OPTICAL ARTICLE FOR INFRARED COMMUNICATION AND LIGHT RECEIVING UNIT FOR INFRARED COMMUNICATION

Title:

OPTICAL ARTICLE FOR INFRARED COMMUNICATION AND LIGHT RECEIVING UNIT FOR INFRARED COMMUNICATION

Document Type and Number:

Japanese Patent JP2013065052

Kind Code:

A

Abstract:

To provide an optical article for infrared communication and a light receiving unit for infrared communication, capable of specifically largely transmitting only a wavelength range in an infrared communication band and visually showing white by scattering and reflecting light in a visible light region.

A scattering reflection layer 23 is formed by uniformly dispersing fine particles in transparent binder resin, where the fine particles has a refractive index different from that of the binder resin. Diameter D of a fine particle of a part of or the whole of the fine particles has size represented by following formula D<0.4*λ/π. D represents particle diameter and λ represents wavelength in an infrared communication band. The fine particles is allowed to scatter and reflect light in a visible light region to develop white color, and transmittance in a wavelength region of the infrared communication band is set to not less than 12%. The scattering reflection layer 23 is formed on an outer surface of a substrate 21 to fabricate a light receiving unit 15 for infrared communication.

Inventors:

OZAKI TETSUO
MIYAGUCHI AKIRA
HASE KANAME
KIMURA NAOYA

Application Number:

JP2012287035A

Publication Date:

April 11, 2013

Filing Date:

December 28, 2012

Export Citation:

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