Sharp Kabushiki Kaisha Corporation

Yuji Kozuma

Junichi Somei

Toshio Hata

Makoto Agatani

Tatsuya Morioka

Shinya Ishizaki

Tomokazu Nada

Makoto Matsuda

Toyonori Uemura

Motoki Takase

Kenji Hatazawa

Shinji Osaki

Hitoshi Tanaka

Masako Horiyama

An illumination device with a toning function in which possibility of moisture and dust intruding into the case is reduced with a simple mechanism is realized. The illumination device includes a light emitting element light source () mounted on a substrate inside the case unit (), an external gear-shaped fluorescent-substance plate () having a configuration in which a light emitting color of an applied fluorescent substance differs according to position and being arranged above the light emitting element light source () inside the case unit (), and an internal gear-shaped adjustment ring () arranged so as to mesh with the external teeth of the fluorescent-substance plate (), wherein the adjustment ring () is arranged to be positioned on the outer periphery of the main body under a lens dome (), and when the adjustment ring () is rotated, a relative positional relationship between a color distribution applied on the fluorescent-substance plate () and the light emitting element light source () is changed.

Illumination device

In an LED light bulb, an LED module and a lens are disposed on a fixing stage provided to a housing. The lens has a concave portion at its top end. The concave portion forms a reflecting surface which reflects part of outgoing light from the LED module to (i) first directions perpendicular to a front emission direction of the outgoing light or (ii) second directions leaning to a cap beyond the first directions. Due to diffusion effect of an optical cover, part of the light reflected by the lens is emitted backward (toward the cap). This realizes an LED light bulb that distributes light over an entire circumference and has high output as well as high light output ratio.

LED light bulb

A multi-feed horn includes a first feed horn, a second feed horn and a third feed horn which are connected to a first waveguide, a second waveguide and a third waveguide, respectively. The first feed horn is provided with a first proximal end opening and a first tip opening which are rectangular in shape, the second feed horn is provided with a second proximal end opening and a second tip opening which are rectangular in shape, and the third feed horn is provided with a third proximal end opening and a third tip opening which are rectangular in shape. Consequently, a multi-feed horn, a low noise block downconverter and an antenna apparatus which allow a further improvement in the reception characteristic and in the manufacturing accuracy can be provided.

Multi-feed horn, low noise block downconverter provided with the same and antenna apparatus

Growing community of inventors

Osaka, Japan

Yuji Kozuma