Abstract: Provided is a method capable of efficiently preparing a photoaged cell. Also provided is a novel cell marker that can be used for detection, quantification, or sorting out of a photoaged cell. The present disclosure includes a method for preparing a photoaged cell, including the step of: irradiating a cell with light having an emission peak within a wavelength range of 300 to 315 nm, and a method for detecting or quantifying a photoaged cell, including the step of: detecting or quantifying expression of at least one gene selected from the group consisting of GPR17, CD34, GABRR1, OR2AG2, CMKLR1, CDH19, CD93, AVPR2, CCR7, and OXGR1 in a cell.

Abstract: An apparatus for inactivating bacteria or viruses in a space, the apparatus includes a light source unit that emits ultraviolet light having a peak wavelength within a wavelength range of 190 nm or more and less than 240 nm, an irradiation region changing mechanism that changes an irradiation direction of the ultraviolet light of the light source unit, and a driving unit that drives the irradiation region changing mechanism to change the irradiation direction of the ultraviolet light of the light source unit.

Abstract: Provided is a lighting device with an inactivation function, the lighting device allowing the addition of an inactivation function while being equal to conventional lighting devices in device size. The lighting device with the inactivation function includes: a UVC light source to emit ultraviolet light having a peak wavelength in a wavelength range from 200 nm to 230 nm; an LED light source to emit visible light; a single unit of an AC/DC converter to convert an AC voltage derived from an external power source into a DC voltage and output the DC voltage; a UVC light source-specific circuit part to convert the DC voltage output from the AC/DC converter into a voltage for lighting the UVC light source; and an LED light source-specific circuit part to convert the DC voltage output from the AC/DC converter into a current for lighting the LED light source.

Abstract: A semiconductor laser device includes an edge-emitting type first semiconductor laser element having a relatively short oscillation wavelength at a room temperature, and an edge-emitting type second semiconductor laser element having a relatively long oscillation wavelength at the room temperature. A difference in the oscillation wavelength at the room temperature between the first semiconductor laser element and the second semiconductor laser element is 20 nm or less. At least one of a film thickness, a refractive index, and a number of layers is different between reflective films on emitting edges of the first semiconductor laser element and the second semiconductor laser element. An emitting side reflectance of the first semiconductor laser element at an operating temperature upper limit is higher than an emitting side reflectance of the second semiconductor laser element at the operating temperature upper limit.

Abstract: A light source device includes a plurality of LED elements dispersed and arranged in a plane direction orthogonal to an optical axis, a first optical system that converts light emitted from each of the LED elements into collimated light; and a second optical system that focuses the collimated light. The first optical system includes a first collimating optical system including optical components disposed corresponding to the LED elements and a second collimating optical system including optical components disposed corresponding to the LED elements at the latter stage of the first collimating optical system. The second collimating optical system is capable of adjusting a relative optical positional relation with respect to the LED elements and the first collimating optical system when viewed in a direction of the optical axis in a state in which the LED elements and the first collimating optical system are fixed.

Abstract: To provide a plate with which, although the plate has a plurality of microchannels or a microchannel in which a plurality of branch channels are formed, when a sample flowing through a microchannel is observed by a microscope, it is possible to easily identify the position of the microchannel or the branch channel under observation without reducing the magnification of the microscope. A plate having a microchannel therein includes an identification mark for identifying a position of the microchannel in a plane direction of the plate. When the microchannel includes a plurality of mutually independent microchannels, the identification mark is preferably formed for each microchannel. When the microchannel includes a source channel communicating with an injection port through which a sample is injected and a plurality of branch channels communicating with the source channel, the identification mark is preferably formed for each of the source channel and the branch channels.

Abstract: Providing a super-high pressure lamp having increased pressure resistance. The super-high pressure lamp includes: an arc tube; and a sealing portion in which a front end of an exhaust pipe capable of exhausting gas in the arc tube or supplying gas into the arc tube is sealed, wherein, in the sealing portion, a height of a first sealed space, which has a tapered shape that becomes narrower toward a front end of the sealing portion, is larger than twice an inner diameter of the first sealed space.

Abstract: To provide an ultraviolet light irradiation device capable of inactivating bacteria, viruses, and the like with increased efficiency while ensuring safety. An ultraviolet light irradiation device according to the present invention includes a light source to emit ultraviolet light having a wavelength within a range of 190 nm or more and less than 240 nm, a housing to house the light source, a light extraction part to extract the ultraviolet light emitted from the light source out of the housing, and a diffusion transmission member to diffuse and transmit the ultraviolet light.

Abstract: The ultraviolet therapy apparatus includes a light source part having an LED light source, a controller that controls lighting of the LED light source, an input unit that inputs a set irradiation dose of a therapeutic light to be applied to a patient on the assumption that a reference light is used for the therapeutic light, a storage unit that stores at least one parameter for modifying the set irradiation dose. The controller includes a modifier that modifies the set irradiation dose on the basis of the parameter stored in the storage unit, and a lighting controller that causes the LED light source to provide the modified irradiation dose. The modified irradiation dose is derived from a degree of effect of the reference light on a human body and a degree of effect on the human body caused by the ultraviolet light output from the light source part.

Abstract: An illumination device irradiates a predetermined area with measurement light whose wavelength changes over time. A light reception device includes an optical sensor that detects diffuse transmission light of an object located in the predetermined area. The light reception device is structured such that the optical sensor receives a component of the diffuse transmission light through the object which propagates in a direction deviated from an optical axis of the measurement light.

Abstract: An optical heating apparatus includes: a plurality of heating sources to optically heat a substrate; a plurality of light transmissive containers in which the heating sources are inserted and which transmit light from the heating sources; and a vacuum chamber including a housing having an inside in which the substrate can be placed, the housing having a hole to insert the plurality of light transmissive containers at a position opposed to the substrate placed in the inside, wherein each of the plurality of heating sources has at least one light emitting element, and the plurality of heating sources emit light toward the substrate placed in the vacuum chamber through the plurality of light transmissive containers inserted in the hole and protruding from the housing toward the inside.

Abstract: A photo treatment device includes a gas generator that generates a mixed gas in which a raw material gas containing an organic compound having at least one of oxygen atoms and nitrogen atoms is mixed with a carrier gas at a desired mixing ratio; a chamber connected to the gas generator for allowing ventilation so as to enable the mixed gas to be supplied thereinside and that is capable of placing the workpiece thereinside; and a light source that irradiates the raw material gas with ultraviolet light having intensity at least in a wavelength band of 205 nm or less. The surface of the workpiece is modified with the raw material gas that has been irradiated with the ultraviolet light.

Abstract: A light source device includes a plurality of LED elements dispersed and arranged in a plane direction orthogonal to an optical axis, a first optical system that converts light emitted from each of the LED elements into collimated light; and a second optical system that focuses the collimated light. The first optical system includes a first collimating optical system including optical components disposed corresponding to the LED elements and a second collimating optical system including optical components disposed corresponding to the LED elements at the latter stage of the first collimating optical system. The second collimating optical system is capable of adjusting a relative optical positional relation with respect to the LED elements and the first collimating optical system when viewed in a direction of the optical axis in a state in which the LED elements and the first collimating optical system are fixed.

Abstract: Providing a super-high pressure lamp having increased pressure resistance. The super-high pressure lamp includes: an arc tube; and a sealing portion in which a front end of an exhaust pipe capable of exhausting gas in the arc tube or supplying gas into the arc tube is sealed, wherein, in the sealing portion, a height of a first sealed space, which has a tapered shape that becomes narrower toward a front end of the sealing portion, is larger than twice an inner diameter of the first sealed space.

Abstract: Provided is a method of protection treatment in a target space where inactivation of bacteria and/or viruses is performed. The target space is a space where a light source emitting ultraviolet light having light output in a specific wavelength band belonging to within a range from 190 nm to 235 nm has already been disposed or is planned to be disposed. The method of protection treatment includes the steps of attaching a base material whose main component is a chlorine-based resin, to an interior surface of the target space or a surface of an object disposed in the target space, and forming a protective layer on a surface of the base material. The protective layer contains a material that exhibits resistance to the ultraviolet light.

Abstract: A method of manufacturing an optical component includes the steps of irradiating a base material that is substantially transparent to light having a wavelength for which the optical component is used with linearly polarized ultraviolet light having a wavelength of 200 nm or less, stacking a polymerizable liquid crystal compound on the base material after the irradiation with the linearly polarized ultraviolet light, and forming a retardation layer by allowing the polymerizable liquid crystal compound to be aligned in accordance with the state of the base material.

Abstract: An ultraviolet therapy apparatus having an LED light source can achieve a stable therapeutic effect regardless of the temperature of the LED light source. The ultraviolet therapy apparatus includes an LED light source configured to emit light including ultraviolet light; a controller configured to control lighting of the LED light source; and a measurement unit configured to detect change in a temperature of the LED light source from a reference temperature. The controller includes a calculator configured to calculate a modifying value for modifying an irradiation dose of the ultraviolet light on the basis of change in a degree of effect on a human body caused by change in spectral spectrum of the light due to change in the temperature detected by the measurement unit, and a lighting controller configured to cause the LED light source to emit the light on the basis of the modifying value calculated by the calculator.

Abstract: The xenon lamp for a projector, the xenon lamp comprises a light-emitting tube and an anode and a cathode that are arranged inside the light-emitting tube so as to face each other through a gap in a first direction, the anode including: a body part and a chip part whose cross-sectional area cut along a first plane orthogonal to the first direction is smaller than the cross-sectional area of the body part, the chip part including: a first part joined to the body part, the first part protruding toward the cathode and having a tapered shape; and a second part joined to the first part, the second part protruding toward the cathode and having a shape such that an angle of inclination of an outer profile of the second part differs from an angle of inclination of an outer profile of the first part.

Abstract: A light source device includes at least one semiconductor laser and a laser-excited light source. The laser-excited light source has a phosphor excited by the semiconductor laser(s), and an optical system for extracting fluorescence emitted from the phosphor. The light source device also includes a plurality of LED light sources for emitting light having wavelengths different from a wavelength of the fluorescence. The light source device also includes a composite optical system for synthesizing the fluorescence from the laser-excited light source with the light from the LED light sources, and emitting the synthesized light from a light emitting portion. The LED light sources include an LED light source configured to emit light in an ultraviolet range. The LED light source configured to emit the light in the ultraviolet range is disposed at a position farther from the laser-excited light source than the remaining LED light source(s).

Abstract: Provided is a method of inactivating bacteria and/or viruses in a target space using ultraviolet light having wavelengths less than 240 nm, while suppressing the progress of deterioration of a plant. The present invention is a method of inactivating bacteria and/or viruses in a target space where a plant is placed, the method includes a process (a) of irradiating the target space with ultraviolet light having light intensity in a wavelength band belonging to within a range from 190 nm to 235 nm from an ultraviolet light source during a time period when the plant is irradiated with sunlight or visible light from an illumination light source.