Enplas Corporation

Hiroshi Takatori

Masao Yamaguchi

Noriyuki Kawahara

Akinobu Seki

Kyouhei Yamada

Takuro Momoi

Shimpei Morioka

Masato Nakamura

Yuki Fujii

Yasuyuki Fukuda

Takayoshi Suganuma

Toshihiko Mochida

Masayo Takizawa

Yu Kamijo

Ryo Nonaka

Yuichi Suzuki

Takao Miyoshi

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.

Communication module and electromagnetic flux controlling member used for the same

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.

Surface light source device, display device and light flux controlling member

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.

Light flux controlling member, light emitting device, surface light source device, display device, and method for improving luminance unevenness of light emitting device

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.

Light flux controlling member, light-emitting device, surface light source device and display device

This luminous flux control member has: a plane of incidence having a first incidence plane and a second incidence plane; an emission plane; and a second concavity. The luminous flux control member satisfies the expression h&#x3c;h+d&#xd7;cot(&#x3b8;), where his the space between the apex of the second concavity and a second imaginary line orthogonal to the center axis and that passes through the aperture edge portion, his the space between the second imaginary line and the incidence position of light on the second incidence plane, d is the distance between the incidence position and the apex in the direction orthogonal to the center axis, &#x3b8;is the angle of refraction of light in the incidence position, and &#x3b8;is the angle of the tangent line at the incidence position in relation to the second imaginary line.

Luminous flux control member, light-emitting device, planar light source device, and display device

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.

Light emitting device, surface light source device and display apparatus

This luminous flux control member has: an incidence surface through which light emitted from a light-emitting element enters; an emission surface through which the light entering from the incidence surface is emitted to the outside; and multiple ridges that are formed on the back side so as to surround the central axis (CA) and that have a substantially triangular cross-sectional shape. Each of the multiple ridges has a first reflecting surface, a second reflecting surface, and a ridge line which is the line of intersection of the first reflecting surface and the second reflecting surface. An imaginary line containing the ridge lines intersects the central axis (CA) at a position closer to the front side than the ridge lines.

Luminous flux control member, light-emitting device, surface light source device, and display device

A light flux controlling member () of the present invention has: an incident part () that receives light emitted from a light emitting element (); a total reflection surface () that reflects a part of light incident from the incident part () toward a front side; a first emission part () that emits incident light received directly from the incident part () and light reflected at the total reflection surface () toward the outside; and a second emission part () that is protruded to the outside from the total reflection surface () and emits another part of light incident from the emission part () toward the outside.

Luminous flux control member, light emitting apparatus, illuminating apparatus, and display apparatus

Lens for light emitting diode

A surface light source device includes substrate, a plurality of light emitting devices disposed at constant intervals on substrate, and light diffusion plate disposed substantially parallel to substrate over the plurality of light emitting devices. Light emitting device includes light emitting element and light flux controlling member. A luminous intensity of light from light emitting device is gradually increased as an angle relative to optical axis becomes larger in an angular range from a direction along optical axis of light emitting device to a direction of emission of light with the highest luminous intensity from light emitting device. An angle of the light with the highest luminous intensity from the light emitting device is more than 78.7&#xb0; relative to the optical axis. Surface light source device satisfies two Equations of H/P&#x2266;0.2, and I/I&#x3e;6.

Surface light source device and display apparatus

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.

Lighting apparatus

In a surface light source device (), a positive reflective region () of a reflective member () that is disposed on the bottom surface () of a housing () reflects light output by a light emitting device () toward a direction away from the light emitting device (). As a result, the brightness of the light in the proximity of the light emitting device () of the surface shaped illuminating light output by a light emitting surface member () can be suppressed, and the brightness of light of a central part (position furthest away from the light emitting device ()) of the surface shaped illuminating light output by the light emitting surface member () can be increased.

Surface light source device and display device

A surface light source device () includes substrate (), a plurality of light emitting devices () disposed at constant intervals on substrate (), and light diffusion plate () disposed substantially parallel to substrate () over the plurality of light emitting devices (). Light emitting device () includes light emitting element () and light flux controlling member (). A luminous intensity of light from light emitting device () 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 () to a direction of emission of light with the highest luminous intensity from light emitting device (). Surface light source device () satisfies three Equations of H/P&#x2266;0.2, L/P&#x3e;1, and I/I&#x3e;6.

Growing community of inventors

Saitama, Japan

Hiroshi Takatori