Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Hiroshi Yagi

Yoshio Manabe

Masanori Shimizu

Yoko Matsubayashi

Atsushi Motoya

Toshio Mori

Tsuyoshi Terada

Kazuhiro Matsuo

Makoto Horiuchi

Ikuko Aoki

An LED lamp provides a strong red color with a natural appearance. The LED lamp is provided with an LED module and a filter. The LED module includes a blue LED with a main emission peak in the 440 nm to 460 nm wavelength band, a green/yellow phosphor that is excited by light emitted by the blue LED, and a red phosphor that is excited by light emitted by at least one of the blue LED and the green/yellow phosphor. The filter reduces the spectral radiation intensity of at least a portion of the 570 nm to 590 nm wavelength band among light emitted by the LED module.

LED lamp, LED illumination device, and LED module

To constrain reductions in luminous efficacy while enhancing the color rendition index, the LED module includes a blue LED, at least one variety of phosphor particles excited by the outgoing light from the blue LED, and neodymium glass particles that include neodymium ions absorbing the outgoing light from the phosphor particles in a predetermined wavelength band.

LED module, LED lamp, and illuminating apparatus

A backlight apparatus comprises a light source that is composed of a combination of a blue light emitting device, a green light emitting phosphor, and a red light emitting phosphor. The blue light emitting device has a peak intensity of a light emitting spectrum 3 to 19 times as high as the green light emitting phosphor.

Backlight apparatus, light source for backlight apparatus, and display apparatus using the same

A fluorescent lamp is configured so that a glass bulb has a phosphor film formed on its internal face, and a rare gas and an amalgam pellet are enclosed therein. The amalgam pellet contains zinc, tin, and mercury as principal components, one amalgam pellet is enclosed in the glass bulb, and the amalgam pellet has a weight of not more than 20 mg. The fluorescent lamp satisfies the relationship expressed as: 45&#xd7;(1&#x2212;A)&#x2266;x&#x2266;55&#xd7;(1&#x2212;A), 75A&#x2266;y&#x2266;85A, 45&#x2212;30A&#x2266;z&#x2266;55&#x2212;30A, and x+y+z&#x2266;100, where x represents a content of zinc contained in the amalgam pellet in percent by weight, y represents a content of tin therein in percent by weight, and z represents a content of mercury therein in percent by weight. This configuration allows the fluorescent lamp to be characterized in that an amount of released mercury that is necessary for the first lighting of the fluorescent lamp is secured, and that the phosphor film is less prone to being peeled due to the amalgam.

Fluorescent lamp, luminaire and method for manufacturing fluorescent lamp

Growing community of inventors

Osaka, Japan

Hiroshi Yagi