Abstract: A light emitting apparatus comprises at least two light emitting elements with different chromaticities; and a light emitting element controller that controls light emitted from the light emitting apparatus so as to be a desired chromaticity. The light emitting element controller controls the light emitting elements based on a predetermined function of light emitting element temperature variation. Accordingly, it is possible to provide a light emitting apparatus that, even if the temperature varies, has a stable desired chromaticity without chromaticity variation. In addition, since control is performed based on a property function of wavelength fluctuation due to light emitting element temperature variation, it is possible to provide more reliable reproduction characteristics, and a desired chromaticity.

Abstract: A surface light emitting apparatus that can be made smaller in depth and lighter in weight and has high uniformity in luminance over the light emitting surface is disclosed. The surface light emitting apparatus of the present invention comprising a substrate, a plurality of light sources on the substrate, and a plurality of reflectors on the substrate, each of the reflectors having a first surface that covers the light sources and a second surface that reflects or scatters the irradiated light, wherein the reflectors are disposed so that the second surface is irradiated with a light emitted by the light source by the first surface of the adjacent reflector, and the light reflected or scattered by the second surface is emitted to outside.

Abstract: A light emitting apparatus comprises at least two light emitting elements with different chromaticities; and a light emitting element controller that controls light emitted from the light emitting apparatus so as to be a desired chromaticity. The light emitting element controller controls the light emitting elements based on a predetermined function of light emitting element temperature variation. Accordingly, it is possible to provide a light emitting apparatus that, even if the temperature varies, has a stable desired chromaticity without chromaticity variation. In addition, since control is performed based on a property function of wavelength fluctuation due to light emitting element temperature variation, it is possible to provide more reliable reproduction characteristics, and a desired chromaticity.

Abstract: A surface light emitting apparatus that can be made smaller in depth and lighter in weight and has high uniformity in luminance over the light emitting surface is disclosed. The surface light emitting apparatus of the present invention comprising a substrate, a plurality of light sources on the substrate, and a plurality of reflectors on the substrate, each of the reflectors having a first surface that covers the light sources and a second surface that reflects or scatters the irradiated light, wherein the reflectors are disposed so that the second surface is irradiated with a light emitted by the light source by the first surface of the adjacent reflector, and the light reflected or scattered by the second surface is emitted to outside.

Abstract: A lighting apparatus includes a plurality of light-emitting diodes emitting red, blue, and green light. The plurality of light-emitting diodes emit light beams and are arranged so as to emit the light beams toward a focusing point. A control circuit is provided for controlling the intensity of light emission of each of the light-emitting diodes emitting red, blue, and green light. A concave reflector is provided for reflecting and radiating the light focused from the light-emitting diodes to the focusing point so that the light is further focused or scattered. The apparatus also has a position-changing mechanism for changing a relative position of the concave reflector relative to the focusing point of the light-emitting diodes.

Abstract: A lighting apparatus comprises a plurality of light-emitting diodes emitting red, blue, and green light, the plurality of light-emitting diodes emitting light beams and being arranged so as to emit the light beams toward a focusing point; a control circuit for controlling the intensity of light emission of each of the light-emitting diodes emitting red, blue, and green light; a concave reflector reflecting and radiating the light focused from the light-emitting diodes to the focusing point so that the light is further focused or scattered; and a position-changing mechanism for changing a relative position of the concave reflector relative to the focusing point of the light-emitting diodes.