Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Hideki Wada

Hirofumi Yamashita

Kazuyuki Yamae

Masanobu Murakami

Toshihiro Terada

Kazuhiro Matsuo

Taizou Ono

Yoshio Manabe

Takashi Maniwa

Tomoya Iwahashi

Ryosuke Shigitani

Tomokazu Matsuura

Nozomu Hashimoto

Hironori Akiyama

Shogo Toda

Hiroyuki Arata

Yuko Habuta

Katsumi Itagaki

Kotone Mori

Shingo Tsutsumi

Mitsuharu Kawasaki

A light-emitting device includes: a light guide that includes (i) a light-transmissive member that is light-transmissive at least in a visible light region and (ii) a light control layer that is disposed on at least a part of a surface of the light-transmissive member; and a light source that emits light toward at least one end surface of the light-transmissive member. The light control layer has reflected-wavelength selectivity that makes a wavelength of reflected light dependent on an incident angle of incident light.

Light-emitting device, lighting system, and optical communication system

A color vision correction filter includes a least one type of dye material and the lowest value of transmittance of the color vision correction filter in a wavelength band ranging from 440 nm to 600 nm, inclusive, is in the range of plus or minus 50 nm of 535 nm.

Color vision correction filter and optical component

A fluorescent lamp including a glass bulb that is in a shape of a tube. External electrodes are formed as conductive layers each of which covers an outer surface of the glass bulb at an end thereof. Metal members in a shape of a cap are respectively connected to the external electrodes by covering at least part of the external electrodes. The metal members are formed such that rims of the metal members recede from a center of the glass bulb in the tube axis direction a distance L than rims of the external electrodes.

Fluorescent lamp, backlight unit, and liquid crystal television for suppressing corona discharge

A backlight unit has an external electrode fluorescent lamp in an housing. The external electrode fluorescent lamp includes a glass bulb having a discharge space inside, and electrodes around both ends of the glass bulb. A protective layer and a phosphor layer are formed on an internal surface of the glass bulb in this order. The glass bulb is made of soda glass, and sodium oxide precipitated from this soda glass appears on part of the internal surface of the glass bulb where the protective layer is not formed, so as to be exposed to the discharge space.

Fluorescent lamp for use in a backlight unit and liquid crystal display device

A fluorescent lamp including a glass bulb, a protection layer formed on an inner surface of the glass bulb, and a phosphor layer formed on a surface of the protection layer. The surface of the protection layer that is in contact with the phosphor layer has cracks. The bulk density of the metal oxide particles in the protection layeris 80% or more. The surface of the protection layerhas 20 to 200 cracks per millimeter in a tube axis direction. The average particle diameter of the metal oxide particles is in the range from 0.01 &#x3bc;m to 1 &#x3bc;m. The thickness of the protection layer is in the range from 0.5 &#x3bc;m to 5 &#x3bc;m.

Fluorescent lamp, backlight apparatus, and manufacturing method of fluorescent lamp

Growing community of inventors

Takatsuki, Japan

Hideki Wada