Abstract: Methods and apparatus provide for: generating virtual space images by specifying from among a plurality of viewpoint positions and a plurality of directions of line of sight in the virtual space; and displaying the virtual space images on a head-mounted display, where the generating includes changing from a currently selected viewpoint position among the plurality of viewpoint positions to a newly selected viewpoint position among the plurality of viewpoint positions, which is selected in accordance with operation by a user, when generating the virtual space images in response to changing to the newly selected viewpoint position, the generating includes specifying, as a new direction of line of sight among the plurality of directions of line of sight, a direction in which a first position in the virtual space is seen from the newly selected viewpoint position, and at least some of the plurality of viewpoint positions are separated from each other.

Abstract: Provided is a near-infrared light emitting fluorescent material including an oxide containing Gd, Cr and Al, in which a molar ratio of Cr is in a range of 0.0085 or more and 0.05 or less when a total molar ratio of Gd and Cr is defined as 1 in 1 mol of the chemical composition of the near-infrared light emitting fluorescent material, and having a light emission peak wavelength in a range of 690 nm or more and 790 nm or less, as excited with light having a light emission peak wavelength in a range of 380 nm or more and 480 nm or less.

Abstract: An output of light suitable for growing plants is controlled using a white light source. A growing system including a greenhouse and a plurality of lighting devices disposed above a plant to be grown in the greenhouse and utilizing natural light includes a plurality of white light sources, a plurality of auxiliary light sources each of which is configured to emit red light and far-red light, and an illumination controller configured to control a degree of emission of light from the white light sources or the auxiliary light sources of the plurality of lighting devices, the illumination controller configured to start or stop controlling emission of light from the white light sources or the auxiliary light sources according to sunrise or sunset.

Abstract: Provided are a light emitting device and an illumination device.

Abstract: Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.

Abstract: Provided is a method for producing a fluorescent material, including: preparing a raw material mixture including a compound containing at least one rare earth element Ln selected from the group consisting of Y, Gd, La, Lu, Sc and Sm, a compound containing at least one Group 13 element selected from Al and Ga, a compound containing Tb, a compound containing Ce and a compound containing Eu, wherein the raw material mixture contains each compound such that each element satisfies a composition represented by the following formula (I): (Ln1-a-b-cTbaCebEUc)3(Al1-dGad)5O12 (I), wherein a, b, c and d satisfy 0.25?a<1, 0.008×10?2?b?1.5×10?2, 0.012×10?2?c?2×10?2, and 0?d?0.85, and heat-treating the raw material mixture to obtain the fluorescent material.

Abstract: Provided is a fluorescent material having a composition of rare earth aluminum-gallate, which radiates light in not only a visible light region but also a near-infrared region and has improved light emission intensity in a near-infrared region. The fluorescent material has a composition of rare earth aluminum-gallate, including at least one rare earth element Ln selected from the group consisting of Y, Gd, Sc, Lu, and La; at least one element selected from Al and Ga; Ce; and Nd. When a total molar composition ratio 5 of Al and Ga is used as a basis, a total molar ratio of Ln, Ce, and Nd is 3; a molar ratio of Ce is a product of 3 and a value of a parameter x; a molar ratio of Nd is a product of 3 and a value of a parameter y. The parameter x is in a range of 0.03 or more and 0.015 or less. The parameter y is in a range of 0.002 or more and 0.06 or less.

Abstract: Provided is a near-infrared light emitting fluorescent material including an oxide containing Gd, Cr and Al, in which a molar ratio of Cr is in a range of 0.0085 or more and 0.05 or less when a total molar ratio of Gd and Cr is defined as 1 in 1 mol of the chemical composition of the near-infrared light emitting fluorescent material, and having a light emission peak wavelength in a range of 690 nm or more and 790 nm or less, as excited with light having a light emission peak wavelength in a range of 380 nm or more and 480 nm or less.

Abstract: Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.

Abstract: Provided are a fluorescent material and a light emitting device using the fluorescent material. The fluorescent material has a composition of a rare earth aluminum gallate containing at least one rare earth element Ln selected from the group consisting of Y, Gd, La, Lu, Sc and Sm; at least one Group 13 element selected from Al and Ga; Tb; Ce; and Eu. When a total molar composition ratio of Al and Ga is set to 5, a total molar ratio of Ln, and Tb, Ce and Eu is 3, a molar ratio of Tb is a product of 3 and a parameter a, a molar ratio of Ce is a product of 3 and a parameter b, a molar ratio of Eu is a product of 3 and a parameter c, a molar ratio of Ga is a product of 5 and a parameter d, the parameter a is 0.25 or more and less than 1, the parameter b is 0.008×10?2 or more and 1.5×10?2 or less, the parameter c is 0.012×10?2 or more and 2×10?2 or less, and the parameter d is 0 or more and 0.85 or less.

Abstract: Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.

Abstract: Provided are a fluorescent material and a light emitting device using the fluorescent material. The fluorescent material has a composition represented by the following formula (I): (Ln1-a-b-cTbaCebEuc)3(Al1-dGad)5O12??(I) wherein Ln represents at least one rare earth element selected from the group consisting of Y, Gd, La, Lu, Sc and Sm, and parameters a, b, c and d satisfy 0.25?a<1, 0.008×10?2?b?1.5×10?2, 0.012×10?2?c?2×10?2, and 0?d?0.85.

Abstract: Provided are a light emitting device and an illumination device.

Abstract: This display device includes a display portion, a light-emitting element emitting light to the display portion, a light-emitting element substrate (62) mounted with the light-emitting element, a supporting member (63) supporting the light-emitting element substrate (62), and a diffusing lens (64) provided to cover the light-emitting element, diffusing the light from the light-emitting element. The diffusing lens (64) integrally includes a first engaging portion (64a) configured to mount the diffusing lens (64) on the light-emitting element substrate (62) or the supporting member (63) and a first positioning portion (64b) provided separately from the first engaging portion (64a), configured to position the diffusing lens (64).

Abstract: Provided are a fluorescent material and a light emitting device using the fluorescent material. The fluorescent material has a composition of a rare earth aluminum gallate containing at least one rare earth element Ln selected from the group consisting of Y, Gd, La, Lu, Sc and Sm; at least one Group 13 element selected from Al and Ga; Tb; Ce; and Eu. When a total molar composition ratio of Al and Ga is set to 5, a total molar ratio of Ln, and Tb, Ce and Eu is 3, a molar ratio of Tb is a product of 3 and a parameter a, a molar ratio of Ce is a product of 3 and a parameter b, a molar ratio of Eu is a product of 3 and a parameter c, a molar ratio of Ga is a product of 5 and a parameter d, the parameter a is 0.25 or more and less than 1, the parameter b is 0.008×10?2 or more and 1.5×10?2 or less, the parameter c is 0.012×10?2 or more and 2×10?2 or less, and the parameter d is 0 or more and 0.85 or less.

Abstract: A display device includes a display portion, a light source, and a reflector. The reflector reflects light from the light source. The reflector has a rectangular bottom part, first and second peripheral parts that partially extend from first opposing sides of the bottom part, and third and fourth peripheral parts that extend from second opposing sides of the bottom part that are adjacent to the first opposing sides. The first and second peripheral parts and the third and fourth peripheral parts have overlapping regions that overlap each other.

Abstract: Provided is a light emitting device that includes a light emitting element having a light emission peak wavelength ranging from 380 nm to 490 nm, and a fluorescent material excited by light from the light emitting element and emitting light having at a light emission peak wavelength ranging from 580 nm or more to less than 680 nm. The light emitting device emits light having a ratio R/B of a photon flux density R to a photon flux density B ranging from 2.0 to 4.0 and a ratio R/FR of the photon flux density R to a photon flux density FR ranging from 0.7 to 13.0, the photon flux density R being in a wavelength range of 620 nm or more and less than 700 nm, the photon flux density B being in a wavelength range of 380 nm or more and 490 nm or less, and the photon flux density FR being in a wavelength range of 700 nm or more and 780 nm or less.

Abstract: Provided is a fluorescent material having a composition of rare earth aluminum-gallate, which radiates light in not only a visible light region but also a near-infrared region and has improved light emission intensity in a near-infrared region. The fluorescent material has a composition of rare earth aluminum-gallate, including at least one rare earth element Ln selected from the group consisting of Y, Gd, Sc, Lu, and La; at least one element selected from Al and Ga; Ce; and Nd. When a total molar composition ratio 5 of Al and Ga is used as a basis, a total molar ratio of Ln, Ce, and Nd is 3; a molar ratio of Ce is a product of 3 and a value of a parameter x; a molar ratio of Nd is a product of 3 and a value of a parameter y. The parameter x is in a range of 0.03 or more and 0.015 or less. The parameter y is in a range of 0.002 or more and 0.06 or less.

Abstract: A display device includes a display unit, a light source disposed on a back surface side of the display unit and that irradiates light to the display unit, an optical member disposed between the display unit and the light source, and a support member disposed so that the light irradiated from the light source is incident to a side surface of the support member and so that the light incident to the side surface is transmitted through the support member. The support member supports the optical member from a back surface side of the optical member, and the support member includes an entrance portion comprising an inclined surface that refracts the light incident to the side surface and a light guide portion that guides the light refracted at the inclined surface to an optical member side of the support member.

Abstract: A vehicular headlamp has a light source portion that provides a low beam lighting mode, a high beam lighting mode, and a dimming lighting mode, a light source power supply portion that supplies to the light source portion a lighting current having a current value according to lighting mode, a light distribution mechanism portion that switches light distribution of illumination light by the light source portion according to the lighting mode, and a control portion that, at least in the dimming lighting mode, causes the light source power supply portion to supply lighting current having a second current value lower than a first current value for the low beam lighting mode.