Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Sharp Kabushiki Kaisha Corporation

Toshiaki Takano

Jun Murata

Tomokazu Tokunaga

Masaaki Sunohara

Tetsuya Suzuki

Hideo Nojima

Yoshinori Sekoguchi

Kazuo Nishikawa

Mamoru Morikawa

Yasukata Takeda

Toru Nanba

Katsutoshi Noguchi

Yoshiyuki Shimizu

Akio Miyata

Shoji Nakamura

Minoru Onoda

Takeshi Furukawa

Takahisa Kondou

Kenji Inoue

Makoto Umetani

Kiyoshi Kuribayashi

Hideto Monji

Kazuaki Takagi

Takashi Kohama

Hiroyasu Yamashita

Fumiaki Shimizu

Chizuo Izumino

Yoshinori Shirafuzi

Yoshio Inoue

Tomohisa Ito

An ion generating device generates O(HO)(where n is a natural number) as negative ions and H(HO)(where m is a natural number) as positive ions, and discharges those ions into the air so that airborne germs are killed through an oxidation reaction by hydrogen peroxide HOor radical hydroxyl OH generated through as an active species a chemical reaction between the negative and positive ions. Satisfactory sterilization is achieved when the negative and positive ions are generated in such a way that the concentrations of the negative and positive ions are both 10,000 ion/cc at a distance of 10 cm from the point at which they are generated.

Sterilization method, ion generating device, ion generating apparatus, and air conditioning apparatus

The present invention relates to composite optical elements, and particularly to a composite optical element including a first optical component and a second optical component coupled to the first optical component. The present invention is advantageous in enhancing optical properties. A composite optical element () includes a first optical component () and a second optical component (). The first optical component () is made of first glass and has a lens surface (). The second optical component () is made of a material different from the first glass, is coupled to the first optical component () at a lens surface (), and has a lens surface () at a side opposite to the first coupling surface (). The lens surface () partially has a first uneven region (). The lens surface () partially has a second uneven region ().

Composite optical element

A cemented optical element includes a convex lens and a concave lens. The convex lens has a first convex surface and a second convex surface that are rotationally symmetric with respect to an optical axis. The convex lens has an edge with a thickness of substantially zero. The concave lens has a concave surface bonded to the first convex surface of the convex lens. Preferably, the peripheral portion of the concave lens extends radially outwardly beyond the convex lens to the extent that it is located within an area surrounded by an extension zone of the second convex surface of the convex lens.

Cemented optical element

This is to shed light on a glass composition suitable for a thin lens, and provide a lens (an optical component) manufactured with using the glass. A concave lens as an optical component is made of glass containing 12 to 16% of BO, 35 to 44% of LaO, and 3 to 8% of ZnO, expressed as wt %. The concave lens has a thickness tin its center portion of 0.5 mm or less, and a ratio (W/t) of an external diameter W with respect to the thickness tof 24 or more. The concave lens can be produced suitably by press forming.

Optical component and method for producing the same

An optical element includes: an optically functional part having a first convex surface and a second convex surface intersecting with an optical axis and facing opposite to each other; and an outer peripheral part provided around the optically functional part, the outer peripheral part having a first outer peripheral surface extending from a periphery of the first convex surface and a second outer peripheral surface extending from a periphery of the second convex surface. The first outer peripheral surface and the second outer peripheral surface each are formed to be tapered. A thickness of the outer peripheral part in an optical axis direction is reduced toward a direction moving away from the optical axis.

Optical element

A concave lens as an optical component is made of glass containing 20 to 22% of BO, 30 to 40% of LaO, and 19 to 25% of ZnO, expressed as wt %. The concave lens has a thickness tin its center portion of 0.5 mm or less, and a ratio (W/t) of a diameter W with respect to the thickness tof 24 or more. The concave lens can be produced suitably by press forming.

The present invention relates to a composite lens and a method for manufacturing the same, particularly to a composite lens in which a second lens component is coupled to a first lens component at part of a first surface, and intends to improve optical characteristics. A composite lens () has a first lens component () and a second lens component (). The first lens component () has a first surface including a first lens surface (), a peripheral surface () surrounding the first lens surface () and a ring surface () included in the peripheral surface () and surrounding the first lens surface (), and a second lens surface () on the opposite side of the first lens surface (). The second lens component () is coupled to the first lens component () at part of the first surface surrounded by the ring surface (). The ring surface () is positioned on a portion of the first lens component protruding from a joint portion () between the first lens surface () and the peripheral surface () in a first direction from the second lens surface () to the first lens surface () along an optical axis of the first lens component () and is exposed out of the second lens component ().

Composite lens and method for manufacturing the same

The present invention relates to composite optical elements, and particularly to a composite optical element in which second and third optical components are coupled to a first optical component. The present invention is advantageous in enhancing optical properties. A composite optical element () includes first, second and third optical components (). The first optical component () has a lens surface (). The second optical component () is coupled to the first optical component () at the lens surface () and has a lens surface () at a side opposite to a first coupling surface () at which the second optical component () is coupled to the first optical component (). The third optical component () is coupled to the second optical component () at the lens surface () and has a lens surface () at a side opposite to a second coupling surface () at which the third optical component () is coupled to the second optical component (). The lens surface () partially has a first uneven region (). The lens surface () partially has a third uneven region (). The lens surface () partially has a third uneven region ().

The present invention belongs to a technical field related to a composite optical element including a first optical component and a second optical component coupled to the first optical component. In a composite optical elementincluding a first optical componentand a second optical componentcoupled to the first optical component, shape accuracy of the second optical componentis improved to prevent reduction in optical performance. A ring member () is placed on a peripheral portion of a lens surface () of the first optical component (), the ring member () having a height hfrom the lens surface () substantially uniform in a circumferential direction of the first optical component ().

Composite optical element and method for manufacturing the same

A prismincludes a prism body. The prism bodyis formed into a polygonal column. At least one of a plurality of ridgesof the prism bodyis formed into an R-plane.

Prism, imaging device and lighting device including the same, and prism manufacturing method

Sterilization method

A prismincludes a prism bodyformed into a polygonal column. At least one ridgeof a plurality of ridgesof the prism bodyis formed into a flat face. A joint partbetween the flat faceand at least oneof the facesof the prism bodywhich are adjacent to each other with the ridgein the flat faceinterposed is formed into an R-plane.

An air conditioning apparatus incorporates an ion generating device that generates positive and negative ions by applying an alternating-current voltage between electrodes. The generated positive and negative ions coexist in the air and, when they attach to the surfaces of airborne bacteria, they react chemically with each other and generate radical hydroxyl and hydrogen peroxide, which extract hydrogen atoms from the cells of the bacteria and thereby kill them. This sterilizing effect is combined with the temperature-conditioning, dehumidifying, humidifying, air-purifying, and other functions of the air conditioning apparatus to bring about a comfortable and healthful indoor environment.

Air refining device and ion generator used for the device

A method for manufacturing preforms used in molding optical elements includes: (1) forming an array made from a material for optical elements, in which a plurality of preform portions used in molding optical elements are connected; (2) applying vibration to the outer peripheral part of the preform portion in the thickness direction of the array by a pair of punches; and then (3) punching the preform portions.

Method for manufacturing preforms used in molding optical elements and

A method for making optical preforms of optical elements without residual stress or distortion is provided. In this method, an optical material is supplied between upper and lower molds. The upper mold has a plurality of recesses arranged in a predetermined pitch, and each recess corresponds to a first surface shape of the optical element. The lower mold has a plurality of recesses facing the recesses of the upper mold and each recess of the lower mold corresponds to a second surface shape of the optical element. The supplied optical material is pressed between the upper and lower molds to be a set of optical preforms. The set of optical preforms is processed by die punching or tool cutting to separate each optical preform from the set of optical preforms. Each optical preform is used for producing an optical element by further pressing. Alternatively, optical element can be formed directly by the press molding process.

Growing community of inventors

Osaka, Japan

Toshiaki Takano