Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Akihiro Morikawa

Kazuhisa Yamamoto

Kiminori Mizuuchi

Ken'ichi Kasazumi

Tomoya Sugita

Hiroyuki Furuya

Tetsuro Mizushima

Yasuo Kitaoka

Shinichi Kadowaki

Koichi Kusukame

Shin-ichi Kadowaki

Shinsuke Nakazono

Toshifumi Yokoyama

Shinichi Takigawa

Akira Kurozuka

Kenichi Kasazumi

Soichiro Hiraoka

Yoshimasa Fushimi

Takeshi Imamura

Kazuki Komaki

Nobuyuki Horikawa

Toshiaki Horie

Ken′ichi Kasazumi

Yoshiki Kamimura

Wataru Tamura

A capacitor includes a bus bar. The bus bar includes a bus bar body member and a terminal formation member configured to be superposed on and fixed to a terminal formation part of the bus bar body member. In the terminal formation part, a plurality of first connection terminal parts are formed so as to be arranged in one direction, by portions of the terminal formation part being cut and raised. In the terminal formation member, a plurality of second connection terminal parts are formed so as to be arranged in one direction, by portions of the terminal formation member being cut and raised, and second openings are formed in places where the portions have been cut and raised. The first connection terminal parts and the second connection terminal parts are alternately arranged in one direction, by the first connection terminal parts being passed through the second openings.

Capacitor and method for manufacturing capacitor

An optical device includes: an optical element having an optically functional surface which is pivotable; a base supporting the optical element; and a package housing the optical element and the base, in which the package includes: a wall that surrounds the optical element and the base; a window that closes a first opening defined by the wall, and forms an optical path to the optically functional surface, the window being transmissive to light; and a bottom plate that closes a second opening defined by the wall.

Optical device and manufacturing method thereof

An actuator includes a frame, a driver portion having one end connected to an inside of the frame, a movable portion connected to another end of the driver portion, and an electrode provided at the movable portion. The driver portion vibrates the movable portion by being driven by a driving signal. The electrode receives a high-frequency signal higher than that of the driving signal. This actuator is driven at a high speed by a large deflection angle, and can prevent dust from adhering to the movable portion.

Actuator, optical reflecting element, and image forming device using optical reflecting element

A laser light source includes a fundamental laser generator that generates a fundamental laser light, a wavelength conversion element that is made of a ferroelectric crystal with a periodically poled structure and converts the fundamental laser light to a laser light having a different wavelength, a holding member that holds at least a part of an element surface of the wavelength conversion element that crosses a polarization direction of the periodically poled structure, and an insulation layer that is provided between the holding member and the element surface. Electric resistivity of the insulation layer is 1&#xd7;10&#x3a9;&#xb7;cm or higher.

Laser light source, image display apparatus, and processing apparatus

A laser emission device comprises a plurality of laser elements, a plurality of laser driving power supplies, optical elements which uniformize the laser light amount distributions of laser lights, plural light-receiving elements, a measurement unit which measures at least the relations between the operation current values of the laser elements and the output power values of the laser lights with respect to the operation current values, and the control unit operates the laser driving power supplies according to the operation current values and the output power values so as to make the light output powers of the laser elements different from each other.

Laser emission device and image display device using the same

A display for illuminating a liquid crystal display panel with laser light of uniform light quantity distribution, and an illuminator for irradiating with laser light of uniform light quantity distribution. The display includes a liquid crystal display panel (), laser light sources () emitting laser light having wavelengths of green, red, and blue colors, a waveguide plate () arranged at the back side of the liquid crystal display panel () and performing multiple reflection of laser light, and a diffusion plate () arranged at the back side of the waveguide plate (), diffusing laser light propagating in the waveguide plate () and emitting the light toward the liquid crystal display panel ().

Display and illuminator

There is provided a light source device which can miniaturize a two-dimensional image display device as small as possible. The light source device is provided with three coherent light sources (), (), and () corresponding to red, blue, and green; prisms () and () for reflecting lights emitted from the coherent light sources () and (); and a diffraction part () comprising a single volume hologram on which plural gratings are multiply-formed, which gratings diffract the light emitted from the coherent light source (), and the lights that are emitted from the coherent light sources () and () and reflected by the prisms () and () so that these lights propagate in the same optical path.

Light source device, and two-dimensional image display device

A wavelength conversion element is provided with a substrate including a nonlinear optical single crystal having a periodically poled structure, wherein a visible light transmittance of the substrate is 85% or higher when ultraviolet light is irradiated to the substrate. Further, a laser light having an average output of 1 W or more is outputted by shortening a wavelength of inputted laser light having a wavelength of 640 nm to 2000 nm. By improving visible light transmission characteristics when the ultraviolet light is irradiated in this way, a breakdown of crystal can be prevented and a stabilization of output characteristics at high output can be realized. As a result, an absorption of green light induced by ultraviolet light can also be suppressed and a saturation of output and the breakdown of crystal can be avoided.

Wavelength conversion element, laser light source, two-dimensional image display and laser processing system

A short wavelength light source includes a wavelength conversion element having an incident surface, on which a fundamental wave is incident, and an output surface, from which a harmonic wave is outputted. The wavelength conversion element converts the fundamental wave into the harmonic wave. In addition, the wavelength conversion element includes a holder holding the wavelength conversion element, wherein the wavelength conversion element has a specific region on a light output side, which is arranged so as to suppress variations in phase matching condition between the fundamental wave and the harmonic wave resulting from heat generated by absorbing the harmonic wave during a wavelength conversion.

Short wavelength light source and laser image forming apparatus

The laser picture formation device includes a two-dimensional modulation element performing video image modulation as well as four or more laser light sources having different center wavelengths. The video images which have no speckle noises at the wavelength region that has high visibility, which are realized by simultaneously emitting the laser lights of green (G) and yellowish green (Y) which have particularly high visibility, and video images which are vivid as cannot be represented by the conventional display, and which can be realized by controlling the laser lights of respective colors independently, can be displayed. Particularly, by modulating the two-dimensional modulation element and the laser light output with synchronized with each other, various video displays are enabled.

Laser picture formation device and color picture formation method

A laser image display device includes: a first laser light source capable of outputting a laser light having a first wavelength; a second laser light source capable of outputting a laser light having a second wavelength; and a color output conversion controller capable of individually controlling power of the first and the second laser light source displaying the pixels constituting an image according to an input signal. When an input signal is contained at the end point of the color reproducible region and the laser light having the first wavelength is driven substantially by a first maximum power while the laser light having the second wavelength is driven substantially by a second minimum power, the color output conversion controller displays in pixels, a color contained in the color reproducible region excluding the end point in the pixels by using the laser light of the first wavelength at a first power below the first maximum power and the laser light of the second wavelength at a second power above the second minimum power.

Laser image display device and color image display method utilizing control of the power of plural laser beams to display a pixel

The light sources according to the present invention include a laser oscillator including a semiconductor laser, a drive circuit for the semiconductor laser, an ACC circuit, an APC circuit, and a switch, and a starting drive current storage device, and is controlled in such a manner that the driving current at the start of the laser driving be always constant, and after the start of the lighting, it is switched to the APC operation to carry out the power control of the laser light output.

Light source, light source device, laser image forming device and integrated circuit

An object of the invention is to increase the beam diameter of a laser beam, and perform high-output wavelength conversion without causing crystal damage. A laser wavelength conversion device includes a laser wavelength conversion element for allowing incidence of a laser beam as a fundamental wave to convert a part of the fundamental wave laser beam into a wavelength-converted laser beam having a wavelength different from a wavelength of the fundamental wave laser beam. The laser wavelength conversion element includes a non-linear optical crystal having periodically polarization reversed portions. The polarization reversed portions are formed in such a manner that a region where a wavelength conversion efficiency is substantially uniform extends in a polarization direction of the non-linear optical crystal. The incident laser beam is converted into the wavelength-converted laser beam with the wavelength conversion efficiency.

Laser wavelength conversion device, method for forming polarization reversed structure, and image display device

A surface emitting laser includes an active layer disposed on a semiconductor substrate, and a pair of upper and lower electrodes for injecting carriers into the active layer. The plane surface of the lower electrode is shaped into a star so that injection of current into the active layer from the lower electrode is carried out with a high density at the center of the lower electrode and with a low density at its periphery part. In the surface emitting laser, the density distribution of the carriers injected into the active layer corresponds to the power distribution of light inside the active layer. Thereby, hole burning due to an increase in the current density in the region of the active layer corresponding to the peripheral part of the electrode is avoided, and the transverse mode stability during high output operation is significantly enhanced to improve high-output characteristic.

Surface-emitting laser and laser projector

In a display unit which makes coherent light perform scanning on a screen to display an image, it is necessary to rotate a polygon mirror at ultrahigh speed for display of a high resolution image such as HDTV, and therefore, a high-performance polygon mirror must be employed, and further, noise and power consumption during rotation of the polygon mirror cause problems. Mirrors for multiple reflection () and () are inserted in a coherent light scanning optical system, whereby plural scanning lines can be obtained while one plane of the polygon mirror () scans one line of coherent light, leading to reduction in the rpm of the polygon mirror.

Growing community of inventors

Osaka, Japan

Akihiro Morikawa