Laminate, method of forming optical body, and camera module-mounted device

A laminate comprising:

• a thin-film structure;
• and
• holding films,
• wherein a first holding film is laminated on one surface of the thin-film structure, and a second holding film is laminated on an other surface of the thin-film structure,
• the thin-film structure has a first fine concave-convex structure at a surface in contact with the first holding film, and a second fine concave-convex structure at a surface in contact with the second holding film,
• the first holding film has a third fine concave-convex structure at a surface in contact with the thin-film structure, the first holding film comprising at least one of polyethylene terephthalate or triacetyl cellulose,
• the second holding film has a fourth fine concave-convex structure at a surface in contact with the thin-film structure, the second holding film comprising at least one of polyethylene terephthalate or triacetyl cellulose,
• at least one of the first holding film or the second holding film includes an inorganic membrane and a peel membrane at a surface laminated on the thin-film structure,
• a thickness of the thin-film structure is 10 μm or less,
• 0<P1, 0<P2, and P1≠P2 in a 90° peeling test in accordance with JIS Z 0237:2009, where P1 is a peel force, expressed in N/25 mm, at an interface between the first holding film and the thin-film structure, and P2 is a peel force, expressed in N/25 mm, at an interface between the second holding film and the thin-film structure, and
• a difference between P1 and P2 is 0.3 N/25 mm or less.