Sharp Kabushiki Kaisha Corporation

Enplas Corporation

Fumio Kokubo

Akira Takushima

Masao Yamaguchi

Keiji Sakai

Tetsuo Ueyama

Fumiaki Yamada

Masaki Eguchi

Renzaburo Miki

Yutaka Takashige

Shota Inoue

Eiji Kurimoto

Ryoji Ishimura

Ryo Inoshiri

Tohru Hanaoka

Shigenori Ohtani

An object of the present invention is to obtain a display device having excellent display quality by appropriately modifying the chromaticity of images. In this display device, a correction processing part (CPU) determines a first chromaticity change amount stored in memory () on the basis of a first cumulative usage amount, which is the cumulative usage amount of an LED () up to a present time, the cumulative value having been measured by a counter (), and the correction processing part also determines a second chromaticity change amount stored in the memory () on the basis of a second cumulative usage amount, which is the cumulative usage amount of the LED () up to a time when the chromaticity of a pixel is adjusted by a chromaticity adjusting part (CPU), the cumulative value having been measured by the counter (). Then, by subtracting the second chromaticity change amount from the first chromaticity change amount, the correction processing part obtains the value to which the chromaticity is to be modified, and modifies an image signal on the basis of the value to which the chromaticity is to be modified.

Display device and television receiver

Substantially cylindrical supporting units are formed at both sides of a lens. The supporting units are to adjust the separation distance between the lens and the surface of a substrate depending on the height dimension of a light emitting diode mounted on the substrate from the substrate face when the lens body is fixed to the substrate. A cylindrical convex part is formed at a part of the tip face of the supporting unit in a concentric fashion relative to the supporting unit, and a cylindrical positioning unit is formed at a part of the tip face of the convex part in a concentric fashion. The positioning unit functions as a member for positioning when the substrate and the lens body are fixed to each other.

Lens body, light source unit and lighting system

A light-emitting device () includes: a light-emitting element (); and a light flux controlling member () for controlling light emitted from the light-emitting element (), the light flux controlling member () has (i) a light-incoming surface () which the light emitted from the light-emitting element () enters and (ii) a light-outgoing surface (), and the following equation (1) is satisfied where r is a length, from a light axis Z of the light-emitting device (), of a plane that is provided at a certain distance from the light flux controlling member () in a direction parallel to the light axis Z so as to be perpendicular to the light axis Z, &#x3c6;is an angle between the light emitted from the light-emitting element () and the light axis, P(&#x3c6;) is a light distribution property of the light-emitting element (). This provides a light-emitting device that scatters light without generating uneven brightness on a liquid crystal display panel, reduces a reflectance caused by the Fresnel's reflection, and has an improved scattering ability.

Light emitting device and lighting device having the same

A light-emitting device () is arranged such that (x) Rmonotonically decreasing as &#x3b1;increases, at least in a range of &#x3b1;&#x3c;&#x3c0;/3, where an intersection of a light axis Z and an emission surface of a light-emitting element () is a reference point; &#x3b1;is an angle between the light axis Z and a straight line that passes through the reference point and an arbitrary point on a light-incoming surface (), and Ris a distance between the reference point and the arbitrary point on the light-incoming surface (); (y) Rmonotonically increasing as &#x3b1;increases, at least in a range of &#x3b1;&#x3c;&#x3c0;/3, where &#x3b1;is an angle between the light axis Z and a straight line that passes through the reference point and an arbitrary point on a light-outgoing surface (), and Ris a distance between the reference point and the arbitrary point on the light-outgoing surface (); and (z) Ascatters light without generating uneven brightness on a liquid crystal display panel and has higher scattering ability that is obtained by decreasing a reflectance caused by the Fresnel reflection, where n is a refraction index of a material forming a light flux controlling member (), and A=&#x394;R/(R&#x394;&#x3b1;), where &#x394;Ris an increment of Rand &#x394;&#x3b1;is an increment of &#x3b1;.

The object of the invention is to accurately detect the amount of tilt in the light reflector to the optical axis of an output light with a simple configuration. A tilt sensing apparatus includes a light reflector, a light source, a condensing unit for condensing an output light from the light source onto the light reflector, and a light sensing unit for sensing the reflected light from the light reflector. An optical device provided in the condensing unit for varying the light quantity of the transmitting light has first and second optical device strips that are formed at the positions of axial symmetry about the optical axis and have a predetermined shift in the direction of a straight line of connecting the axis of the light reflector to the condensed position where the light emitted from the light source is condensed onto the light reflector by the condensing unit.

Apparatus for detecting the tilt of a light reflector relative to the optical axis of input light

It is an object of the invention to provide a liquid crystal display apparatus capable of reducing the difference in temperature rise between liquid crystal panels and polarizers for respective colors, suppressing a temperature rise, and reducing noise caused by a fan. The liquid crystal display apparatus includes a hermetic container, and liquid crystal display sections for respective colors, namely, red, green and blue, each including a liquid crystal panel and polarizers. A cooling fan for blue sends cooling air to the liquid crystal display section for blue. A cooling fan for green and red sends cooling air to the liquid crystal display sections for green and red.

Liquid crystal display apparatus with a first blower for blue section and a second blower for red and green sections

A compact vortex-stream gas-liquid separator, and a gas-liquid separation system employing it, offers high gas-liquid separation performance with minimal pressure loss. A substantially cylindrical casing ( ) is arranged with its axis lying horizontally. The casing has a fluid passage ( ) formed therein, has a fluid inlet ( ) provided at one end, and has a gas outlet ( ) and a liquid outlet ( ) provided at the other end so as to constitute as a whole a vortex-stream gas-liquid separator ( ). The fluid inlet is arranged along a line tangential to the casing so that the gas-liquid two-phase fluid passes through the fluid passage in the form of a vortex stream. The gas outlet is arranged so as to be coaxial with the casing. This vortex-stream gas-liquid separator and the gas-liquid separation system ( ) employing it are used in a clothes dryer or air conditioner to remove water droplets from air.

Vortex-stream gas-liquid separator and gas-liquid separation system

An active controller suppressing an incoming acoustic wave by active control includes a signal processing unit filtering, an input signal corresponding to the incoming acoustic wave to generate an output signal, an error detecting portion detecting an error between the output signal and a desired response value, and an adapting portion adjusting a filtering characteristic of the signal processing portion according to the input signal, the output signal, and an error signal such that the error is minimized. The signal processing portion includes a non-recursive all zero digital filter filtering an input signal, and a lattice-type multi-stage all pole digital filter further filtering an output signal of the non-recursive all zero digital filter. The adapting portion updates a filter coefficient of the signal processing portion adaptively while clipping an absolute value exceeding one of a filter coefficient of the lattice-type multi-stage all pole digital filter.

Growing community of inventors

Nara, Japan

Fumio Kokubo