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US 12,174,525 B2Granted
Light shielding blade and image pickup apparatus
AssigneeCanon Kabushiki Kaisha
InventorHirotomo Tamiya
Life of this patent
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Abstract
A light shielding blade including a laminate in which a resin layer is sandwiched between two metal base materials, wherein the two metal base materials each have a specific rigidity of 20×106 [Pa·m3/kg] or more and a specific bending rigidity of 1.0 [Pa1/3·m3/kg] or more, and wherein the resin layer has an elastic modulus of 1 GPa or more and a thickness of 65 μm or less.
Claims17
A light shielding blade comprising:
- a laminate in which a resin layer is sandwiched between two metal base materials,
- wherein at least one of the two metal base materials have a specific rigidity of 20×106 [Pa·m3/kg] or more and a specific bending rigidity of 1.0 [Pa1/3·m3/kg] or more,
- wherein the resin layer is a cured product of a composition containing at least an epoxy resin and a crosslinking curing agent, and
- wherein the composition contains a supramolecular inclusion body in an amount of 0.1 part by mass or more and 4.0 parts by mass or less with respect to 100 parts by mass of the epoxy resin.
1 more element
Dependencies are inferred from the claim text.