JP2008170534A5 - - Google Patents

Claims (22)

A method for manufacturing an optical element, comprising:
Forming a first molded product from the first resin by a first movable mold and a stationary mold that are relatively movable; and
Interposing the first molded article between a second movable mold capable of relative movement and the fixed mold;
A second resin is injected into the cavity formed by the second movable mold and the fixed mold in a state where the first molded article is interposed, and is cured to be integrated with the first molded article. And a step of molding the second molded product.   2. The method of manufacturing an optical element according to claim 1, wherein the second molded article is an optical element section, and the first molded article is a holding member disposed around the optical element. .   The first resin is a thermoplastic resin or a thermosetting resin, and the second resin is a thermosetting resin, a UV curable resin, or an electron beam curable resin. Or the manufacturing method of the optical element of 2.   The method for manufacturing an optical element according to claim 1, wherein the first resin is a thermoplastic resin or a thermosetting resin, and the second resin is a thermosetting resin.   The method for manufacturing an optical element according to claim 1, wherein the second resin is optically transparent.   The method of manufacturing an optical element according to claim 1, wherein the first resin is optically opaque.   When the second movable mold and the fixed mold are relatively moved in the approaching direction, the first molded product is compressed, and the first movable product is compressed in the compressed state. The method for manufacturing an optical element according to claim 1, wherein the second resin is injected and cured in a cavity constituted by the fixed mold.   Based on the viscosity of the first resin when injected into the cavity constituted by the first movable mold and the fixed mold, the first resin when injected into the second movable mold and the fixed mold cavity The method of manufacturing an optical element according to claim 1, wherein the viscosity of the resin No. 2 is lower.   The method for manufacturing an optical element according to claim 1, wherein the curing temperatures of the first resin and the second resin are substantially equal. The optical element manufacturing method according to claim 1, wherein a difference in linear expansion coefficient between the first resin and the second resin is 16 × 10 ⁻⁶ or less.   The surface roughness of the part where the first resin and the second resin are in contact with each other is made rougher than the surface roughness of the other part. A method for manufacturing an optical element.   The method for manufacturing an optical element according to claim 1, wherein a mark is attached to a portion where the first resin and the second resin are in contact with each other.   The method of manufacturing an optical element according to claim 12, wherein the mark represents information on a mold.   The second resin is injected into a cavity constituted by the second movable mold and the fixed mold through a flow path formed in the first molded product. 14. A method for producing an optical element according to any one of items 13.   When the second resin is injected into the cavity constituted by the second movable mold and the fixed mold, the air pushed out by the injection is caused to flow into the notch formed in the first molded product. The method for manufacturing an optical element according to claim 1, wherein:   An optical element manufactured by the method for manufacturing an optical element according to claim 1.   An optical element unit having a plurality of optical elements manufactured by the method for manufacturing an optical element according to claim 1, wherein a positioning portion is formed in the first molded product. Optical element unit.   An optical element unit having a plurality of optical elements manufactured by the method for manufacturing an optical element according to claim 1, wherein a positioning portion is formed in the second molded product. Optical element unit.   A manufacturing method for molding a plurality of resin molded products in a mold,
  Forming a first molded product from the first resin by a first movable mold and a stationary mold that are relatively movable; and
  A second resin is injected into a cavity formed between the second movable mold and the fixed mold that can move relative to each other while the first molded product is held in the fixed mold, A manufacturing method for molding a plurality of resin molded products, comprising a step of molding a second molded product integrally with a molded product.   Forming a first molded product from the first resin by a first movable mold and a stationary mold that are relatively movable; and
  Forming a second molded product from the second resin by a second movable mold and a stationary mold that are relatively movable; and
  The method for molding a plurality of resin molded products, wherein the step of molding the first molded product and the step of molding the second molded product are performed simultaneously.   21. The manufacturing method of molding a plurality of resin molded products according to claim 19 or 20, wherein the first molded product and the second molded product are molded products having different shapes.   The manufacturing method for molding a plurality of resin molded products according to any one of claims 19 to 21, wherein the first molded product is a resin-made holding member that holds an optical element.