Compound lens and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-9566750-B2
Application number	US-201414498240-A
Country	US
Kind code	B2
Filing date	Sep 26, 2014
Priority date	Mar 29, 2012
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A compound lens produced by heating and pressing a semi-cured product of a curable resin composition containing a (meth)acrylate monomer, a non-conjugated vinylidene group-containing compound, and a photo-radical initiator and a transparent substrate arranged so as to be in contact with the semi-cured product in a state in which a molding die is filled with the semi-cured product and the transparent substrate, and obtaining a cured product by allowing the semi-cured product to be thermally polymerized, exhibits an excellent transfer property, a small number of bubble mixtures, and excellent heat resistance and crack resistance.

First claim

What is claimed is:

1. A method of manufacturing a compound lens, comprising heating and pressing a semi-cured product of a curable resin composition containing a (meth)acrylate monomer, a non-conjugated vinylidene group-containing compound, and a photo-radical initiator and a transparent substrate arranged so as to be in contact with the semi-cured product in a state in which a molding die is filled with the semi-cured product and the transparent substrate, and obtaining a cured product by allowing the semi-cured product to be thermally polymerized, provided that the non-conjugated vinylidene group-containing compound is free from a (meth)acrylate monomer,
wherein the non-conjugated vinylidene group-containing compound is represented by the following general formula (1):

wherein R 11 , R 12 , R 15 , and R 16 each independently represents a substituent and A represents an atomic group necessary for forming an alicyclic ring.

2. The method of manufacturing a compound lens according to claim 1 , wherein the transparent substrate is a glass material.

3. The method of manufacturing a compound lens according to claim 1 , wherein the transparent substrate is a glass lens.

4. The method of manufacturing a compound lens according to claim 1 , wherein the semi-cured product of the curable resin composition has a complex viscosity of 10 5 mPa·s to 10 8 mPa·s at a frequency of 10 Hz at 25° C.

5. The method of manufacturing a compound lens according to claim 1 , further comprising filling the molding die with the curable resin composition in a state of being in contact with the transparent substrate.

6. The method of manufacturing a compound lens according to claim 5 , wherein the process of filling the molding die with the curable resin composition in a state of being in contact with the transparent substrate is a process of filling the molding die with the curable resin composition and laminating the transparent substrate on a surface of the curable resin composition on a side which is not in contact with the molding die.

7. The method of manufacturing a compound lens according to claim 1 , wherein the molding die is filled with the semi-cured product of the curable resin composition and the transparent substrate is laminated on the surface of the semi-cured product of the curable resin composition on the side which is not in contact with the molding die.

8. The method of manufacturing a compound lens according to claim 1 , further comprising subjecting the curable resin composition to at least one of photo-irradiation and heating to form a semi-cured product of the curable resin composition.

9. The method of manufacturing a compound lens according to claim 1 , further comprising subjecting the curable resin composition to photo-irradiation to form a semi-cured product of the curable resin composition.

10. The method of manufacturing a compound lens according to claim 1 , wherein the curable resin composition contains a thermal radical initiator.

11. The method of manufacturing a compound lens according to claim 1 , wherein the curable resin composition contains 5% by mass to 50% by mass of a polymer having at least one polymerizable group selected from a methacryl group, an allyl group, an acryl group, and a vinyl group in a side chain thereof.

12. The method of manufacturing a compound lens according to claim 1 , wherein the polymer having at least one polymerizable group selected from a methacryl group, an allyl group, an acryl group, and a vinyl group at the side chain thereof has a weight average molecular weight of 2000 to 200000.

13. The method of manufacturing a compound lens according to claim 1 , wherein the curable resin composition before semi-curing has a liquid viscosity of 1000 mPa·s to 20000 mPa·s at a frequency of 10 Hz at 25° C.

14. The method of manufacturing a compound lens according to claim 1 , wherein the molding die is a metal molding die.

15. A compound lens, wherein a cured product of a curable resin composition containing 5% by mass to 50% by mass of a polymer which has a (meth)acrylate monomer, a non-conjugated vinylidene group containing compound, and a photo-radical initiator and has at least one polymerizable group selected from a methacryl group, an allyl group, an acryl group, and a vinyl group in a side chain thereof is laminated on at least one side of a transparent substrate, provided that the non-conjugated vinylidene group-containing compound is free from a (meth)acrylate monomer,
wherein the non-conjugated vinylidene group-containing compound is a compound represented by the following general formula (1):

wherein R 11 , R 12 , R 15 , and R 16 each independently represents a substituent and A represents an atomic group necessary for forming an alicyclic ring.

16. The compound lens according to claim 15 , wherein the transparent substrate is a glass material.

17. The compound lens according to claim 15 , wherein the transparent substrate is a glass lens.

18. A compound lens which is manufactured by heating and pressing a semi-cured product of a curable resin composition containing a (meth)acrylate monomer, a non-conjugated vinylidene group-containing compound, and a photo-radical initiator and a transparent substrate arranged so as to be in contact with the semi-cured product in a state in which a molding die is filled with the semi-cured product and the transparent substrate, and obtaining a cured product by allowing the semi-cured product to be thermally polymerized, provided that the non-conjugated vinylidene group-containing compound is free from a (meth)acrylate monomer,
wherein the non-conjugated vinylidene group-containing compound is a compound represented by the following general formula (1):

wherein R 11 , R 12 , R 15 , and R 16 each independently represents a substituent and A represents an atomic group necessary for forming an alicyclic ring.

Assignees

• Fujifilm Corp

Inventors

• Nagai Takayasu
• Morooka Naoyuki
• Obayashi Tatsuhiko

Classifications

• B29C39/10 Primary

  incorporating preformed parts or layers, e.g. casting around inserts or for coating articles {(coating a surface by casting in general B05D1/30, B29C39/126 takes precedence)} · CPC title

• B29L2011/0016

  Lenses · CPC title

• B29D11/00403 Primary

  Producing compound lenses · CPC title

• G02B1/041

  Lenses · CPC title

• B29K2027/00

  Use of polyvinylhalogenides {or derivatives thereof} as moulding material · CPC title