Joined optical member
A joined optical member 1 includes: a hardly adhesive lens L 1 that is formed of a hardly adhesive material; an easily adhesive lens L 2 that is formed of a easily adhesive material and is provided parallel to the hardly adhesive lens L 1 in an optical axis direction; a bonding member that includes an exposed portion 2 a and is embedded in the hardly adhesive lens L 1 , the exposed portion 2 a being exposed to an outer peripheral portion 11 of a facing surface L 1 a of the hardly adhesive lens L 1 that faces the easily adhesive lens L 2 ; and an adhesive 3 that allows the easily adhesive lens L 2 and the exposed portion 2 a of the bonding member 2 to adhere to each other. The easily adhesive material has higher adhesiveness with the adhesive than the hardly adhesive material.
1. A joined optical member comprising:
a first optical element that is formed of a polyolefin resin;
a second optical element that is formed of a material selected from a group consisting of polymethyl methacrylate, polycarbonate, a thermosetting resin, a photocurable resin, and quartz glass, and is provided next to the first optical element in an optical axis direction;
a bonding member that includes an exposed portion and is embedded in the first optical element, the exposed portion being exposed to an outer peripheral portion of a facing surface of the first optical element that faces the second optical element in the optical axis direction; and
an adhesive that allows the second optical element and the exposed portion of the bonding member to adhere to each other.
2. The joined optical member according to claim 1 , further comprising:
an optical joining material that fills a gap between the second optical element and a center portion of the facing surface of the first optical element that is surrounded by the outer peripheral portion.
3. The joined optical member according to claim 2 ,
wherein the optical joining material is different from the adhesive.
4. The joined optical member according to claim 1 ,
wherein a side surface of the bonding member has a tapered shape in which a width increases in the optical axis direction away from the exposed portion.
5. The joined optical member according to claim 1 ,
the first optical element is an insert molded article that is integrally molded with the bonding member.
6. A joined optical member comprising:
a first optical element that is formed of a polyolefin resin;
a second optical element that is formed of a material selected from a group consisting of polymethyl methacrylate, polycarbonate, a thermosetting resin, a photocurable resin, and quartz glass, and is provided next to the first optical element in an optical axis direction;
a bonding member that includes an exposed portion and is embedded in the first optical element, the exposed portion being exposed to an outer peripheral portion of a facing surface of the first optical element that faces the second optical element; and
an adhesive that allows the second optical element and the exposed portion of the bonding member to adhere to each other,
wherein the facing surface of the first optical element comprises an optical surface that imparts refractive power to the first optical element and an edge surface that surrounds an outer periphery of the optical surface, and
the bonding member is embedded at the edge surface and not embedded at the optical surface.
7. The joined optical member according to claim 6 ,
wherein the exposed portion is disposed at the edge surface.
8. A joined optical member comprising:
a first optical element that is formed of a polyolefin resin;
a second optical element that is formed of a material selected from a group consisting of polymethyl methacrylate, polycarbonate, a thermosetting resin, a photocurable resin, and quartz glass, and is provided next to the first optical element in an optical axis direction;
a bonding member that includes an exposed portion and is embedded in the first optical element, the exposed portion being exposed to an outer peripheral portion of a facing surface of the first optical element that faces the second optical element; and
an adhesive that allows the second optical element and the exposed portion of the bonding member to adhere to each other,
wherein the facing surface of the first optical element comprises a first optical surface that imparts refractive power to the first optical element and a first edge surface that surrounds an outer periphery of the first optical surface,
a facing surface of the second optical element facing to the first optical element comprises a second optical surface that imparts refractive power to the second optical element and a second edge surface that surrounds an outer periphery of the second optical surface, and
the adhesive allows the second edge surface to adhere to the first edge surface and the exposed portion.
9. A joined optical member comprising:
a first optical element that is formed of a polyolefin resin;
a second optical element that is formed of a material selected from a group consisting of polymethyl methacrylate, polycarbonate, a thermosetting resin, a photocurable resin, and quartz glass, and is provided next to the first optical element in an optical axis direction;
a bonding member that includes an exposed portion and is embedded in the first optical element, the exposed portion being exposed to an outer peripheral portion of a facing surface of the first optical element that faces the second optical element; and
an adhesive that allows the second optical element and the exposed portion of the bonding member to adhere to each other,
wherein the bonding member is not embedded in the second optical element.