Abstract: An optical element according to the present disclosure includes a main body part including an optical part having an optical surface, and a support part which is provided to the optical part, and which is to be supported by a support body, and a functional layer which is provided as a film to the main body part, wherein the functional layer is disposed so as to cover the optical surface of the optical part, and so as not to cover at least a part of the support part.

Abstract: An optical element according to the present disclosure includes a main body part including an optical part having an optical surface, and a support part which is provided to the optical part, and which is to be supported by a support body, and a functional layer which is provided as a film to the main body part, wherein the functional layer is disposed so as to cover the optical surface of the optical part, and so as not to cover at least a part of the support part.

Abstract: A wavelength conversion element according to the invention includes a wavelength conversion layer having a plurality of air holes, and excited by light in a first wavelength band to thereby generate light in a second wavelength band different from the first wavelength band, a transparent member adapted to seal a recessed section occurring on a first surface of the wavelength conversion layer due to the air hole, a reflecting layer disposed so as to be opposed to the first surface of the wavelength conversion layer, and a base member disposed so as to be opposed to the reflecting layer, and the transparent member is disposed in some of the plurality of air holes.

Abstract: A valve unit includes a flow path member having an opening surface that has a flow path opening of a liquid flow path, a valve having a sealing surface configured to seal the flow path opening, and a sealing member disposed on one of a peripheral portion of the flow path opening in the opening surface and a portion of the sealing surface facing the peripheral portion. The sealing surface is configured to be moved forward and backward relative to the opening surface to open and close the flow path opening. The sealing member is configured to be in contact with the peripheral portion of the flow path opening and the sealing surface when the valve is closed. The sealing member includes a fluorinated polyether.

Abstract: A wavelength conversion element according to the invention includes a wavelength conversion layer having a plurality of air holes, and excited by light in a first wavelength band to thereby generate light in a second wavelength band different from the first wavelength band, a transparent member adapted to seal a recessed section occurring on a first surface of the wavelength conversion layer due to the air hole, a reflecting layer disposed so as to be opposed to the first surface of the wavelength conversion layer, and a base member disposed so as to be opposed to the reflecting layer, and the transparent member is disposed in some of the plurality of air holes.

Abstract: An electronic device includes a joined-structure assembly in which a plurality of structures are joined together. At least one of the plurality of structures includes a movable region, a part of an adhesive agent applied between the structures faces a space communicating with the movable region, and the adhesive agent includes an organo-siloxane compound with three or more reaction points.

Abstract: A joining method includes a process of applying a joining material including a thermosetting resin to a member. The joining material includes an addition-type silicone resin. The joining material includes one or more kinds selected from the group consisting of a methyl-based straight silicone resin, a phenyl-based silicone resin, and a modified silicone resin.

Abstract: An electronic device includes a joined-structure assembly in which a plurality of structures are joined together. At least one of the plurality of structures includes a movable region, a part of an adhesive agent applied between the structures faces a space communicating with the movable region, and the adhesive agent includes an organo-siloxane compound with three or more reaction points.

Abstract: A valve unit includes a flow path member having an opening surface that has a flow path opening of a liquid flow path, a valve having a sealing surface configured to seal the flow path opening, and a sealing member disposed on one of a peripheral portion of the flow path opening in the opening surface and a portion of the sealing surface facing the peripheral portion. The sealing surface is configured to be moved forward and backward relative to the opening surface to open and close the flow path opening. The sealing member is configured to be in contact with the peripheral portion of the flow path opening and the sealing surface when the valve is closed. The sealing member includes a fluorinated polyether.

Abstract: A joining method includes a process of applying a joining material including a thermosetting resin to a member. The joining material includes an addition-type silicone resin. The joining material includes one or more kinds selected from the group consisting of a methyl-based straight silicone resin, a phenyl-based silicone resin, and a modified silicone resin.

Abstract: A joining method includes a process of applying a joining material including a thermosetting resin to a member. The joining material includes an addition-type silicone resin. The joining material includes one or more kinds selected from the group consisting of a methyl-based straight silicone resin, a phenyl-based silicone resin, and a modified silicone resin.

Abstract: A silicon nozzle plate has excellent liquid resistance on an inner surface of a nozzle opening and a discharge surface. A plurality of the nozzle openings are disposed in a silicon substrate of the nozzle plate. A tantalum oxide film formed by atomic layer deposition is disposed on both surfaces of the silicon substrate and the inner surface of the nozzle opening.

Abstract: A joining method includes a process of applying a joining material including a thermosetting resin to a member. The joining material includes an addition-type silicone resin. The joining material includes one or more kinds selected from the group consisting of a methyl-based straight silicone resin, a phenyl-based silicone resin, and a modified silicone resin.

Abstract: A silicon nozzle plate has excellent liquid resistance on an inner surface of a nozzle opening and a discharge surface. A plurality of the nozzle openings are disposed in a silicon substrate of the nozzle plate. A tantalum oxide film formed by atomic layer deposition is disposed on both surfaces of the silicon substrate and the inner surface of the nozzle opening.