Abstract: An optical receptacle including a first optical surface configured to allow incidence of light emitted from the light emitting element; a second optical surface configured to emit, toward the optical transmission member, light emitted from the light emitting element and advanced inside the optical receptacle; and a diffraction surface disposed on the first optical surface, on the second optical surface, or on a light path between the first optical surface and the second optical surface. The diffraction surface is configured such that primary diffraction light of the light emitted from the light emitting element reaches an end portion of the optical transmission member, and that zero-order diffraction light of the light emitted from the light emitting element does not reach the end portion of the optical transmission member.

Abstract: The present invention provides a light flux controlling member that can determine the center of a lens surface (light flux control surface) that does not have a circular outer edge in plan view. A light flux controlling member of the present invention includes: a light flux control surface including an outer edge with a shape that is drawn by a point A when a straight line connecting a point O and the point A is rotated 360 degrees or more clockwise or counterclockwise around the point O while a length of the straight line is gradually increased in plan view; and a center determination mark disposed outside of the light flux control surface and on a circle around the point O in plan view.

Abstract: An optical receptacle optically couples a light emitting element and an optical transmission member when disposed between the light emitting element and the optical transmission member, and includes a first optical surface that allows incidence of light emitted from the light emitting element; a second optical surface that emits, toward the optical transmission member, light emitted from the light emitting element and advanced inside the optical receptacle; and a diffraction grating disposed on the first optical surface, on the second optical surface, or on a light path between the first and second optical surfaces. The diffraction grating is configured such that zero-order diffraction light of the light emitted from the light emitting element reaches an end portion of the optical transmission member, and that primary diffraction light of the light emitted from the light emitting element does not reach the end portion of the optical transmission member.

Abstract: To provide an austenitic stainless steel material having a high creep strength and a high creep ductility even in a high-temperature environment at 800° C. or more. An austenitic stainless steel material according to the present disclosure has a chemical composition that includes, in mass %: C: 0.060% or less; Si: 1.0% or less; Mn: 2.00% or less; P: 0.0010 to 0.0400%; S: 0.010% or less; Cr: 10 to 25%; Ni: 25 to 45%; Nb: 0.2 to 2.0%; W: 2.5 to 6.0%; B: 0.0010 to 0.0100%: Al: 2.5 to 4.5%; and the balance being Fe and impurities, and satisfies Formulae (1) and (2), and the sum of the content of dissolved Nb and the content of dissolved W is 3.2 mass % or more. (W/184+Nb/93)/(C/12)?5.5??(1) (W/184+Nb/93)/(B/11)?450??(2) In Formulae (1) and (2), the content in mass % of the corresponding element is substituted for each symbol of element.

Abstract: An optical receptacle optically couples a light emitting element and an optical transmission member when disposed between the light emitting element and the optical transmission member, and includes a first optical surface that allows incidence of light emitted from the light emitting element; a second optical surface that emits, toward the optical transmission member, light emitted from the light emitting element and advanced inside the optical receptacle; and a diffraction grating disposed on the first optical surface, on the second optical surface, or on a light path between the first and second optical surfaces. The diffraction grating is configured such that zero-order diffraction light of the light emitted from the light emitting element reaches an end portion of the optical transmission member, and that primary diffraction light of the light emitted from the light emitting element does not reach the end portion of the optical transmission member.

Abstract: To provide an austenitic stainless steel material having a high creep strength and a high creep ductility even in a high-temperature environment at 800° C. or more. An austenitic stainless steel material according to the present disclosure has a chemical composition that includes, in mass %: C: 0.060% or less; Si: 1.0% or less; Mn: 2.00% or less; P: 0.0010 to 0.0400%; S: 0.010% or less; Cr: 10 to 25%; Ni: 25 to 45%; Nb: 0.2 to 2.0%; W: 2.5 to 6.0%; B: 0.0010 to 0.0100%: Al: 2.5 to 4.5%; and the balance being Fe and impurities, and satisfies Formulae (1) and (2), and the sum of the content of dissolved Nb and the content of dissolved W is 3.2 mass % or more. (W/184+Nb/93)/(C/12)?5.5??(1) (W/184+Nb/93)/(B/11)?450??(2) In Formulae (1) and (2), the content in mass % of the corresponding element is substituted for each symbol of element.

Abstract: An optical receptacle including a first optical surface configured to allow incidence of light emitted from the light emitting element; a second optical surface configured to emit, toward the optical transmission member, light emitted from the light emitting element and advanced inside the optical receptacle; and a diffraction surface disposed on the first optical surface, on the second optical surface, or on a light path between the first optical surface and the second optical surface. The diffraction surface is configured such that primary diffraction light of the light emitted from the light emitting element reaches an end portion of the optical transmission member, and that zero-order diffraction light of the light emitted from the light emitting element does not reach the end portion of the optical transmission member.

Abstract: There is provided an austenitic heat resistant alloy having a chemical composition that contains, in mass percent: C: 0.03 to 0.25%, Si: 0.01 to 2.0%, Mn: 0.10 to 0.50%, P: 0.030% or less, S: 0.010% or less, Cr: 13.0 to 30.0%, Ni: 25.0 to 45.0%, Al: 2.5 to 4.5%, Nb: 0.01 to 2.00%, N: 0.05% or less, Ti: 0 to 0.20%, W: 0 to 6.0%, Mo: 0 to 4.0%, Zr: 0 to 0.10%, B: 0 to 0.0100%, Cu: 0 to 5.0%, REM: 0 to 0.10%, Ca: 0 to 0.050%, Mg: 0 to 0.050%, and the balance: Fe and impurities.

Abstract: The luminous intensity of light which is emitted from the light-emitting device and of which the angle with respect to the optical axis has the absolute value of from 0 to 60° is not more than 1.5% with respect to the maximum luminous intensity of light emitted from the light-emitting device. An angular range in which light of a luminous intensity of not less than 70% of the maximum luminous intensity is emitted, the absolute value of the maximum angle with respect to the optical axis is ?, an output surface is disposed so as to intersect a straight line of which the major angle, among the angles formed by the optical axis and a straight line passing a bottom surface-side end portion of the inclined surface and intersecting the optical axis, is not less than ?.

Abstract: This image display element (10) includes a lenticular sheet (11) and a color sheet (12). The lenticular sheet (11) has a structure in which a plurality of parallel cylindrical lenses (111) are formed integrally, and on the back surface side of the lenticular sheet, provided are rough surface parts (114) and flat surface parts (113) which can be optically differentiated. The flat surface parts (113) are disposed in correspondence with each of the cylindrical lenses (111). The lenticular sheet (11) is created by injection molding of a transparent resin.

Abstract: A marker includes a plurality of convex lenses each including a plurality of convex lenses each including a convex surface part on a front side; and a plurality of patterns formed on a rear surface of the plurality of convex lenses, each pattern corresponding to the convex surface part. Each of the plurality of patterns is composed of optically distinguishable first and second parts formed by a surface shape of the rear surface. The second part is disposed on each corresponding convex surface part. A distance between optical axes of the convex lenses which are adjacent is constant. A distance between centers of the second parts which are adjacent is different from the distance between the optical axes.

Abstract: A marker includes a plurality of convex lenses each including a plurality of convex lenses each including a convex surface part on a front side; and a plurality of patterns formed on a rear surface of the plurality of convex lenses, each pattern corresponding to the convex surface part. Each of the plurality of patterns is composed of optically distinguishable first and second parts formed by a surface shape of the rear surface. The second part is disposed on each corresponding convex surface part. A distance between optical axes of the convex lenses which are adjacent is constant. A distance between centers of the second parts which are adjacent is different from the distance between the optical axes.

Abstract: This image display element (10) includes a lenticular sheet (11) and a color sheet (12). The lenticular sheet (11) has a structure in which a plurality of parallel cylindrical lenses (111) are formed integrally, and on the back surface side of the lenticular sheet, provided are rough surface parts (114) and flat surface parts (113) which can be optically differentiated. The flat surface parts (113) are disposed in correspondence with each of the cylindrical lenses (111). The lenticular sheet (11) is created by injection molding of a transparent resin.

Abstract: According to one embodiment, a server apparatus includes a memory which stores a management table in which the terminal IDs, the connection IDs, connection positions of the telephone terminals to the first connection network, and pieces of position information representing the connection positions of the connection apparatuses are caused to correspond to each other, and a controller which refers to the management table based on the terminal ID of a telephone terminal serving as a source, when an outgoing request of emergency notification to the second communication network is generated in the telephone terminals, selects a connection apparatus which is closest to the telephone terminal serving as the source based on the reference result, and executes outgoing control from the selected connection apparatus to the second communication network.

Abstract: A method includes acquiring creation support information for creating the buying/presenting information in a data format of the control program at the purchasing center, creating the buying/presenting information based on the creation support information, obtaining the buying/presenting information at the user apparatus, recording the obtained buying/presenting information on a recording medium at the user apparatus, and reading out the buying/presenting information from the recording medium in accordance with an initially set condition and selectively transmitting the buying/presenting information to the plurality of extension terminals at the user apparatus.

Abstract: A personal computer having a speech recognition board and speech synthesis board are connected to a key service unit via a control information communication path and media information communication path. Upon executing an exchange service, it is checked if that exchange service uses media information. When the service uses media information, up and down channels are set on the media information communication path, and voice guidance and a voice dial signal for voice dialing are transferred via these channels, thus making the personal computer execute speech recognition required for voice dialing and a search process of a callee telephone number on the basis of the recognition result.