Suction method

1. A suction method of performing suction of a Fabry-Perot interference filter including: a substrate; a laminated structure that is provided on the substrate and that includes a main surface facing a side opposite to the substrate; and a thinned portion that is located outside the laminated structure when viewed in a direction intersecting the main surface and that is recessed to a side of the substrate with respect to the main surface, by using a suction collet,

the method comprising:

a first step of arranging the suction collet so as to face the main surface;

a second step of bringing the suction collet into contact with the Fabry-Perot interference filter after the first step; and

a third step of suctioning the Fabry-Perot interference filter by using the suction collet after the second step,

wherein the suction collet includes: a main body having a surface provided with an opening for air intake; and a contact portion that is provided on the surface so as to protrude from the surface and that includes a contact surface,

the laminated structure is provided with a membrane structure including a first mirror portion and a second mirror portion facing each other via a gap and in which a distance from each other is variable and including a portion of the main surface,

in the first step, the suction collet is arranged such that the contact surface faces a bottom surface of the thinned portion,

in the second step, the contact surface is brought into contact with the bottom surface while forming a space between the surface and the main surface, and

in the third step, an inside of the space is exhausted by the air intake through the opening.

2. The suction method according to claim 1 ,

wherein the contact portion extends so as to surround an area on the surface facing the space when viewed in a direction intersecting the surface,

the contact portion is provided with a communication portion that allows the space to communicate with an outside in a state where the contact surface is in contact with the bottom surface, and

in the third step, air is introduced into the space through the communication portion by the air intake through the opening.

3. The suction method according to claim 2 ,

wherein the contact portion includes a plurality of portions arranged to be spaced apart from each other so as to surround the area when viewed in the direction intersecting the surface, and

the communication portion is formed by a gap between the portions.

4. The suction method according to claim 2 ,

wherein the laminated structure includes an electrode terminal that is located outside the membrane structure when viewed in the direction intersecting the main surface and that protrudes from the main surface, and

in the first step, the suction collet is arranged such that the communication portion is located at a position corresponding to the electrode terminal outside the electrode terminal in the state where the contact surface is in contact with the bottom surface.

5. The suction method according to claim 2 ,

wherein the laminated structure has a rectangular shape when viewed in the direction intersecting the main surface, and

in the first step, the suction collet is arranged such that the communication portion is located at a position corresponding to each of four corner portions of the rectangular shape of the laminated structure in the state where the contact surface is in contact with the bottom surface.

6. The suction method according to claim 1 ,

wherein the contact portion is integrally formed so as to continuously surround an area on the surface facing the space when viewed in the direction intersecting the surface.

7. The suction method according to claim 1 ,

wherein a plurality of the openings is formed in the surface, and

in the first step, the suction collet is arranged such that the plurality of openings is symmetrically dispersed with respect to a center of the membrane structure when viewed in the direction intersecting the main surface.