Panasonic Intellectual Property Management Co., Ltd.

Manabu Okuno

Takaaki Tanaka

Takashi Ikeda

Yoshimasa Fushimi

Michihiro Okuda

Manabu Chikayama

Naoko Yamashita

Yoshiki Tanaka

Yohei Katsumata

A light source apparatus includes a plurality of light emitting apparatuses. Each of the light emitting apparatuses includes a plurality of light emitting devices each of which has a light emitting area and a non-light emitting area on an emission surface thereof that emits light. At least two light emitting apparatuses of the light emitting apparatuses constitute a light emitting apparatus group disposed such that the emission surfaces of the respective light emitting apparatuses are parallel to each other with a predetermined distance, and that a distance between light emitting areas of the respective light emitting apparatuses when viewed along a direction perpendicular to the emission surfaces of the at least two of the light emitting apparatuses is shorter than a distance between the light emitting areas of the respective light emitting apparatuses when the emission surfaces of the respective light emitting apparatuses are on the same plane.

Light source apparatus and projection-type image display apparatus

A lighting device of the present disclosure includes a light source device and a reflective component. The reflective component reflects an illumination light incident from the light source device off the reflecting surface of the reflective component at incident angle &#x3b1;, and emits the illumination light reflected toward a display element at exit angle &#x3b2;. The reflecting surface of the reflective component is rotated with respect to two axes orthogonal to each other. 20 degrees&#x2264;|&#x3b1;&#x2212;&#x3b2;|&#x2264;60 degrees is satisfied. Where, each of the incident angle &#x3b1; and the exit angle &#x3b2; is angle of the illumination light to a horizontal direction of the display element when the illumination light is incident on a front surface of the display element.

Lighting device and projection display apparatus

The display device includes a light source unit that emits light, a first display element, and a second display element. The display device further includes a light separating and synthesizing member that separates the light emitted from the light source unit into first light and second light having different wavelength regions, emits the first light toward the first display element, emits the second light toward the second display element, and synthesizes the first light that has been reflected and modulated by the first display element and the second light that has been reflected and modulated by the second display element. The display device further includes a light absorbing member that covers a part of the first display element. The light absorbing member absorbs a part of the modulated second light reflected by the second display element and directed toward the first display element.

Display device and projection device

A phosphor wheel of exemplary embodiment in the present disclosure includes a substrate, a phosphor region circularly provided on one surface of the substrate, a light processing region circularly provided on an other surface of the substrate and entered by incident light, a light processing body provided in the light processing region, a light-transmissive region provided in the substrate, and a drive device rotating the substrate.

Phosphor wheel including a light absorption processing body provided in a light processing region, light source device including the phosphor wheel, and projection display apparatus including the phosphor wheel

A light source deviceincludes light source unitsto, lenses, and, and mirrorsand. Light source unitsand/or light source unitsare placed such that the light from unitstoeither enters lensat a position deviated from the optical axis of lensor enters lensat a position deviated from the optical axis of lens

Light source device and projection display apparatus

A first light source device includes: a solid-state light source; a condenser element that collects light from the solid-state light source; a retardation plate that converts linearly polarized light into circularly polarized light; and a reflection plate, wherein the retardation plate is disposed at a point of incidence of collected light and divergent light between the condenser element and the reflection plate. A second light source device includes: a solid-state light source; a retardation plate that changes a polarization direction of light from the solid-state light source to make a ratio of polarization and s-polarization components of the light constant under control; and a dichroic mirror that separates the light from the retardation according to the polarization direction, wherein the retardation plate is disposed at a point of incidence of one of collected light and divergent light between the solid-state light source and the dichroic mirror.

Light source device and projection display apparatus including plural light sources, and a lens condensing light from the plural light sources into one spot

The light source device and the projection display apparatus include a solid-state light source unit, a dichroic mirror, a fluorescent plate, a first wave plate, and a multi-reflection mirror. The solid-state light source unit emits first and second linearly polarized light rays at a predetermined ratio, the first and the second linearly polarized light rays being orthogonal to each other. The dichroic mirror separates the first and the second linearly polarized light rays, and combines blue light with yellow light. The fluorescent plate emits the yellow light to the dichroic mirror when the fluorescent plate is excited by the first linearly polarized light ray separated by the dichroic mirror. The first wave plate converts the second linearly polarized light ray separated by the dichroic mirror, into circularly polarized light. The multi-reflection mirror reflects the circularly polarized light to the dichroic mirror as the blue light.

A projection display apparatus of the present disclosure includes a solid state light source discharging blue light in a first wavelength range; a wheel having a transmission part transmitting blue light and a first light-emitting body emitting light in response to irradiation with blue light; a second light-emitting body emitting light in a second wavelength range closer to the longer wavelengths than the first wavelength range is and adjacent to the first wavelength range, in response to irradiation with blue light that has passed through the transmission part; a light uniformizing element uniformizing the blue light and the light emitted from the first and second light-emitting body; a light modulation element modulating the light uniformized by the light uniformizing element; and projection unit projecting the light modulated by the light modulation element.

Projection display apparatus

The cooling device of the present disclosure has a thermally conductive base that is thermally connected to a heat-generating section, a heat pipe section embedded in the base, and a fin section that has a plurality of fins and is connected to the base in a way that the fin section covers the heat pipe section.

Cooling device and projection image display device

A lighting device includes plural light sources, an optical coupling device including plural reflection members each having a reflection surface, the optical coupling device reflecting plural light beams emitted in plural directions from the plural light sources at the reflection surfaces of plural reflection members and coupling the plural light beams to generate a coupled light beam in an identical direction, and a homogenization device that homogenizes the coupled light beam from the optical coupling device. In at least one of the plural reflection members, a cutout portion is formed to transmit an incident light beam on the reflection surface of the other reflection member such that the incident light beam is not blocked by a part of a region of the at least one reflection member on the way to the reflection surface of the other reflection member.

Growing community of inventors

Osaka, Japan

Manabu Okuno