Abstract: An illumination device includes a light source unit; and a light guide plate configured to guide light from the light source unit and to emit the light outward. The light guide plate includes an incidence surface which constitutes one end surface of the light guide plate and on which the light from the light source unit is incident, and emission surfaces which constitute opposite main surfaces of the light guide plate and from which the light incident on the incidence surface is emitted. The emission surfaces include dots formed by micro prism processing. The dots on one of the emission surfaces and the dots on the other emission surface are position-shifted in rotational symmetry with each other.

Abstract: A lighting device which uses laser light as excitation light, the lighting device including: a mirror which has a reflective surface and reflects the laser light; a light emitter which emits light having a wavelength different from a wavelength of the laser light, when illuminated by the laser light, the light emitter being located to receive the laser light reflected by the mirror; a first pivot which causes the light emitter to pivot about a first pivotal axis, the reflective surface of the mirror lying on the first pivotal axis; and a conjunction means which causes the mirror to pivot about the first pivotal axis in conjunction with the light emitter pivoting, a pivotal angle of the mirror being half of a pivotal angle of the light emitter.

Abstract: An illumination device includes a light source unit; and a light guide plate configured to guide light from the light source unit and to emit the light outward. The light guide plate includes an incidence surface which constitutes one end surface of the light guide plate and on which the light from the light source unit is incident, and emission surfaces which constitute opposite main surfaces of the light guide plate and from which the light incident on the incidence surface is emitted. The emission surfaces include dots formed by micro prism processing. The dots on one of the emission surfaces and the dots on the other emission surface are position-shifted in rotational symmetry with each other.

Abstract: A light module 1 includes a planar light emitting device 2, a wiring board 3, and an optical sheet 4. The wiring board 3 has a hole 8 for accommodating the planar light emitting device 2. The optical sheet 4 holds the planar light emitting device 2 and the wiring board 3 such that the planar light emitting device 2 accommodated in the hole 8 of the wiring board 3 and the wiring board 3 are flush with each other on the light emitting surface side of the light module 1. The optical sheet 4 holds the planar light emitting device 2 and the wiring board 3, and prevents dust and moisture from entering the inside the light module 1. This eliminates the necessity for the light module 1 to include a casing, packing, and the like. Therefore, the thickness of the module can be reduced.

Abstract: A light emitting module includes an organic EL light emitting element and a support body supporting the organic EL light emitting element. The support body is attached to the organic EL light emitting element at the side of the non-light emitting surface of the light emitting module to cover one surface of the organic EL light emitting element. The organic EL light emitting element includes power feeding electrodes. The support body includes openings formed in a corresponding relationship with the power feeding electrodes. The power feeding electrodes exposed on the non-light emitting side of the support body through the openings. The support body includes power feeding terminals. The power feeding terminals partially exposed on the non-light emitting side of the support body. The power feeding terminals electrically connected to the power feeding electrodes by electric connection members extending via the non-light emitting side and the openings of the support body.

Abstract: A light emitting module includes an organic EL light emitting element and a support body supporting the organic EL light emitting element. The support body is attached to the organic EL light emitting element at the side of the non-light emitting surface of the light emitting module to cover one surface of the organic EL light emitting element. The organic EL light emitting element includes power feeding electrodes. The support body includes openings formed in a corresponding relationship with the power feeding electrodes. The power feeding electrodes exposed on the non-light emitting side of the support body through the openings. The support body includes power feeding terminals. The power feeding terminals partially exposed on the non-light emitting side of the support body. The power feeding terminals electrically connected to the power feeding electrodes by electric connection members extending via the non-light emitting side and the openings of the support body.

Abstract: A light module 1 includes a planar light emitting device 2, a wiring board 3, and an optical sheet 4. The wiring board 3 has a hole 8 for accommodating the planar light emitting device 2. The optical sheet 4 holds the planar light emitting device 2 and the wiring board 3 such that the planar light emitting device 2 accommodated in the hole 8 of the wiring board 3 and the wiring board 3 are flush with each other on the light emitting surface side of the light module 1. The optical sheet 4 holds the planar light emitting device 2 and the wiring board 3, and prevents dust and moisture from entering the inside the light module 1. This eliminates the necessity for the light module 1 to include a casing, packing, and the like. Therefore, the thickness of the module can be reduced.

Abstract: An electrodeless metal vapor discharge lamp having an airtight arc tube formed with a light transmitting material of metal oxide and containing as sealed therein luminescent substances containing at least one or more of rare earth metallic halide, further includes a promoting substance which renders a halogen cycle occurring adjacent to inner wall surface of the arc tube to be more easily promoted, so as to prevent lamp starting voltage from raising up.

Abstract: An electrodeless discharge lamp includes a discharge gas sealed in a lamp tube. The discharge gas includes a halide of rare earth metal. An auxiliary electrode is disposed on or adjacent to an outer periphery wall of the lamp tube such that the auxiliary electrode is capacitively coupled to an interior space of the lamp tube. A main induction coil is wound around the lamp tube and receives power from a first high frequency power source. The auxiliary electrode receives power from a second high frequency power source. In operation, the electrodeless discharge lamp attains smooth lighting upon starting or restarting.