Abstract: A light source module includes a light emitting element having a resonator formed of a photonic crystal structure, and a polarization conversion element, wherein the polarization conversion element includes a polarization split layer that reflects first polarized light toward a first direction, and transmit second polarized light toward a second direction, a reflecting layer that reflects the first polarized light, toward the second direction, and a retardation layer which is disposed in a light path of one of the first polarized light and the second polarized light, and converts the one of the first polarized light and the second polarized light into another of the first polarized light and the second polarized light, the resonator has a resonant part, and in a plan view, a length of the resonant part in the first direction is shorter than a length of the resonant part in a third direction perpendicular to the first direction and the second direction.

Abstract: A projector includes a laser source, a light modulation element configured to modulate light emitted from the laser source in accordance with image information, and a light transmissive member disposed in a light path between the laser source and the light modulation element, and configured to transmit the light emitted from the laser source, wherein the laser source and the light modulation element are bonded to the light transmissive member, the laser source includes a substrate, and a laminated structure provided to the substrate, and having a light emitting layer configured to emit light, and the laminated structure constitutes a photonic crystal structure configured to confine the light emitted by the light emitting layer in an in-plane direction of the substrate, and emit the light emitted by the light emitting layer in a normal direction of the substrate.

Abstract: A projector includes a laser source, a light modulation element configured to modulate light emitted from the laser source in accordance with image information, and a light transmissive member disposed in a light path between the laser source and the light modulation element, and configured to transmit the light emitted from the laser source, wherein the laser source and the light modulation element are bonded to the light transmissive member, the laser source includes a substrate, and a laminated structure provided to the substrate, and having a light emitting layer configured to emit light, and the laminated structure constitutes a photonic crystal structure configured to confine the light emitted by the light emitting layer in an in-plane direction of the substrate, and emit the light emitted by the light emitting layer in a normal direction of the substrate.

Abstract: A projector includes a laser source, a light modulation element configured to modulate light emitted from the laser source in accordance with image information, and a light transmissive member disposed in a light path between the laser source and the light modulation element, and configured to transmit the light emitted from the laser source, wherein the laser source and the light modulation element are bonded to the light transmissive member, the laser source includes a substrate, and a laminated structure provided to the substrate, and having a light emitting layer configured to emit light, and the laminated structure constitutes a photonic crystal structure configured to confine the light emitted by the light emitting layer in an in-plane direction of the substrate, and emit the light emitted by the light emitting layer in a normal direction of the substrate.

Abstract: A light emitting apparatus according to an aspect of the present disclosure includes a base and a plurality of resonators provided at a first surface of the base. The plurality of resonators each include a photonic crystal structure having a periodic structure. The plurality of resonators form a light emission region that emits light resonate due to the periodic structure, and the plurality of resonators include a first resonator and a second resonator. The distance from the center of the light emission region to the second resonator is longer than the distance from the center of the light emission region to the first resonator. The resonance length of the second resonator is longer than the resonance length of the first resonator.

Abstract: A projector includes first through fourth light emitters defining a placement region for fifth light emitters. The placement region is rectangular defined by first through fourth sides. The light intensity of a sixth light emitter closest to the middle of the first side is smaller than the light intensities of the first and second light emitters. Fifth light emitters arranged in a first direction from the center of the first light emitter toward the middle of the first side have light intensities that decrease toward the positive side in the first direction between the first light emitter and the sixth light emitter, and fifth light emitters arranged in a second direction from the center of the second light emitter toward the middle of the first side have light intensities that decrease toward the positive side in the second direction between the second light emitter and the sixth light emitter.

Abstract: A light emitting device includes resonant parts constituted by a photonic crystal structure, and rows each of which includes the resonant parts arranged along a first direction, wherein light resonating in the resonant part resonates in a first resonant direction and a second resonant direction, the rows are arranged along a second direction, the rows include a first row, and a second row, a distance between the resonant part located furthest at one side of the first direction in the first row and the resonant part located furthest at the one side of the first direction in the second row is different from a distance between the resonant part located furthest at the one side of the first direction and the resonant part located furthest at another side of the first direction in the first row, the first and second resonant directions are along the first and second axes respectively, and in a plan view a length along the first direction of the resonant part and a length along the second direction of the resonant

Abstract: A light source module includes a light emitting element having a resonator formed of a photonic crystal structure, and a polarization conversion element, wherein the polarization conversion element includes a polarization split layer that reflects first polarized light toward a first direction, and transmit second polarized light toward a second direction, a reflecting layer that reflects the first polarized light, toward the second direction, and a retardation layer which is disposed in a light path of one of the first polarized light and the second polarized light, and converts the one of the first polarized light and the second polarized light into another of the first polarized light and the second polarized light, the resonator has a resonant part, and in a plan view, a length of the resonant part in the first direction is shorter than a length of the resonant part in a third direction perpendicular to the first direction and the second direction.

Abstract: A light emitting device includes resonant parts constituted by a photonic crystal structure, and rows each of which includes the resonant parts arranged along a first direction, wherein light resonating in the resonant part resonates in a first resonant direction and a second resonant direction, the rows are arranged along a second direction, the rows include a first row, and a second row, a distance between the resonant part located furthest at one side of the first direction in the first row and the resonant part located furthest at the one side of the first direction in the second row is different from a distance between the resonant part located furthest at the one side of the first direction and the resonant part located furthest at another side of the first direction in the first row, the first and second resonant directions are along the first and second axes respectively, and in a plan view a length along the first direction of the resonant part and a length along the second direction of the resonant

Abstract: A wavelength conversion element includes: a wavelength conversion layer including a first surface on which excitation light is incident, and a second surface opposed to the first surface; a scattering layer provided to face the second surface, containing a plurality of particles, and at least scattering fluorescence obtained by wavelength-converting the excitation light by the wavelength conversion layer; and a reflective layer provided to face the scattering layer and reflecting the excitation light or the fluorescence. The particle diameter of the particle is smaller than the wavelength of the fluorescence.

Abstract: A projector includes a laser source, a light modulation element configured to modulate light emitted from the laser source in accordance with image information, and a light transmissive member disposed in a light path between the laser source and the light modulation element, and configured to transmit the light emitted from the laser source, wherein the laser source and the light modulation element are bonded to the light transmissive member, the laser source includes a substrate, and a laminated structure provided to the substrate, and having a light emitting layer configured to emit light, and the laminated structure constitutes a photonic crystal structure configured to confine the light emitted by the light emitting layer in an in-plane direction of the substrate, and emit the light emitted by the light emitting layer in a normal direction of the substrate.

Abstract: A projector includes first through fourth light emitters defining a placement region for fifth light emitters. The placement region is rectangular defined by first through fourth sides. The light intensity of a sixth light emitter closest to the middle of the first side is smaller than the light intensities of the first and second light emitters. Fifth light emitters arranged in a first direction from the center of the first light emitter toward the middle of the first side have light intensities that decrease toward the positive side in the first direction between the first light emitter and the sixth light emitter, and fifth light emitters arranged in a second direction from the center of the second light emitter toward the middle of the first side have light intensities that decrease toward the positive side in the second direction between the second light emitter and the sixth light emitter.

Abstract: A wavelength conversion element according to an aspect of the invention includes a wavelength conversion section having a first surface, a reflection section having a reflection surface that reflects the fluorescence, a light-transparent bonding section that bonds the wavelength conversion section to the reflection section, and a refractive index interface which is provided between the first surface and the reflection surface and where a first medium and a second medium having refractive indices different from each other are in contact with each other. The refractive index of the first medium is higher than the refractive index of the second medium, and regarding the fluorescence traveling from the wavelength conversion section toward the reflection section, the angular distribution of the fluorescence having passed through the refractive index interface is narrower than the angular distribution of the fluorescence before passing through the refractive index interface.

Abstract: A wavelength conversion element includes: a wavelength conversion layer including a first surface on which excitation light is incident, and a second surface opposed to the first surface; a scattering layer provided to face the second surface, containing a plurality of particles, and at least scattering fluorescence obtained by wavelength-converting the excitation light by the wavelength conversion layer; and a reflective layer provided to face the scattering layer and reflecting the excitation light or the fluorescence. The particle diameter of the particle is smaller than the wavelength of the fluorescence.

Abstract: A wavelength conversion element according to an aspect of the invention includes a wavelength conversion section having a first surface, a reflection section having a reflection surface that reflects the fluorescence, a light-transparent bonding section that bonds the wavelength conversion section to the reflection section, and a refractive index interface which is provided between the first surface and the reflection surface and where a first medium and a second medium having refractive indices different from each other are in contact with each other. The refractive index of the first medium is higher than the refractive index of the second medium, and regarding the fluorescence traveling from the wavelength conversion section toward the reflection section, the angular distribution of the fluorescence having passed through the refractive index interface is narrower than the angular distribution of the fluorescence before passing through the refractive index interface.

Abstract: A projector includes: a light source having a plurality of light emitting sections; a light modulation device including a reflecting section adapted to reflect the light from the light source in accordance with image information; and a projection lens adapted to project an image formed by the light modulation device, wherein the light from the light source obliquely enters the reflecting section, the light source includes a first region where the light emitting sections are disposed at a first density, and a second region where the light emitting sections are disposed at a second density higher than the first density, and a distance between the first region and the reflecting section is shorter than a distance between the second region and the reflecting section.

Abstract: A printing system includes following components. Each printing apparatus prints print document information and outputs a document. A terminal transmits print document information stored therein and location information. A print server receives, from the terminal, the print document information and the location information, generates authentication information in association with the print document information, identifies one printing apparatus in accordance with the received location information and location information of the printing apparatuses, and transmits the generated authentication information to the identified printing apparatus. The identified printing apparatus displays authentication reference information in accordance with the received authentication information. The terminal receives input of information based on the authentication reference information and transmits the input information to the print server.

Abstract: An illumination device includes a light source including plural light emitting devices arranged in a pattern and that generate and guide light, the light emitting devices having tilted gain regions wherein guiding directions of the light are tilted with respect to a perpendicular of output surfaces of the light source, an optical axis conversion device that bends optical axes of the light output from the light source, and a light distribution control device that controls a light distribution angle of the light output from the optical axis conversion device, wherein the light emitting devices are super luminescent diodes, and the light output from the light distribution control device diverge.

Abstract: A printing system includes following components. Each printing apparatus prints print document information and outputs a document. A terminal transmits print document information stored therein and location information. A print server receives, from the terminal, the print document information and the location information, generates authentication information in association with the print document information, identifies one printing apparatus in accordance with the received location information and location information of the printing apparatuses, and transmits the generated authentication information to the identified printing apparatus. The identified printing apparatus displays authentication reference information in accordance with the received authentication information. The terminal receives input of information based on the authentication reference information and transmits the input information to the print server.

Abstract: A projector includes: a housing; an optical element accommodated in the housing; and an air supply unit configured to generate a flow of cooling air for cooling a cooling target element including the optical element, a dustproof area into which the cooling air can be introduced from the outside of the housing via a dustproof filter is formed inside the housing, the optical element is accommodated in the dustproof area of the housing, and the air supply unit includes a first air supply unit configured to introduce the cooling air from the outside of the housing to the dustproof area via the dustproof filter, and a second air supply unit accommodated in the dustproof area and configured to supply the cooling air introduced to the dustproof area by the first air supply unit toward the optical element.