Abstract:
A communication module including a primary radiator for transmitting an electromagnetic flux, and an electromagnetic flux controlling member for controlling a travelling direction of the electromagnetic flux sent from the primary radiator. The electromagnetic flux controlling member includes an incidence surface and an emission surface. The incidence surface and the emission surface are configured such that the electromagnetic flux emitted is expanded than the electromagnetic flux transmitted from a focal position of a reference lens optimized to collimate the electromagnetic flux from the primary radiator and emitted after incidence on the reference lens on a basis of an emission angle of the electromagnetic flux emitted from the primary radiator, a dielectric constant of the electromagnetic flux controlling member, and an arbitrarily set focal length of the electromagnetic flux controlling member.
Abstract:
A surface light source device includes: a plurality of light-emitting devices, each of the plurality of light-emitting devices including a light-emitting element disposed on a substrate and configured to emit light with a wavelength of 380 to 485 nm and a light flux controlling member disposed over the light-emitting element and configured to control a distribution of light emitted from the light-emitting element; and an optical sheet including a wavelength conversion sheet disposed over the light flux controlling member and configured to convert a wavelength of incident light. The light flux controlling member is formed with a resin composition or a glass composition containing a scattering member, and makes scattering of light with a wavelength longer than the wavelength of 380 to 485 nm large.
Abstract:
A surface light source device includes a light-emitting device; and a light diffusion plate disposed over the light-emitting device. The light-emitting device includes a substrate, a plurality of light-emitting elements disposed on the substrate, and a sealing material disposed on the substrate and configured to seal the plurality of light-emitting elements, the sealing material being made of silicone or epoxy resin. The sealing material includes particles, the particles being optically transparent.
Abstract:
A light emitting device includes a substrate in which a specular reflection area that specularly reflects reaching light is disposed on one surface, a light emitting element disposed on the substrate to emit light at least from a side surface, and a light flux controlling member disposed over the light emitting element to control a distribution of light to be emitted from the light emitting element. The light flux controlling member includes a rear surface disposed closer to the substrate, an incidence surface being an inner surface of a recess opening toward the rear surface and receiving light emitted from the light emitting element, and an emission surface emitting at least a part of the light incident through the incidence surface toward an outside. An outer edge portion of the specular reflection area is positioned outside an opening edge portion of the recess.
Abstract:
A surface light source device (100) includes substrate (120), a plurality of light emitting devices (130) disposed at constant intervals on substrate (120), and light diffusion plate (160) disposed substantially parallel to substrate (120) over the plurality of light emitting devices (130). Light emitting device (130) includes light emitting element (140) and light flux controlling member (150). A luminous intensity of light from light emitting device (130) is gradually increased as an angle relative to optical axis (LA) becomes larger in an angular range from a direction along optical axis (LA) of light emitting device (130) to a direction of emission of light with the highest luminous intensity from light emitting device (130). Surface light source device (100) satisfies three Equations of H/P≦0.2, L/P>1, and I1/2/I0>6.
Abstract:
A surface light source device includes a plurality of light emitting devices each including at least one light emitting element and a light flux controlling member for controlling a distribution of light emitted from the at least one light emitting element; and an optical sheet including a light diffusion member which includes optically transparent particles and which is for transmitting light emitted from the plurality of light emitting devices while diffusing the light. When the number average particle diameter of the particles is A (μm) and the proportion of particles in the light diffusion member is B (wt %), the surface light source device satisfies the formula 0.4≤A≤10 and the formula 0.4647A+0.2169≤B≤2.3119A+2.5103.
Abstract:
A light flux controlling member includes n incidence units for allowing incidence of light emitted from n light emitting elements, respectively; an emission unit disposed between the n incidence units and allowing emission of the light incident on the n incidence units while guiding the light; and a plurality of legs. Each incidence unit includes an incidence surface and a reflection surface reflecting, in a direction along the substrate, the light incident on the incidence surface. The emission unit includes a first emission surface emitting a part of the light from the incidence unit, and a second emission surface disposed so as to face away from the first emission surface and emitting another part of the light from the incidence unit. Each leg is disposed at a position satisfying a predetermined condition.
Abstract:
A lighting apparatus includes a light emitting element, a light flux controlling member which controls light distribution so as to narrow the light emitted from the light emitting element, a substantially tubular prism member which is formed of an optically-transparent material, has a plurality of prism rows, and extends in the optical axis direction, and a substantially tubular diffusion member having optical transparency and a light diffusion property. The plurality of prism rows is disposed parallel to the optical axis on the outer peripheral surface of the prism member.
Abstract:
A light flux controlling member includes an emission surface, a first incidence surface that is an inner surface of a concave portion, a second incidence surface that is disposed outside an opening rim portion of the concave portion, and a rear surface. A plurality of annular grooves is formed in the second incidence surface. Each annular groove forms an intersection line with an adjacent annular groove. When a virtual plane that passes through the outer rim portion of the second incidence surface and is orthogonal to the central axis is assumed as a reference plane, the plurality of annular grooves is disposed so that the intersection line become close to the virtual plane with distance from the central axis. The shape of a cross section of the annular groove including the central axis is an arc of which the center of curvature is located outside the light flux controlling member.
Abstract:
A light flux controlling member includes a first optical surface, a second optical surface, a third optical surface, and a fourth optical surface. A part of light emitted from the light-emitting element and entered from the first optical surface is emitted from the second optical surface to outside of the light flux controlling member after being sequentially internally reflected by the second optical surface, the third optical surface and the fourth optical surface. A part of light emitted from the light-emitting element that is incident on the first optical surface is Fresnel-reflected, reflected by a surface of the substrate toward the first optical surface to enter the light flux controlling member from the first optical surface, and then emitted from the second optical surface to the outside of the light flux controlling member.