Konica Minolta, Inc.

Ryo Nakabayashi

Yasuo Miyata

Kenichi Tabata

Shusaku Kon

Mio Watanabe

Kosuke Ando

Hiroki Tatsumi

Noriko Ueda

An infrared-emitting compound has a structure represented by the following Formula (1a). In Formula (1a), Ar and ring A each independently represent an aryl ring, a heteroaryl ring or a fused ring thereof. Q-Ar represents an infrared-emitting residue. Rrepresents a group in which a dihedral angle between Ar and ring A is 45 degree or more. And a thick line represents a single bond or a double bond.

Infrared-emitting compound, and luminescent thin film, luminescent particle, wavelength conversion film and infrared-emitting surface light source containing same

Disclosed is a reflective photoplethysmogram sensor comprising: a planar light emitting element and a planar light receiving element. The light emitting element and the light receiving element do not face each other in an up/down direction. The minimum distance h (mm) between at least a pair of the light emitting element and the light receiving element satisfies the following expression (1)(×03.7)≤(×1.3)  Expression (1)where the minimum distance between the light emitting element and the light receiving element is h (mm), and a thickness of skin (epidermis+dermis) of a human body is t (mm), and the thickness is within the range 0.1 to 4 mm.

Reflective photoplethysmogram sensor and biological information measurement apparatus

Disclosed is a wavelength conversion film including at least two or more dyes and absorbing irradiation light to emit light at a longer wavelength than that of the irradiation light. The wavelength conversion film includes a first dye having a maximum absorption wavelength in a red light region, and a second dye absorbing excitation energy of the first dye to emit light in a near infrared region.

Wavelength conversion film, light-emitting member, authentication device, wristband type electronic apparatus and biometric device

Growing community of inventors

Hachioji, Japan

Ryo Nakabayashi