Hitachi, Ltd.

Tomoegawa Paper Co., Inc.

Taisuke Hirota

Churyo Kodama

Hiroshi Ohno

Fumio Kawamura

Katsumi Miyazaki

Yasuo Kobayashi

Atsushi Suzuki

Akinori Sei

Etsuo Urataki

Masami Yanagisawa

Yasuo Hirasawa

Takao Higashi

Naoki Hagiwara

Ichirou Torii

Kazuhiko Kubo

Masanori Tsuda

Katsuyuki Hosoya

A lighting lamp is disclosed, comprising a lamp having laminated on the surface of a bulb thereof a display sheet, said display sheet comprising a support having thereon an active layer containing a pigment which is faded by the action of an active light and an active light-adjusting layer.

Lighting lamp

Fluorescent lamp

A fluorescent lamp with reflective layer of the present invention has a first phosphor layer and a second phosphor layer which are partially laminated. The first phosphor layer is formed on the whole inner surface of the glass tube, and the second phosphor layer is formed on the first phosphor layer at a predetermined angle of reflection along the axial direction of the glass tube. The laminated portions of the first and second phosphor layers substantially form a reflective layer, and the other portions form a transmitting layer.

Fluorescent lamp having reflective layer and a method for fabricating

Growing community of inventors

Tokyo, Japan

Taisuke Hirota