Mitsubishi Denki Kabushiki Kaisha

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Akihiro Adachi

Yoshihito Hirano

Shinichi Takagi

Masao Imaki

Makoto Sato

Yasunori Nishimura

Kenji Masuda

Kazuhiko Maeda

Kenji Nishiwaki

Michael Shadovitz

Masakatsu Itou

Makoto Satou

Hirotoshi Hada

Yuichi Hasegawa

Yuki Sugiyama

Katsumasa Ando

Yasunori Nisimura

An image display device includes: a display panel displaying an image; a first support member and a second support member that support the display panel in an erected state; a first mounting member interposed by fitting between the display panel and one of the first support member and the second support member; a second mounting member interposed by fitting between the display panel and another of the first support member and the second support member; and a first attachment part, a second attachment part, a third attachment part, and a fourth attachment part provided on a back surface of the display panel and having structures fitted to at least one of the first mounting member and the second mounting member. The first attachment part, the second attachment part, the fourth attachment part, and the third attachment part are provided in this order from one end to another end in a width direction of the back surface of the display panel.

Image display device

Recorder for video cameras

An optical signal emitted from a semiconductor laser is converged by a lens and then received by a single uniaxial birefringent crystal having a C axis that is inclined at an angle other than 90 degrees against a laser optical axis to output an optical signal having a polarized wave component of constant intensity corresponding to the wavelength of the optical signal regardless of temperature changes. The optical signal has an ordinary ray vibrating in a direction perpendicular to a plane including both the C axis and the laser optical axis, and an extraordinary ray vibrating in a direction perpendicular to both the ordinary ray and the laser optical axis. A first main photo detector detects the intensity of a p-polarized component of the optical signal that has passed through a polarizer and a second photo detector directly receives the optical signal converged by the lens.

Wavelength monitoring apparatus

A wavelength filter includes a solid material that is optically transparent and including a pair of planar surfaces substantially parallel to each other; and a supporting member that supports the solid material on a planar surface of the solid material other than the pair of planar surfaces, the supporting member having a rigidity higher than that of the solid material. The solid material is a birefringent material of which an optical axis makes a predetermined angle with respect to a normal to the pair of planar surfaces, and the wavelength filter selects light having a wavelength that is determined by an optical length between the pair of planar surfaces by resonating the light between the pair of planar surfaces.

Wavelength filter and wavelength monitor device

A wavelength monitor comprises a cylindrical lens configured to allow a laser beam emitted from a semiconductor laser to pass therethrough, first and second photodetectors configured to receive the laser beam through the cylindrical lens, and a wavelength filter disposed in an optical path between the semiconductor laser and the first photodetector.

Wavelength monitor and semiconductor laser device

A backward laser beam radiated from a laser diode is received in a photo diode, and an intensity of a forward laser beam radiated from the laser diode is adjusted according to the intensity of the received backward laser beam. The forward laser beam radiated from the laser diode is collimated in a first lens held by a lens holder, and a most portion of the forward laser beam is output through a package window inclined with respect to an optical axis of the laser diode. The remaining portion of the forward laser beam is reflected on the package window as a reflected laser beam and is transmitted through the first lens to be converged in a narrow area placed above the laser diode. A light shielding plate extending in a plane orthogonal to the optical axis is arranged in a wide area including the narrow area and shields the photo diode from the reflected laser beam from. Therefore, the intensity of the forward laser beam radiated from the laser diode is correctly adjusted. Also, the light shielding plate is not soldered to the laser diode but is fixed to lens fixing posts arranged to support the lens holder. Therefore, a driving current can be supplied to the laser diode through a bonding wire without being influenced by the light shielding plate.

Semiconductor laser device for optical communication

Growing community of inventors

Tokyo, Japan

Akihiro Adachi