Panasonic Intellectual Property Management Co., Ltd.

Sayaka Nishi

Takashi Saito

Naohiro Toda

Hiroki Noguchi

Ayako Tsukitani

Makoto Yamada

Shin Ukegawa

Naoko Takei

Toshihide Mori

Masaki Ishiwata

Shinichi Aoki

Kensuke Yamazoe

Kouji Nishioka

Yoshinori Karasawa

Hiroshi Hamano

Kouichi Wada

A lighting device is provided with an illumination unit including two or less LED light sources. The illumination unit uses the two or less LED light sources to emit light of a short wavelength band and light of a long wavelength band. An output varying unit functions to vary an output of at least the long wavelength band light. When the output varying unit receives a varying signal, the output varying unit functions to decrease the output of at least the long wavelength band light.

Lighting device

A lighting device is provided with a lighting unit including a light emitting element and fluorescent bodies, which emit light of different wavelengths when excited by light from the light emitting element. When a peak output value of emitted light is 100% in a range of 440-465 nm, the lighting unit emits light having an output value at 500 nm that is 35%-55%, an output value at 550 nm that is 45%-80%, an output value at 600 nm that is 45%-75%, and an output value at 640 nm that is 50%-80%. The lighting unit emits light having a color temperature of 4500-5500 K and with the output value at 640 nm in a range of 100%-120% relative to the output value at 600 nm and in a range of 85%-130% relative to the output value at 550 nm.

Lighting device to produce preferable preception of skin color

A lighting device includes an LED light source that emits light having a first peak wavelength at 430 to 460 nm and a second peak wavelength at 530 to 570 nm.

Growing community of inventors

Osaka, Japan

Sayaka Nishi