Abstract: A head-mounted display device includes a display element to display an image; a light guide member to emit the image displayed on the display element to an eye of a wearer; a housing including an optical system to guide image light of the image displayed on the display element to the light guide member; and an adjustment member provided on a side of the light guide member opposite to the optical system, and to bend the housing on a side opposite to a face of the wearer.

Abstract: A light source optical system used with an excitation light source configured to emit first color light includes a wavelength conversion unit configured to receive the first color light emitted by the excitation light source and emit second color light with a wavelength different from a wavelength of the first color light, There is a first optical system having a positive power and a second optical system having a positive power provided in this order in an optical path between the excitation light source and the wavelength conversion unit. When a ray parallel to an optical axis of the first optical system is incident on the first optical system, a ray emitted from the first optical system is incident on the second optical system while approaching the optical axis. The second optical system has under-corrected spherical aberration at a paraxial focal position of the second optical system.

Abstract: An illumination device includes a light-emitting device and a control device. The light-emitting device is configured to emit at least light of a first color temperature having a correlated color temperature in a range from 3500 K to 8000 K, the light having a melanopic ratio of a prescribed value within a variation range of the melanopic ratio in which a gap between a maximum value and a minimum value of the melanopic ratio at the first color temperature is 0.30 or more. The control device is configured to control the light emitted from the light-emitting device, within a predetermined amount of time, by varying the melanopic ratio of the light by 0.3 or more, and adjusting the correlated color temperature of the light in a range from 0 K to ±500 K with respect to the first color temperature.

Abstract: Spectral data indicating an intensity of electromagnetic waves, which have been emitted to a cell suspension including a cell and a culture solution and have been subjected to an action of the cell suspension, for each wave number or wavelength is acquired. Preprocessing is performed on the spectral data. A soft sensor, which receives processed data obtained by the preprocessing as an input and outputs state data indicating a state of the cell or the culture solution, is constructed by machine learning using a plurality of combinations of the processed data and the state data as training data. The processed data for the spectral data acquired for a cell suspension including a cell which is being cultured is input to the soft sensor, and the state data output from the soft sensor is acquired.

Abstract: To provide a proton conductive material which has high proton conductivity even under no humidification and does not elute into water. A proton conductive material comprising a proton-source-polymer and a proton-channel-polymer, wherein at least one selected from the group consisting of the proton-source-polymer and the proton-channel-polymer is a polymer containing an aromatic ring, and wherein at least a part of the polymer containing the aromatic ring has a stacked structure formed by n-n interactions, and a proton conductive material comprising a proton-source-crosslinked-polymer, wherein the proton-source-crosslinked-polymer is a polymer having a main skeleton which contains a proton source group and an aromatic ring, and a crosslinked structure which contains a proton channel, and wherein at least a part of the proton-source-crosslinked-polymer has a stacked structure formed by n-n interactions.

Abstract: Disclosed herein are membrane-electrode assemblies and fuel cells comprising an anode comprising a first catalyst; a cathode comprising a second catalyst; and a proton exchange membrane between the anode and cathode; wherein at least one of the proton exchange membrane, anode, and cathode comprise an antioxidant comprising yttrium doped cerium oxide and a metal doped cerium oxide that has a faster release time of cerium ions compared to yttrium doped cerium oxide.

Abstract: A light guide includes: a light guide board configured to allow light incident on an optical entrance to propagate through the light guide board, the light guide board including: the optical entrance; a first face; and at least one partial reflection layer within the light guide board and tilted to the first face. The at least one partial reflection layer is configured to reflect a part of light incident on the at least one partial reflection layer at an incident angle of greater than or equal to a critical angle ?r to allow the reflected light to exit the light guide board through the first surface while transmitting therethrough a remainder of the light incident on the at least one partial reflection layer. Formula below is satisfied: ?r=sin?1(n2/n1) where ?r is the critical angle; n1 is a refractive index of the light guide board; and n2 is a refractive index of the at least one partial reflection layer.

Abstract: Provided are a lens, a stem, an LD chip to emit laser light with a beam center directed along a mounting surface of the stem, and a PD chip having a reflective surface formed with a dielectric multilayer film on its surface, reflecting the laser light emitted from the LD chip toward the lens, and measuring an amount of the laser light, wherein the LD chip is provided with a waveguide portion having a tip portion that is formed on a side of a front end face and has a width of 0.5 to 0.7 ?m, and having a tapered portion that is connected to the tip portion and becomes narrower toward the tip portion at a gradient of 0.018 to 0.033.

Abstract: A light guide includes light guiding members including first and second light guiding members, an optical entrance having a plane on which the light is incident, a light guiding unit to guide the light incident on the optical entrance with repeated reflection, a light beam ejection unit to eject the light to an outside of the light guide, and an extraction unit to reflect the light guided by the light guiding unit toward the light beam ejection unit. The light guiding members guide and eject a light, and the second light guiding member is bonded to, at least, the light guiding unit of the first light guiding member.

Abstract: [Problem] Provided is a proton-conducting membrane that exhibits high proton conductivity even in low-humidity or anhydrous environments. [Solving means] A proton-conducting membrane that comprises a crosslinked polymer and a plasticizer, wherein the crosslinked polymer contains repeating units containing proton-donating groups in an amount equal to 10 mol % or more of repeating units constituting the crosslinked polymer, and at least 60 mass % of the plasticizer is a proton-donating compound with a pKa of 2.5 or less, and, the proton-conducting membrane is a viscoelastic solid in the temperature range of from 20° C. to 125° C.

Abstract: A semiconductor laser device disclosed in this application is characterized; wherein one of the reflective surface and the secondary reflective surface is constituted by a dielectric multi-layer film that is formed on a PD chip for measuring a light quantity of the laser light; and wherein an inclination angle of the reflective surface is set to a value obtained by subtraction of a value that is less than an inclination angle of beam center, from 45 degrees, while an inclination angle of the secondary reflective surface is set to a value obtained by subtraction of a value that is more than the inclination angle of beam center, from 45 degrees.

Abstract: A lens unit includes: a lens group including: an object-side lens closest to an object side in the lens group; an image-side lens closest to an image side in the lens group; and an intermediate lens between the object-side lens and the image-side lens, the object-side lens, the image-side lens, and the intermediate lens being arranged along an optical axis; a first holder holding an edge surface of the object-side lens and an edge surface of the intermediate lens; and a second holder separate from the first holder, the second holder holding the edge surface of the intermediate lens and an edge surface of the image-side lens.

Abstract: An information processing apparatus acquires input information including at least one of a process condition, a culture medium component, or the number and diameters of cells in cell culture, and estimates a quality of an antibody produced from the cells and a quality of the cells after elapse of a predetermined period from a time point at which the input information is acquired, on the basis of the input information and a trained model which is trained in advance using the input information, the quality of the antibody, and the quality of the cells.

Abstract: An information processing apparatus estimates a quality of an antibody produced from cells and a quality of the cells on the basis of a culture state of the cells, searches for the culture state of the cells that improves the estimated quality of the antibody and the estimated quality of the cells, and derives process conditions for cell culture in which a culture state of the cells is the searched culture state.

Abstract: A lighting device includes a plurality of lighting modules and a plurality of control devices. The lighting modules each includes a plurality of light emitting devices aligned in an array form or a staggered form. The control devices are configured to adjust light quantities of the light emitting devices of each of the lighting modules so that, when light is irradiated on a first target surface separated by a prescribed distance from the lighting modules, a sum of light quantities per unit area of a part for which light from the lighting modules overlaps in the first target surface is within ±20% with respect to a light quantity per unit area of a part for which light does not overlap in the first target surface.

Abstract: A semiconductor laser device comprises a semiconductor laser element, a photodetector to receive laser light emitted from the semiconductor laser element, and a stem on which the semiconductor laser element and the photodetector are mounted. The semiconductor laser element is disposed on a side to a stem front face between the stem front face and a farthest portion of the photodetector farthest away from the stem front face of the stem on which the semiconductor laser element and the photodetector are mounted. The photodetector has a light receiving face for receiving the laser light and a reflective film formed thereon in which part of the laser light is transmitted and the rest is reflected, the light receiving face being formed on a side facing the semiconductor laser element.

Abstract: A proton conducting film includes a polymer having a first part and a second part which are connected by a covalent bond and a plasticizer. The first parts aggregate with each other to form a domain at an operation temperature of the proton conducting film, and the second part crosslinks the domains. The second part has a proton accepting group, and the plasticizer contains a proton donating compound having a pKa of 2.5 or less, and thus the plasticizer penetrates into the second part, and a glass transition temperature of the polymer is lowered compared to when the plasticizer is not included.

Abstract: There are provided a learning apparatus, an operation method of the learning apparatus, a non-transitory computer readable recording medium storing an operation program of the learning apparatus, and an operating apparatus capable of further improving accuracy of prediction of a quality of a product by a machine learning model in a case where learning is performed by inputting, as learning input data, multi-dimensional physical-property relevance data, which is derived from multi-dimensional physical-property data of the product, to the machine learning model.

Abstract: What is provided are: an active-layer ridge which is composed of an n-type cladding layer, an active layer, a first p-type cladding layer and a second n-type blocking layer that are stacked in this order on an n-type InP substrate, and which is formed to project from a position lower than the active layer; burying layers by which both side portions of the active-layer ridge are buried up to a position higher than the active layer; first n-type blocking layers which are each stacked on a front-surface side of each of the burying layers, to be placed on the both sides of the ridge; and a second p-type cladding layer by which an end portion of the active-layer ridge and the first n-type blocking layers are buried thereunder; wherein a current narrowing window for allowing a hole current to pass therethrough is provided in and at a center of the second n-type blocking layer placed at a top of the active-layer ridge.

Abstract: A virtual image display device includes: an image display element that displays an image to be displayed as a virtual image; a propagation optical system that propagates light from the image display element; and a light guide member that guides the light propagated by the propagation optical system. The light guide member includes: a light beam incident part that introduces light including image information from the propagation optical system into the light guide member; an image extractor that extracts the light including image information from an inside of the light guide member; and an image emitter that emits the light including image information to an outside of the light guide member. The propagation optical system includes one or more optical members each having a curved surface shape that is non-rotationally symmetric with respect to an optical axis.