Structure, solid image pickup element, infrared sensor, and composition

A structure comprising:

• a near infrared transmitting filter that shields light in a visible range and allows transmission of at least a part of light in a near infrared range;
• and
• a member that is provided on an optical path of the near infrared transmitting filter on at least one of an incidence side into the near infrared transmitting filter or an emission side from the near infrared transmitting filter, allows transmission of light in a near infrared range, and has a refractive index of 1.7 or higher for the light in the near infrared range,
• wherein the member is for a concave lens or a convex lens,
• the member allows transmission of at least light having a wavelength of 940 nm and has a refractive index of 1.7 or higher for light having a wavelength of 940 nm,
• the member includes particles formed of one or more of the group of Ge, εFe2O3, BaFe, SrFe, a phthalocyanine compound, and a naphthalocyanine compound, and
• the near infrared transmitting filter is a filter that allows transmission of at least light having a wavelength of 940 nm.

A structure comprising:

• a near infrared transmitting filter that shields light in a visible range and allows transmission of at least a part of light in a near infrared range;
• and
• a member that is provided on an optical path of the near infrared transmitting filter on at least one of an incidence side into the near infrared transmitting filter or an emission side from the near infrared transmitting filter, allows transmission of light in a near infrared range, and has a refractive index of 1.7 or higher for the light in the near infrared range,
• wherein the member is for a concave lens or a convex lens, and
• the member includes particles formed of a phthalocyanine compound.