Abstract: [Object] To propose a novel and improved fragrance material holding member and fragrance providing device that can improve persistence of a fragrance material while avoiding an increase in the size of the device. [Solution] Provided is a fragrance material holding member including: an airflow passage through which air supplied from an airflow source passes, the airflow passage being provided to penetrate the fragrance material holding member; and a holding space that branches from the airflow passage and holds a fragrance material.

Abstract: [Object] To propose a novel and improved fragrance providing device that can be reduced in size. [Solution] Provided is a fragrance providing device including: a fragrance material holding member in which a plurality of holding passages each holding a fragrance material are provided to penetrate the fragrance material holding member; and a rotation mechanism capable of relatively rotating the fragrance material holding member and a member provided with an introduction port that communicates with part of the plurality of holding passages and introduces air supplied from an airflow source to the part of the holding passages, in a manner that the part of the holding passages that communicates with the introduction port is switched.

Abstract: [Object] It is possible to efficiently perfume using a relatively small amount of fragrance material while an increase in size of a perfuming device is minimized. [Solution] Provided is a cartridge for a perfuming device, including: a main body part; an air flow channel that is provided in the main body part and has both ends that are open; and a fragrance material held in at least a part of an inner surface of the air flow channel.

Abstract: A transducer that converts electrical energy to mechanical energy, the transducer includes a dielectric layer; a first electrode that is provided on one surface of the dielectric layer; and a second electrode that is provided on another surface of the dielectric layer. At least one of the first electrode and the second electrode becomes an insulator, before the dielectric layer suffers insulation breakdown by voltage that is applied between the first electrode and the second electrode.

Abstract: This sleep assistance apparatus includes a stimulation generation unit that generates stimulation, a user being capable of receiving the stimulation; a detection unit that detects biological information of the user; and a control unit that decides optimal stimulation on the basis of the detected biological information, and causes the stimulation generation unit to generate the optimal stimulation.

Abstract: [Object] To propose a novel and improved fragrance material holding member and fragrance providing device that can improve persistence of a fragrance material while avoiding an increase in the size of the device. [Solution] Provided is a fragrance material holding member including: an airflow passage through which air supplied from an airflow source passes, the airflow passage being provided to penetrate the fragrance material holding member; and a holding space that branches from the airflow passage and holds a fragrance material.

Abstract: [Object] To propose a novel and improved fragrance providing device that can be reduced in size. [Solution] Provided is a fragrance providing device including: a fragrance material holding member in which a plurality of holding passages each holding a fragrance material are provided to penetrate the fragrance material holding member; and a rotation mechanism capable of relatively rotating the fragrance material holding member and a member provided with an introduction port that communicates with part of the plurality of holding passages and introduces air supplied from an airflow source to the part of the holding passages, in a manner that the part of the holding passages that communicates with the introduction port is switched.

Abstract: This sleep assistance apparatus includes a stimulation generation unit that generates stimulation, a user being capable of receiving the stimulation; a detection unit that detects biological information of the user; and a control unit that decides optimal stimulation on the basis of the detected biological information, and causes the stimulation generation unit to generate the optimal stimulation.

Abstract: [Object] It is possible to efficiently perfume using a relatively small amount of fragrance material while an increase in size of a perfuming device is minimized. [Solution] Provided is a cartridge for a perfuming device, including: a main body part; an air flow channel that is provided in the main body part and has both ends that are open; and a fragrance material held in at least a part of an inner surface of the air flow channel.

Abstract: A transducer that converts electrical energy to mechanical energy, the transducer includes: a dielectric layer; a first electrode that is provided on one surface of the dielectric layer; and a second electrode that is provided on another surface of the dielectric layer. At least one of the first electrode and the second electrode becomes an insulator, before the dielectric layer suffers insulation breakdown by voltage that is applied between the first electrode and the second electrode.

Abstract: A retardation element includes an alignment film and a retardation layer in contact with a surface of the alignment film, and the retardation layer is formed by applying a paint containing a liquid crystal monomer and a non-liquid crystal monomer on the surface of the alignment film and then polymerizing the paint while the liquid crystal monomer is placed in an alignment state.

Abstract: A retardation element includes an alignment film and a retardation layer in contact with a surface of the alignment film, and the retardation layer is formed by applying a paint containing a liquid crystal monomer and a non-liquid crystal monomer on the surface of the alignment film and then polymerizing the paint while the liquid crystal monomer is placed in an alignment state.