the capsule with the end of the tube extending slightly beyond the end of the capsule, thereby preventing the brush from being bent at an acute angle to avoid broken hair of the brush.

Abstract: A container for storing make-up powder, such as white powder or powder foundation and an application member such as a powder puff includes a structure wherein a make-up material-storing compartment for storing make-up powder has an intermediate lid which is engaged with a container. At least a part of a partition portion of the intermediate lid is formed with an elastic material, with numerous small cuts vertically formed through the partition portion, thereby enabling make-up powder to pass through the small cuts opened by extending the partition portion. The small cuts are arranged in a direction crossing a direction of extension of the partition portion under a normal use condition.

Abstract: In anodic oxidation film processing for expressing pattern by dyeing in two or more colors, the present invention is a method to provide gradation of colors in continuous tones at the gradation portion at the boundary of dyeing. (Problem) To provide a method of realizing at a low cost wear resistant and fading resistant gradation expression on an anodic oxidation film. (Solution) A part of the decolorize portion 15 having a dyed anodic oxidation film is immersed into a solution of decolorize agent 30 or the solution of decolorize agent 30 is adhered onto the decolorize portion 15. In case of immersing the work 100 into the solution of decolorize agent 30, the solution of decolorize agent 30 and the work 100 are relatively moved up and down or a liquid surface 31 of the solution of decolorize agent 30 is waved for adjustment of decolorizing.

Abstract: (Problem) To provide a cosmetic application device having a brush implanted at the end in which the brush is prevented from causing broken hair. (Solution) The cosmetic application device comprises the application stick 4 and the application portion 6 having the brush 7 fixedly mounted at the end of the application stick 4 by the cylindrical capsule 8, characterized in that corner portions 9 of the inner surface and the outer surface of the capsule 8 are chamfered not to leave sharp edges. Also, the thin and soft protection tube 19 is disposed between the brush 7 and the capsule 8 with the end of the tube 19 extending slightly beyond the end of the capsule 8, thereby preventing the brush 7 from being bent at an acute angle to avoid broken hair of the brush 7.

Abstract: A container for storing make-up powder, such as white powder or powder foundation and an application member such as a powder puff includes a structure wherein a make-up material-storing compartment for storing make-up powder has an intermediate lid which is engaged with a container. At least a part of a partition portion of the intermediate lid is formed with an elastic material, with numerous small cuts vertically formed through the partition portion, thereby enabling make-up powder to pass through the small cuts opened by extending the partition portion. The small cuts are arranged in a direction crossing a direction of extension of the partition portion under a normal use condition.

Abstract: A system for picking particular articles, by using a receiving box, out of many articles held on article shelves in order to handle articles at high speeds, highly efficiently and highly reliably in a physical distribution management system.